Patent Application
20230254618
The present disclosure relates to a display apparatus.
In display apparatuses, a display panel displays an image, and a separate speaker should be installed for providing a sound generally. When a speaker is disposed in a display apparatus, the speaker occupies a space, and due to this, the design and spatial disposition of the display apparatus are limited.
A display apparatus has a problem in that sound quality is deteriorated due to interference between sounds reflected from a wall or the ground as a sound output from a speaker progresses toward a rear direction or a lower direction of a display apparatus. For this reason, problems occur in that it is difficult to enable exact sound transfer and immersion of a viewer is deteriorated.
The inventors of the present disclosure have recognized problems described above and have performed various experiments for implementing a vibration device capable of improving the quality of sound and having reliability. Through the various experiments, the inventors have invented a display apparatus having a new structure including a vibration device capable of improving the quality of sound and having reliability.
Accordingly, embodiments of the present disclosure are directed to providing a display apparatus that substantially obviates one or more problems due to limitations and disadvantages of the related art.
An aspect of the present disclosure is to provide a display apparatus including a vibration device which is disposed at a rear surface of a display panel and vibrates the display panel to generate a sound, thereby enhancing a sound pressure characteristic.
An aspect of the present disclosure is to provide a display apparatus including a vibration device capable of implementing a sound of a multi-channel.
To achieve these and other aspects of the inventive concepts, as embodied and broadly described herein, a display apparatus comprises a display device including a display panel configured to display an image and include first to sixth regions, at least one first vibration device and at least one second vibration device respectively at the first region and the second region, at least one third vibration device, at least one fourth vibration device, and at least one fifth vibration device respectively at the fourth to sixth regions, a first partition between the first region and the third region, a second partition between the second region and the third region, a third partition between the fourth region and the sixth region, and a fourth partition between the fifth region and the sixth region. A length of one or more among the first partition and the second partition differs from a length of one or more among the third partition and the fourth partition.
In another aspect, a display apparatus comprises a display device including a display panel configured to display an image and include first to sixth regions, at least one first vibration device and at least one second vibration device respectively at the first region and the second region, at least one third vibration device, at least one fourth vibration device, and at least one fifth vibration device respectively at the fourth to sixth regions, a first partition at one or more sides of the at least one first vibration device, a second partition at one or more sides of the at least one second vibration device, a third partition at one or more sides of the at least one third vibration device, and a fourth partition at one or more sides of the at least one fourth vibration device. A size of one or more among the first partition and the second partition differs from a size of one or more among the third partition and the fourth partition.
According to an embodiment of the present disclosure, a display apparatus includes a vibration device that vibrates the display panel, so that the display apparatus may generate a sound so that the direction of the sound output from the display apparatus is toward the front surface of the display panel.
According to an embodiment of the present disclosure, a display apparatus including a vibration device capable of implementing a sound of a multi-channel may be provided.
Other systems, methods, features and advantages will be, or will become, apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the present disclosure, and be protected by the following claims. Nothing in this section should be taken as a limitation on those claims. Further aspects and advantages are discussed below in conjunction with embodiments of the disclosure. It is to be understood that both the foregoing general description and the following detailed description of the present disclosure are exemplary and explanatory and are intended to provide further explanation of the inventive concepts as claimed.
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and together with the description serve to explain principles of the disclosure.
Throughout the drawings and the detailed description, unless otherwise described, the same drawing reference numerals should be understood to refer to the same elements, features, and structures. The relative size and depiction of these elements may be exaggerated for clarity, illustration, and convenience.
Reference will now be made in detail to embodiments of the present disclosure, examples of which may be illustrated in the accompanying drawings. In the following description, when a detailed description of well-known functions or configurations related to this document is determined to unnecessarily cloud a gist of the inventive concept, the detailed description thereof will be omitted. The progression of processing steps and/or operations described is an example; however, the sequence of steps and/or operations is not limited to that set forth herein and may be changed as is known in the art, with the exception of steps and/or operations necessarily occurring in a particular order. Like reference numerals designate like elements throughout. Names of the respective elements used in the following explanations are selected only for convenience of writing the specification and may be thus different from those used in actual products.
Advantages and features of the present disclosure, and implementation methods thereof will be clarified through following embodiments described with reference to the accompanying drawings. The present disclosure may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Further, the present disclosure is only defined by scopes of claims.
A shape, a size, a ratio, an angle, and a number disclosed in the drawings for describing embodiments of the present disclosure are merely an example, and thus, the present disclosure is not limited to the illustrated details. Like reference numerals refer to like elements throughout. In the following description, when the detailed description of the relevant known function or configuration is determined to unnecessarily obscure the important point of the present disclosure, the detailed description will be omitted.
In a case where “comprise,” “have,” and “include” described in the present specification are used, another part may be added unless “only” is used. The terms of a singular form may include plural forms unless referred to the contrary.
In construing an element, the element is construed as including an error or tolerance range although there is no explicit description of such an error or tolerance range.
In describing a position relationship, for example, when a position relation between two parts is described as “on,” “over,” “under,” and “next,” one or more other parts may be disposed between the two parts unless a more limiting term, such as “just” or “direct(ly)” is used.
In describing a time relationship, for example, when the temporal order is described as, for example, “after,” “subsequent,” “next,” and “before,” a case which is not continuous may be included unless a more limiting term, such as “just,” “immediate(ly),” or “direct(ly)” is used.
It will be understood that, although the terms “first,” “second,” etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.
In describing the elements of the present disclosure, the terms “first,” “second,” “A,” “B,” “(a),” “(b),” etc., may be used. These terms are intended to identify the corresponding elements from the other elements, and basis, order, or number of the corresponding elements should not be limited by these terms. The expression that an element is “connected,” “coupled,” or “adhered” to another element or layer, the element or layer can not only be directly connected or adhered to another element or layer, but also be indirectly connected or adhered to another element or layer with one or more intervening elements or layers “disposed” between the elements or layers, unless otherwise specified.
The term “at least one” should be understood as including any and all combinations of one or more among the associated listed elements. For example, the meaning of “at least one or more of a first element, a second element, and a third element” denotes the combination of all elements proposed from two or more of the first element, the second element, and the third element as well as the first element, the second element, or the third element.
In the description of embodiments, when a structure is described as being positioned “on or above” or “under or below” another structure, this description should be construed as including a case in which the structures contact each other as well as a case in which a third structure is disposed therebetween. The size and thickness of each element shown in the drawings are given merely for the convenience of description, and embodiments of the present disclosure are not limited thereto, unless otherwise specified.
Features of various embodiments of the present disclosure may be partially or overall coupled to or combined with each other, and may be variously inter-operated with each other and driven technically as those skilled in the art can sufficiently understand. The embodiments of the present disclosure may be carried out independently from each other, or may be carried out together in co-dependent relationship.
In the present disclosure, examples of a display apparatus may include a narrow-sense display apparatus such as an organic light emitting display (OLED) module or a liquid crystal module (LCM) including a display panel and a driver for driving the display panel. Also, examples of the display apparatus may include a set device (or a set apparatus) or a set electronic device such as a notebook computer, a TV, a computer monitor, an equipment apparatus including an automotive apparatus or another type apparatus for vehicles, or a mobile electronic device such as a smartphone or an electronic pad, which is a complete product (or a final product) including an LCM or an OLED module.
Therefore, in the present disclosure, examples of the display apparatus may include a narrow-sense display apparatus itself, such as an LCM or an OLED module, and a set apparatus which is a final consumer device or an application product including the LCM or the OLED module.
In some embodiments, an LCM or an OLED module including a display panel and a driver may be referred to as a narrow-sense display apparatus, and an electronic apparatus which is a final product including an LCM or an OLED module may be referred to as a set apparatus. For example, the narrow-sense display apparatus may include a display panel, such as an LCD or an OLED, and a source printed circuit board (PCB) which is a controller for driving the display panel. The set device may further include a set PCB which is a set controller electrically connected to the source PCB to overall control the set apparatus.
A display panel applied to an embodiment of the present disclosure may use all types of display panels such as a liquid crystal display panel, an organic light emitting diode (OLED) display panel, and an electroluminescent display panel, but embodiments are not limited to a specific display panel which is vibrated by a vibration device according to an embodiment of the present disclosure to output a sound. Also, a shape or a size of a display panel applied to a display apparatus according to an embodiment of the present disclosure is not limited.
For example, if the display panel is the liquid crystal display panel, the display panel may include a plurality of gate lines, a plurality of data lines, and a plurality of pixels respectively provided at a plurality of pixel areas defined by intersections of the gate lines and the data lines. Also, the display panel may include an array substrate including a thin film transistor (TFT) which is a switching element for adjusting a light transmittance of the plurality of pixels, an upper substrate including a color filter and/or a black matrix, and a liquid crystal layer between the array substrate and the upper substrate.
Moreover, if the display panel is the organic light emitting display panel, the display panel may include a plurality of gate lines, a plurality of data lines, and a plurality of pixels respectively provided at a plurality of pixel areas by intersections of the gate lines and the data lines. Also, the display panel may include an array substrate including a TFT which is an element for selectively applying a voltage to the pixels, an organic light emitting device layer on the array substrate, and an encapsulation substrate disposed on the array substrate to cover the organic light emitting device layer. The encapsulation substrate may protect the TFT and the organic light emitting device layer from an external impact and may prevent water or oxygen from penetrating into the organic light emitting device layer. Also, a layer provided on the array substrate may include an inorganic light emitting layer (for example, a nano-sized material layer, a quantum dot, or the like). As another embodiment, the layer provided on the array substrate may include a micro light emitting diode.
The display panel may further include a backing such as a metal plate attached on the display panel. However, embodiments are not limited to the metal plate, and the display panel may include another structure.
In the present disclosure, the display apparatus including a vibration device may be applied to vehicles as a user interface module such as a central control panel for automobiles. For example, the display panel may be provided between occupants sitting on two front seats in order for a vibration of the display panel to be transferred to the inside of a vehicle. Therefore, an audio experience in a vehicle is improved in comparison with a case where speakers are disposed on interior sides of the vehicle.
Features of various embodiments of the present disclosure may be partially or overall coupled to or combined with each other, and may be variously inter-operated with each other and driven technically as those skilled in the art can sufficiently understand. The embodiments of the present disclosure may be carried out independently from each other, or may be carried out together in co-dependent relationship.
Hereinafter, a display apparatus according to the present disclosure will be described in detail with reference to the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Since a scale of each of elements shown in the accompanying drawings is different from an actual scale for convenience of description, the present disclosure is not limited to the shown scale.
With reference to
While the display device 100 is displaying an image, the display device 100 may vibrate based on driving of the one or more vibration device 500 to output a sound PVS (or a panel vibration sound) in a forward direction (or a front region) FD thereof. Alternatively, in a state where the display device 100 does not display an image, the display device 100 may vibrate based on driving of the one or more vibration device 500 to output the sound PVS in the forward direction FD thereof. Accordingly, the display device 100 according to an embodiment of the present disclosure may display an image and may generate (or output) the sound PVS. For example, the display device 100 may be referred to as a display member, a display layer, a display module, a vibration member, a vibration plate, a vibration object member, or a display speaker, but embodiments of the present disclosure are not limited thereto.
The display device 100 according to an embodiment of the present disclosure may include a display panel 110 that displays an image. For example, the image may include an electronic image or digital image, etc. For example, the display panel 110 may display an image by emitting light. The display panel 110 may be all kinds of flat display panels or curved display panels such as a liquid crystal display panel, an organic light emitting display panel, a quantum dot light emitting display panel, a micro light emitting diode display panel, or an electrophoresis display panel. The display panel 110 may be a flexible display panel. For example, the display panel 110 may be a flexible light emitting display panel, a flexible electrophoresis display panel, a flexible electrowetting display panel, a flexible micro light emitting diode display panel, or a flexible quantum dot light emitting display panel, but embodiments of the present disclosure are not limited thereto.
The display panel 110 may vibrate according to the vibration of the vibration device 500 and directly output the sound PVS toward the front direction FD, whereby the display panel 110 may be a vibration member, a vibration plate, or speaker that directly generates sound PVS. For example, when the display device 100 generates sound PVS, the display device 100 may be a vibration plate, a panel speaker, or a plat speaker that directly generates sound (PVS), but embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, the display panel 110 may include a pixel circuit disposed on a substrate (or base substrate), and a pixel array layer (or display part) connected to the pixel circuit and having an anode electrode, a cathode electrode and a light emitting layer. The anode electrode may be referred to as a first electrode or a pixel electrode, etc., but embodiments of the present disclosure are not limited thereto. The cathode electrode may be referred to as a second electrode or a common electrode, etc., but embodiments of the present disclosure are not limited thereto. The display panel 110 may display an image in a type such as a top emission type, a bottom emission type, or a dual emission type, based on a structure of the pixel array layer. In the top emission type, visible light emitted from the pixel array layer may be irradiated onto a region in front of the substrate to allow an image to be displayed, and in the bottom emission type, the visible light emitted from the pixel array layer may be irradiated onto a rearward region behind the substrate to allow an image to be displayed.
The display panel 110 according to an embodiment of the present disclosure may include a pixel array part disposed at a pixel area which is configured by a plurality of gate lines and/or a plurality of data lines. The pixel array part may include a plurality of pixels which display an image based on a signal supplied through the signal lines. The signal lines may include a gate line, a data line and a pixel driving power line, etc.
Each of the plurality of pixels may include a pixel circuit layer including a driving thin film transistor (TFT) provided at the pixel area, an anode electrode electrically connected to the driving TFT, a light emitting layer formed on the anode electrode, and a cathode electrode electrically connected to the light emitting layer.
The driving TFT may be provided at a transistor region of each pixel area provided at a substrate. The driving TFT may include a gate electrode, a gate insulation layer, a semiconductor layer, a source electrode, and a drain electrode. The semiconductor layer of the driving TFT may include silicon such as amorphous silicon (a-Si), polysilicon (poly-Si), or low temperature poly-Si or may include oxide such as indium-gallium-zinc-oxide (IGZO), but embodiments of the present disclosure are not limited thereto.
The anode electrode may be provided at an opening region provided at each pixel area and may be electrically connected to the driving TFT.
The light emitting layer according to an embodiment of the present disclosure may include an organic light emitting device provided on the anode electrode. The organic light emitting device may be implemented so that each pixel emits light of the same color (for example, white) or emits light of at least one or more of different colors (for example, red, green, and blue).
According to another embodiment of the present disclosure, the light emitting layer may include a micro light emitting diode device which is electrically connected to each of the anode electrode and the cathode electrode. The micro light emitting diode device may be a light emitting diode implemented as an integrated circuit (IC) type or a chip type and may include a first terminal electrically connected to the anode electrode and a second terminal electrically connected to the cathode electrode. The cathode electrode may be commonly connected to a light emitting device of the light emitting layer provided at each pixel area.
An encapsulation part may be formed on the substrate to surround the pixel array part, and thus, may prevent oxygen or water (or moisture) from penetrating into the light emitting layer of the pixel array part. The encapsulation part according to an embodiment of the present disclosure may be formed in a multi-layer structure where an organic material layer and an inorganic material layer are alternately stacked, but embodiments of the present disclosure are not limited thereto. The inorganic material layer may prevent oxygen or water (or moisture) from penetrating into the light emitting layer of the pixel array part. The organic material layer may be formed to have a thickness which is relatively thicker than the inorganic material layer, so as to cover particles occurring in a manufacturing process. For example, the encapsulation part may include a first inorganic layer, an organic layer on the first inorganic layer, and a second inorganic layer on the organic layer. The organic layer may be a particle covering layer. A touch panel may be disposed on the encapsulation part, or may be disposed on a rear surface of the pixel array part.
The display panel 110 according to an embodiment of the present disclosure may include an upper substrate, a lower substrate, and a liquid crystal layer. The upper substrate may be a first substrate or a thin film transistor (TFT) array substrate and may include a pixel array (or a display part or a display area) including a plurality of pixels which are respectively provided at a plurality of pixel areas defined by intersections between a plurality of gate lines and/or a plurality of data lines. Each of the plurality of pixels may include a TFT connected to a gate line and/or a data line, a pixel electrode connected to the TFT, and a common electrode which is provided adjacent to the pixel electrode and is supplied with a common voltage.
The upper substrate may further include a pad part provided at a first edge (a first non-display part or a first periphery) thereof and a gate driving circuit provided at a second edge (a second non-display part or a second periphery) thereof.
The pad part may transfer a signal, supplied from the outside, to the pixel array and/or the gate driving circuit. For example, the pad part may include a plurality of data pads connected to a plurality of data lines through a plurality of data link lines and/or a plurality of gate input pads connected to the gate driving circuit through a gate control signal line. For example, a size of the upper substrate may be greater than the lower substrate, but embodiments of the present disclosure are not limited thereto.
The gate driving circuit according to an embodiment of the present disclosure may be embedded (or integrated) into a second edge of the upper substrate and may be connected to the plurality of gate lines. For example, the gate driving circuit may be implemented with a shift register including a transistor, which is formed through the same process as the TFT provided at the pixel area. According to another embodiment of the present disclosure, the gate driving circuit may be implemented as an integrated circuit (IC) and may be provided at a panel driving circuit, without being embedded into the upper substrate.
The lower substrate may be a second substrate or a color filter array substrate and may include a pixel pattern, including an opening area overlapping with the pixel area formed in the upper substrate, and a color filter layer formed at the opening area. The lower substrate may have a size which is smaller than the upper substrate, but embodiments of the present disclosure are not limited thereto. For example, the lower substrate may overlap a portion, other than the first edge (or first periphery), of the upper substrate. The lower substrate may be attached to a portion, other than the first edge, of the upper substrate with a liquid crystal layer therebetween using a sealant.
The liquid crystal layer may be interposed between the upper substrate and the lower substrate and may include a liquid crystal including liquid crystal molecules where an alignment direction thereof is changed based on an electric field generated by the common voltage and a data voltage applied to a pixel electrode for each pixel.
A lower polarization member may be attached on a lower surface of the lower substrate and may polarize light which is incident from the backlight and travels to the liquid crystal layer. An upper polarization member may be attached on an upper surface of the upper substrate and may polarize light which passes through the upper substrate and is output to the outside.
The display panel 110 according to an embodiment of the present disclosure may drive the liquid crystal layer based on an electric field which is generated in each pixel by the data voltage and the common voltage applied to each pixel, and thus, may display an image based on light passing through the liquid crystal layer.
According to another embodiment of the present disclosure, in the display panel 110, the upper substrate may be implemented as the color filter array substrate, and the lower substrate may be implemented as the TFT array substrate. For example, the display panel 110 according to another embodiment of the present disclosure may have a type where an upper portion and a lower portion of the display panel 110 according to an embodiment of the present disclosure are reversed therebetween. For example, a pad part of the display panel 110 according to another embodiment of the present disclosure may be covered by a separate mechanism or structure.
The display panel 110 according to an embodiment of the present disclosure may include a bending portion which is bent or curved to have a curved shape or a certain curvature radius.
The bending portion of the display panel 110 may be provided at at least one or more of one periphery and the other periphery of the display panel 110 which are parallel to each other. The one periphery and/or the other periphery, where the bending portion is provided, of the display panel 110 may include only the non-display area, or may include a periphery of the display area and the non-display area. Here, the display panel 110 including the bending portion provided by bending of the non-display area may have a structure where a one-side bezel bending structure or a both-side bezel bending structure. Also, the display panel 110 including the periphery of the display area and the bending portion provided by bending of the non-display area may have a one-side active bending structure or a both-side active bending structure.
The display device 100 according to some embodiments of the present disclosure may further include a functional film 130 disposed on the display panel 110.
The functional film 130 may be attached on the display panel 110 using a transparent adhesive member. For example, the transparent adhesive member may include a pressure sensitive adhesive (PSA), an optical clear adhesive (OCA), or an optical clear resin (OCR), but embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, the functional film 130 may include an anti-reflection layer (or an anti-reflection film) for preventing reflection of external light to enhance outdoor visibility and a contrast ratio with respect to an image displayed by the display panel 110. For example, the anti-reflection layer may include a circular polarization layer (or a circular polarization film) which prevents external light, reflected by thin film transistors (TFT)s and/or lines disposed at the pixel array layer of the display panel 110, from traveling to the outside.
According to some embodiments of the present disclosure, the functional film 130 may further include a light path control layer (or a light path control film) for controlling a path of light output from the pixel array layer of the display panel 110 to the outside. The light path control layer may include a stacked structure where a high refraction layer (or layer having a high refractive index) and a low refraction layer (or layer having a low refractive index) are alternately stacked and may change a path of light incident from the pixel array layer to minimize a color shift phenomenon based on a viewing angle, and for example, the low refraction layer may be disposed on an uppermost layer of the light path control layer.
The display device 100 according to some embodiments of the present disclosure may further include a touch electrode part for a user interface using a user touch. The touch electrode part may be disposed between the display panel 110 and the functional film 130, or may be embedded into the display panel 110 based on an in-cell touch type. For example, the touch electrode part based on the in-cell touch type may include mutual capacitance type touch electrodes or self-capacitance type touch electrodes.
The display apparatus according to an embodiment of the present disclosure may further include a supporting member 300. The supporting member 300 may be disposed at a rear surface of the display device 100. For example, the supporting member 300 may support or fix the vibration device 500.
The supporting member 300 may be referred to as the other term such as a cover bottom, a plate bottom, a back cover, a set cover, a rear surface frame, a base frame, a metal frame, a metal chassis, a chassis base, a chassis, or m-chassis. Therefore, the supporting member 300 may be implemented as an arbitrary type frame or a plate structure disposed on a rear surface of the display device 100. The rear surface of the display device 100 may be referred to as one surface, a first surface, a rear surface, a lower surface, or a bottom surface, but embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, the supporting member 300 may include a first supporting member 310 and a second supporting member 350.
The first supporting member 310 may be disposed at the rear surface of the display device 100. The first supporting member 310 may cover the display device 100 (for example, a rear surface of the display panel 110). The first supporting member 310 may be spaced apart from a rearmost surface of the display device 100 with a gap space GS therebetween. The first supporting member 310 may support or fix the vibration device 500. The first supporting member 310 may protect the rear surface of the display device 100 from an external impact.
According to some embodiments of the present disclosure, the first supporting member 310 may cover the rearmost surface of the display device 100. For example, the first supporting member 310 may be a plate member which covers the whole rear surface of the display device 100. For example, an edge or a corner of the first supporting member 310 may have an inclined shape or a curved shape through a chamfer process or a corner rounding process.
According to some embodiments of the present disclosure, the first supporting member 310 may include a glass material, a metal material, or a plastic material. For example, the first supporting member 310 including a glass material may include one or more of sapphire glass and gorilla glass or a stacked structure (or a bonded structure or a laminated structure) thereof, but embodiments of the present disclosure are not limited thereto. For example, the first supporting member 310 including a metal material may include one or more of aluminum (Al), an Al alloy, a magnesium (Mg), or a Mg alloy, an iron (Fe)-nickel (Ni), and stainless steel, or may include an alloy material thereof or a bonded (or a laminated) structure.
The second supporting member 350 may be disposed at a rear surface of the first supporting member 310 and may cover the rear surface of the first supporting member 310. According to some embodiments of the present disclosure, the second supporting member 350 may be a plate member which covers the whole rear surface of the first supporting member 310. For example, an edge or a corner of the second supporting member 350 may have an inclined shape or a curved shape through a chamfer process or a corner rounding process.
According to some embodiments of the present disclosure, the second supporting member 350 may be formed of one or more among a glass material, a metal material, and a plastic material. The second supporting member 350 may be formed of a material differing from the first supporting member 310. For example, the second supporting member 350 may be formed of a glass material, and the first supporting member 310 may be formed of a metal material such as aluminum (Al) which is good in thermal conductivity, but embodiments of the present disclosure are not limited thereto. For example, the display apparatus may be improved in appearance design, based on the second supporting member 350 which is disposed at a rearmost surface and includes a glass material, and a rear surface of the display apparatus may use the first supporting member 310 including a metal material as a mirror surface.
