Patent Application
20200400999
The present disclosure relates to a display device.
As the information society develops, the demand for display devices is also increasing in various forms, and in response to this, various display devices such as a liquid crystal display device (LCD), a plasma display panel (PDP), an electroluminescent display (ELD), and a vacuum fluorescent display (VFD) have been researched and used.
Among them, a liquid crystal panel of the LCD may include a liquid crystal layer and a TFT substrate and a color filter substrate facing each other with the liquid crystal layer interposed therebetween, and may display images using light provided from a backlight unit.
The present disclosure aims to solve the above-mentioned problems and other problems. Another object may be to improve durability of the display device.
Another object may be to improve convenience of assembling of the display device.
Another object may be to improve reliability of a light source of the display device.
According to an embodiment of the present disclosure for achieving the above object, the present disclosure provides a display device including a display panel; a substrate positioned behind the display panel; a plurality of light sources mounted on the substrate and providing light to the display panel; a reflective sheet positioned on the substrate, and having a plurality of holes formed corresponding to positions of the plurality of light sources and a coupling hole formed between the plurality of holes; and a body fixed to the substrate as a supporter fixed to the substrate and inserted into the coupling hole; and a supporter including a guide that gradually tapers and extends from an upper side of the body toward the display panel, wherein the body of the supporter is a cylinder shape corresponding to the coupling hole, and the guide of the supporter includes a guide inclined surface extending from a side surface of the body.
In addition according to another aspect of the present disclosure, the guide inclined surface may be smoothly extended to the side surface of the body.
In addition according to another aspect of the present disclosure, the guide of the supporter may include a center of the guide forming an upper end; a first guide inclined surface extending from the center of the guide to the side surface of the body; a second guide inclined surface extending from the center of the guide to the side surface of the body; a third guide inclined surface extending from the center of the guide to the side surface of the body; and, a fourth guide inclined surface extending from the center of the guide to the side surface of the body.
In addition according to another aspect of the present disclosure, the first guide inclined surface and the third guide inclined surface may be symmetrical with respect to the center of the guide, and the second guide inclined surface and the fourth guide inclined surface may be symmetrical with respect to the center of the guide.
In addition according to another aspect of the present disclosure, the body of the supporter may include a first body side surface extending from the first guide inclined surface and connecting an upper end and a lower end of the body; a second body side surface extending from the second guide inclined surface and connecting the upper end and the lower end of the body; a third body side surface extending from the third guide inclined surface and connecting the upper end and the lower end of the body; and a fourth body side surface extending from the fourth guide inclined surface and connecting the upper end and the lower end of the body.
In addition according to another aspect of the present disclosure, the body may include a first body groove positioned between the first body side surface and the second body side surface and formed by being recessed inside the body.
In addition according to another aspect of the present disclosure, the body may include a second body groove positioned between the first body side surface and the second body side surface, formed by being recessed inside the body, and being vertically adjacent to the first body groove.
In addition according to another aspect of the present disclosure, the body may include a third body groove positioned between the third body side surface and the fourth body side surface and formed by being recessed inside the body.
In addition according to another aspect of the present disclosure, the body may include a fourth body groove positioned between the third body side surface and the fourth body side surface, formed by being recessed inside the body, and being vertically adjacent to the third body groove.
In addition according to another aspect of the present disclosure, the guide may have elasticity.
Description of effects of the display device according to the present disclosure is as follows.
According to at least one of the embodiments of the present disclosure, it is possible to improve durability of the display device.
According to at least one of the embodiments of the present disclosure, it is possible to improve reliability of a light source of the display device.
According to at least one of the embodiments of the present disclosure, it is possible to improve convenience of assembling of the display device.
Additional scope of applicability of the present disclosure will become apparent from the following detailed description. However, various changes and modifications within the spirit and scope of the present disclosure may be clearly understood by those skilled in the art, and thus, it should be understood that specific embodiments, such as the detailed description and preferred embodiments of the present disclosure, are given only by way of illustration.
Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, however, the same or similar elements are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted.
The suffixes “module” and “part” for components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. Further, in describing the embodiments disclosed in the present disclosure, when it is determined that the detailed description of the related art is likely to blur the gist of the embodiment disclosed in the present disclosure, a detailed description thereof will be omitted. Also, the accompanying drawings are only for the purpose of easily understanding the embodiments disclosed in the present disclosure, and the technical idea disclosed in the present disclosure is not limited by the accompanying drawings, it should be understood that the present disclosure include all modifications, equivalents and substitutes included within the spirit and technical scope of the present disclosure.
Hereinafter, a liquid crystal display (LCD) will be described as an example of a display panel, but the display panel applicable to the present disclosure is not limited to the LCD panel, and it may also be a plasma display panel (PDP), a field emission display (FED), or an organic light emitting diode (OLED).
Referring to
Here, it is possible that the first short side area SS1 is referred to as a first side area, the second short side area SS2 is referred to as a second side area opposite the first side area, the first long side area LS1 is referred to as a third side area adjacent to the first side area and the second side area and positioned between the first side area and the second side area, and the second long side area LS2 is referred to as a fourth side area adjacent to the first side area and the second side area and positioned between the first side area and the second side area and opposite the third side area.
In addition, for convenience of description, although lengths of the first and second long sides LS1 and LS2 are longer than lengths of the first and second short sides SS1 and SS2, the lengths of the first and second long sides LS1 and LS2 may be approximately equal to the lengths of the first and second short sides SS1 and SS2.
