Patent Application
20210358465
The present application claims the priority of the Chinese patent application No. 201810038446.1 filed on Jan. 15, 2018, the entire disclosure of which is incorporated herein by reference.
The present disclosure generally relates to the technical field of audio-visual devices, and specifically to a display panel and a display device comprising the display panel, both of which are in particular adapted for use in an audio-visual device.
In traditional audio-visual devices, most sound-producing devices are composed of loudspeakers. However, using loudspeakers as a sound-producing device is unfavorable to the development trend of audio-visual devices towards miniaturization and thinness.
According to an aspect of the present disclosure, a display panel is provided. The display panel comprises: a display panel body; a drive membrane on the display panel body, one or more conductive traces being provided within the drive membrane; and a magnet structure on a side of the drive membrane facing away from the display panel body, the magnet structure being configured for generating a magnetic field. Specifically, the drive membrane is configured to deform under an interaction between the magnetic field and a modulation current applied onto the one or more conductive traces, thereby driving the display panel body to vibrate and produce sounds.
According to a specific implementation, in an embodiment of the present disclosure, the display panel further comprises: an interlayer between the drive membrane and the magnet structure.
According to a specific implementation, in the display panel provided by an embodiment of the present disclosure, the interlayer further comprises an elastic structure.
According to a specific implementation, in the display panel provided by an embodiment of the present disclosure, the display panel body is made of a flexible material.
According to a specific implementation, in the display panel provided by an embodiment of the present disclosure, the magnet structure comprises a plurality of magnet units in a Halbach array.
According to a specific implementation, in the display panel provided by an embodiment of the present disclosure, the plurality of magnet units are evenly distributed in the magnet structure and configured to generate a one-sided magnetic field at a side of the magnet structure facing the drive membrane, wherein the one-sided magnetic field comprises one or more sub-magnetic fields, and an extension direction of each conductive trace is perpendicular to a magnetic line of force of a corresponding sub-magnetic field.
According to a specific implementation, in the display panel provided by an embodiment of the present disclosure, the plurality of magnet units are distributed at a perimeter of the magnet structure and configured to generate a magnetic field in a central part of the magnet structure, wherein the magnetic field comprises one or more sub-magnetic fields, and an extension direction of each conductive trace is perpendicular to a magnetic line of force of a corresponding sub-magnetic field.
According to a specific implementation, in the display panel provided by an embodiment of the present disclosure, the display panel, the drive membrane and the conductive traces are all made of a transparent material.
According to a specific implementation, in the display panel provided by an embodiment of the present disclosure, the display panel has a thickness smaller than or equal to 1 mm.
According to a specific implementation, in the display panel provided by an embodiment of the present disclosure, the drive membrane has a thickness smaller than or equal to 0.5 mm.
According to another aspect of the present disclosure, a display device is further provided. The display device comprises the display panel as described in any of the above embodiments.
By reading detailed depictions of the non-restrictive embodiments as made with reference to the drawings, other features, goals and advantages of the present application will be more obvious, wherein:
and
The present application will be further explained in detail in combination with the drawings and the embodiments. It can be understood that the specific embodiments depicted herein are only used for explaining the present invention, instead of limiting the present invention. Besides, it should be further noted that in order to facilitate depictions, only portions related to the present invention are shown in the drawings.
It should be noted that embodiments in the present application and features of the embodiments can be combined with each other unless there is a conflict. The present application will be explained in detail with reference to the drawings and the embodiments.
Referring to
As can be seen, in an embodiment of the present disclosure, the display panel body 101 can produce sounds by vibrations. In this case, when the display panel according to an embodiment of the present disclosure is used in an audio-visual device, there is no need anymore for arranging any speakers additionally in the audio-visual device, because the display panel body can serve as a sound-producing device by itself. Obviously, this will promote the development of audio-visual devices towards miniaturization and thinness.
In some embodiments, an interlayer 104 can be further formed between the drive membrane 102 and the magnet structure 103. Usually, the magnet structure 103 in use can be made of a rigid material. In this case, for the purpose of avoiding influences on the effect of sound production by vibration of the display panel body, a certain distance is finally maintained between the magnet structure 103 and the drive membrane 102. To this end, an interlayer 104 can be disposed between the drive membrane 102 and the magnet structure 103.
In some embodiments, the interlayer 104 between the magnet structure 103 and the drive membrane 102 can be formed by introducing an elastic structure 105. In this case, the elastic structure 105 made of an elastic material can serve as a connector between the magnet structure 103 and the drive membrane 102, which helps to actuate the display panel 101 to vibrate by means of deformation of the drive membrane 102. As an example, the elastic structure 105 can comprise a padding block or a padding strip made of an elastic material.
In some embodiments, the display panel body 101 can be made of a flexible material, so as to ensure a good vibration effect.