According to some embodiments of the present disclosure, the second supporting member 350 may have a thickness, which is the same as or relatively thinner than the first supporting member 310, within an error range in a manufacturing process. For example, to more stably support the vibration device 500 and reduce a weight of the display apparatus, the first supporting member 310 may have a thickness which is relatively thicker than the second supporting member 350.
One or more vibration devices 500 may generate a sound PVS using the display device 100 as a vibration plate. For example, the one or more vibration device 500 may generate a sound PVS using the display panel 110 as a vibration plate.
The display apparatus according to some embodiments of the present disclosure may include one or more vibration device 500 which is disposed at a rear center portion (or center region) of the display device 100. For example, the one or more vibration device 500 may vibrate the rear center portion of the display device 100 to generate the sound PVS based on a vibration of the display device 100 in the forward direction FD of the display device.
According to another embodiment of the present disclosure, the display apparatus may include a first vibration device 500-1 disposed at a first region (or a left region) of the display device 100 and a second vibration device 500-2 disposed at a second region (or a right region) of the display device 100, with respect to the rear center portion of the display device 100. For example, a vibration device 500 according to another embodiment of the present disclosure may include a first vibration device 500-1 and a second vibration device 500-2. For example, the first vibration device 500-1 may vibrate a first rear region of the display device 100 to generate a sound PVS based on a vibration of the first region of the display device 100. The second vibration device 500-2 may vibrate a second rear region of the display device 100 to generate a sound PVS based on a vibration of the second region of the display device 100. The display apparatus according to another embodiment of the present disclosure may output a two-channel sound based on left-right sound separation by the first and second vibration devices 500-1 and 500-2. For example, the first vibration device 500-1 may be configured to output a left sound, and the second vibration device 500-2 may be configured to output a right sound.
According to another embodiment of the present disclosure, a connection member 333 may be disposed between the supporting member 300 and one or more the vibration device 500. For example, the supporting member 300 and the one or more vibration device 500 may be connected to each other by the connection member 330. For example, the connection member 330 may be a fourth connection member 333. The fourth connecting member 333 may include a screw and a nut. One or more vibration devices 500 may be disposed at the support member 300 by the fourth connection member 333.
According to another embodiment of the present disclosure, a first adhesive member 402 may be disposed between the display panel 100 and one or more the vibration device 500. For example, the display panel 110 and the one or more vibration devices 500 may be attached to each other by the first adhesive member 402. The first adhesive member 402 may include may include one or more among a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, a single-sided tape, a single-sided foam tape, a single-sided pad, a single-sided foam pad, an adhesive, and a bond, but embodiments of the present disclosure are not limited thereto. As illustrated in
The display apparatus according to an embodiment of the present disclosure may further include a middle frame 700.
The middle frame 700 may be disposed between a rear edge (or a rear periphery) of the display device 100 and a front edge (or a front periphery) of the supporting member 300. The middle frame 700 may support an edge of (or a periphery) each of the display device 100 and the supporting member 300. The middle frame 700 may surround at least one or more of side surfaces among each of the display device 100 and the supporting member 300. The middle frame 700 may provide a gap space GS between the display device 100 and the supporting member 300. The gap space GS may be referred to as an air gap, a vibration space, or a vibration device disposition space, but embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, the middle frame 700 may include a metal material or a plastic material. For example, the middle frame 700 may be formed of a metal material, for improving a side appearance design of the display apparatus and protecting side surfaces of the display apparatus.
According to some embodiments of the present disclosure, the middle frame 700 may be connected or coupled to a rear edge (or a rear periphery) of the display device 100 by a third adhesive member 707. The middle frame 700 may be connected or coupled to a front edge (or a front periphery) of the supporting member 300 by a fourth adhesive member 708. A front surface of the supporting member 300 may be referred to as the other surface, a second surface, or an upper surface, but embodiments of the present disclosure are not limited thereto. Also, the middle frame 700 may be referred to as a middle cabinet, a middle cover, or a middle chassis, but embodiments of the present disclosure are not limited thereto. Or, the middle frame 700 may be integrally formed with the second supporting member 350, and may be referred to as a second supporting member 350.
The middle frame 700 according to some embodiments of the present disclosure may include a supporting portion 710 and a sidewall portion 730. The supporting portion 710 may be a first portion, and the sidewall portion 730 may be a second portion, but embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, the supporting portion 710 may have a single tetragonal (e.g., quadrilateral) picture frame structure, but embodiments of the present disclosure are not limited thereto. For example, the supporting portion 710 may be between the rear edge of the display device 100 and the front edge of the supporting member 300 to have a plurality of division bar shapes.
The supporting portion 710 may be disposed between the rear edge (or the rear periphery) of the display device 100 and the front edge (or the front periphery) of the supporting member 300, and thus, may provide a gap space GS between the display device 100 and the supporting member 300. A front surface of the supporting portion 710 may be coupled to the rear edge of the display device 100 by the third adhesive member 707, and a rear surface of the supporting portion 710 may be coupled or connected to the front edge of the supporting member 300 by the fourth adhesive member 708. The supporting portion 710 may have a thickness (or height) corresponding to a total thickness of the vibration device 500. For example, a thickness of the supporting portion 710 may be adjusted based on a thickness of the vibration device 500 between the display device 100 and the supporting member 300, a thickness of the third adhesive member 707, and a thickness of the fourth adhesive member 708.
The third adhesive member 707 may be between the rear edge of the display device 100 and a front surface of the supporting portion 710. For example, the third adhesive member 707 may be an adhesive resin, a double-sided tape, or a double-sided adhesive foam pad, but embodiments of the present disclosure are not limited thereto.
The fourth adhesive member 708 may be between the front edge of the supporting member 300 and a rear surface of the supporting portion 710. For example, the fourth adhesive member 708 may be an adhesive resin, a double-sided tape, or a double-sided adhesive foam pad, but embodiments of the present disclosure are not limited thereto. The fourth adhesive member 708 may be formed of a material differing from the third adhesive member 707.
The sidewall portion 730 may be vertically coupled to an outer surface of the supporting portion 710 in parallel with a thickness direction Z of the display apparatus. The sidewall portion 730 may surround all of an outer surface (or an outer sidewall) of the display device 100 and an outer surface (or an outer sidewall) of the supporting member 300, thereby protecting the outer surface of each of the display device 100 and the supporting member 300 and improving an appearance design of a side surface of the display apparatus. The middle frame 700 according to some embodiments of the present disclosure may be coupled or connected to each other such that the supporting portion 710 and sidewall portion 730 form a single body, and thus, may have a picture frame structure having “I—”-shaped cross-sectional surface.
The display apparatus according to an embodiment of the present disclosure may include an adhesive member instead of the middle frame 700.
The adhesive member may be between the rear edge of the display device 100 and the front edge of the supporting member 300 and may provide the gap space GS between the display device 100 and the supporting member 300. The adhesive member may have a thickness (or a height) corresponding to a total thickness of the vibration device 500. For example, a thickness of the adhesive member may be adjusted based on the thickness of the vibration device 500 between the display device 100 and the supporting member 300. The adhesive member may perform the same function as that of the supporting portion 710 of the middle frame 700.
When the display apparatus includes the adhesive member instead of the middle frame 700, the supporting member 300 may include a sidewall cover portion which surrounds all of an outer surface (or an outer sidewall) of the display device 100, an outer surface (or an outer sidewall) of the supporting member 300, and an outer surface (or an outer sidewall) of the adhesive member.
The sidewall cover portion may extend from an end of the second supporting member 350 and may be vertically bent to be parallel to a thickness direction Z of the display apparatus. According to some embodiments of the present disclosure, the sidewall cover portion may have a single sidewall structure or a hemming structure. The hemming structure may denote a structure where ends of an arbitrary member is bent in a curved shape to overlap each other, or are spaced apart from each other in parallel. For example, the sidewall cover portion having the hemming structure may include a first sidewall, which extends from the end of the second supporting member 350 and is vertically bent to be parallel to the thickness direction Z of the display apparatus, and a second sidewall which extends from an end of a first sidewall and is bent to be parallel to the first sidewall. The second sidewall may be between the outer surface of the display device 100 and the first sidewall. For example, the second sidewall may not be exposed at an outermost side surface of the display apparatus and may be covered by the first sidewall, thereby improving a side appearance design of the display apparatus.
Therefore, the display apparatus according to an embodiment of the present disclosure may output a sound PVS to the forward direction FD based on a vibration of the display device 100 (for example, the display panel 110) caused by a vibration of the one or more vibration device 500 disposed between the display device 100 and the supporting member 300, thereby enhancing an immersion experience of a viewer watching an image displayed by the display apparatus.
Moreover, in the display apparatus according to an embodiment of the present disclosure, since a sound PVS is generated based on a vibration of the display device 100 (for example, the display panel 110), a separate speaker may not be provided, thereby enhancing a design of a set apparatus and a degree of freedom in disposition of elements.
With reference to
For example, the magnet 1620 may be disposed on the first plate 1610. The magnet 1620 may use a sintered magnet of barium ferrite, and the magnet 1620 may be formed of iron (III) oxide (Fe2O3), barium carbonate (BaCO3; “witherite”), neodymium (Nd) magnet, strontium ferrite (Fe12O19Sr) with improved magnetic component, an alloy cast magnet including aluminum (Al), nickel (Ni), and cobalt (Co), and/or the like. As another embodiment, the neodymium magnet may be neodymium-iron-boron (Nd—Fe—B). However, embodiments of the present disclosure are not limited to these materials or examples.
A center pole 1630 may be disposed on the magnet 1620. The center pole 1630 may be referred to as pole pieces. As another embodiment of the present disclosure, pole pieces may be further disposed on the center pole 1630.
The bobbin 1650 may surround around the magnet 1620. For example, the bobbin 1650 may be disposed on the first plate 1610. The bobbin 1650 may have a circular shape or an oval shape, but embodiments of the present disclosure are not limited thereto. The oval shape may have an elliptical shape, a rectangular shape with rounded corners, or non-circular curved shape having a width different from its height, but the present embodiment is not limited thereto. For example, in the bobbin 1650 having the oval shape, a ratio of a long-axis diameter to a short-axis diameter may be configured to 1.3:1 to 2:1. The bobbin 1650 having the oval shape may more improve a sound of a high-pitched sound band than a circular shape and may decrease the occurrence of heat caused by a vibration, and thus, may have an excellent heat dissipation characteristic.
The coil 1660 according to some embodiments of the present disclosure may be wound to surround an outer circumference surface of the bobbin 1650 and may be supplied with a sound-generating current (or a voice current) from the outside. The coil 1660 may be lowered or raised along with the bobbin 1650. The coil 1660 may be referred to as a voice coil. When a current is applied to the coil 1660, a whole portion of the bobbin 1650 may move upward and downward according to Fleming's left hand rule based on an application magnetic field generated around the coil 1660 and an external magnetic field generated around the magnet 1620, and a sound PVS or a sound wave may be generated based on a vibration of the display device 100 caused by a vertical movement (or vibration) of the bobbin 1650.
The bobbin 1650 according to some embodiments of the present disclosure may be disposed on the first plate 1610 to surround around the magnet 1620. According to an embodiment of the present disclosure, as the coil 1660 is wound to surround an outer circumference surface of the bobbin 1650, heat occurring in the coil 1660 may be transferred to the bobbin 1650, and the coil 1660 may include a material which is relatively good in heat dissipation characteristic, for decreasing an image quality defect affecting the display panel 110 due to the heat of the bobbin 1650.
Because the bobbin 1650 according to some embodiments of the present disclosure vibrates upward and downward, an eccentric vibration (or a horizontal vibration) may occur due to a vertical vibration, and an eccentric vibration of the bobbin 1650 may be affected by a weight of the bobbin 1650. A weight of the bobbin 1650 may be affected by a weight of the coil 1660. Therefore, when a weight of the coil 1660 is reduced, the eccentric vibration of the bobbin 1650 may decrease. Therefore, considering heat transferred to the bobbin 1650 and the eccentric vibration of the bobbin 1650, the coil 1660 may have a relatively good heat dissipation characteristic because thermal conductivity thereof is better than copper which is a material of a general coil, and may include an aluminum (Al) material which has a relatively good heat dissipation characteristic and is relatively lightweight compared to copper.
Moreover, in aluminum, since oxide is formed in air, welding may not be easy in manufacturing the vibration device 500, and thus, the coil 1660 according to an embodiment of the present disclosure may include an aluminum (Al) layer (or a first metal layer) for dissipating heat and a metal covering layer (or a second metal layer) surrounding the Al layer. The metal covering layer may include one of copper (Cu), silver (Ag), and gold (Au). For example, the coil 1660 may be a copper clad aluminum wire which copper covers. The metal covering layer may be formed as a thin film type outside the first metal layer, and thus, may not greatly affect an increase in weight of the coil 1660. Therefore, a weight of the coil 1660 according to an embodiment of the present disclosure may decrease by about 60% compared to a coil including only Cu or a Cu wire.
According to some embodiments of the present disclosure, the bobbin 1650 may include a structure including a material obtained by processing pulp or paper, aluminum (Al) or magnesium (Mg) or an alloy thereof, or synthetic resin such as polyimide. For example, the bobbin 1650 may be implemented with a polyimide film which is relatively good in heat dissipation characteristic and is relatively lightweight, for preventing an image quality defect of the display panel 110 caused by heat occurring in the coil 1660.
The polyimide film may have physical properties which are not changed within a wide temperature range from −273° C. to 400° C. and may have a heat resistance, electrical insulation, flexibility, and nonflammable. Also, since the polyimide film is good in thermal and mechanical strength, the polyimide film may enhance the reliability of the bobbin 1650, and the occurrence of heat caused by a vibration of the bobbin 1650 may be reduced based on an excellent heat dissipation characteristic. For example, the polyimide film may be KAPTON and may be a condensation of pyromellitic dianhydride and 4,4′-oxydianiline, but embodiments of the present disclosure are not limited thereto.
The center pole 1630 may be accommodated or inserted into the bobbin 1650 and may guide raising or lowering of the bobbin 1650. For example, since the center pole 1630 is accommodated or inserted into the bobbin 1650, an outer circumference surface of the center pole 1630 may be surrounded by the bobbin 1650. The center pole 1630 may be referred to as an elevation guider or pole pieces, but embodiments of the present disclosure are not limited thereto.
A second plate 1610′ may be disposed on the first plate 1610. The second plate 1610′ may be yoke, but embodiments of the present disclosure are not limited thereto. One or more among the first plate 1610 and the second plate 160′ may be formed of a magnetic material such as iron (Fe), but embodiments of the present disclosure are not limited thereto.
A frame 1640 may be disposed at outside around the second plate 1610′. The damper 1670 may be disposed between the frame 1640 and the bobbin 1650. The frame 1640 according to some embodiments of the present disclosure may be provided at the front edge of the second plate 1610′ to have a certain height and the same shape as that of the bobbin 1650. According to another embodiment of the present disclosure, the frame 1640 may include a hollow portion that is provided at the front edge of the second plate 1610′ to have a certain height and the same shape as that of the bobbin 1650.
The damper 1670 may be connected between the frame 1640 and the vibration device. For example, the damper 1650 may be connected between the frame 1640 and the bobbin 1650. The damper 1670 may be referred to as a spider, a suspension, or an edge, but embodiments of the present disclosure are not limited thereto.
One end or one portion of the damper 1670 according to some embodiments of the present disclosure may be connected to the frame 1640, and the other end or the other portion of the damper 1670 may be connected to an upper outer surface of the bobbin 1650. The damper 1670 may have a creased structure between the one end and the other end thereof and may be contracted and relaxed based on a vertical motion of the bobbin 1650 to control a vibration of the bobbin 1650. The damper 1670 may be connected between the bobbin 1650 and the frame 1640 and may limit a vibration distance of the bobbin 1650 with a restoring force. For example, when the bobbin 1650 vibrates by a certain distance or more or vibrates by a certain distance or less, the bobbin 1650 may be restored to an original position by the restoring force of the damper 1670.
The one or more vibration device 500 according to some embodiments of the present disclosure may further include a bobbin ring 1652.
The bobbin ring 1652 may be disposed at a front surface (or a front end portion) of the bobbin 1650. The bobbin ring 1652 may transfer a rising and lowering motion (or vibration) of the bobbin 1650 to the rear surface of the display device 100. The bobbin ring 1652 according to some embodiments of the present disclosure may have a ring shape disposed at the front surface of the bobbin 1650, a disc shape (or a circular plate shape) covering the whole front surface of the bobbin 1650, or a cap shape surrounding the front surface and the upper outer surface of the bobbin 1650, but the shapes are not limited thereto. For example, the bobbin ring 1652 may be referred to as a bobbin protection member, but embodiments of the present disclosure are not limited thereto.
In the display apparatus according to an embodiment of the present disclosure, the display device 100 may further include a heat dissipation member 102.
The heat dissipation member 102 may be disposed at a rear surface of the display device 100. For example, the heat dissipation member 102 may be disposed between the one or more vibration device 500 and the display device 100. The heat dissipation member 102 according to an embodiment of the present disclosure may be attached at a rear surface of the display device 100 to overlap the vibration device 500. A first adhesive member 401 may be disposed between the heat dissipation member 102 and the display device 100. For example, the first adhesive member 401 may be disposed between the heat dissipation member 102 and the display panel 110. For example, the heat dissipation member 102 may be attached at the display panel 110 by the first adhesive member 401. For example, the heat dissipation member 102 may be attached at a rear surface of the display panel 110 by the first adhesive member 401. The first adhesive member 401 may include one or more among a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, a single-sided tape, a single-sided foam tape, a single-sided pad, a single-sided foam pad, an adhesive, and a bond, but embodiments of the present disclosure are not limited thereto. A second adhesive member 403 may be disposed between the heat dissipation member 102 and the vibration device 500. For example, the heat dissipation member 102 may be attached on the vibration device 500 by the second adhesive member 403. For example, the second adhesive member 403 may be disposed between the heat dissipation member 102 and the bobbin ring 1652. The heat dissipation member 102 may be attached to the bobbin ring 1652 by the second adhesive member 403. The second adhesive member 403 may include one or more among a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, a single-sided tape, a single-sided foam tape, a single-sided pad, a single-sided foam pad, an adhesive, and a bond, but embodiments of the present disclosure are not limited thereto. As illustrated in
Because the heat dissipation member 102 is disposed at the rear surface of the display device 100 to overlap the vibration device 500, heat occurring in driving of the vibration device 500 may be diffused toward the display device 100, thereby preventing the performance of the vibration device 500 from being reduced by heat. Also, with respect to a center portion of the vibration device 500, the heat dissipation member 102 may have a size which is relatively greater than or equal to the vibration device 500, and thus, heat occurring in driving of the vibration device 500 may be diffused to a wide region, thereby preventing heat from being intensively transferred to a local region of the display device 100 overlapping the vibration device 500. Accordingly, the local non-uniform luminance of the display device 100 may be prevented or minimized.
According to some embodiments of the present disclosure, the heat dissipation member 102 may include a metal material having high heat conductivity, and for example, may include one material of aluminum (Al), copper (Cu), silver (Ag), and magnesium (Mg) or an alloy thereof, but embodiments of the present disclosure are not limited thereto. The heat dissipation member 102 may be referred to as the other term such as a heat diffusion member, a heat diffusion sheet, a heat diffusion layer, a heat diffusion plate, a heat sink, a heat dissipation sheet, or a heat dissipation plate, but embodiments of the present disclosure are not limited thereto.
With reference to
A fourth connection member 333 may be disposed at the extension portion 1612. The fourth connection member 333 may include a screw 1720 and a nut 1730. For example, the nut 1730 may be disposed in the supporting member 300. The one or more vibration device 500 may be coupled to the second supporting member 350 by the nut 1730 and the screw 1720. Accordingly, the vibration device 500 may be accommodated into a supporting hole 350S which is provided at the second supporting member 350.
The nut 1730 may be, for example, a self-clinching nut. An example of the self-clinching nut may include PEM® nut, but embodiments of the present disclosure are not limited thereto. When the self-clinching nut is used, a vibration generated by the vibration device 500 may be absorbed by a portion of the self-clinching nut which is the nut 1730, and thus, a vibration transferred to the supporting member 300 may be reduced.
In
With reference to
The vibration device 500 may be coupled to the supporting member 300 by the nut 1730 by a press-fit scheme (or an indentation method) without a supporting hole of the supporting member 300 (for example, a second supporting member 350). The press-fit scheme may use a saw-toothed press-fit scheme, but an embodiment of the present disclosure is not limited to a coupling scheme or shape. Therefore, the vibration device 500 may be disposed inside of the display apparatus. For example, the vibration device 500 may be disposed between the display panel 110 and the supporting member 300 by the fourth connection member 333. Therefore, a vibration device may be disposed inside of the display apparatus, and thus, a supporting hole of a supporting member may not be provided, thereby preventing the penetration of particles from the outside through the supporting hole of the supporting member. Also, the vibration device may not be exposed at a rear surface of the supporting member, and thus, a display apparatus having a sense of beauty in external appearance may be provided, thereby preventing the damage of the vibration device. Also, the vibration device may be disposed inside of the display apparatus, and thus, a sound of a low-pitched sound band of the vibration device may be more enhanced.
With reference to
For example, the vibration device 500 may be coupled to the supporting member 300 by the nut 1730 by the press-fit scheme (or the indentation method) without a supporting hole of the supporting member 300. The press-fit scheme may use a saw-toothed press-fit scheme, but an embodiment of the present disclosure is not limited to a coupling scheme or shape. Therefore, the vibration device 500 may be disposed inside of the display apparatus. For example, the vibration device 500 may be disposed between the display panel 110 and the supporting member 300 by the fourth connection member 333. Therefore, a vibration device may be disposed inside of the display apparatus, and thus, a supporting hole of a supporting member may not be provided, thereby preventing the penetration of particles from the outside through the supporting hole of the supporting member. Also, the vibration device may not be exposed at a rear surface of the supporting member, and thus, a display apparatus having an aesthetic sensibility in external appearance may be provided, thereby preventing the damage of the vibration device. Also, the vibration device may be disposed inside of the display apparatus, and thus, a sound of the low-pitched sound band of the vibration device may be more enhanced.
With reference to
The one or more vibration device 500 according to an embodiment of the present disclosure may be disposed at a structure 510 disposed at the supporting member 300. The one or more vibration device 500 disposed at the structure 510 to vibrate the display device 100 may be a single-body structure or a single structure which is modularized as one element (or one component). For example, the structure 510 and the one or more vibration device 500 may be manufactured as a finished product such as a single-body structure or a single structure by a modularization process (or an assembly process) instead of an assembly process performed on a display apparatus. After the structure 510 and the one or more vibration device 500 are manufactured as a finished product, a gap space GS between the display device 100 and the supporting member 300 may be mounted or disposed by a relatively simple element (or component) mounting (or placing) process in an assembly process performed on a display apparatus. Accordingly, in a display apparatus according to an embodiment of the present disclosure, the assembly of the one or more vibration device 500 may be improved in a process of assembling modules, thereby enhancing a production yield rate.
According to some embodiments of the present disclosure, the first supporting member 310 and the second supporting member 350 may be coupled or connected to each other by a connection member 330. For example, the connection member 330 may be an adhesive resin, a double-sided tape, or a double-sided adhesive foam pad. The connection member 330 may have elasticity for absorbing an impact.
According to some embodiments of the present disclosure, the connection member 330 may be disposed at a whole region between the first supporting member 310 and the second supporting member 350.
According to some embodiments of the present disclosure, the connection member 330 may be provided in a mesh structure including an air gap between the first supporting member 310 and the second supporting member 350. For example, a portion of the air gap between the first supporting member 310 and the second supporting member 350 may be used as a disposition region of a signal transfer member or a cable connected to the vibration device 500.
The one or more vibration device 500 may generate a sound PVS using the display device 100 as a vibration plate. For example, the one or more vibration device 500 may generate a sound PVS using the display panel 110 as a vibration plate.
The display apparatus according to some embodiments of the present disclosure may include one or more vibration device 500 which is disposed at a rear center portion (or center region) of the display device 100. For example, the one or more vibration device 500 may vibrate the rear center portion of the display device 100 to generate the sound PVS to the forward direction (FD) of the display device 100 based on a vibration of the display device 100.
According to another embodiment of the present disclosure, the display apparatus may include a first vibration device 500-1 disposed at a first region (or a left region) of the display device 100 and a second vibration device 500-2 disposed at a second region (or a right region) of the display device 100, with respect to the rear center portion of the display device 100. For example, the first vibration device 500-1 may vibrate a first rear region of the display device 100 to generate a sound PVS based on a vibration of the first region of the display device 100. The second vibration device 500-2 may vibrate a second rear region of the display device 100 to generate a sound PVS based on a vibration of the second region of the display device 100. The display apparatus according to another embodiment of the present disclosure may output a two-channel sound based on left-right sound separation by the first and second vibration devices 500-1 and 500-2. For example, the first vibration device 500-1 may be configured to output a left sound, and the second vibration device 500-2 may be configured to output a right sound.
According to some embodiments of the present disclosure, the one or more vibration device 500 may be between the display device 100 and the supporting member 300 and may vibrate the display device 100 to generate a sound PVS. A rear surface of the one or more vibration device 500 may be covered by the supporting member 300, and thus, may be concealed without being directly exposed at an outermost rear surface of the display apparatus. Therefore, since the rear surface of the at least one vibration device 500 is covered by the supporting member 300, the display apparatus according to an embodiment of the present disclosure may have a clean back design where a rear surface or a portion of the at least one vibration device 500 is not exposed or is not seen by eyes of a user, thereby improving a rear appearance design.
According to some embodiments of the present disclosure, the structure 510 disposed at the supporting member 300 and the one or more vibration device 500 disposed at the structure 510 to vibrate the display device 100 may be a single-body structure or a single structure which is modularized as one element (or one component). For example, the one or more the vibration device 500 may be manufactured as a finished-product type such as a single-body structure or a single structure through a modularization process (or an assembly process) instead of an assembly process performed on the display apparatus, and then, the at least one vibration device 500 may be mounted or disposed in a gap space GS between the display device 100 and the supporting member 300 through a relatively simple element (or component) mounting (or placing) process in the assembly process performed on the display apparatus. Accordingly, in the display apparatus according to an embodiment of the present disclosure, the assembly of the one or more vibration device 500 may be improved in a process of assembling modules, thereby enhancing a production yield rate.
The one or more vibration device 500 according to an embodiment of the present disclosure may directly or indirectly vibrate the display device 100. For example, the one or more vibration device 500 may be directly connected to the display panel 110 and may directly vibrate the display panel 110. As another embodiment of the present disclosure, the one or more vibration device 500 may indirectly vibrate the display panel 110 by a vibration transfer member directly connected to the display panel 110. For example, the vibration transfer member may be implemented in a corresponding vibration device 500 or the display device 100. For example, the vibration transfer member implemented in the one or more vibration device 500 may be vibration transfer plate (or a vibration transfer sheet) contacting (or coupled to) the display device 100. Also, the vibration transfer member implemented in the display device 100 may be a backlight module disposed at the rear surface of the display panel 110, or may be a vibration transfer plate (or a heat dissipation plate) coupled to (or attached on) the rear surface of the display panel 110.
Therefore, the display apparatus according to an embodiment of the present disclosure may output a sound PVS to the forward region FD based on a vibration of the display device 100 (for example, the display panel 110) caused by a vibration of the one or more vibration device 500 disposed between the display device 100 and the supporting member 300, thereby enhancing an immersion experience of a viewer watching an image displayed by the display apparatus.
Moreover, in the display apparatus according to an embodiment of the present disclosure, since a sound PVS is generated based on a vibration of the display device 100, a separate speaker may not be provided, thereby enhancing a design of a set apparatus and a degree of freedom in disposition of elements.
Moreover, because the vibration device 500 is disposed in the gap space GS between the display device 100 and the supporting member 300, a rear surface of the vibration device 500 may be covered by the supporting member 300, and thus, the display apparatus according to an embodiment of the present disclosure may have a clean back design where the rear surface or a portion of the vibration device 500 is not exposed or is not seen by a user, thereby improving a rear appearance design of the display apparatus.
Moreover, in the display apparatus according to an embodiment of the present disclosure, the structure 510 and the vibration device 500 may be modularized as one element and may be mounted at the gap space GS between the display device 100 and the supporting member 300 through a relatively simple element mounting process, and thus, the assemble of the vibration device 500 may be improved in an assembly process performed on the display apparatus, thereby enhancing a production yield rate.
With reference to
The structure 510 may be disposed at a supporting member 300. For example, the structure 510 may be disposed at the supporting member 300 and may fix or support the vibration device 500. According to some embodiments of the present disclosure, the structure 510 may be a metal plate which includes a metal material and has a plate shape. The structure 510 may be referred to as a supporting structure, a module structure, a plate mechanism, a base structure, a base mechanism, a module supporting frame, or a module supporting plate, but embodiments of the present disclosure are not limited thereto.
The structure 510 may be disposed at or fixed to the supporting member 300 by a first member 410 (or a module member). A rear surface of the structure 510 may be covered by the supporting member 300, and thus, may be concealed without being directly exposed at an outermost rear surface of a display apparatus. For example, the rear surface of the structure 510 may be fully covered by the supporting member 300, and thus, may be concealed without being directly exposed at the outermost rear surface of the display apparatus.
The first member 410 according to some embodiments of the present disclosure may be a double-sided adhesive member between the structure 510 and the supporting member 300. The double-sided adhesive member may be a double-sided tape or a double-sided foam tape, but embodiments of the present disclosure are not limited thereto. One surface (or a front surface) of the first member 410 may be coupled to or disposed at the rear surface of the structure 510, and the other surface (or a rear surface) of the first member 410 may be disposed at or fixed to the supporting member 300 (for example, a front surface of a first supporting member 310). For example, the other surface of the first member 410 may be fixed to or disposed on the front surface of the first supporting member 310 in a state where a lower protection sheet is delaminated therefrom.
According to some embodiments of the present disclosure, the first member 410 may be coupled (or modularized) to a rearmost surface of a vibration generating device 501 modularized as one element, for convenience of assembly between the vibration generating device 501 and a display device 100, and may be protected by a lower protection sheet. For example, the lower protection sheet may be referred to as a lower delamination sheet or a bottom liner or a lower liner, but embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, the double-sided adhesive member which is the first member 410 may further include a heat transfer material. The heat transfer material may quickly transfer heat, occurring in the vibration generating device 501, toward the supporting member 300, and thus, may dissipate the heat of the vibration generating device 501 toward the supporting member 300, thereby preventing or minimizing the local luminance non-uniformity of the display device 100 which occurs because heat occurring in driving of the vibration generating device 501 is locally transferred to a region of the display device 100 overlapping the vibration generating device 501. According to some embodiments of the present disclosure, the heat transfer material may include a conductive particle or a conductive layer, but embodiments of the present disclosure are not limited thereto. For example, the double-sided adhesive member including the heat transfer material may be referred to as a heat transfer tape or a heat dissipation tape, but embodiments of the present disclosure are not limited thereto.
The vibration device 500 may be disposed at the structure 510 and may vibrate the display device 100. For example, the vibration device 500 may be disposed at the structure 510 and may vibrate the display panel 110. An integration member 520 may be disposed between the vibration device 500 and the structure 510. For example, the vibration device 500 may be provided as one body with or disposed at the structure 510 by the integration member 520. For example, the integration member 520 may be referred to as a module integration member, but embodiments of the present disclosure are not limited thereto.
The vibration device 500 may include any sound device or a vibration generator that vibrates the display device 100 according to an electrical signal. For example, the vibration device 500 may be configured to vibrate the display device 100 with a current (or a voice current) applied thereto based on Fleming's Left-Hand Rule. The vibration device 500 may be referred to as a sound generating unit, a sound generating module, a vibration generating module, a vibration generating unit, an actuator, an exciter, or a transducer, but embodiments of the present disclosure are not limited thereto.
The vibration device 500 may include an actuator (or an exciter) disposed to contact a rear surface of the display device 100. For example, the vibration device 500 may include a base plate 531, a magnet 532, a center pole 533, a bobbin 534, a coil 535, an edge frame 536, and a damper 537. For example, the vibration device 500 may be a vibration device including a voice coil, but embodiments of the present disclosure are not limited thereto.
The base plate 531 may be disposed at or fixed to the structure 510 and may be a main body of the vibration device 500. The base plate 531 may support one or more among the magnet 532, the center pole 533, and the edge frame 536. The base plate 531 may include a metal material having magnetism like iron (Fe). The base plate 531 may be referred to as a lower plate, a base frame, or a yoke, but embodiments of the present disclosure are not limited thereto.
The base plate 531 may include a groove portion which accommodates the magnet 532 and the bobbin 534. For example, the groove portion may be provided concavely from an upper surface of the base plate 531 to have a circular shape.
The integration member 520 may be disposed between the base plate 531 and the structure 510. For example, the base plate 531 may be provided as one body with or disposed at the structure 510 by the integration member 520.
The integration member 520 may be an adhesive member. The adhesive member may be disposed between an extension portion (or a placement portion) 531a of the base plate 531 and the structure 510, and thus, the base plate 531 may be disposed at the structure 510. The integration member 520 may be an adhesive or a double-sided tape, but embodiments of the present disclosure are not limited thereto.
According to another embodiment of the present disclosure, the integration member 520 may include a plurality of screws. The plurality of screws may pass through the extension portion 531a of the base plate 531 and may be fastened to the structure 510, and thus, the base plate 531 may be disposed at the structure 510.
According to another embodiment of the present disclosure, the integration member 520 may include a bolt and a nut. The nut may be disposed at or fixed to the structure 510 overlapping the extension portion 531a of the base plate 531. The bolt may pass through the extension portion 531a of the base plate 531 and may be fastened to the nut. The nut according to some embodiments of the present disclosure may be a self-clinching nut disposed at the structure 510, but embodiments of the present disclosure are not limited thereto. The self-clinching nut may be a PEM® nut.
The magnet 532, the center pole 533, the bobbin 534, and the coil 535 may be referred to as a magnetic circuit part or a magnetic vibration part, which is installed on the base plate 531 to vibrate the display device 100.
The magnetic circuit part according to some embodiments of the present disclosure may have an external or dynamic magnetic type structure where the magnet 532 is disposed outward from the coil 535, or may have an internal magnetic type or micro type structure where the magnet 532 is disposed inward from the coil 535. The vibration device 500 including the magnetic circuit part having the internal magnetic type structure may have a totally small size and a low leakage magnetic flux. The vibration device 500 according to some embodiments of the present disclosure may have an external magnetic type or internal magnetic type structure. Hereinafter, an example where the vibration device 500 has the internal magnetic type will be described. Descriptions of the magnet 532, the center pole 533, the bobbin 534, and the damper 537 may be the same as or similar to descriptions give above with reference to
The magnet 532 according to some embodiments of the present disclosure may be inserted or accommodated into the groove portion of the base plate 531. The magnet 532 may be a permanent magnet capable of being inserted or accommodated into the bobbin 534. For example, the magnet 532 may be a permanent magnet having a cylindrical shape capable of being inserted or accommodated into the bobbin 534.
The bobbin 534 according to some embodiments of the present disclosure may be disposed on the base plate 531 and surround around the magnet 532. The center pole 533 may be accommodated or inserted into the bobbin 534 and may guide raising or lowering of the bobbin 534. The center pole 533 may be referred to as an elevation guider or pole pieces, but embodiments of the present disclosure are not limited thereto.
The edge frame 536 may be disposed at a front edge (or a front periphery) of the base plate 531 and may support the damper 537. The edge frame 536 according to some embodiments of the present disclosure may be provided at the front edge of the base plate 531 to have a certain height and the same shape as that of the bobbin 534. According to another embodiment of the present disclosure, the edge frame 536 may include a hollow portion that is provided at the front edge of the base plate 531 to have a certain height and the same shape as that of the bobbin 534.
The damper 537 may be disposed or connected between the edge frame 536 and the magnetic circuit part. For example, the damper 537 may be disposed or connected between the edge frame 536 and the bobbin 534. The damper 537 may be referred to as a spider, a suspension, or an edge, but embodiments of the present disclosure are not limited thereto.
Because the vibration device 500 is disposed between the display device 100 and the supporting member 300, the vibration device 500 should have a relatively thin thickness so as to thinly reduce a thickness of the display apparatus or slim the display apparatus, and due to this, when a height (or a thickness) of the bobbin 534 is reduced, a sound pressure level may be lowered. Therefore, so as to solve a problem where a sound pressure level is lowered due to a reduction in height of the bobbin 534, the inventors have designed a structure where an area of the damper 537 disposed near the bobbin 534 is wide. When an area of the damper 537 is enlarged, the inventors have recognized that a space where a line for applying a current to the coil 535 is disposed is narrowed, causing interference between the line and the damper 537. Therefore, through various experiments, the inventors have configured the damper 537 which is formed of a conductor and performs a function of the line.
The damper 537 according to some embodiments of the present disclosure may include a metal material electrically connected to the coil 535. For example, the damper 537 may be formed of stainless steel or copper (Cu), but embodiments of the present disclosure are not limited thereto.
The vibration device 500 according to some embodiments of the present disclosure may further include a bobbin protection member 538.
The bobbin protection member 538 may be disposed at a front surface (or a front end portion) of the bobbin 534 and may transfer a rising and lowering motion (or vibration) of the bobbin 534 to the rear surface of the display device 100. The bobbin protection member 538 according to some embodiments of the present disclosure may have a ring shape disposed on the front surface of the bobbin 534, a disc shape covering the whole front surface of the bobbin 534, or a cap shape surrounding the front surface and the upper outer surface of the bobbin 534, but the shapes are not limited thereto. For example, the bobbin protection member 538 may be referred to as a bobbin ring, but embodiments of the present disclosure are not limited thereto.
The vibration generating device 501 according to an embodiment of the present disclosure may further include a connection member 550.
The connection member 550 may be disposed between the structure 510 and the display device 100. The connection member 550 according to some embodiments of the present disclosure may be disposed between a front edge portion (or a front periphery portion) of the structure 510 and a rear edge portion (or a rear periphery portion) of the display device 100. For example, the connection member 550 may be a double-sided tape or a double-sided foam tape, but embodiments of the present disclosure are not limited thereto. The connection member 550 may provide a vibration space, surrounding the vibration device 500, between the structure 510 and the display device 100. The vibration space may be referred to as a sound pressure level space, a sound space, a sound box, a sound part, a resonance box, or a resonance part, but embodiments of the present disclosure are not limited thereto.
The vibration generating device 501 according to an embodiment of the present disclosure may further include a vibration transfer member 570.
The vibration transfer member 570 may be connected or coupled to each of the connection member 550 and the vibration device 500 and may vibrate based on a vibration of the vibration device 500 to transfer the vibration of the vibration device 500 to the display device 100.
According to some embodiments of the present disclosure, a rear edge portion or rear periphery portion of the vibration transfer member 570 may be connected or coupled to the connection member 550, and a rear center portion of the vibration transfer member 570 may be coupled to a front surface of the bobbin 534 of the vibration device 500, or may be coupled or connected to the bobbin protection member 538 of the vibration device 500.
The vibration transfer member 570 according to some embodiments of the present disclosure may be formed of one or more materials among aluminum (Al), a magnesium (Mg), a Mg alloy, a Mg-lithium (Li) alloy, and an Al alloy, but embodiments of the present disclosure are not limited thereto. For example, the Mg alloy may include one or more materials of aluminum (Al), zinc (Zn), and manganese (Mn). The Mg alloy may be a lightest material of metal materials usable as a vibration plate of a speaker, may have relatively high non-rigidity (stiffness/specific gravity) and relatively high vibration damping ability (ability to absorb and progressively reduce vibration), and may be good in dimension stability with respect to a variation of a temperature and the elapse of time.
According to some embodiments of the present disclosure, a second member 430 (or a module adhesive member) may be disposed between the vibration transfer member 570 and the display device 100. For example, the front surface of the vibration transfer member 570 may be coupled or connected to the rear surface of the display device 100 by the second member 430.
The second member 430 may be a double-sided adhesive member between the display device 100 and the vibration transfer member 570. The double-sided adhesive member may be a double-sided tape or a double-sided foam tape, but embodiments of the present disclosure are not limited thereto. One surface (or a front surface) of the second member 430 may be disposed on or coupled to the rear surface of the display device 100, and the other surface (or a rear surface) of the second member 430 may be disposed on or coupled to the front surface of the vibration transfer member 570. For example, the one surface of the second member 430 may be disposed at or fixed to the rear surface of the display device 100 in a state where an upper protection sheet is delaminated.
According to some embodiments of the present disclosure, the second member 430 may be coupled (or modularized) to an uppermost surface of the vibration generating device 501 modularized as one element, for convenience of assembly between the vibration generating device 501 and the display device 100, and may be protected by the upper protection sheet. For example, the upper protection sheet may be referred to as an upper delamination sheet or a top liner (or an upper liner), but embodiments of the present disclosure are not limited thereto.
For example, all of the vibration transfer member 570 and the second member 430 may be omitted. For example, the vibration generating device 501 may include the upper protection sheet coupled or connected to each of the connection member 550 and the vibration device 500. The upper protection sheet may be coupled or connected to each of the connection member 550 and the vibration device 500 to cover the whole front surface of the vibration generating device 501, and thus, in a transfer process after a modularization process performed on the vibration generating device 501 modularized as one element, each of the vibration device 500 and the connection member 550 of the vibration generating device 501 may be prevented from being externally exposed and penetration of particles such as dust into the vibration generating device 501 may be prevented. The upper protection sheet may be delaminated from the vibration generating device 501 immediately before an assembly process between the vibration generating device 501 and the display device 100.
Therefore, the vibration generating device 501 according to an embodiment of the present disclosure may be disposed between the display device 100 and the supporting member 300 in a state where the structure 510 and the vibration device 500 are modularized as one element, and thus, by the display device 100 as a vibration plate, a sound PVS based on a vibration of the display panel 110 may be output and an outermost rear surface of the display apparatus may not expose the vibration device 501, thereby improving a rear appearance design of the display apparatus.
With reference to
With reference to
With reference to
With reference to
With reference to
The one or more vibration device 500 may realize a 2-channel sound including a left sound and a right sound, and thus, the inventors have recognized that it is difficult to reproduce or generate a sound at an upper portion and a lower portion. For example, a multi-channel sound may be reproduced by a sound bar, but an upper channel may be an indirect sound which is generated by reproducing a sound through reflection by a ceiling, and thus, the inventors have recognized that there is a problem where it is difficult to reproduce a desired sound due to a position difference between a displayed screen and a sound image. Therefore, the inventors have performed various experiments for reproducing a real sound instead of an indirect sound. Through the various experiments, the inventors have invented a display apparatus having a new structure for realizing a real sound and a multi-channel sound. This will be described below.
With reference to
At least one or more vibration devices may be disposed at at least one or more among the first to sixth regions (1) to (6). In the following embodiments, an example where a vibration device is disposed at a rear surface of the display device 100 (for example, a rear surface of the display panel 110) will be described, but embodiments of the present disclosure are not limited thereto. For example, the vibration device may be disposed between the display panel 110 and a supporting member 300. For example, the vibration device may be disposed between a rear surface of the display panel 110 and an upper surface of the supporting member 300. As another embodiment of the present disclosure, as illustrated in
According to some embodiments of the present disclosure, the display apparatus may further include a partition. For example, the partition may be disposed between the display panel 110 and the supporting member 300. The partition may be an air gap or a space where a sound is generated when the display panel 110 is vibrated by the vibration device. An air gap or a space which generates or outputs a sound may be referred to as a partition. The partition may separate a sound or may separate a channel, thereby preventing or decreasing the occurrence of a nontransparent sound caused by interference of a sound. The partition may be referred to as an enclosure or a baffle, but embodiments of the present disclosure are not limited thereto. In the following embodiments, an example where a partition is disposed at a supporting member will be described. However, embodiments of the present disclosure are not limited thereto, and the partition may be disposed at a rear surface of a display panel. To illustrate the vibration device and the partition, an example where the vibration device and the partition are disposed at the supporting member will be described. For example, when the partition is disposed at the supporting member, an adverse influence of image quality of the display panel caused by the partition disposed at the display panel may be reduced.
With reference to
The first vibration device 500HL and the second vibration device 500HR may be further configured for implementing a multi-channel sound, and a partition should be configured for separating channels or sounds, generated by the first and second vibration devices 500HL and 500HR, from channels or sounds generated by the third and fourth vibration devices W1 and W2. When the first to fourth partitions 1711 to 1722 are disposed, left and right sounds or left and right channels may be separated from one another. A partition for generating a sound in each vibration device should be configured so that an upper portion sound or an upper channel are separated from a lower portion sound or a lower channel and vibration devices disposed at regions of the rear surface of the display panel 110 implement independent sounds for each region.
A partition may be configured to separate an upper channel or a height channel of the display panel 110 from a center channel of the display panel 110. For example, a fifth partition 1731 may separate the upper channel or a height channel of the display panel 110 from the center channel of the display panel 110. For example, the fifth partition 1731 may separate channels or sounds, generated by a first vibration device 500HL and a second vibration device 500HR disposed at an upper portion of the display panel 110, from channels or sounds generated by a third vibration device W1, a fourth vibration device W2, and a fifth vibration device 500C disposed at a lower portion of the display panel 110. A sixth partition 1732 may be disposed at a lower portion of the display panel 110 and may be separated from a driver for driving the display panel 110. For example, the sixth partition 1732 may be disposed at lower portions of the third vibration device W1, the fourth vibration device W2, and the fifth vibration device 500C. For example, the sixth partition 1732 may separate the third vibration device W1, the fourth vibration device W2, and the fifth vibration device 500C from the driver for driving the display panel 110. The fifth partition 1731 may be disposed between the first to third regions (1) to (3) and the fourth to sixth regions (4) to (6). The sixth partition 1732 may be disposed at a lower portion of the fourth to sixth regions (4) to (6).
The first to sixth partitions 1711 to 1732 may be disposed at the supporting member 300. For example, the first to sixth partitions 1711 to 1732 may be disposed at an upper surface of the supporting member 300. For example, the first to sixth partitions 1711 to 1732 may be disposed between the display panel 110 and the supporting member 300. For example, the first to sixth partitions 1711 to 1732 may be disposed between the rear surface of the display panel 110 and the upper surface of the supporting member 300.
With reference to
Therefore, because the display apparatus according to an embodiment of the present disclosure further include the seventh partition 1750, a peak or dip phenomenon may be reduced, and the flatness of a sound characteristic may be improved. For example, the peak phenomenon may be a phenomenon where a sound pressure level bounces in a specific frequency, and the dip phenomenon may be a phenomenon where a low sound pressure level is generated because a specific frequency is not generated. For example, the flatness of the sound characteristic may be a magnitude of a deviation between a highest sound pressure level and a lowest sound pressure level.
The first to seventh partitions 1711 to 1750 may include one or more among a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, a single-sided tape, a single-sided foam tape, a single-sided pad, a single-sided foam pad, an adhesive, and a bond, but embodiments of the present disclosure are not limited thereto. When the first to seventh partitions 1711 to 1750 is configured with a double-sided tape or a double-sided foam pad, an adhesive force may be enhanced in a process of attaching the rear surface of the display panel 110 on the upper surface of the supporting member 300. For example, at least one or more of the first to seventh partitions 1711 to 1750 may include a material having elasticity which enables a certain degree of compression. For example, the first to seventh partitions 1711 to 1750 may include polyurethane, polyolefin, or polyethylene, but embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, at least one first vibration device 500HL may be disposed at a first region (1) of a rear surface of a display panel. At least one second vibration device 500HR may be disposed at a second region (2) of the rear surface of the display panel. For example, the first vibration device 500HL may be an upper left channel or a height left channel. For example, the second vibration device 500HR may be an upper right channel or a height right channel.