In some embodiments, the magnet structure 103 can comprise a plurality of magnet units, and the magnet units can be arranged in a Halbach array. The Halbach array that can be used in embodiments of the present disclosure will be illustrated with reference to
Firstly, referring to
Next, referring to
In some embodiments, the magnet units are evenly distributed in the magnet structure, and thus a one-sided magnetic field is generated at a side of the magnet structure facing the drive membrane. Specifically, the one-sided magnetic field comprises several sub-magnetic fields, and an extension direction of each conductive trace is perpendicular to a magnetic line of force of a corresponding sub-magnetic field. Detailed depictions will be given with reference to
In some embodiments, the magnet units are distributed at a perimeter of the magnet structure, thereby generating a magnetic field in a central part of the magnet structure. In this case, the magnetic field can comprise several sub-magnetic fields, and an extension direction of each conductive trace is perpendicular to a magnetic line of force of a corresponding sub-magnetic field. As an example, in the current embodiment, the magnet units can be distributed at a perimeter of the magnet structure, thereby forming an annular magnet structure.
An annular magnet structure in the display panel according to an embodiment of the present disclosure will be explained in detail in combination with
As an example, the magnet units 601 can be arranged as shown in
Next, referring to
In some embodiments, the display panel, the drive membrane and the conductive traces are all made of a transparent material. When the display panel, the drive membrane and the conductive traces are all made of a transparent material, the magnet structure can be the annular magnet structure as shown in
In some embodiments, the display panel has a thickness smaller than or equal to 1 mm. In order to achieve a better effect of sound generation, the thickness of the display panel is preferably thin, for example, smaller than 1 mm. Suitable display panels include but are not limited to the following. For example, they can be an OLED display panel of a bottom-emission structure, an OLED display panel of a top-emission structure, a transparent Passive Matrix OLED (PMOLED) display panel or a transparent Active Matrix OLED (AMOLED) display panel.
In some embodiments, the drive membrane has a thickness smaller than or equal to 0.5 mm. Available materials of the drive membrane include but are not limited to the following. For example, they can be Polypropylene (PP), Polyethylene terephthalate (PET), polyvinyl chloride (PVC), Polycarbonate (PC), polyimide (PI) and so on.
The present invention further provides a display device. The display device comprises the display panel provided in any of the above embodiments.
Furthermore, in an embodiment of the present disclosure, when the display panel as described above is used to produce sounds in an audio-visual device, a current direction of the corresponding modulation current can be selected based on a direction of the magnetic lines of force in the magnetic field generated by the magnet structure, which ensures that the direction of force on each conductive trace is the same. Accordingly, it is guaranteed that the conductive traces and/or the drive membrane deform in the same direction, thereby actuating the display panel body to vibrate and produce sounds. Besides, a frequency and/or a magnitude of the sound produced can be adjusted by the following procedure. For example, by adjusting a switching frequency of the current direction of the modulation current, a switching frequency of the direction of force on the drive membrane in the magnetic field can be varied, and thus a vibration frequency of the display panel in the magnetic field can be varied and finally the frequency of sound produced can be adjusted. As another example, by adjusting a current magnitude of the modulation current, a magnitude of force on the drive membrane in the magnetic field can be varied, and thus a amplitude of vibration of the display panel in the magnetic field can be varied and the magnitude of sound produced can be adjusted.
As an example, in
Flow charts and diagrams in the drawings only illustrate possible systematic architectures, functions and operations that can be implemented by the system, the method and the computer program product according to various embodiments of the present disclosure. In this regard, each box in the flow charts or the diagrams can represent a module, a program segment or a portion of codes, and the module, the program segment or the portion of codes comprises one or more executable instructions for implementing prescribed logic functions. It should be further noted that in some alternative implementations, the functions indicated in the boxes can also be performed in a sequence different from that indicated in the drawings. For example, two consecutive boxes can actually be executed substantially concurrently, and sometimes they can also be executed in an opposite sequence, which depends on the functions involved. Besides, it should be noted that each box in the diagrams and/or the flow charts, and a combination of the boxes in the diagrams and/or the flow charts can be implemented by means of a hardware-based system dedicated for executing the prescribed functions or operations, or by means of a combination of dedicated hardware and computer instructions.
What is described above is only preferred embodiments of the present application and explanations of the employed technical principles. Those skilled in the art should understand that the inventive scope of the present application is not limited by the technical solutions formed by a specific combination of the above technical features. Instead, it should also cover other technical solutions formed by a random combination of the above technical feature or equivalent features without deviating from the inventive concept. For example, the present application can comprise technical solutions formed by replacing the above features with technical features having similar functions as disclosed in the present application, but not limited thereto.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201810038446.1 | Jan 2018 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2018/109295 | 10/8/2018 | WO | 00 |