According to some embodiments of the present disclosure, at least one third vibration device W1 may be disposed at a fourth region (4) of the rear surface of the display panel. At least one fourth vibration device W2 may be disposed at a fifth region (5) of the rear surface of the display panel. At least one fifth vibration device 500C may be disposed at a sixth region (6) of the rear surface of the display panel. For example, the third vibration device W1 may be a left channel, the fourth vibration device W2 may be a right channel, and the fifth vibration device 500C may be a center channel.
For example, the first and second vibration devices 500HL and 500HR may be an upper channel or a height channel. The third to fifth vibration devices W1, W2, and 500HC may be a main channel. For example, the first and second vibration devices 500HL and 500HR may be a vibration device which outputs a full-range sound. The third to fifth vibration devices W1, W2, and 500HC may be a vibration device which outputs a full-range sound. For example, a sound band of a full range may be about 300 Hz or more, but embodiments of the present disclosure are not limited thereto. For example, when the third vibration device W1 and the fourth vibration device W2 are provided, a left sound and a right sound may be reproduced. Moreover, in the display apparatus according to an embodiment of the present disclosure, because the first vibration device 500HL and the second vibration device 500HR are further provided, an upper channel (or a height channel or an upper sound) may be reproduced, thereby realizing a real sound for the upper channel. For example, in the display apparatus according to an embodiment of the present disclosure, because the first vibration device 500HL and the second vibration device 500HR are further provided, there may not be a position difference between a screen and a sound image, and thus, a sound image based on the screen may be implemented, thereby realizing a real sound based on a position. Also, because the fifth vibration device 500C configures a center channel in addition to a left sound and a right sound, a display apparatus for outputting a multi-channel sound may be implemented.
According to some embodiments of the present disclosure, a vibration device may be not configured at third region (3). Therefore, vibrations of the first vibration device 500HL and the second vibration device 500HR may be attenuated and absorbed in the third region (3) of the display panel 110, and thus, the transfer of a sound from the first region (1) to the second region (2) may be blocked or reduced and the transfer of a sound from the second region (2) to the first region (1) may be blocked or reduced. Accordingly, a degradation in sound quality caused by interference of sounds generated in the first region (1) and the second region (2) may be reduced, and a sound characteristic of a middle-high-pitched sound band may be more enhanced. For example, the middle-pitched sound band may be about 200 Hz to about 3 kHz, the high-pitched sound band may be 3 kHz or more, and the low-pitched sound band may be 200 Hz or less. However, a range of a sound band is not limited thereto.
Therefore, the display apparatus according to an embodiment of the present disclosure may include five vibration devices and may be configured with a plurality of vibration devices including an upper channel or a height channel and a main channel, thereby providing five channels. Also, the five vibration devices may be independently supplied with and driven by a sound signal, and thus, each of the five vibration devices may reproduce an independent sound channel.
For example, because the third vibration device W1 and the fourth vibration device W2 is configured as a woofer-integrated vibration device, a 3.1.2-channel or a 3.2.2-channel may be implemented. Also, because the third vibration device W1 and the fourth vibration device W2 are configured as a woofer-integrated vibration device, it is not needed to separately provide a woofer for reproducing a sound of the low-pitched sound band. The woofer-integrated vibration device will be described below with reference to
According to some embodiments of the present disclosure, the third vibration device W1 and the fourth vibration device W2 may be configured as the same vibration device, for the left-right symmetricity of a sound. For example, one or more of the first vibration device 500HL and the second vibration device 500HR may be configured as a vibration device which differs from one or more of the third vibration device W1 and the fourth vibration device W2. For example, the first vibration device 500HL and the second vibration device 500HR may be configured as a coil type vibration device. The coil type vibration device may be the vibration device described above with reference to
The inventors have recognized that it is difficult to output a sound of a low-pitched sound band despite a case where a partition is configured to separate a channel or a sound of the upper portion and a channel or a sound of the lower portion. Therefore, the inventors have performed various experiments for implementing a sound of the low-pitched sound band, and have implemented a multi-channel sound including the low-pitched sound band based on the various experiments.
With reference to
According to some embodiments of the present disclosure, a size of a partition near the first vibration device 500HL may be configured to differ from a partition near the third vibration device W1. For example, a partition at one or more sides of the first vibration device 500HL may include the first partition 1711 and the fifth partition 1731. For example, a partition at one or more sides of the third vibration device W1 may include the third partition 1721 and the sixth partition 1732. For example, a size of the first partition 1711 at one or more sides of the first vibration device 500HL may differ from the third partition 1721 at one or more sides of the third vibration device W1. For example, a size of the first partition 1711 at the one or more sides of the first vibration device 500HL may be smaller than the third partition 1721 at the one or more sides of the third vibration device W1. For example, a size of the fifth partition 1731 at one or more sides of the first vibration device 500HL may differ from the sixth partition 1732 at one or more sides of the third vibration device W1. For example, a size of the fifth partition 1731 at the one or more sides of the first vibration device 500HL may be smaller than the sixth partition 1732 at the one or more sides of the third vibration device W1. A partition at one or more sides of the first vibration device 500HL may include a 1-1st length a1 of the first partition 1711 and a 1-2nd length b1 of the fifth partition 1731. For example, the 1-1st length a1 may be 250 mm or more and the 1-2th length b1 may be 250 mm or more, but the embodiments of the present disclosure are not limited thereto. A partition at one or more sides of the third vibration device W1 may include a 2-1st length a4 of the third partition 1721 and a 2-2nd length b4 of the sixth partition 1732. For example, the 2-1st length a4 may be 300 mm or more and the 2-2nd length b4 may be 300 mm or more, but the embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, a size of a partition near the second vibration device 500HR may be configured to differ from a partition near the third vibration device W1. For example, a partition at one or more sides of the second vibration device 500HR may include the second partition 1712 and the fifth partition 1731. For example, a partition at one or more sides of the forth vibration device W2 may include the fourth partition 1722 and the sixth partition 1732. For example, a size of the second partition 1712 at one or more sides of the second vibration device 500HR may differ from the fourth partition 1722 at one or more sides of the fourth vibration device W2. For example, a size of the second partition 1712 at one or more sides of the second vibration device 500HR may be smaller than the fourth partition 1722 at one or more sides of the fourth vibration device W2. For example, a size of the fifth partition 1731 at one or more sides of the second vibration device 500HR may differ from the sixth partition 1732 at one or more sides of the fourth vibration device W2. For example, a size of the fifth partition 1731 at one or more sides of the second vibration device 500HR may be smaller than the sixth partition 1732 at one or more sides of the fourth vibration device W2. A partition at one or more sides of the second vibration device 500HR may include a 1-1st length a1 of the second partition 1712 and a 1-2nd length b1 of the fifth partition 1731, like the partition at the one or more sides of the first vibration device 500HL. For example, the 1-1st length a1 may be 250 mm or more and the 1-2nd length b1 may be 250 mm or more, but the embodiments of the present disclosure are not limited thereto. A partition at one or more sides of the fourth vibration device W2 may include a 2-1st length a4 of the fourth partition 1722 and a 2-2nd length b4 of the sixth partition 1732, like the partition at the one or more sides of the third vibration device W1. For example, the 2-1st length a4 may be 300 mm or more and the 2-2nd length b4 may be 300 mm or more, but the embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, a size of the first partition 1711 near the first vibration device 500HL may be the same as the second partition 1712 near the second vibration device 500HR. For example, a size of one or more among the first partition 1711 and the fifth partition 1731 at one or more sides of the first vibration device 500HL may be the same as one or more among the second partition 1712 and the fifth partition 1731 at one or more sides of the second vibration device 500HR. For example, a partition at one or more sides of the second vibration device 500HR may include the second partition 1712 and the fifth partition 1731. For example, a size of the first partition 1711 at one or more sides of the first vibration device 500HL may be the same as the second partition 1712 at one or more sides of the second vibration device 500HR. For example, a size of the fifth partition 1731 at one or more sides of the first vibration device 500HL may be the same as the fifth partition 1731 at one or more sides of the second vibration device 500HR. A partition at one or more sides of the second vibration device 500HR may include a 1-1st length a1 and a 1-2nd length b1, like the partition at the one or more sides of the first vibration device 500HL. For example, a partition at one or more sides of the second vibration device 500HR may include a 1-1st length a1 of the second partition 1712 and a 1-2nd length b1 of the fifth partition 1731. For example, the 1-1st length a1 may be 250 mm or more and the 1-2nd length b1 may be 250 mm or more, but the embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, a size of the third partition 1721 near of the third vibration device W1 may be the same as the fourth partition 1722 near the fourth vibration device W2. For example, a partition at one or more sides of the fourth vibration device W2 may include the fourth partition 1722 and the sixth partition 1732. For example, a size of one or more among the third partition 1721 and the sixth partition 1732 near the third vibration device W1 may be the same as one or more among the fourth partition 1722 and the sixth partition 1732 near the fourth vibration device W2. For example, a size of the third partition 1721 at one or more sides of the third vibration device W1 may be the same as the fourth partition 1722 at one or more sides of the fourth vibration device W2. For example, a size of the sixth partition 1732 at one or more sides of the third vibration device W1 may be the same as the sixth partition 1732 at one or more sides of the fourth vibration device W2. A partition at one or more sides of the fourth vibration device W2 may include a 2-1st length a4 and a 2-2nd length b4, like the partition at the one or more sides of the third vibration device W1. For example, a partition at one or more sides of the fourth vibration device W2 may include a 2-1st length a4 of the fourth partition 1722 and a 2-2nd length b4 of the sixth partition 1732. For example, the 2-1st length a4 may be 300 mm or more and the 2-2nd length b4 may be 300 mm or more, but the embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, a size of a partition near the fifth vibration device 500C may be the same as one or more among partitions near the third vibration device W1 and the fourth vibration device W2. For example, a partition at one or more sides of the fifth vibration device 500C may include the fifth partition 1731 and the sixth partition 1732. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may be the same as the fifth partition 1731 at one or more sides of the third vibration device W1. For example, a size of the sixth partition 1732 at one or more sides of the fifth vibration device 500C may be the same as the sixth partition 1732 at the one or more sides of the third vibration device W1. For example, a size of the fifth partition 1731 at the one or more sides of the fifth vibration device 500C may be the same as the fifth partition 1731 at one or more sides of the fourth vibration device W2. For example, a size of the sixth partition 1732 at one or more sides of the fifth vibration device 500C may be the same as the sixth partition 1732 at the one or more sides of the fourth vibration device W2. A partition at one or more sides of the fifth vibration device 500C may include a 2-1st length a4 and a 2-2nd length b4, like the partition at the one or more sides of the third vibration device W1. For example, the 2-1st length a4 may be 300 mm or more and the 2-2nd length b4 may be 300 mm or more, but the embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, the display apparatus may include the first partition 1711 at one or more sides of the first vibration device 500HL, the second partition 1712 at one or more sides of the second vibration device 500HR, the third partition 1721 at one or more sides of the third vibration device W1, and the fourth partition 1722 at one or more sides of the fourth vibration device W4. For example, a size of one or more among the first partition 1711 and the second partition 1712 may differ from one or more among the third partition 1721 and the fourth partition 1722. For example, a size of one or more among the first partition 1711 and the second partition 1712 may be smaller than one or more among the third partition 1721 and the fourth partition 1722. For example, a size of the first partition 1711 at one or more sides of the first vibration device 500HL may differ from the third partition 1721 at one or more sides of the third vibration device W1. For example, a size of the first partition 1711 at the one or more sides of the first vibration device 500HL may be smaller than the third partition 1721 at the one or more sides of the third vibration device W1. For example, a size of the second partition 1712 at one or more sides of the second vibration device 500HR may differ from the fourth partition 1722 at one or more sides of the fourth vibration device W2. For example, a size of the second partition 1712 at the one or more sides of the second vibration device 500HR may be smaller than the fourth partition 1722 at the one or more sides of the fourth vibration device W2.
According to some embodiments of the present disclosure, a size of the first partition 1711 may be the same as the second partition 1712. For example, a size of the first partition 1711 at one or more sides of the first vibration device 500HL may be the same as the second partition 1712 at one or more sides of the second vibration device 500HR. A size of the third partition 1721 may be the same as the fourth partition 1722. For example, a size of the third partition 1721 at one or more sides of the third vibration device W1 may be the same as the fourth partition 1722 at one or more sides of the fourth vibration device W2.
According to some embodiments of the present disclosure, the display apparatus may further include the fifth partition 1731 at one or more sides of the first vibration device 500HL and the second vibration device 500HR, and the sixth partition 1732 at one or more sides of the third vibration device W1 and the fourth vibration device W2. A size of the fifth partition 1731 may differ from the sixth partition 1732. For example, a size of the fifth partition 1731 may be smaller than the sixth partition 1732. A size of the fifth partition 1731 at one or more sides of the first vibration device 500HL may differ from the sixth partition 1732 at one or more sides of the third vibration device W1. For example, a size of the fifth partition 1731 at the one or more sides of the first vibration device 500HL may be smaller than the sixth partition 1732 at the one or more sides of the third vibration device W1. A size of the fifth partition 1731 at one or more sides of the second vibration device 500HR may differ from the sixth partition 1732 at the one or more sides of the third vibration device W1. A size of the fifth partition 1731 at the one or more sides of the second vibration device 500HR may be smaller than the sixth partition 1732 at the one or more sides of the third vibration device W1. A size of the fifth partition 1731 at the one or more sides of the first vibration device 500HL may differ from the sixth partition 1732 at one or more sides of the fourth vibration device W2. For example, a size of the fifth partition 1731 at the one or more sides of the first vibration device 500HL may be smaller than the sixth partition 1732 at the one or more sides of the fourth vibration device W2. A size of the fifth partition 1731 at the one or more sides of the second vibration device 500HR may differ from the sixth partition 1732 at one or more sides of the fourth vibration device W2. A size of the fifth partition 1731 at the one or more sides of the second vibration device 500HR may be smaller than the sixth partition 1732 at the one or more sides of the fourth vibration device W2.
According to some embodiments of the present disclosure, a size of one or more among the third partition 1721 and the fourth partition 1722 may be the same as one or more among the fifth partition 1731 and the sixth partition 1732. For example, a size of the third partition 1721 at one or more sides of the third vibration device W1 may be the same as the fifth partition 1731 at one or more sides of the third vibration device W1. For example, a size of the third partition 1721 at the one or more sides of the third vibration device W1 may be the same as the sixth partition 1732 at one or more sides of the third vibration device W1. For example, a size of the fourth partition 1722 at the one or more sides of the fourth vibration device W2 may be the same as the fifth partition 1731 at one or more sides of the fourth vibration device W2. For example, a size of the fourth partition 1722 at the one or more sides of the fourth vibration device W2 may be the same as the sixth partition 1732 at one or more sides of the fourth vibration device W2.
According to some embodiments of the present disclosure, the display apparatus may further include the fifth partition 1731 and the sixth partition 1732 at one or more sides of the fifth vibration device 500C. A size of one or more among the fifth partition 1731 and the sixth partition 1732 may differ from one or more of the first partition 1711 and the second partition 1712. For example, a size of one or more among the fifth partition 1731 and the sixth partition 1732 may be greater than one or more of the first partition 1711 and the second partition 1712. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may differ from the first partition 1711 at one or more sides of the first vibration device 500HL. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may be greater than the first partition 1711 at one or more sides of the first vibration device 500HL. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may differ from the fifth partition 1731 at one or more sides of the first vibration device 500HL. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may be greater than the fifth partition 1731 at one or more sides of the first vibration device 500HL. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may differ from the second partition 1712 at one or more sides of the second vibration device 500HR. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may be greater than the second partition 1712 at one or more sides of the second vibration device 500HR. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may differ from the fifth partition 1731 at one or more sides of the second vibration device 500HR. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may be greater than the fifth partition 1731 at one or more sides of the second vibration device 500HR.
According to some embodiments of the present disclosure, the display apparatus may further include the fifth partition 1731 and the sixth partition 1732 at one or more sides of the fifth vibration device 500C. A size of one or more among the fifth partition 1731 and the sixth partition 1732 may be the same as one or more among the fifth partition 1731 and the sixth partition 1732 near the third vibration device W1 and the fourth vibration device W2. For example, the fifth partition 1731 at one or more sides of the fifth vibration device 500C may be the same as the fifth partition 1731 at one or more sides of the third vibration device W1. For example, the sixth partition 1732 at one or more sides of the fifth vibration device 500C may be the same as the sixth partition 1732 at one or more sides of the third vibration device W1. For example, the fifth partition 1731 at the one or more sides of the fifth vibration device 500C may be the same as the fifth partition 1731 at one or more sides of the fourth vibration device W2. For example, the sixth partition 1732 at the one or more sides of the fifth vibration device 500C may be the same as the sixth partition 1732 at one or more sides of the fourth vibration device W2.
With reference to
Therefore, according to an embodiment of the present disclosure, sizes of partitions near a vibration device may be configured differently, thereby providing a display apparatus including a vibration device for outputting a sound band of 180 Hz or more and/or a sound band of a full range. Also, according to an embodiment of the present disclosure, a display apparatus where Dolby Atmos 3.1.2-channel is provided at a display apparatus may be implemented. According to an embodiment of the present disclosure, a vibration device including a 3.1.2-channel or a 3.1.2-channel for realizing a sound based on upward, downward, left, and right actions or motions in addition to a sound based on simple left and right actions or motions may be implemented. For example, a stereo sound and a vivid sound may be provided at upward, downward, left, and right sides or portions based on a position of an object or a person in a displayed screen. According to an embodiment of the present disclosure, comparing with a sound bar, the first vibration device 500HL and the second vibration device 500HR which are upper channels or height channels may generate a sound at a height position, thereby providing a vibration device for realizing a sound without needing a separate algorithm.
With reference to
According to some embodiments of the present disclosure, at least one first vibration device 500HL may be disposed at a first region (1) of a rear surface of the display panel 110, and at least one second vibration device 500HR may be disposed at a second region (2) of the rear surface of the display panel 110. For example, the first vibration device 500HL may be an upper left channel or a height left channel. For example, the second vibration device 500HR may be an upper right channel or a height right channel.
At least one third vibration device 500L may be disposed at a fourth region (4) of the rear surface of the display panel 110, and at least one fourth vibration device 500R may be disposed at a fifth region (5) of the rear surface of the display panel 110. At least one fifth vibration device 500C may be disposed at a sixth region (6) of the rear surface of the display panel 110. For example, the third vibration device 500L may be a left channel, the fourth vibration device 500R may be a right channel, and the fifth vibration device 500C may be a center channel.
For example, the first vibration device 500HL and the second vibration device 500HR may be an upper channel or a height channel, and the third vibration device 500L, the fourth vibration device 500R, and the fifth vibration device 500C may be a main channel. The first vibration device 500HL and the second vibration device 500HR may be a vibration device which outputs a sound of a full range. The third vibration device 500L, the fourth vibration device 500R, and the fifth vibration device 500C may be a vibration device which outputs a sound of a full range. For example, a sound band of a full range may be about 300 Hz or more, but embodiments of the present disclosure are not limited thereto. For example, in a case where the third vibration device 500L and the fourth vibration device 500R are provided, a left sound and a right sound may be reproduced. Moreover, in the display apparatus according to an embodiment of the present disclosure, because the first vibration device 500HL and the second vibration device 500HR are further provided, the upper channel or a height channel may be reproduced, thereby realizing a real sound for the upper channel. For example, in the display apparatus according to an embodiment of the present disclosure, because the first vibration device 500HL and the second vibration device 500HR are further provided, there may not be a position difference between a screen and a sound image, and thus, a sound image based on the screen may be implemented, thereby realizing a real sound based on a position. Also, because the fifth vibration device 500C configures a center channel in addition to a left sound and a right sound, a display apparatus for outputting a multi-channel sound may be implemented.
According to some embodiments of the present disclosure, the third region (3) may not configure a vibration device. Therefore, vibrations of the first vibration device 500HL and the second vibration device 500HR may be attenuated and absorbed in the third region (3) of the display panel 110, and thus, the transfer of a sound from the first region (1) to the second region (2) may be blocked or reduced and the transfer of a sound from the second region (2) to the first region (1) may be blocked or reduced. Accordingly, a degradation in sound quality caused by interference of sounds generated in the first region (1) and the second region (2) may be reduced, and a sound characteristic of a middle-pitched sound band and a high-pitched sound band may be more enhanced.
Therefore, the display apparatus according to an embodiment of the present disclosure may include five vibration devices and may be configured with a plurality of vibration devices including an upper channel or a height channel and a main channel, thereby providing a display apparatus including five channels. Also, the five vibration devices may be independently supplied with and driven by a sound signal, and thus, each of the five vibration devices may reproduce an independent sound channel.
According to some embodiments of the present disclosure, the third vibration device 500L and the fourth vibration device 500R may be configured as the same vibration device, for the left-right symmetricity of a sound. For example, the third vibration device 500L and the fourth vibration device 500R may be configured as a coil type vibration device. The coil type vibration device may be the vibration device described above with reference to
With reference to
Therefore, according to an embodiment of the present disclosure, sizes of partitions near a vibration device may be configured to differently, thereby providing a display apparatus including a vibration device for outputting a sound band of 180 Hz or more and/or a sound band of a full range.
With reference to
According to some embodiments of the present disclosure, at least one first vibration device 600HL may be disposed at a first region (1) of a rear surface of the display panel 110, and at least one second vibration device 600HR may be disposed at a second region (2) of the rear surface of the display panel 110. For example, each of the first vibration device 600HL and the second vibration device 600HR may have a square or rectangular shape. For example, the first vibration device 600HL may be an upper left channel or a height left channel. For example, the second vibration device 600HR may be an upper right channel or a height right channel.
At least one third vibration device W1 may be disposed at a fourth region (4) of the rear surface of the display panel 110, and at least one fourth vibration device W2 may be disposed at a fifth region (5) of the rear surface of the display panel 110. At least one fifth vibration device 500C may be disposed at a sixth region (6) of the rear surface of the display panel 110. For example, the third vibration device W1 may be a left channel, the fourth vibration device W2 may be a right channel, and the fifth vibration device 500C may be a center channel.
For example, the first vibration device 600HL and the second vibration device 600HR may be an upper channel or height channel, and the third vibration device W1, the fourth vibration device W2, and the fifth vibration device 500C may be a main channel. The first vibration device 600HL and the second vibration device 600HR may be a vibration device which outputs a sound of a full range. The third vibration device W1, the fourth vibration device W2, and the fifth vibration device 500C may be a vibration device which outputs a sound of a full range. For example, a sound band of a full range may be about 300 Hz or more, but embodiments of the present disclosure are not limited thereto. For example, in a case where the third vibration device W1 and the fourth vibration device W2 are provided, a left sound and a right sound may be reproduced. Moreover, in the display apparatus according to an embodiment of the present disclosure, because the first vibration device 600HL and the second vibration device 600HR are further provided, an upper channel or a height channel may be reproduced, thereby realizing a real sound for the upper channel. For example, in the display apparatus according to an embodiment of the present disclosure, because the first vibration device 600HL and the second vibration device 600HR are further provided, there may not be a position difference between a screen and a sound image, and thus, a sound image based on the screen may be implemented, thereby realizing a real sound based on a position. Also, because the fifth vibration device 500C configures a center channel in addition to a left sound and a right sound, a display apparatus for outputting a multi-channel sound may be implemented.
According to some embodiments of the present disclosure, the third region (3) may not configure a vibration device. Therefore, vibrations of the first vibration device 600HL and the second vibration device 600HR may be attenuated and absorbed in the third region (3) of the display panel 110, and thus, the transfer of a sound from the first region (1) to the second region (2) may be blocked or reduced and the transfer of a sound from the second region (2) to the first region (1) may be blocked or reduced. Accordingly, a degradation in sound quality caused by interference of sounds generated in the first region (1) and the second region (2) may be reduced, and a sound characteristic of a middle-pitched sound band and a high-pitched sound band may be more enhanced.
Therefore, the display apparatus according to an embodiment of the present disclosure may include five vibration devices and may be configured with a plurality of vibration devices including an upper channel or a height channel and a main channel, thereby providing a display apparatus including five channels. Also, the five vibration devices may be independently supplied with and driven by a sound signal, and thus, each of the five vibration devices may reproduce an independent sound channel.
For example, because the third vibration device W1 and the fourth vibration device W2 is configured as a woofer-integrated vibration device, a 3.1.2-channel or a 3.2.2-channel may be implemented. Also, because the third vibration device W1 and the fourth vibration device W2 are configured as a woofer-integrated vibration device, it is not needed to separately provide a woofer for reproducing a sound of the low-pitched sound band.
According to some embodiments of the present disclosure, the third vibration device W1 and the fourth vibration device W2 may be configured as the same vibration device, for the left-right symmetricity of a sound. One or more of the first vibration device 600HL and the second vibration device 600HR may be configured as a vibration device which differs from one or more of the third vibration device W1 and the fourth vibration device W2. For example, one or more of the first vibration device 600HL and the second vibration device 600HR may be configured as a film type vibration device. The film type vibration device will be described below with reference to
With reference to
According to some embodiments of the present disclosure, a size of a partition near the first vibration device 600HL may be configured to differ from a partition near the third vibration device W1. For example, a partition at one or more sides of the first vibration device 600HL may include the first partition 1711 and the fifth partition 1731. For example, a partition at one or more sides of the third vibration device W1 may include the third partition 1721 and the sixth partition 1732. For example, a size of the first partition 1711 at one or more sides of the first vibration device 600HL may differ from the third partition 1721 at one or more sides of the third vibration device W1. For example, a size of the first partition 1711 at the one or more sides of the first vibration device 600HL may be greater than the third partition 1721 at the one or more sides of the third vibration device W1. For example, a size of the fifth partition 1731 at one or more sides of the first vibration device 600HL may differ from the sixth partition 1732 at one or more sides of the third vibration device W1. For example, a size of the fifth partition 1731 at the one or more sides of the first vibration device 600HL may be greater than the sixth partition 1732 at the one or more sides of the third vibration device W1. A partition at one or more sides of the first vibration device 600HL may include a 1-1st length a1 of the first partition 1711 and a 1-2nd length b1 of the fifth partition 1731. For example, the 1-1st length a1 may be 400 mm or more, and the 1-2nd length b1 may be 400 mm or more, but embodiments of the present disclosure are not limited thereto. A partition at one or more sides of the third vibration device W1 may include a 2-1st length a4 of the third partition 1721 and a 2-2nd length b4 of the sixth partition 1732. For example, the 2-1st length a4 may be 300 mm or more and the 2-2nd length b4 may be 300 mm or more, but the embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, a size of a partition near the second vibration device 600HR may be configured to differ from a partition near the fourth vibration device W2. For example, a partition at one or more sides of the second vibration device 600HR may include the second partition 1712 and the fifth partition 1731. For example, a size of the second partition 1712 at one or more sides of the second vibration device 600HR may differ from the fourth partition 1722 at one or more sides of the fourth vibration device W2. For example, a size of the second partition 1712 at the one or more sides of the second vibration device 600HR may be greater than the fourth partition 1722 at the one or more sides of the fourth vibration device W2. For example, a size of the fifth partition 1731 at one or more sides of the second vibration device 600HR may differ from the sixth partition 1732 at one or more sides of the fourth vibration device W2. For example, a size of the fifth partition 1731 at the one or more sides of the second vibration device 600HR may be greater than the sixth partition 1732 at the one or more sides of the fourth vibration device W2. A partition at one or more sides of the second vibration device 600HR may include a 1-1st length a1 of the second partition 1712 and a 1-2nd length b1 of the fifth partition 1731, like the partition at the one or more sides of the first vibration device 600HL. For example, the 1-1st length a1 may be 400 mm or more, and the 1-2nd length b1 may be 400 mm or more, but the embodiments of the present disclosure are not limited thereto. A partition at one or more sides of the fourth vibration device W2 may include a 2-1st length a4 of the fourth partition 1722 and a 2-2nd length b4 of the sixth partition 1732. For example, the 2-1st length a4 may be 300 mm or more, and the 2-2nd length b4 may be 300 mm or more, but the embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, a size of the first partition 1711 near the first vibration device 600HL may be the same as the second partition 1712 near the second vibration device 600HR. For example, a size of one or more among the first partition 1711 and the fifth partition 1731 near the first vibration device 600HL may be the same as one or more among the second partition 1712 and the fifth partition 1731 near the second vibration device 600HR. For example, a partition at one or more sides of the second vibration device 600HR may include the second partition 1712 and the fifth partition 1731. For example, a size of the first partition 1711 at one or more sides of the first vibration device 600HL may be the same as the second partition 1712 at one or more sides of the second vibration device 600HR. For example, a size of the fifth partition 1731 at one or more sides of the first vibration device 600HL may be the same as the fifth partition 1731 at one or more sides of the second vibration device 600HR. A partition at one or more sides of the second vibration device 600HR may include a 1-1st length a1 and a 1-2nd length b1, like the partition at the one or more sides of the first vibration device 600HL. For example, a partition at one or more sides of the second vibration device 600HR may include a 1-1st length a1 of the second partition 1712 and a 1-2nd length b1 of the fifth partition 1731. For example, the 1-1st length a1 may be 400 mm or more and the 1-2nd length b1 may be 400 mm or more, but the embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, a size of the third partition 1721 near the third vibration device W1 may be the same as the fourth partition 1722 near the fourth vibration device W2. For example, a partition at one or more sides of the fourth vibration device W2 may include the fourth partition 1722 and the sixth partition 1732. For example, a size of one or more among the third partition 1721 and the sixth partition 1732 near the third vibration device W1 may be the same as one or more of the fourth partition 1722 and the sixth partition 1732 near the fourth vibration device W2. For example, a size of the third partition 1721 at one or more sides of the third vibration device W1 may be the same as the fourth partition 1722 at one or more sides of the fourth vibration device W2. For example, a size of the sixth partition 1732 at one or more sides of the third vibration device W1 may be the same as the sixth partition 1732 at one or more sides of the fourth vibration device W2. A partition at one or more sides of the fourth vibration device W2 may include a 2-1st length a4 and a 2-2nd length b4, like the partition at the one or more sides of the third vibration device W1. For example, a partition at one or more sides of the fourth vibration device W2 may include a 2-1st length a4 of the fourth partition 1722 and a 2-2nd length b4 of the sixth partition 1732. For example, the 2-1st length a4 may be 300 mm or more, and the 2-2nd length b4 may be 300 mm or more, but the embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, a size of a partition near the fifth vibration device 500C may be the same as one or more of partitions near the third vibration device W1 and the fourth vibration device W2. For example, a partition at one or more sides of the fifth vibration device 500C may include the fifth partition 1731 and the sixth partition 1732. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may be the same as the sixth partition 1732 at one or more sides of the third vibration device W1. For example, a size of the sixth partition 1732 at one or more sides of the fifth vibration device 500C may be the same as the sixth partition 1732 at the one or more sides of the third vibration device W1. For example, a size of the fifth partition 1731 at the one or more sides of the fifth vibration device 500C may be the same as the sixth partition 1732 at one or more sides of the fourth vibration device W2. For example, a size of the sixth partition 1732 at one or more sides of the fifth vibration device 500C may be the same as the sixth partition 1732 at the one or more sides of the fourth vibration device W2. A partition at one or more sides of the fifth vibration device 500C may include a 2-1st length a4 and a 2-2nd length b4, like the partition at the one or more sides of the third vibration device W1. For example, the 2-1st length a1 may be 300 mm or more, and the 2-2nd length b4 may be 300 mm or more, but the embodiments of the present disclosure are not limited thereto.
According to some embodiments of the present disclosure, the display apparatus may include the first partition 1711 at one or more sides of the first vibration device 600HL, the second partition 1712 at one or more sides of the second vibration device 600HR, the third partition 1721 at one or more sides of the third vibration device W1, and the fourth partition 1722 at one or more sides of the fourth vibration device W4. For example, a size of one or more among the first partition 1711 and the second partition 1712 may differ from one or more among the third partition 1721 and the fourth partition 1722. For example, a size of one or more among the first partition 1711 and the second partition 1712 may be greater than one or more among the third partition 1721 and the fourth partition 1722. For example, a size of the first partition 1711 at one or more sides of the first vibration device 600HL may differ from the third partition 1721 at one or more sides of the third vibration device W1. For example, a size of the first partition 1711 at the one or more sides of the first vibration device 600HL may be greater than the third partition 1721 at the one or more sides of the third vibration device W1. For example, a size of the second partition 1712 at one or more sides of the second vibration device 600HR may differ from the fourth partition 1722 at one or more sides of the fourth vibration device W2. For example, a size of the second partition 1712 at the one or more sides of the second vibration device 600HR may be greater than the fourth partition 1722 at the one or more sides of the fourth vibration device W2.
According to some embodiments of the present disclosure, a size of the first partition 1711 may be the same as the second partition 1712. For example, a size of the first partition 1711 at one or more sides of the first vibration device 600HL may be the same as the second partition 1712 at one or more sides of the second vibration device 600HR. A size of the third partition 1721 may be the same as the fourth partition 1722. For example, a size of the third partition 1721 at one or more sides of the third vibration device W1 may be the same as the fourth partition 1722 at one or more sides of the fourth vibration device W2.
According to some embodiments of the present disclosure, the display apparatus may further include the fifth partition 1731 at one or more sides of the first vibration device 600HL and the second vibration device 600HR, and the sixth partition 1732 at one or more sides of the third vibration device W1 and the fourth vibration device W2. A size of the fifth partition 1731 may differ from the sixth partition 1732. For example, a size of the fifth partition 1731 may be greater than the sixth partition 1732. A size of the fifth partition 1731 at one or more sides of the first vibration device 600HL may differ from the sixth partition 1732 at one or more sides of the third vibration device W1. For example, a size of the fifth partition 1731 at the one or more sides of the first vibration device 600HL may be greater than the sixth partition 1732 at the one or more sides of the third vibration device W1. A size of the fifth partition 1731 at one or more sides of the second vibration device 600HR may differ from the sixth partition 1732 at the one or more sides of the third vibration device W1. A size of the fifth partition 1731 at the one or more sides of the second vibration device 600HR may be greater than the sixth partition 1732 at the one or more sides of the third vibration device W1. A size of the fifth partition 1731 at the one or more sides of the first vibration device 600HL may differ from the sixth partition 1732 at one or more sides of the fourth vibration device W2. For example, a size of the fifth partition 1731 at the one or more sides of the first vibration device 600HL may be greater than the sixth partition 1732 at the one or more sides of the fourth vibration device W2. A size of the fifth partition 1731 at the one or more sides of the second vibration device 600HR may differ from the sixth partition 1732 at one or more sides of the fourth vibration device W2. A size of the fifth partition 1731 at the one or more sides of the second vibration device 600HR may be greater than the sixth partition 1732 at the one or more sides of the fourth vibration device W2.
According to some embodiments of the present disclosure, a size of one or more of the third partition 1721 and the fourth partition 1722 may be the same as one or more of the fifth partition 1731 and the sixth partition 1732. For example, a size of the third partition 1721 at one or more sides of the third vibration device W1 may be the same as the fifth partition 1731 at one or more sides of the third vibration device W1. For example, a size of the third partition 1721 at the one or more sides of the third vibration device W1 may be the same as the sixth partition 1732 at one or more sides of the third vibration device W1. For example, a size of the fourth partition 1722 at the one or more sides of the fourth vibration device W2 may be the same as the fifth partition 1731 at one or more sides of the fourth vibration device W2. For example, a size of the fourth partition 1722 at the one or more sides of the fourth vibration device W2 may be the same as the sixth partition 1732 at one or more sides of the fourth vibration device W2.
According to some embodiments of the present disclosure, the display apparatus may include the fifth partition 1731 and the sixth partition 1732 at one or more sides of the fifth vibration device 500C. A size of one or more among the fifth partition 1731 and the sixth partition 1732 may differ from one or more among the first partition 1711 and the second partition 1712. For example, a size of one or more among the fifth partition 1731 and the sixth partition 1732 may be smaller than one or more among the first partition 1711 and the second partition 1712. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may differ from the first partition 1711 at one or more sides of the first vibration device 600HL. For example, a size of the fifth partition 1731 at the one or more sides of the fifth vibration device 500C may be smaller than the first partition 1711 at the one or more sides of the first vibration device 600HL. For example, a size of the fifth partition 1731 at the one or more sides of the fifth vibration device 500C may differ from the fifth partition 1731 at one or more sides of the first vibration device 600HL. For example, a size of the fifth partition 1731 at the one or more sides of the fifth vibration device 500C may be smaller than the fifth partition 1731 at the one or more sides of the first vibration device 600HL. For example, a size of the fifth partition 1731 at the one or more sides of the fifth vibration device 500C may differ from the second partition 1712 at one or more sides of the second vibration device 600HR. For example, a size of the fifth partition 1731 at the one or more sides of the fifth vibration device 500C may be smaller than the second partition 1712 at the one or more sides of the second vibration device 600HR. For example, a size of the fifth partition 1731 at the one or more sides of the fifth vibration device 500C may differ from the fifth partition 1731 at one or more sides of the second vibration device 600HR. For example, a size of the fifth partition 1731 at the one or more sides of the fifth vibration device 500C may be smaller than the fifth partition 1731 at the one or more sides of the second vibration device 600HR.
According to some embodiments of the present disclosure, the display apparatus may include the fifth partition 1731 and the sixth partition 1732 at one or more sides of the fifth vibration device 500C. A size of one or more among the fifth partition 1731 and the sixth partition 1732 may be the same as one or more among the fifth partition 1731 and the sixth partition 1732 at one or more sides of the third vibration device W1 and the fourth vibration device W2. For example, a size of the fifth partition 1731 at one or more sides of the fifth vibration device 500C may be the same as the fifth partition 1731 at one or more sides of the third vibration device W1. For example, a size of the sixth partition 1732 at one or more sides of the fifth vibration device 500C may be the same as the sixth partition 1732 at one or more sides of the third vibration device W1. For example, a size of the fifth partition 1731 at the one or more sides of the fifth vibration device 500C may be the same as the fifth partition 1731 at one or more sides of the fourth vibration device W2. For example, a size of the sixth partition 1732 at the one or more sides of the fifth vibration device 500C may be the same as the sixth partition 1732 at one or more sides of the fourth vibration device W2.
With reference to
Therefore, according to an embodiment of the present disclosure, sizes of partitions near a vibration device may be differently adjusted, thereby providing a display apparatus including a vibration device for outputting a sound band of 180 Hz or more and/or a sound band of a full range. For example, a size of a partition of the first vibration device 600HL and the second vibration device 600HR which are film type vibration devices may be configured to be greater than a partition of the other vibration devices, and thus, a sound band of 180 Hz or more and/or a sound band of a full range may be output.
With reference to
According to some embodiments of the present disclosure, at least one first vibration device 600HL may be disposed at a first region (1) of a rear surface of the display panel 110, and at least one second vibration device 600HR may be disposed at a second region (2) of the rear surface of the display panel 110. For example, the first vibration device 600HL may be an upper left channel or a height left channel. For example, the second vibration device 600HR may be an upper right channel or a height right channel.
At least one third vibration device 500L may be disposed at a fourth region (4) of the rear surface of the display panel 110, and at least one fourth vibration device 500R may be disposed at a fifth region (5) of the rear surface of the display panel 110. At least one fifth vibration device 500C may be disposed at a sixth region (6) of the rear surface of the display panel 110. For example, the third vibration device 500L may be a left channel, the fourth vibration device 500R may be a right channel, and the fifth vibration device 500C may be a center channel.
For example, the first vibration device 600HL and the second vibration device 600HR may be an upper channel or a height channel, and the third vibration device 500L, the fourth vibration device 500R, and the fifth vibration device 500C may be a main channel. The first vibration device 600HL and the second vibration device 600HR may be a vibration device which outputs a sound of a full range. The third vibration device 500L, the fourth vibration device 500R, and the fifth vibration device 500C may be a vibration device which outputs a sound of a full range. For example, a sound band of a full range may be about 300 Hz or more, but embodiments of the present disclosure are not limited thereto. For example, when the third vibration device 500L and the fourth vibration device 500R are provided, a left sound and a right sound may be reproduced. Moreover, in the display apparatus according to an embodiment of the present disclosure, because the first vibration device 600HL and the second vibration device 600HR are further provided, an upper channel or a height channel may be reproduced, thereby realizing a real sound for the upper channel. For example, in the display apparatus according to an embodiment of the present disclosure, because the first vibration device 600HL and the second vibration device 600HR are further provided, there may not be a position difference between a screen and a sound image, and thus, a sound image based on the screen may be implemented, thereby realizing a real sound based on a position. Also, because the fifth vibration device 500C configures a center channel in addition to a left sound and a right sound, a display apparatus for outputting a multi-channel sound may be implemented.
According to some embodiments of the present disclosure, the third region (3) may not configure a vibration device. Therefore, vibrations of the first vibration device 600HL and the second vibration device 600HR may be attenuated and absorbed in the third region (3) of the display panel 110, and thus, the transfer of a sound from the first region (1) to the second region (2) may be blocked or reduced and the transfer of a sound from the second region (2) to the first region (1) may be blocked or reduced. Accordingly, a degradation in sound quality caused by interference of sounds generated in the first region (1) and the second region (2) may be reduced, and a sound characteristic of the middle-pitched sound band and the high-pitched sound band may be more enhanced.
Therefore, the display apparatus according to an embodiment of the present disclosure may include five vibration devices and may be configured with a plurality of vibration devices including an upper channel or a height channel and a main channel, thereby providing a display apparatus including five channels. Also, the five vibration devices may be independently supplied with and driven by a sound signal, and thus, each of the five vibration devices may reproduce an independent sound channel.
According to some embodiments of the present disclosure, the third vibration device 500L and the fourth vibration device 500R may be configured as the same vibration device, for the left-right symmetricity of a sound. For example, the third vibration device 500L and the fourth vibration device 500R may be configured as a coil type vibration device. The coil type vibration device may be the vibration device described above with reference to
With reference to
Therefore, according to an embodiment of the present disclosure, sizes of partitions near a vibration device may be differently adjusted, thereby providing a display apparatus including a vibration device for outputting a sound band of 180 Hz or more and/or a sound band of a full range.
A sound wave which is generated when a display device 100 (for example, a display panel 110) vibrates by a vibration device 500 may be spread radially from a center of a vibration device and may travel. The sound wave may be referred to as a progressive wave. The progressive wave may be reflected at one side of a partition to generate a reflected wave, and the reflected wave may travel in a direction opposite to the progressive wave. The reflected wave overlaps and interferes with the progressive wave and does not travel, thereby generating a standing wave that stands at a certain position. A sound pressure is reduced by the standing wave, and for this reason, a sound output characteristic is deteriorated.
When a partition is provided at the display device 100, it is unable to control a peak or dip phenomenon caused by a standing wave. The peak phenomenon may be a phenomenon where a sound pressure level bounces in a specific frequency, and the dip phenomenon may be a phenomenon where generating of a specific frequency is suppressed, and thus, a low sound pressure is generated. A sound output characteristic of the vibration device 500 may be reduced by the peak or dip phenomenon. A structure for controlling the peak or dip phenomenon is not simply implemented but has been implemented through various experiments. Therefore, the pad portion may be provided at the partition so as to decrease the peak or dip phenomenon that are caused by a standing wave occurring in a lengthwise direction of the vibration device. The phenomenon of sound pressure reduction caused by the standing wave generated by interference between the reflected wave and the progressive wave may be reduced by the pad portion. However, a phenomenon may occur where a shape of the partition swells to a screen of the display device 100 (for example, the display panel 110) due to a shape of the pad portion, and there may occur a problem where the display panel is recognized unevenly because the display device or the display panel is not flat or a supporting member is not flat. Such a phenomenon may be an uneven phenomenon or a wave phenomenon (hereinafter referred to as a wave phenomenon) of the display device 100 (for example, the display panel 110) or the supporting member 300, but embodiments of the present disclosure are not limited thereto. Therefore, the partition should be implemented to prevent the wave phenomenon and to easily control the peak or dip phenomenon caused by a standing wave. Accordingly, the inventors have performed various experiments on a shape of the partition. Through the various experiments, the inventors have recognized that the partition should be disposed based on a shape of the display device 100 (for example, the display panel 110). For example, the partition may have a tetragonal shape, but is not limited thereto and a shape of the partition may be changed based on a shape or a perimeter shape of the display panel 110. When the display device 100 (for example, the display panel 110) is a curved display panel device or a curve display panel device having a curve shape or the like, the partition may have a curved shape or a curve shape. Therefore, because the partition is disposed along a shape or a perimeter shape of the display device 100 (for example, the display panel 110), the attraction of the display device 100 (for example, the display panel 110) may decrease in a process of attaching the supporting member 300 on the display device 100 (for example, the display panel 110), and thus, the wave phenomenon may be prevented.
A shape of the pad portion may be configured to prevent the wave phenomenon from occurring when the display device 100 is pulled in a process of attaching to the supporting member by the pad portion at the supporting member. Alternatively, a shape of the pad portion may be configured to prevent the wave phenomenon from occurring when the display device 100 is pulled in a process of attaching to the supporting member by the pad portion at the display panel. For example, the pad portion should be implemented to easily control the peak or dip phenomenon caused by a standing wave of the vibration device and to prevent the wave phenomenon. In the following embodiments, an example where a partition is disposed at a supporting member will be described, and the embodiments of the present disclosure are not limited thereto, and the partition may be disposed at a rear surface of a display panel. To illustrate a vibration device and a partition, an example where the partition is disposed at a supporting member will be described. For example, when the partition is disposed at the supporting member, an adverse influence of image quality of the display panel caused by the partition disposed at the display panel may be reduced.
With reference to
With reference to
With reference to
With reference to
One or more pad portions may be further disposed at one or more other sides of the third partition 1721. For example, a 5-1st pad portion 911 and a 5-2nd pad portion 912 may be further disposed at one or more other sides of the third partition 1721. One or more pad portions may be further disposed at another side of a side on which the 3-1st pad portion 711 and the 3-2nd pad portion 712 are disposed. For example, the 5-1st pad portion 911 and the 5-2nd pad portion 912 may be further disposed at another side of the side on which the 3-1st pad portion 711 and the 3-2nd pad portion 712 are disposed. The 5-1st pad portion 911 and the 5-2nd pad portion 912 may be disposed toward a fifth vibration device 500C. The 5-1st pad portion 911 and the 5-2nd pad portion 912 may be configured as one body or a single body, but embodiments of the present disclosure are not limited thereto. For example, one or more among the 5-1st pad portion 911 and the 5-2nd pad portion 912 may be configured as two or more elements. The 5-1st pad portion 911 and the 5-2nd pad portion 912 may include one or more among a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, a single-sided tape, a single-sided foam tape, a single-sided pad, a single-sided foam pad, an adhesive, and a bond, but embodiments of the present disclosure are not limited thereto. For example, the 3-1st pad portion 711, the 3-2nd pad portion 712, the 5-1st pad portion 911, and the 5-2nd pad portion 912 may be disposed at one or more sides of the third partition 1721. For example, one or more pad portions facing two or more vibration devices may be disposed at one or more sides of the third partition 1721. For example, one or more pad portions facing the third vibration device W1 and the fifth vibration device 500C may be disposed at one or more sides of the third partition 1721.
With reference to
One or more pad portions may be further disposed at one or more other sides of the fourth partition 1722. For example, a 5-3rd pad portion 913 and a 5-4th pad portion 914 may be disposed at one or more other sides of the fourth partition 1722. One or more pad portions may be further disposed at another side of the side on which the 4-1st pad portion 811 and the 4-2nd pad portion 812 are disposed. For example, the 5-3rd pad portion 913 and the 5-4th pad portion 914 may be further disposed at another side of the side on which the 4-1st pad portion 811 and the 4-2nd pad portion 812 are disposed. The 5-3rd pad portion 913 and the 5-4th pad portion 914 may be disposed toward a fifth vibration device 500C. The 5-3rd pad portion 913 and the 5-4th pad portion 914 may be configured as one body or a single body, but embodiments of the present disclosure are not limited thereto. For example, one or more among the 5-3rd pad portion 913 and the 5-4th pad portion 914 may be configured as two or more elements. The 5-3rd pad portion 913 and the 5-4th pad portion 914 may include one or more among a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, a single-sided tape, a single-sided foam tape, a single-sided pad, a single-sided foam pad, an adhesive, and a bond, but embodiments of the present disclosure are not limited thereto. For example, one or more pad portions facing two or more vibration devices may be disposed at one or more sides of the fourth partition 1722. For example, one or more pad portions facing the fourth vibration device W2 and the fifth vibration device 500C may be disposed at one or more sides of the fourth partition 1722. For example, the 5-1st to 5-4th pad portions 911 to 914 may be disposed at a sixth region (6). For example, the 5-1st to 5-4th pad portion 911 to 914 may be disposed at the sixth region (6) and may be disposed toward the fifth vibration device 500C.
With reference to
A 2-5th pad portion 825 may be further disposed at one or more sides of the fifth partition 1731. The 2-5th pad portion 825 may be disposed toward the second vibration device 500HR. The 2-5th pad portion 825 may be configured as one element, but embodiments of the present disclosure are not limited thereto. For example, the 2-5th pad portion 825 may be configured as two or more elements. One or more pad portions may be disposed at a side facing a side on which the 2-5th pad portion 825 is disposed. For example, a 2-6th pad portion 826 may be further disposed at a side facing the side on which the 2-5th pad portion 825 is disposed. The 2-6th pad portion 826 may be disposed toward the second vibration device 500HR. The 2-6th pad portion 826 may be configured as one element, but embodiments of the present disclosure are not limited thereto. For example, the 2-6th pad portion 726 may be configured as two or more elements. The 2-5th pad portion 825 and the 2-6th pad portion 826 may include one or more among a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, a single-sided tape, a single-sided foam tape, a single-sided pad, a single-sided foam pad, an adhesive, and a bond, but embodiments of the present disclosure are not limited thereto. For example, the 2-1st to 2-6th pad portions 821 to 826 may be disposed at the second region (2). For example, the 2-1st to 2-6th pad portions 821 to 826 may be disposed at the second region (2) and may be disposed toward the second vibration device 500HR. Because the 2-5th pad portion 825 and the 2-6th pad portion 826 are further provided, a reduction in a sound wave caused by a standing wave may more decrease, and a sound output characteristic of a vibration device may be more enhanced.
With reference to
A 4-5th pad portion 815 may be further disposed at one or more sides of the sixth partition 1732. The 4-5th pad portion 815 may be disposed toward the fourth vibration device W2. The 4-5th pad portion 815 may be configured as one element, but embodiments of the present disclosure are not limited thereto. For example, the 4-5th pad portion 815 may be configured as two or more elements. One or more pad portions may be disposed at a side facing a side on which the 4-5th pad portion 815 is disposed. For example, a 4-6th pad portion 816 may be further disposed at a side facing the side on which the 4-5th pad portion 815 is disposed. For example, the 4-6th pad portion 816 may be further disposed at another side of the fifth partition 1731. The 4-6th pad portion 816 may be disposed toward the fourth vibration device W2. The 4-6th pad portion 816 may be configured as one element, but embodiments of the present disclosure are not limited thereto. For example, the 4-6th pad portion 816 may be configured as two or more elements. The 4-5th pad portion 815 and the 4-6th pad portion 816 may include one or more among a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, a single-sided tape, a single-sided foam tape, a single-sided pad, a single-sided foam pad, an adhesive, and a bond, but embodiments of the present disclosure are not limited thereto. For example, the 4-1st to 4-6th pad portions 811 to 816 may be disposed at the fifth region (5). For example, the 4-1st to 4-6th pad portions 811 to 816 may be disposed at the fifth region (5) and may be disposed toward the fourth vibration device W2. Because the 4-5th pad portion 815 and the 4-6th pad portion 816 are further provided, a reduction in a sound wave caused by a standing wave may more decrease, and a sound output characteristic of a vibration device may be more enhanced.
A 5-5th pad portion 915 may be further disposed at one or more sides of the sixth partition 1732. The 5-5th pad portion 915 may be disposed toward the fifth vibration device 500C. The 5-5th pad portion 915 may be configured as one element, but embodiments of the present disclosure are not limited thereto. For example, the 5-5th pad portion 915 may be configured as two or more elements. One or more pad portions may be disposed at a side facing a side on which the 5-5th pad portion 915 is disposed. For example, a 5-6th pad portion 916 may be further disposed at a side facing the side on which the 5-5th pad portion 915 is disposed. For example, the 5-6th pad portion 916 may be further disposed at another side of the fifth partition 1731. The 5-6th pad portion 916 may be disposed toward the fifth vibration device 500C. The 5-6th pad portion 916 may be configured as one element, but embodiments of the present disclosure are not limited thereto. For example, the 5-6th pad portion 916 may be configured as two or more elements. The 5-5th pad portion 915 and the 5-6th pad portion 916 may include one or more among a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, a single-sided tape, a single-sided foam tape, a single-sided pad, a single-sided foam pad, an adhesive, and a bond, but embodiments of the present disclosure are not limited thereto. For example, the 5-1st to 5-6th pad portions 911 to 916 may be disposed at the sixth region (6). For example, the 5-1st to 5-6th pad portions 911 to 916 may be disposed at the sixth region (6) and may be disposed toward the fifth vibration device 500C. Because the 5-5th pad portion 915 and the 5-6th pad portion 916 are further provided, a reduction in a sound wave caused by a standing wave may more decrease, and a sound output characteristic of a vibration device may be more enhanced.
With reference to
One or more bent portions may be further provided at one or more sides of a fifth partition 1731 toward one or more vibration device. For example, a first bent portion 701 may be provided at one or more sides of the fifth partition 1731 toward a third vibration device W1. A second bent portion 702 may be provided at one or more sides of the fifth partition 1731 toward a fourth vibration device W2. A third bent portion 703 may be provided at one or more sides of the fifth partition 1731 toward a fifth vibration device 500C.
One or more bent portions may be further provided at one or more sides of sixth partition 1732 toward one or more vibration device. For example, the sixth partition 1732 may include a fourth bent portion 704 disposed toward the third vibration device W1. The sixth partition 1732 may include a fifth bent portion 705 disposed toward the fourth vibration device W2. The sixth partition 1732 may include a sixth bent portion 706 disposed toward the fifth vibration device 500C.
With reference to
A bent portion may have an open structure at a center portion of a vibration device. However, embodiments of the present disclosure are not limited thereto, and the bent portion may have a V-shaped closed structure at the center portion of the vibration device. When the bent portion has the open structure at the center portion of the vibration device, the material cost may be reduced compared to the closed structure. According to a sound characteristic experiment, when the bent portion has the open structure at the center portion of the vibration device, compared with a case where the bent portion has the closed structure at the center portion of the vibration device, the inventors have confirmed that a sound characteristic difference is very small or there is no sound characteristic difference. Accordingly, because one or more bent portions are provided at one or more among the fifth and sixth partitions 1731 and 1732, a reduction in a sound wave caused by a standing wave of the vibration device may decrease.
With reference to
With reference to
For example, the first vibration device 600HL may be configured to be disposed on the same plane as the third vibration device W1. For example, the first vibration device 600HL may be configured to be disposed on the same plane as the third vibration device W1 in the lengthwise direction of the display device 100. Based on this configuration, a sense of sound field output from the first vibration device 600HL and the third vibration device W1 may be maximized, thereby providing a display apparatus with an enhanced sense of sound field.
A ninth partition 7212 may be further provided near a first vibration device 600HL. The ninth partition 7212 may be configured to be smaller than or equal to a size of a second partition 1712 and/or a fifth partition 1731 as described above with reference to
For example, the second vibration device 600HR may be configured to be disposed on the same plane as the fourth vibration device W2. For example, the second vibration device 600HR may be configured to be disposed on the same plane as the fourth vibration device W2 in the lengthwise direction of the display device 100. Based on this configuration, a sense of sound field output from the second vibration device 600HR and the fourth vibration device W2 may be maximized, thereby providing a display apparatus with an enhanced sense of sound field.
The eighth and ninth partitions 7211 and 7212 may include one or more among a double-sided tape, a double-sided foam tape, a double-sided foam pad, a single-sided tape, a single-sided foam tape, a single-sided foam pad, an adhesive, and a bond, but embodiments of the present disclosure are not limited thereto. When the fifteenth to twentieth partitions 7211 to 7216 is configured with a double-sided tape or a double-sided foam pad, an adhesive force may be enhanced in a process of attaching a rear surface of the display device 100 on an upper surface of the supporting member 300. For example, the eighth and ninth partitions 7211 and 7212 may include a material having elasticity which enables a certain degree of compression. For example, the eighth and ninth partitions 7211 and 7212 may include polyurethane, polyolefin, or polyethylene, but embodiments of the present disclosure are not limited thereto.
A description of a pad portion is the same as the descriptions of
With reference to
A vibration device 1800 according to another embodiment of the present disclosure may be a woofer-integrated vibration device, a hybrid vibration device, and a vibration device having a woofer, but embodiments of the present disclosure are not limited thereto.
With reference to
The vibration device 1800 may include a frame for accommodating the first vibration generating part 1801 and the second vibration generating part 1802. The frame may include a lower frame 1610a that supports a lower portion of the first and second vibration generating portions 1801 and 1802 and a side frame 1610b connected or coupled to the lower frame 1610a. The frame may be a yoke, but embodiments of the present disclosure are not limited thereto.
The lower frame 1610a may support a rear surface of a magnet 1620. For example, the lower frame 1610a may support a magnet 1620. The magnet 1620 may share the first vibration generating part 1801 and the second vibration generating part 1802. For example, a bobbin 1650a of the first vibration generating part 1801 and a coil 1660a near the bobbin 1650a may be disposed near the magnet 1620. For example, a second bobbin 1650b of the second vibration generating part 1802 and a second coil 1660b near the second bobbin 1650b may be disposed near the magnet 1620. For example, the lower frame 1610a and a plate 1611 may be respectively disposed at a lower portion and an upper portion of the magnet 1620, and may increase a magnetic flux density generated through the magnet 1620, the coil 1660a, and the second coil 1660b, thereby enhancing a vibration characteristic. The lower frame 1610a may be a yoke, but embodiments of the present disclosure are not limited thereto.
The side frame 1610b may be connected or coupled to the lower frame 1610a, and may include at least one hole 217 to output a sound or a vibration. For example, the hole 217 may a vent hole. For example, the hole 217 may output sound of a low-pitched sound band, generated by a vibration plate 214b of the second vibration generating part 1802 in an air gap inside of the vibration device 1800, to a rearward region behind a display panel 110.
The side frame 1610b may include a conductive material, and may control a magnetic flux generated by the magnet 1620. For example, the side frame 1610b may surround the magnet 1620 with being spaced apart therefrom, and thus, may allow a magnetic flux generated by the magnet 1620 to concentrate on the inside of the second bobbin 1650b, thereby preventing a leakage magnetic flux. The side frame 1610b may be a yoke, but embodiments of the present disclosure are not limited thereto. The hole 217 may be provided in the side frame 1610b, and moreover, may be provided in the lower frame 1610a and may be provided in a region connected to the side frame 1610b and the lower frame 1610a. The side frame 1610b may be connected to a rear cover by a connection member 1710 such as a nut or bolt, or may be disposed between the display panel.
The first vibration generating part 1801 may include the magnet 1620 disposed on the frame, the bobbin 1650a near the magnet 1620, and a coil 1660a and a damper 1670a near the bobbin 1650a. For example, their descriptions are similar to descriptions given above with reference to
The magnet 1620 may be disposed on the lower frame 1610a. For example, the magnet 1620 may be disposed between a plate 1611 and the lower frame 1610a. The lower frame 1610a and the plate 1611 may control a magnetic flux generated by the magnet 1620. For example, the magnet 1620 may be surrounded by the lower frame 1610a and the plate 1611, and thus, the magnetic flux generated by the magnet 1620 may concentrate on the inside of the bobbin 1650a and may be controlled.
The bobbin 1650a may be attached at a rear surface of a bobbin ring 1652a. For example, when a sound generating current (or a vibration generating current) is applied to the coil 1660a wound around an outer circumference surface of the bobbin 1650a and thus a magnetic field is generated in the first vibration generating part 1801, the display device, for example, the display panel may vibrate based on the magnetic field by the bobbin ring 1652a. The bobbin ring 1652a may be between the bobbin 1650a and the display panel, and may transfer a vibration of the bobbin 1650a to the display panel. The first vibration generating part 1801 may output a sound of a middle-high-pitched sound band.
The second vibration generating part 1802 may include the magnet 1620 disposed on the frame, the plate 1611 on the magnet 1620, the second bobbin 1650b near the magnet 1620, and a second coil 1660b and a second damper 1670b near the second bobbin 1650b.
A vibration plate 214b may be disposed on the second bobbin 1650b. For example, the vibration plate 214b may be spaced apart from the rear surface of the display panel, and may prevent heat occurring in the second bobbin 1650b from being transferred to the display panel.
When the sound generating current (or a vibration generating current) is applied to the second coil 1660b wound around an outer circumference surface of the second bobbin 1650b and thus a magnetic field is generated in the second vibration generating part 1802, the second bobbin 1650b may vibrate an air layer or an air gap of a vibration plate peripheral portion by the vibration plate 214b based on the magnetic field to output a sound. For example, a front surface of the second bobbin 1650b may contact the vibration plate 214b, and may vibrate the vibration plate 214b based on a state where a current is applied thereto or not. The second vibration generating part 1802 may output sound to a forward region and a rearward region with respect to the vibration plate 214b. For example, the second vibration generating part 1802 may output a sound of a low-pitched sound band. For example, a sound generated by the vibration plate 214b of the second vibration generating part 1802 may include a first low-pitched sound propagated to an upper portion of the vibration plate 214b and a second low-pitched sound propagated to a lower portion of the vibration plate 214b. For example, the second vibration generating part 1802 may be a woofer, but embodiments of the present disclosure are not limited thereto.
The magnet 1620 may be disposed on the lower frame 1610a. The plate 1611 may be spaced apart from the vibration plate 214b. The second bobbin 1650b may be disposed on a rear surface of the vibration plate 214b. For example, the second bobbin 1650b may surround the magnet 1620 and the plate 1611.
The second damper 1670b may be disposed between the first vibration generating part 1801 and the second vibration generating part 1802. For example, the second damper 1670b may be disposed between the damper 1670a of the first vibration generating part 1801 and the second bobbin 1650b of the second vibration generating part 1802. For example, the second damper 1670b may be disposed between the first vibration generating part 1801 and the vibration plate 214b of the second vibration generating part 1802. The vibration plate 214b may not physically contact the first vibration generating part 1801. For example, the second damper 1670b may prevent sound interference between the first vibration generating part 1801 and the second vibration generating part 1802. An edge 1670c may be disposed on the vibration plate 214b. The edge 1670c may prevent deformation such as distortion of the vibration plate 214b when the vibration plate 214b performs a vertical motion, and thus, may provide clean sound quality and may enhance the reliability of the vibration device 1800. The second damper 1670b may be a first suspension, and the edge 1670c may be a second suspension, but embodiments of the present disclosure are not limited thereto.
The magnet 1620 of the first vibration generating part 1801 and the magnet 1620 of the second vibration generating part 1802 may have magnetic fields in opposite directions. The first vibration generating part 1801 may vibrate (or directly vibrate) the display panel to output sound of a high-pitched sound band to a forward region in front of the display panel, and the second vibration generating part 1802 may output sound of a low-pitched sound band to a rearward region behind the display panel. Accordingly, because the first vibration generating part 1801 and the second vibration generating part 1802 have the magnetic fields in opposite directions, a vibration of the first vibration generating part 1801 and the second vibration generating part 1802 may be independently driven or controlled.
Therefore, the woofer-integrated vibration device may include a woofer disposed near the vibration device. The vibration device may be disposed on the rear surface of the display panel and may generate a sound of a middle-high-pitched sound band, and the woofer may be spaced apart from the rear surface of the display panel and may perform a vertical vibration to generate a sound of a low-pitched sound band. For example, the vibration device and the woofer may be driven based on different sound signals or voice signals applied thereto. Accordingly, the sound of the low-pitched sound band may be enhanced by the woofer-integrated vibration device.
To provide a sound in a display apparatus, a speaker may be implemented as a film type in a case which implements the speaker, and thus, a thickness of the display apparatus may be configured to be thin. A film type vibration device may be manufactured to have a large area, and thus, may be applied to a large-area display apparatus. However, the film type vibration device may be low in piezoelectric characteristic, and thus, due to a low vibration, there may be a problem where it is difficult to apply the film type vibration device to the large-area display apparatus. When the film type vibration device is implemented by applying ceramic so as to enhance a piezoelectric characteristic, there may be a problem where durability is weak and a size of ceramic is limited.
When a vibration device including a piezoelectric composite including piezoelectric ceramic is applied to a display apparatus, the piezoelectric composite may vibrate in a lateral direction with respect to a widthwise direction (for example, in a lateral direction with respect to a widthwise direction of the display apparatus), and thus, it may be unable to sufficiently vibrate the display apparatus in an upward-downward (or forward-rearward) direction, whereby it may be difficult to apply the vibration device to the display apparatus and it may be unable to output a desired sound in a forward direction of the display apparatus. In a case where a film type piezoelectric element is applied to a display apparatus, there may be a problem where a sound pressure level characteristic is low compared to a speaker such as an exciter. In a case where a stack type piezoelectric element, where a plurality of films including a film type piezoelectric element formed of a plurality of layers are stacked, is applied to a display apparatus so as to improve a sound pressure level, there may be a problem where power consumption increases and a thickness of the display apparatus is thickened. Also, in a case where one vibration device is disposed on a rear surface of a display panel (for example, a mobile display apparatus), the inventors have recognized that a mono sound is output, but there is a problem where it is difficult to output a multi-channel sound. Therefore, a vibration device may be further disposed at a periphery of a display panel so as to implement a multi-channel sound, but it may be difficult to place an exciter in a flexible display apparatus where a curve portion is provided at the display panel. Also, in a case where a speaker including piezoelectric ceramic is provided, there may be a problem where piezoelectric ceramic is easily broken. According to an embodiment of the present disclosure, a vibration device applicable to a display apparatus which realizes a sound characteristic of a multichannel and includes the flexible display apparatus may be provided. This will be described below with reference to
With reference to
The piezoelectric vibration portion 451 may include a piezoelectric material (or an electroactive material) having a piezoelectric effect. For example, the piezoelectric material may have a characteristic where pressure or twisting (or bending) is applied to a crystalline structure by an external force, a potential difference occurs due to dielectric polarization caused by a relative position change of a positive (+) ion and a negative (−) ion, and a vibration is generated by an electric field based on a voltage applied thereto. The piezoelectric vibration portion 451 may be referred to as a vibration layer, a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a vibration portion, a piezoelectric material portion, an electroactive portion, a piezoelectric structure, an inorganic material layer, or an inorganic material portion, but embodiments of the present disclosure are not limited thereto.
The piezoelectric vibration portion 451 may be formed of a transparent, semitransparent, or opaque piezoelectric material (or an electroactive material), and may be transparent, semitransparent, or opaque. The piezoelectric vibration portion 451 may be formed of a ceramic-based material for generating a relatively high vibration, or may be formed of piezoelectric ceramic having a perovskite-based crystalline structure. The perovskite crystalline structure may have a piezoelectric effect and an inverse piezoelectric effect and may be a plate-shaped structure having orientation. The perovskite crystalline structure may be represented by a chemical formula “ABO3”. Here, A may include a divalent metal element, and B may include a tetravalent metal element. For example, in the chemical formula “ABO3”, A and B may be cations, and O may be anions. For example, the perovskite crystalline structure may include at least one or more of PbTiO3, PbZrO3, PbZrTiO3, BaTiO3, and SrTiO3, but embodiments of the present disclosure are not limited thereto.
The piezoelectric vibration portion 451 according to an embodiment of the present disclosure may include a lead zirconate titanate (PZT)-based material including lead (Pb), zirconium (Zr), and titanium (Ti) or may include a lead zirconate nickel niobate (PZNN)-based material including lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but embodiments of the present disclosure are not limited thereto. Also, the piezoelectric vibration portion 451 may include at least one or more of CaTiO3, BaTiO3, and SrTiO3 without Pb, but embodiments of the present disclosure are not limited thereto.
The piezoelectric vibration portion 451 according to an embodiment of the present disclosure may be configured in a circular shape, an ellipse shape, or a polygonal shape, but embodiments of the present disclosure are not limited thereto.
The first electrode portion E1 may be disposed at a first surface (or a top surface or an upper surface or a front surface) of the piezoelectric vibration portion 451, and electrically connected to the first surface of the piezoelectric vibration portion 451. For example, the first electrode portion E1 may have a single-body electrode type which is disposed at a whole first surface of the piezoelectric vibration portion 451. For example, the first electrode portion may have the same shape as the piezoelectric vibration portion 451, but embodiments of the present disclosure are not limited thereto. The first electrode portion E1 according to an embodiment of the present disclosure may be formed of a transparent conductive material, a semitransparent conductive material, or an opaque conductive material. For example, examples of the transparent conductive material or the semitransparent conductive material may include indium tin oxide (ITO) or indium zinc oxide (IZO), but embodiments of the present disclosure are not limited thereto. Examples of the opaque conductive material may include aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), and Mg or an alloy thereof, but embodiments of the present disclosure are not limited thereto.
The second electrode portion E2 may be disposed at a second surface (or a bottom surface or a lower surface or a rear surface), which is opposite to the first surface, of the piezoelectric vibration portion 451, and electrically connected to the second surface of the piezoelectric vibration portion 451. For example, the second electrode portion E2 may have a single-body electrode type which is disposed at a whole second surface of the piezoelectric vibration portion 451. For example, the second electrode portion E2 may have a larger size than that of the piezoelectric vibration portion 451, and may have the same shape as the piezoelectric vibration portion 451, but embodiments of the present disclosure are not limited thereto. The second electrode portion E2 according to an embodiment of the present disclosure may be formed of a transparent conductive material, a semitransparent conductive material, or an opaque conductive material. For example, the second electrode portion E2 may be formed of the same material as the first electrode portion E1, but embodiments of the present disclosure are not limited thereto. In another example, the second electrode portion E2 may be formed of a different material than the first electrode portion E1.
The piezoelectric vibration portion 451 may be polarized (or poling) by a certain voltage applied to the first electrode portion E1 and the second electrode portion E2 in a certain temperature atmosphere, or a temperature atmosphere that may be changed from a high temperature to a room temperature. Embodiments of the present disclosure are not limited to these examples. The piezoelectric vibration portion 451 may vibrate by alternately and/or repeatedly contract and expand based on a piezoelectric effect (or a piezoelectric characteristic) according to a sound signal (or a voice signal) applied to the first electrode portion E1 and the second electrode portion E2 from the outside.
The vibration device 450 according to an embodiment of the present disclosure may further include a first protection member and a second protection member.
The first protection member may be disposed at the first electrode portion E1 and protect the first electrode portion E1. For example, the first protection member may be formed of a plastic material, a fiber material, or wood material, but embodiments of the present disclosure are not limited thereto.
The second protection member may be disposed at the second electrode portion E2 and protect the second electrode portion E2. For example, the second protection member may be formed of a plastic material, a fiber material, or wood material, but embodiments of the present disclosure are not limited thereto. For example, the first protection member may be formed of the same or different material as the second protection member. Any one of the first protection member and the second protection member may be attached to or coupled to the display panel via an adhesive member.
With reference to
The vibration device 450 according to an embodiment of the present disclosure may include a piezoelectric vibration portion 453, a first electrode portion E1, and a second electrode portion E2.
The piezoelectric vibration portion 453 may include a piezoelectric material, a composite piezoelectric material, or an electroactive material, and the piezoelectric material, the composite piezoelectric material and the electroactive material may have a piezoelectric effect. The piezoelectric vibration portion 453 may be referred to as a vibration layer, a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a vibration portion, a piezoelectric material portion, an electroactive portion, a piezoelectric structure, a piezoelectric composite layer, a piezoelectric composite, or a piezoelectric ceramic composite, but embodiments of the present disclosure are not limited thereto. The piezoelectric vibration portion 453 may be formed of a transparent, semitransparent, or opaque piezoelectric material, and may be transparent, semitransparent, or opaque.
The piezoelectric vibration portion 453 according to an embodiment of the present disclosure may include a plurality of first portions 453a and a plurality of second portions 453b. For example, the plurality of first portions 453a and the plurality of second portions 453b may be alternately and repeatedly arranged in a first direction X (or a second direction Y). For example, the first direction X may be a widthwise direction or a first horizontal direction of the piezoelectric vibration portion 453. The second direction Y may be a lengthwise direction or a second horizontal direction of the piezoelectric vibration portion 453. An embodiment of the present disclosure is not limited thereto, and the first direction X may be the lengthwise direction or the second horizontal direction of the piezoelectric vibration portion 453, and the second direction Y may be the widthwise direction or the first horizontal direction of the piezoelectric vibration portion 453.
Each of the plurality of first portions 453a may be configured as an inorganic material portion. The inorganic material portion may include the above-described piezoelectric material. For example, each of the plurality of first portions 453a may include a piezoelectric material which is be substantially the same as the piezoelectric vibration portion 453 described above with reference to
Each of the plurality of first portions 453a according to an embodiment of the present disclosure may be disposed between the plurality of second portions 453b. For example, the plurality of first portions 453a may have a first width W1 parallel to the first direction X (or the second direction Y) and a length parallel to the second direction Y (or the first direction X). Each of the plurality of second portions 453b may have a second width W2 parallel to the first direction X (or the second direction Y) and may have a length parallel to the second direction Y (or the first direction X). The first width W1 may be the same as or different from the second width W2. For example, the first width W1 may be greater than the second width W2. For example, the first portion 453a and the second portion 453b may include a line shape or a stripe shape which has the same size or different sizes. Therefore, the piezoelectric vibration portion 453 may include a 2-2 composite structure and thus may have a resonance frequency of 20 kHz or less, but embodiments are not limited thereto and a resonance frequency of the piezoelectric vibration portion 453 may vary based on one or more of a shape, a length, and a thickness.
In the piezoelectric vibration portion 453, each of the plurality of first portions 453a and the plurality of second portions 453b may be disposed (or arranged) at the same plane (or the same layer) in parallel. Each of the plurality of second portions 453b may be connected or attached to a second portion 453b adjacent thereto. For example, each of the plurality of second portions 453b may be configured to fill a gap between two adjacent first portions of the plurality of first portions 453a and may be connected or attached to a second portion 453b adjacent thereto. The piezoelectric vibration portion 453 may extend by a desired size or length based on the side coupling (or connection) of the first portion 453a and the second portion 453b.
In the piezoelectric vibration portion 453, a width (or a size) W2 of each of the plurality of second portions 453b may progressively decrease in a direction from a center portion to both peripheries (or both ends) of the piezoelectric vibration portion 453 or the vibration device 450.
According to an embodiment of the present disclosure, a second portion 453b, having a largest width W2 among the plurality of second portions 453b, may be located at a portion at which a highest stress may concentrate when the piezoelectric vibration portion 453 or the vibration device 450 is vibrating in a vertical direction Z (or a thickness direction). A second portion 453b, having a smallest width W2 among the plurality of second portions 453b, may be located at a portion where a relatively low stress may occur when the piezoelectric vibration portion 453 or the vibration device 450 is vibrating in the vertical direction Z. For example, the second portion 453b, having the largest width W2 among the plurality of second portions 453b, may be disposed at the center portion of the piezoelectric vibration portion 453, and the second portion 453b, having the smallest width W2 among the plurality of second portions 453b may be disposed at the both edges or peripheries of the piezoelectric vibration portion 453. Therefore, when the piezoelectric vibration portion 453 or the vibration device 450 is vibrating in the vertical direction Z, interference of a sound wave or overlapping of a resonance frequency, occurring in the portion on which the highest stress concentrates, may be reduced or minimized. Thus, dipping phenomenon of a sound pressure level occurring in the low-pitched sound band may be reduced, thereby improving flatness of a sound characteristic in the low-pitched sound band. For example, flatness of a sound characteristic may be a level of a deviation between a highest sound pressure and a lowest sound pressure.
In the piezoelectric vibration portion 453, each of the plurality of first portions 453a may have different sizes (or widths). For example, a size (or a width) of each of the plurality of first portions 453a may progressively decrease or increase in a direction from the center portion to the both peripheries (or both ends) of the piezoelectric vibration portion 453 or the vibration device 450. For example, in the piezoelectric vibration portion 453, a sound pressure level characteristic of a sound may be enhanced and a sound reproduction band may increase, based on various natural vibration frequencies according to a vibration of each of the plurality of first portions 453a having different sizes.
Each of the plurality of second portions 453b may be disposed between the plurality of first portions 453a. Therefore, in the piezoelectric vibration portion 453 or the vibration device 450, vibration energy by a link in a unit lattice of the first portion 453a may increase by a corresponding second portion 453b. Thus, a vibration may increase, and a piezoelectric characteristic and flexibility may be secured. For example, the second portion 453b may include at least one or more of an epoxy-based polymer, an acryl-based polymer, and a silicone-based polymer, but embodiments of the present disclosure are not limited thereto.
The plurality of second portions 453b according to an embodiment of the present disclosure may be configured as an organic material portion. For example, the organic material portion may be disposed between the inorganic material portions and may absorb an impact applied to the inorganic material portion (or the first portion), may release a stress concentrating on the inorganic material portion to enhance the total durability of the piezoelectric vibration portion 453 or the vibration device 450, and may provide flexibility to the piezoelectric vibration portion 453 or the vibration device 450.
The plurality of second portions 453b according to an embodiment of the present disclosure may have modulus and viscoelasticity that are lower than those of the first portion 453a, and thus, the second portion 453b may enhance the reliability of the first portion 453a vulnerable to an impact due to a fragile characteristic. For example, the second portion 453b may include a material having a loss coefficient of about 0.01 to about 1.0 and modulus of about 0.1 [GPa] to about 10 [GPa].
The organic material portion included in the second portion 453b may include one or more of an organic material, an organic polymer, an organic piezoelectric material, and an organic non-piezoelectric material that has a flexible characteristic in comparison with the inorganic material portion of the first portions 453a. For example, the second portion 453b may be referred to as an adhesive portion, an elastic portion, a bending portion, a damping portion, or a flexible portion having flexibility, but embodiments of the present disclosure are not limited thereto.
The plurality of first portions 453a and the second portion 453b may be disposed on (or connected to) the same plane, and thus, the piezoelectric vibration portion 453 of the vibration array 210 according to various embodiments of the present disclosure may have a single thin film-type. For example, the piezoelectric vibration portion 453 may have a structure in which a plurality of first portions 453a is connected to one side of the piezoelectric vibration portion 453. For example, the piezoelectric vibration portion 453 may have a structure in which a plurality of first portions 453a extends to one side of the piezoelectric vibration portion 453. For example, the plurality of first portions 453a may have a structure connected to a whole the piezoelectric vibration portion 453. For example, the plurality of first portions 453a may have a structure extended to a whole the piezoelectric vibration portion 453. For example, the piezoelectric vibration portion 453 may be vibrated in a vertical direction (or a thickness direction) by the first portion 453a having a vibration characteristic and may be bent in a curved shape by the second portion 453b having flexibility. Also, in the piezoelectric vibration portion 453 according to various embodiments of the present disclosure, a size of the first portion 453a and a size of the second portion 453b may be adjusted based on a piezoelectric characteristic and flexibility needed for the piezoelectric vibration portion 453 or the vibration device 450. For example, when the piezoelectric vibration portion 453 needs a piezoelectric characteristic rather than flexibility, a size of the first portion 453a may be adjusted to be greater than that of the second portion 453b. As another example, when the piezoelectric vibration portion 453 needs flexibility rather than a piezoelectric characteristic, a size of the second portion 453b may be adjusted to be greater than that of the first portion 453a. For example, the size of the second portion 453b and the size of the first portion 453a may be one or more of a width, a length, and a thickness. Accordingly, a size of the piezoelectric vibration portion 453 may be adjusted based on a characteristic needed therefor, and thus, the piezoelectric vibration portion 453 may be easy to design.
The first electrode portion E1 may be disposed at a first surface (or an upper surface) of the piezoelectric vibration portion 453. The first electrode portion E1 may be disposed at or coupled to a first surface of each of a plurality of first portions 453a and a first surface of each of a plurality of second portions 453b in common and may be electrically connected to the first surface of each of the plurality of first portions 453a. For example, the first electrode portion E1 may be a single-body electrode type which is disposed at a whole first surface of the piezoelectric vibration portion 453. For example, the first electrode portion E1 may have the same shape as that of the piezoelectric vibration portion 453, but embodiments of the present disclosure are not limited thereto. The first electrode portion E1 according to an embodiment of the present disclosure, as described above with reference to
The second electrode portion E2 may be disposed at a second surface (or a rear surface) opposite to the first surface of the piezoelectric vibration portion 453. The second electrode portion E2 may be disposed at or coupled to a second surface of each of a plurality of first portions 453a and the second surface of each of a plurality of second portions 453b in common and may be electrically connected to a second surface of each of the plurality of first portions 453a. For example, the second electrode portion E2 may be a single-body electrode type which is disposed on a whole second surface of the piezoelectric vibration portion 453. For example, the second electrode portion E2 may have the same shape as that of the piezoelectric vibration portion 453, but embodiments of the present disclosure are not limited thereto. The second electrode portion E2 according to an embodiment of the present disclosure, as described above with reference to
The piezoelectric vibration portion 453 may be polarized (or poling) by a certain voltage applied to the first electrode portion E1 and the second electrode portion E2 in a certain temperature atmosphere, or a temperature atmosphere that may be changed from a high temperature to a room temperature, but embodiments of the present disclosure are not limited thereto. For example, the piezoelectric vibration portion 453 may alternately and repeatedly contract and expand based on an inverse piezoelectric effect according to a sound signal (or voice signal) applied to the first electrode portion E1 and the second electrode portion E2 from the outside to vibrate. For example, the piezoelectric vibration portion 453 may vibrate based on a vertical-direction (or a thickness direction Z) vibration d33 and a horizontal-direction (or a planar direction) vibration d31 by the first electrode portion E1 and the second electrode portion E2. The piezoelectric vibration portion 453 may increase the displacement of the display device by contraction and expansion in the horizontal-direction, thereby further improving the vibration.
According to an embodiment of the present disclosure, the vibration device 450 may include a plurality of inorganic material portion having a piezoelectric characteristic and an organic material portion between the plurality of inorganic material portion. For example, the vibration device 450 may include a plurality of inorganic material portion having a piezoelectric characteristic and an organic material portion connected between the plurality of inorganic material portion.
According to an embodiment of the present disclosure, any one of the first electrode portion E1 and the second electrode portion E2 may be attached or coupled to the display device by an adhesive member.
The vibration device 450 according to an embodiment of the present disclosure may further include a first protection member and a second protection member.
The first protection member may be disposed on the first electrode portion E1 and may protect the first electrode portion E1. For example, the first protection member may include a plastic material, a fiber material, or a wood material.
The second protection member may be disposed on the second electrode portion E2 and may protect the second electrode portion E2. For example, the second protection member may include a plastic material, a fiber material, or a wood material. For example, the first protection member may include a material which is the same as or different from that of the second protection member. Any one of the first protection member and the second protection member may be attached or coupled to the display device by an adhesive member.
With reference to
Each of the plurality of first portions 453a may be disposed to be spaced apart from one another along each of the first direction X and the second direction Y. For example, each of the plurality of first portions 453a may have a hexahedral shape (or a six-sided object shape) having the same size and may be disposed in a lattice shape. For example, each of the plurality of first portions 453a may include a piezoelectric material which is be substantially the same as the first portion 453a described above with reference to
The second portion 453b may be disposed between the plurality of first portions 453a along each of the first direction X and the second direction Y. The second portion 453b may be configured to fill a gap or a space between two adjacent first portions 453a or to surround each of the plurality of first portions 453a, and thus, may be connected or attached to an adjacent first portion 453a. According to an embodiment of the present disclosure, a width of a second portion 453b disposed between two first portions 453a adjacent to each other along the first direction X may be the same as or different from that of the first portion 453a, and a width of a second portion 453b disposed between two first portions 453a adjacent to each other along the second direction Y may be the same as or different from that of the first portion 453a. For example, the second portion 453b may include an organic material which is be substantially the same as the second portion 453b described above with reference to
Therefore, the piezoelectric vibration portion 453 of the vibration device 450 may include a 1-3 composite structure and thus may have a resonance frequency of 30 MHz or less, but embodiments of the present disclosure are not limited thereto and a resonance frequency of the piezoelectric vibration portion 453 may vary based on one or more of a shape, a length, and a thickness.
With reference to
Each of the plurality of first portions 453a according to another embodiment of the present disclosure may have a flat structure of a circular shape. For example, each of the plurality of first portions 453a may have a circular plate shape, but embodiments of the present disclosure are not limited thereto. For example, each of the plurality of first portions 453a may have a dot shape including an oval shape, a polygonal shape, or a donut shape.
The second portion 453b may be disposed between the plurality of first portions 453a along each of the first direction X and the second direction Y. The second portion 453b may be configured to surround each of the plurality of first portions 453a, and thus, may be connected to or attached on a side surface of each of the plurality of first portions 453a. Each of the plurality of first portions 453a and the second portion 453b may be disposed (or arranged) in parallel on the same plane (or the same layer).
In the piezoelectric vibration portion 453 of the vibration device 450 according to another embodiment of the present disclosure, each of the plurality of first portions 453a may have a flat structure of a triangular shape instead of a flat structure of a circular shape. For example, each of the plurality of first portions 453a may have a triangular plate shape.
According to an embodiment of the present disclosure, four adjacent first portions 453a among the plurality of first portions 453a may be adjacent to one another to form a tetragonal or quadrilateral shape (or a square shape). Vertices of the four adjacent first portions 453a forming a tetragonal shape may be adjacent to one another in a center portion (or a central portion) of the tetragonal shape.
According to another embodiment of the present disclosure, six adjacent first portions 453a among the plurality of first portions 453a may be adjacent to one another to form a hexagonal shape (or a regularly hexagonal shape). Vertices of the six adjacent first portions 453a forming a hexagonal shape may be adjacent to one another in a center portion (or a central portion) of the hexagonal shape.
With reference to
The plurality of vibration generators 450A to 450D may be electrically separated and disposed while being spaced apart from each other along each of a first direction X and a second direction Y.
Each of the plurality of vibration generators 450A to 450D may alternately and/or repeatedly contract and expand based on a piezoelectric effect to vibrate. For example, each of the plurality of vibration generators 450A to 450D may be arranged or tiled at a certain interval (or distance) along each of the first direction X and the second direction Y. For example, the vibration device 450 in which the plurality of vibration generators 450A to 450D are arranged or tiled may be referred to as a sound generator, a vibration array, a vibration array portion, a vibration generating array portion, a vibration array structure, a tiling vibration array, a tiling vibration array module, or a tiling vibration film, but embodiments of the present disclosure are not limited thereto.
Each of the plurality of vibration generators 450A to 450D according to an embodiment of the present disclosure may have a tetragonal shape. For example, each of the plurality of vibration generators 450A to 450D according to an embodiment of the present disclosure may have a tetragonal shape having a width of about 5 cm or more, but embodiments of the present disclosure are not limited thereto. For example, each of the plurality of vibration generators 450A to 450D may have a square shape having a size of 5 cm×5 cm or more, but embodiments of the present disclosure are not limited thereto.
Each of the plurality of vibration generators 450A to 450D may be arranged or tiled at a certain interval (or distance), and thus, may be implemented as one vibration generator (or a single vibration generator) which is driven as one complete single-body without being independently driven. According to an embodiment of the present disclosure, with respect to the first direction X, a first separation distance (or first distance or first interval) D1 between the plurality of vibration generators 450A to 450D may be 0.1 mm or more and smaller than 3 cm, but embodiments of the present disclosure are not limited thereto. Also, with respect to the second direction Y, a second separation distance (or second distance or second interval) D2 between the plurality of vibration generators 450A to 450D may be 0.1 mm or more and smaller than 3 cm, but embodiments of the present disclosure are not limited thereto. For example, the first separation distance D1 may be the same as the second separation distance D2 within a process error range.
According to an embodiment of the present disclosure, each of the plurality of vibration generators 450A to 450D may be arranged or tiled to have the separation distances (or intervals) D1 and D2 of 0.1 mm or more and smaller than 3 cm, and thus, may be driven as one vibration generator, thereby increasing a reproduction band and a sound pressure level characteristic of a sound which is generated based on a single-body vibration of the plurality of vibration generators 450A to 450D. For example, the plurality of vibration generators 450A to 450D may be arranged at an interval of 0.1 mm or more and smaller than 5 mm, in order to increase a reproduction band of a sound generated based on a single-body vibration of the plurality of vibration generators 450A to 450D and to increase a sound of a low-pitched sound band (for example, a sound pressure level characteristic in 500 Hz or less).
According to an embodiment of the present disclosure, when the plurality of vibration generators 450A to 450D are arranged at the intervals D1 and D2 of smaller than 0.1 mm or without the intervals D1 and D2, the reliability of the vibration generators 450A to 450D or the vibration device 450 may be reduced due to damage or a crack caused by a physical contact therebetween which occurs when each of the vibration generators 450A to 450D vibrates.
According to an embodiment of the present disclosure, when the plurality of vibration generators 450A to 450D are arranged at the intervals D1 and D2 of 3 cm or more, the plurality of vibration generators 450A to 450D may not be driven as one vibration generator due to an independent vibration of each of the plurality of vibration generators 450A to 450D. Therefore, a reproduction band and a sound pressure level characteristic of a sound which is generated based on vibrations of the plurality of vibration generators 450A to 450D may be reduced. For example, when the plurality of vibration generators 450A to 450D are arranged at the intervals D1 and D2 of 3 cm or more, a sound characteristic and a sound pressure level characteristic of the low-pitched sound band (for example, in 500 Hz or less) may each be reduced.
According to an embodiment of the present disclosure, when the plurality of vibration generators 450A to 450D are arranged at an interval of 5 mm, each of the plurality of vibration generators 450A to 450D may not be perfectly driven as one vibration generator, and thus, a sound characteristic and a sound pressure level characteristic of the low-pitched sound band (for example, in 200 Hz or less) may each be reduced.
According to another embodiment of the present disclosure, when the plurality of vibration generators 450A to 450D are arranged at an interval of 1 mm, each of the plurality of vibration generators 450A to 450D may be driven as one vibration generator, and thus, a reproduction band of a sound may increase and a sound of the low-pitched sound band (for example, a sound pressure level characteristic in 500 Hz or less) may increase. For example, when the plurality of vibration generators 450A to 450D are arranged at an interval of 1 mm, the vibration device 450 may be implemented as a large-area vibrator which is enlarged based on optimization of a separation distance between the plurality of vibration generators 450A to 450D. Therefore, the vibration device 450 may be driven as a large-area vibrator based on a single-body vibration of the plurality of vibration generators 450A to 450D, and thus, a sound characteristic and a sound pressure level characteristic may each increase or enhance in the low-pitched sound band and a reproduction band of a sound generated based on a large-area vibration of the vibration device 450.
Therefore, to implement a single-body vibration (or one vibration generator) of the plurality of vibration generators 450A to 450D, a separation distance between the plurality of vibration generators 450A to 450D may be adjusted to 0.1 mm or more and smaller than 3 cm. Also, to implement a single-body vibration (or one vibration generator) of the plurality of vibration generators 450A to 450D and to increase a sound pressure level characteristic of a sound of the low-pitched sound band, the separation distance between the plurality of vibration generators 450A to 450D may be adjusted to 0.1 mm or more and smaller than 5 mm.
The vibration device 450 according to an embodiment of the present disclosure may include first to fourth vibration generators 450A to 450D which are electrically disconnected (or separated) and/or structurally separated from one another and are disposed spaced apart from one another along each of the first direction X and the second direction Y. For example, the first to fourth vibration generators 450A to 450D may be arranged or tiled in 2×2 form.
According to an embodiment of the present disclosure, the first and second vibration generators 450A and 450B may be spaced apart from each other along the first direction X. The third and fourth vibration generators 450C and 450D may be spaced apart from each other in the first direction X and may be spaced apart from each of the first and second vibration generators 450A and 450B along the second direction Y. The first and third vibration generators 450A and 450C may be spaced apart from each other along the second direction Y to face each other. The second and fourth vibration generators 450B and 450D may be spaced apart from each other along the second direction Y to face each other.
Each of the first to fourth vibration generators 450A to 450D according to an embodiment of the present disclosure may include a piezoelectric vibration portion 453, a first electrode portion E1, and a second electrode portion E2.
The piezoelectric vibration portion 453 may include a ceramic-based material capable of realizing a relatively high vibration. For example, the piezoelectric vibration portion 453 may include a 1-3 composite structure having a piezoelectric characteristic of a 1-3 vibration mode or a 2-2 composite structure having a piezoelectric characteristic of a 2-2 vibration mode. For example, the piezoelectric vibration portion 453 may include the first portions 453a and the second portion 453b similar to the piezoelectric vibration portion 453 described above with reference to
The first electrode portion E1 may be disposed at a first surface of the piezoelectric vibration portion 453 and may be electrically connected to the first surface of the piezoelectric vibration portion 453. For example, the first electrode portion E1 may be substantially the same as the first electrode portion E1 described above with reference to
The second electrode portion E2 may be disposed at a second surface of the piezoelectric vibration portion 453, and may be electrically connected to the second surface of the piezoelectric vibration portion 453. For example, the second electrode portion E2 may be substantially the same as the second electrode portion E2 described above with reference to
The piezoelectric vibration portion 453 according to an embodiment of the present disclosure, as described above with reference to
The vibration device 450 according to another embodiment of the present disclosure may further include a first protection member 456 and a second protection member 457.
The first protection member 456 may be disposed on the first surface of the vibration device 450. For example, the first protection member 456 may cover the first electrode portion E1 disposed on a first surface of each of the plurality of vibration generators 450A to 450D. Thus, the first protection member 456 may be connected to the first surface of each of the plurality of vibration generators 450A to 450D in common or may support the first surface of each of the plurality of vibration generators 450A to 450D in common. Accordingly, the first protection member 456 may protect the first surface of each of the plurality of vibration generators 450A to 450D or the first electrode portion E1.
According to an embodiment of the present disclosure, a first adhesive layer 454 may be disposed between the first protection member 456 and each of the plurality of vibration generators 450A to 450D. For example, the first protection member 456 may be disposed at the first surface of each of the plurality of vibration generators 450A to 450D by the first adhesive layer 454. For example, the first protection member 456 may be directly disposed at the first surface of each of the plurality of vibration generators 450A to 450D by a film laminating process using the first adhesive layer 454. Accordingly, the plurality of vibration generators 450A to 450D may be integrated (or disposed) or tiled with the first protection member 456 to have the certain intervals D1 and D2.
The second protection member 457 may be disposed on the second surface of the vibration device 450. For example, the second protection member 457 may cover the second electrode portion E2 disposed on a second surface of each of the plurality of vibration generators 450A to 450D. Thus, the second protection member 457 may be connected to the second surface of each of the plurality of vibration generators 450A to 450D in common or may support the second surface of each of the plurality of vibration generators 450A to 450D in common. Accordingly, the second protection member 457 may protect the second surface of each of the plurality of vibration generators 450A to 450D or the second electrode portion E2.
According to an embodiment of the present disclosure, a second adhesive layer 455 may be disposed between the second protection member 457 and each of the plurality of vibration generators 450A to 450D. For example, the second protection member 457 may be disposed at the second surface of each of the plurality of vibration generators 450A to 450D by the second adhesive layer 455. For example, the second protection member 457 may be directly disposed at the second surface of each of the plurality of vibration generators 450A to 450D by a film laminating process by the second adhesive layer 455. Accordingly, the plurality of vibration generators 450A to 450D may be integrated (or disposed) or tiled with the second protection member 457 to have the certain intervals D1 and D2.
Each of the first protection member 456 and the second protection member 457 according to an embodiment of the present disclosure may include a plastic material, a fiber material, or a wood material. Any one of the first protection member 456 and the second protection member 457 may be attached or coupled to the display device by an adhesive member.
The first adhesive layer 454 may be disposed at the first surface of each of the plurality of vibration generators 450A to 450D, and between the plurality of vibration generators 450A to 450D. For example, the first adhesive layer 454 may be formed at a rear surface (or an inner surface) of the first protection member 456 facing the first surface of the vibration device 450, disposed at the first surface of each of the plurality of vibration generators 450A to 450D, and filled between the plurality of vibration generators 450A to 450D.
The second adhesive layer 455 may be disposed at the second surface of each of the plurality of vibration generators 450A to 450D, and between the plurality of vibration generators 450A to 450D. For example, the second adhesive layer 455 may be formed at a front surface (or an inner surface) of the second protection member 457 facing the second surface of the vibration device 450, disposed at the second surface of each of the plurality of vibration generators 450A to 450D, and filled between the plurality of vibration generators 450A to 450D.
The first and second adhesive layers 454 and 455 may be connected or coupled to each other between the plurality of vibration generators 450A to 450D. Therefore, each of the plurality of vibration generators 450A to 450D may be surrounded by the first and second adhesive layers 454 and 455. For example, the first and second adhesive layers 454 and 455 may entirely surround the whole plurality of vibration generators 450A to 450D. For example, the plurality of vibration generators 450A to 450D may be embedded between the first and second adhesive layers 454 and 455. For example, the first and second adhesive layers 454 and 455 may be referred to as a cover member, but embodiments of the present disclosure are not limited thereto. When the first and second adhesive layers 454 and 455 are a cover member, the first protection member 456 may be disposed at a first surface of the cover member, and the second protection member 457 may be disposed at a second surface of the cover member.
Each of the first and second adhesive layers 454 and 455 according to an embodiment of the present disclosure may include an electric insulating material which has adhesiveness and is capable of compression and decompression. For example, each of the first and second adhesive layers 454 and 455 may include an epoxy resin, an acryl resin, a silicone resin, or a urethane resin, but embodiments of the present disclosure are not limited thereto. For example, each of the first and second adhesive layers 454 and 455 may be configured to be transparent, semitransparent, or opaque according to the location of the vehicle where the vibration device 450 is disposed.
The vibration device 450 according to another embodiment of the present disclosure may further include a first power supply line PL1 disposed at the first protection member 456, a second power supply line PL2 disposed at the second protection member 457, and a pad part 458 electrically connected to the first power supply line PL1 and the second power supply line PL2.
The first power supply line PL1 may be disposed at a rear surface of the first protection member 456 facing the first surface of the vibration device 450. The first power supply line PL1 may be electrically connected to the first electrode portion E1 of each of the plurality of vibration generators 450A to 450D. For example, the first power supply line PL1 may be directly and electrically connected to the first electrode portion E1 of each of the plurality of vibration generators 450A to 450D. For example, the first power supply line PL1 may be electrically connected to the first electrode portion E1 of each of the plurality of vibration generators 450A to 450D by an anisotropic conductive film. As another example of the present disclosure, the first power supply line PL1 may be electrically connected to the first electrode portion E1 of each of the plurality of vibration generators 450A to 450D by a conductive material (or particle) included in the first adhesive layer 454.
The first power supply line PL1 according to an embodiment of the present disclosure may include first and second upper power lines PL11 and PL12 disposed along a second direction Y. For example, the first upper power line PL11 may be electrically connected to the first electrode portion E1 of each of the first and third vibration generators 450A and 450C (or a first group or a first array group) arranged at a first column parallel to the second direction Y among the plurality of vibration generators 450A to 450D. The second upper power line PL12 may be electrically connected to the first electrode portion E1 of each of the second and fourth vibration generators 450B and 450D (or a second group or a second array group) arranged at a second column parallel to the second direction Y among the plurality of vibration generators 450A to 450D.
The second power supply line PL2 may be disposed at a front surface of the second protection member 457 facing the second surface of the vibration device 450. The second power supply line PL2 may be electrically connected to the second electrode portion E2 of each of the plurality of vibration generators 450A to 450D. For example, the second power supply line PL2 may be directly and electrically connected to the second electrode portion E2 of each of the plurality of vibration generators 450A to 450D. For example, the second power supply line PL2 may be electrically connected to the second electrode portion E2 of each of the plurality of vibration generators 450A to 450D by an anisotropic conductive film. As another example, the second power supply line PL2 may be electrically connected to the second electrode portion E2 of each of the plurality of vibration generators 450A to 450D by a conductive material (or particle) included in the second adhesive layer 455.
The second power supply line PL2 according to an embodiment of the present disclosure may include first and second lower power lines PL21 and PL22 disposed along a second direction Y. For example, the first lower power line PL21 may be electrically connected to the second electrode portion E2 of each of the first and third vibration generators 450A and 450C (or a first group or a first array group) arranged at the first column parallel to the second direction Y among the plurality of vibration generators 450A to 450D. The second lower power line PL22 may be electrically connected to the second electrode portion E2 of each of the second and fourth vibration generators 450B and 450D (or a second group or a second array group) arranged at the second column parallel to the second direction Y among the plurality of vibration generators 450A to 450D.
The pad part 458 may be disposed at the vibration device 450 so as to be electrically connected to one portion (or one end or one side) of at least one or more among the first power supply line PL1 and the second power supply line PL2. The pad part 458 according to an embodiment of the present disclosure may include a first pad electrode electrically connected to one portion of the first power supply line PL1 and a second pad electrode electrically connected to one portion of the second power supply line PL2.
The first pad electrode may be connected to one portion of each of the first and second upper power lines PL11 and PL12 of the first power supply line PL1. For example, the one portion of each of the first and second upper power lines PL11 and PL12 may branch from the first pad electrode.
The second pad electrode may be connected to one portion of each of the first and second lower power lines PL21 and PL22 of the second power supply line PL2. For example, the one portion of each of the first and second lower power lines PL21 and PL22 may branch from the second pad electrode.
According to an embodiment of the present disclosure, each of the first power supply line PL1, the second power supply line PL2, and the pad part 358 may be configured to be a transparent conductive material, a semitransparent conductive material, or an opaque conductive material so as to be transparent, translucent, or opaque.
The vibration device 450 according to another embodiment of the present disclosure may further include a flexible cable 459.
The flexible cable 459 may be electrically connected to the pad part 458 disposed at the vibration device 450 and may supply the vibration device 450 with one or more vibration driving signals (or a sound signal) provided from a sound processing circuit. The flexible cable 459 according to an embodiment of the present disclosure may include a first terminal electrically connected to the first pad electrode of the pad part 458 and a second terminal electrically connected to the second pad electrode of the pad part 458. For example, the flexible cable 459 may be a flexible printed circuit cable or a flexible flat cable, but embodiments of the present disclosure are not limited thereto.
The sound processing circuit may generate an alternating current (AC) vibration driving signal including a first vibration driving signal and a second vibration driving signal based on a sound source. The first vibration driving signal may be one of a positive (+) vibration driving signal and a negative (−) vibration driving signal, and the second vibration driving signal may be one of a positive (+) vibration driving signal and a negative (−) vibration driving signal. For example, the first vibration driving signal may be supplied to the first electrode portion E1 of each of the plurality of vibration generators 450A to 450D through a first terminal of the flexible cable 459, the first pad electrode of the pad part 458, and the first power supply line PL1. The second vibration driving signal may be supplied to the second electrode portion E2 of each of the plurality of vibration generators 450A to 450D through a second terminal of the flexible cable 459, the second pad electrode of the pad part 458, and the second power supply line PL2.
Therefore, the vibration device 450 according to an embodiment of the present disclosure may include the plurality of vibration generators 450A to 450D which are arranged (or tiled) at a certain interval D1 and D2 so as to be implemented as a single vibrator without being independently driven, and thus, may be driven as a large-area vibrator based on a single-body vibration of the plurality of vibration generators 450A to 450D. Accordingly, a large area of display device may vibrate or vibrate by itself in a large-area, thereby increasing or enhancing a sound characteristic and a sound pressure level characteristic in the low-pitched sound band and a reproduction band of a sound output from the display device.
With reference to
A vibration device according to an embodiment of the present disclosure may be applied to a vibration device disposed at a display apparatus. The display apparatus according to an embodiment of the present disclosure may be applied to mobile apparatuses, video phones, smart watches, watch phones, wearable apparatuses, foldable apparatuses, rollable apparatuses, bendable apparatuses, flexible apparatuses, curved apparatuses, electronic organizers, electronic books, portable multimedia players (PMPs), personal digital assistants (PDAs), MP3 players, mobile medical apparatuses, desktop personal computers (PCs), laptop PCs, netbook computers, workstations, navigation apparatuses, automotive navigation apparatuses, automotive display apparatuses, automotive apparatuses, theater apparatuses, theater display apparatuses, TVs, wall paper display apparatuses, signage apparatuses, game machines, notebook computers, monitors, cameras, camcorders, home appliances, etc. Also, the vibration device according to the present disclosure may be applied to organic light emitting lighting apparatuses or inorganic light emitting lighting apparatuses. When the vibration device of the present disclosure is applied to lighting apparatuses, the vibration device may act as lighting and a speaker. Also, when the display apparatus of the present disclosure is applied to a mobile device, the vibration device may act as one or more of a speaker, a receiver, and a haptic, but embodiments of the present disclosure are not limited thereto.
A display apparatus according to an embodiment of the present disclosure will be described below.
A display apparatus according to an embodiment of the present disclosure may include a display device including a display panel configured to display an image and include first to sixth regions, at least one first vibration device and at least one second vibration device respectively at the first region and the second region, at least one third vibration device, at least one fourth vibration devices, and at least one fifth vibration device respectively at the fourth to sixth regions, a first partition between the first region and the third region, a second partition between the second region and the third region, a third partition between the fourth region and the sixth region, and a fourth partition between the fifth region and the sixth region. A length of one or more among the first partition and the second partition may differ from a length of one or more among the third partition and the fourth partition. A length of one or more among the first partition and the second partition at one side of any of the at least one first and second vibration devices may differ from a length of one or more among the third partition and the fourth partition at one side of any of the at least one third to fifth vibration devices.
According to some embodiments of the present disclosure, a length of one or more among the first partition and the second partition may be smaller than a length of one or more among the third partition and the fourth partition. According to some embodiments of the present disclosure, a length of one or more among the first partition and the second partition at one side of any of the at least one first and second vibration devices may be smaller than a length of one or more among the third partition and the fourth partition at one side of any of the at least one third to fifth vibration devices.
According to some embodiments of the present disclosure, a length of one or more among the first partition and the second partition may be greater than a length of one or more among the third partition and the fourth partition. According to some embodiments of the present disclosure, a length of one or more among the first partition and the second partition at one side of any of the at least one first and second vibration devices may be greater than a length of one or more among the third partition and the fourth partition at one side of any of the at least one third to fifth vibration devices.
According to some embodiments of the present disclosure, the at least one first vibration device and the at least one second vibration device may be the same vibration devices.
According to some embodiments of the present disclosure, the at least one first vibration device and the at least one second vibration device may be configured with a coil type vibration device or a film type vibration device.
According to some embodiments of the present disclosure, the at least one third vibration device and the at least one fourth vibration device may be the same vibration devices.
According to some embodiments of the present disclosure, the at least one third vibration device and the at least one fourth vibration device may be configured with a coil type vibration device or a woofer-integrated vibration device.
According to some embodiments of the present disclosure, the woofer-integrated vibration device may comprise a first vibration generating part disposed at a rear surface of the display panel and a second vibration generating part spaced apart from the rear surface of the display panel.
According to some embodiments of the present disclosure, the first vibration generating part may be configured to output a sound of a middle-high-pitched sound band to a forward region, and the second vibration generating part may be configured to output a sound of a low-pitched sound band to a forward region and a rearward region.
According to some embodiments of the present disclosure, one or more among the at least one first vibration device and the at least one second vibration device may be configured with a vibration device which differs from one or more among the at least one third vibration device, the at least one fourth vibration device, and the at least one fifth vibration device.
According to some embodiments of the present disclosure, one or more among the at least one first vibration device and the at least one second vibration device may be configured with a coil type vibration device or a film type vibration device, and one or more among the at least one third vibration device, the at least one fourth vibration device, and the at least one fifth vibration device may be configured with a coil type vibration device or a woofer-integrated vibration device.
According to some embodiments of the present disclosure, the display apparatus may further include one or more among one or more pad portions and one or more bent portions, one or more among the one or more pad portions and the one or more bent portions may be disposed at sides of one or more among the first to fourth partitions toward one or more among the at least one first to fifth vibration devices.
According to some embodiments of the present disclosure, the display apparatus may further include one or more pad portions, the one or more pad portions may be disposed at sides facing sides of one or more among the first to fourth partitions toward one or more among the at least one first to fifth vibration devices.
According to some embodiments of the present disclosure, the display apparatus may further include a fifth partition between the first to third regions and the fourth to sixth regions, and a sixth partition under the fourth to sixth regions.
According to some embodiments of the present disclosure, the display apparatus may further include one or more among one or more pad portions and one or more bent portions, one or more among the one or more pad portions and the one or more bent portions may be disposed at sides of one or more of the fifth partition and the sixth partition toward one or more among the at least one first to fifth vibration devices.
According to some embodiments of the present disclosure, the display apparatus may further include an eighth partition and a ninth partition, the eighth partition may be disposed to surround the at least one first vibration device and may be configured to be smaller than a size of the first partition and the fifth partition at one side of the at least one first vibration device, and the ninth partition may be disposed to surround the at least one second vibration device and may be configured to be smaller than a size of the second partition and the fifth partition at one side of the at least one second vibration device.
According to some embodiments of the present disclosure, the display apparatus may further include a fifth partition between the first to third regions and the fourth to sixth regions, and a seventh partition surrounding a periphery of the display device.
According to some embodiments of the present disclosure, the display apparatus may further include one or more among one or more pad portions and one or more bent portions, one or more among the one or more pad portions and the one or more bent portions may be disposed at sides of one or more among the fifth and seventh partitions toward one or more among the at least one first to fifth vibration devices.
According to some embodiments of the present disclosure, a size of the third region may differ from a size of the first region and the second region.
According to some embodiments of the present disclosure, a size of the fourth to sixth regions may be the same to each other.
According to some embodiments of the present disclosure, a size of the first region may differ from a size of the fourth region, and a size of the second region may differ from a size of the fifth region.
According to some embodiments of the present disclosure, each of the at least one first to fifth vibration devices may be independently driven and vibrates the display device to generate a vibration.
According to some embodiments of the present disclosure, the display apparatus may further include a heat dissipation member at a rear surface of the display device, and an adhesive member between the display device and the heat dissipation member.
According to some embodiments of the present disclosure, one or more among the at least one first to fifth vibration devices may be configured with a coil type vibration device, the coil type vibration device may include a magnet on a plate, a bobbin near the magnet, and a coil around the bobbin, and the display apparatus may further include a heat dissipation member at a rear surface of the display device, a first adhesive member between the display device and the heat dissipation member, and a second adhesive member between the heat dissipation member and the bobbin.
According to some embodiments of the present disclosure, one or more among the at least one first to fifth vibration devices may be configured with a coil type vibration device, the coil type vibration device may include a magnet on a plate, a bobbin near the magnet, and a coil around the bobbin, and the display apparatus may further include a supporting member at a rear surface of the display device, and a structure at a rear surface of the supporting member, and one or more among the at least one first to fifth vibration devices may be disposed at the structure.
According to some embodiments of the present disclosure, the one or more among the first to fifth vibration devices disposed at the structure may be provided as a single-body structure with the structure.
According to some embodiments of the present disclosure, the one or more among the first to fifth vibration devices disposed at the structure may be asymmetrically disposed with respect to the structure.
According to some embodiments of the present disclosure, one or more among at least one first to fifth vibration devices may configured with a film type vibration device, and the film type vibration device may include a plurality of inorganic material portions having a piezoelectric characteristic, and an organic material portion between the plurality of inorganic material portions.
According to some embodiments of the present disclosure, the first region, the second region, and the third region may be disposed at an upper portion of the display device, and the third region may disposed between the first region and the second region, and the fourth to sixth regions may be disposed at a lower portion of the first to third regions, and the sixth region may be disposed between the fourth region and the fifth region.
According to an embodiment of the present disclosure, a display apparatus may include a display device including a display panel configured to display an image and include first to sixth regions, at least one first vibration device and at least one second vibration device respectively at the first region and the second region, at least one third vibration device, at least one fourth vibration devices, and at least one fifth vibration device respectively at the fourth to sixth regions, a first partition at one or more sides of the at least one first vibration device, a second partition at one or more sides of the at least one second vibration device, a third partition at one or more sides of the at least one third vibration device, and a fourth partition at one or more sides of the at least one fourth vibration device. A size of one or more among the first partition and the second partition may differ from a size of one or more among the third partition and the fourth partition. A size of one or more among the first partition and the second partition at one side of any of the at least one first and second vibration devices may differ from a size of one or more among the third partition and the fourth partition at one side of any of the at least one third to fifth vibration devices.
According to some embodiments of the present disclosure, a size of one or more among the first partition and the second partition may be smaller than a size of one or more among the third partition and the fourth partition. According to some embodiments of the present disclosure, a size of one or more among the first partition and the second partition at one side of any of the at least one first and second vibration devices may be smaller than a size of one or more among the third partition and the fourth partition at one side of any of the at least one third to fifth vibration devices.
According to some embodiments of the present disclosure, a size of one or more among the first partition and the second partition may be greater than a size of one or more among the third partition and the fourth partition. According to some embodiments of the present disclosure, a size of one or more among the first partition and the second partition at one side of any of the at least one first and second vibration devices may be greater than a size of one or more among the third partition and the fourth partition at one side of any of the at least one third to fifth vibration devices.
According to some embodiments of the present disclosure, the display apparatus may further include one or more among one or more pad portions and one or more bent portions, one or more among the one or more pad portions and the one or more bent portions may be disposed at sides of one or more of the first to fourth partitions toward one or more among the at least one first to fifth vibration devices.
According to some embodiments of the present disclosure, the display apparatus may further include one or more pad portions, the one or more pad portions may be disposed at sides facing sides of one or more among the first to fourth partitions toward one or more among the at least one first to fifth vibration devices.
According to some embodiments of the present disclosure, the display apparatus may further include a fifth partition at sides of one or more among the at least one first vibration device and the at least one second vibration device, and a sixth partition at sides of one or more among the at least one third vibration device and the at least one fourth vibration device, a size of the fifth partition may be smaller than a size of the sixth partition.
According to some embodiments of the present disclosure, the display apparatus may further include a fifth partition at sides of one or more among the at least one first vibration device and the at least one second vibration device, and a sixth partition at sides of one or more among the at least one third vibration device and the at least one fourth vibration device, a size of the fifth partition at one side of any of the at least one first vibration device and the at least one second vibration device may be smaller than a size of the sixth partition at one side of any of the at least one third vibration device and the at least one fourth vibration device.
According to some embodiments of the present disclosure, the display apparatus may further include one or more among one or more pad portions and one or more bent portions, one or more among the one or more pad portions and the one or more bent portions may be disposed at sides of one or more among the fifth partition and the sixth partition toward one or more among the at least one first to fifth vibration devices.
According to some embodiments of the present disclosure, the display apparatus may further include a fifth partition at sides of one or more among the at least one first vibration device and the at least one second vibration device, and a sixth partition at sides of one or more among the at least one third vibration device and the at least one fourth vibration device, a size of the fifth partition may be greater than a size of the sixth partition.
According to some embodiments of the present disclosure, the display apparatus may further include a fifth partition at sides of one or more among the at least one first vibration device and the at least one second vibration device, and a sixth partition at sides of one or more among the at least one third vibration device and the at least one fourth vibration device, a size of the fifth partition at one side of any of the at least one first vibration device and the at least one second vibration device may be greater than a size of the sixth partition at one side of any of the at least one third vibration device and the at least one fourth vibration device.
According to some embodiments of the present disclosure, the display apparatus may further include one or more among one or more pad portions and one or more bent portions, one or more among the one or more pad portions and the one or more bent portions may be disposed at sides of one or more among the fifth partition and the sixth partition toward one or more among the at least one first to fifth vibration devices.
According to some embodiments of the present disclosure, a size of one or more among the third partition and the fourth partition may be the same as a size of one or more among the fifth partition and the sixth partition.
According to some embodiments of the present disclosure, a size of one or more among the third partition at one side of any of the at least one first vibration device and the at least one second vibration device and the fourth partition may be the same as a size of one or more among the fifth partition and the sixth partition at one side of any of the at least one third vibration device and the at least one fourth vibration device.
According to some embodiments of the present disclosure, the fifth partition and the sixth partition may be further disposed at one or more sides of the at least one fifth vibration device, a size of one or more among the fifth partition and the sixth partition at one or more sides of the at least one fifth vibration device may be greater than a size of one or more among the first partition and the fifth partition at one or more sides of the at least one first vibration device and may be greater than a size of one or more among the second partition and the fifth partition at one or more sides of the at least one second vibration device.
According to some embodiments of the present disclosure, the fifth partition and the sixth partition may be further disposed at one or more sides of the at least one fifth vibration device, a size of one or more among the fifth partition and the sixth partition at one or more sides of the at least one fifth vibration device may be smaller than a size of one or more among the first partition and the fifth partition at one or more sides of the at least one first vibration device and may be smaller than a size of one or more among the second partition and the fifth partition at one or more sides of the at least one second vibration device.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the technical idea or scope of the disclosures. Thus, it may be intended that the embodiments of present disclosure cover the modifications and variations of the disclosure provided they come within the scope of the appended claims and their equivalents.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2020-0080569 | Jun 2020 | KR | national |
This application is a continuation application of application Ser. No. 17/360,367, filed on Jun. 28, 2021, which claims the benefit of and priority to Korean Patent Application No. 10-2020-0080569 filed on Jun. 30, 2020, the entirety of each of which is hereby incorporated by reference.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 17360367 | Jun 2021 | US |
| Child | 18190919 | US |