In addition, hereinafter, a first direction DR1 may be a direction parallel to the short sides SS1 and SS2 of a display device, and a second direction DR2 may be a direction parallel to the long sides LS1 and LS2 of the display device. A third direction DR3 may be a direction perpendicular to the first direction DR1 and/or the second direction DR2. The first direction DR1 and the second direction DR2 may be collectively referred to as a horizontal direction. In addition, the third direction DR3 may be referred to as a vertical direction.
A side where the display device displays images may be referred to as a front side or a front surface. When the display device displays images, a side where the images cannot be observed may be referred to as a back side or a back surface. When looking at the display device from the front side or the front surface, the first long side LS1 may be referred to as a right side or a right surface. Similarly, the second long side LS2 may be referred to as a left side or a left surface. Similarly, the first short side SS1 may be referred to as an upper side or an upper surface, and the second short side SS2 may be referred to as a lower side or a lower surface.
In addition, the first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 may be referred to as edges of the display device. In addition, a point at which the first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 meet each other may be referred to as a corner. For example, a point where the first long side LS1 meets the first short side SS1 may be a first corner C1, a point where the first long side LS1 meets the second short side SS2 may be a second corner C2, a point where the second short side SS2 meets the second long side LS2 may be a third corner C3, and a point where the second long side LS2 meets the first short side SS1 may be a fourth corner C4.
Here, a direction from the first short side SS1 to the second short side SS2 or a direction from the second short side SS2 to the first short side SS1 may be referred to as an up-down direction UD. A direction from the first long side LS1 to the second long side LS2 or a direction from the second long side LS2 to the first long side LS1 may be referred to as a left-right direction LR.
Referring to
The front cover 105 may cover at least some of front and side surfaces of the display panel 110. The front cover 105 may have a rectangular frame shape with an empty center. Since the center of the front cover 105 is empty, images of the display panel 110 may be displayed outside.
The front cover 105 may include a front cover and a side cover. That is, it means that the front cover is positioned on the front surface of the display panel 110 and the side cover is positioned on the side surface of the display panel 110. The front cover and side cover may be configured separately. Either the front cover or the side cover may be omitted.
The display module 100 may include the display panel 110. The display panel 110 is provided on the front surface of the display module 100 and an image may be displayed. The display panel 110 may divide the image into a plurality of pixels and output the image by matching color, brightness, and chroma per pixel. The display panel 110 may be divided into an active area in which an image is displayed and an inactive area in which an image is not displayed. The display panel 110 may include a front substrate and a rear substrate facing each other with a liquid crystal layer interposed therebetween.
The front substrate may include a plurality of pixels composed of red (R), green (G), and blue (B) sub-pixels. The front substrate may generate an image corresponding to red, green, or blue color according to a control signal.
The rear substrate may include switching elements. The rear substrate may switch a pixel electrode. For example, the pixel electrode may change molecular arrangement of the liquid crystal layer according to a control signal applied from the outside. The liquid crystal layer may include a plurality of liquid crystal molecules. The liquid crystal molecules may change an arrangement in correspondence to a voltage difference generated between the pixel electrode and a common electrode. The liquid crystal layer may transmit light provided from the backlight unit 120 to the front substrate.
The backlight unit 120 may be positioned on a back surface of the display panel 110. The backlight unit 120 may include a plurality of light sources. The light source of the backlight unit 120 may be arranged as a direct type.
The backlight unit 120 may be coupled to a front side of the frame 130. For example, it means that the plurality of light sources may be disposed on the front side of the frame 130, and in this case, it may be referred to as a direct type of backlight unit.
The backlight unit 120 may be driven by a full driving method or a partial driving method such as local dimming or impulsive. The backlight unit 120 may include an optical sheet 125 and an optical layer 123. The optical layer 123 may be referred to as an optical unit 123.
The optical sheet 125 may allow light from the light source to be evenly transmitted to the display panel 110. The optical sheet 125 may be composed of a plurality of layers. For example, it may include at least one prism sheet and/or at least one diffusion sheet.
The optical sheet 125 may include a coupling part 125d. The coupling part 125d may be coupled to the front cover 105 and/or the frame 130. Alternatively, the coupling part 125d may be coupled to a structure coupled on the front cover 105 and/or the frame 130.
The optical layer 123 may include a light source or the like. The specific configuration of the optical layer 123 will be described in the corresponding part.
The frame 130 may serve to support components of the display device. For example, a configuration such as the backlight unit 120 may be coupled to the frame 130. The frame 130 may be made of a metal material such as aluminum alloy.
Alternatively, the frame 130 may be positioned on a back surface of the display device. The frame 130 may protect internal components from the outside. At least a part of the frame 130 may be coupled to the front cover 105. The frame 130 may be an injection material of a resin material.
The backlight unit 120 may include the optical layer 123 including a substrate 122, at least one optical assembly 124, a reflective sheet 126, and a diffusion plate 129, and the optical sheet 125 positioned on the front side of the optical layer 123.
The substrate 122 may be formed in a plurality of straps extending in the first direction and spaced apart at a predetermined distance in the second direction orthogonal to the first direction.
At least one optical assembly 124 may be mounted on the substrate 122. The substrate 122 may be formed with an electrode pattern for connecting an adapter and the optical assembly 124. For example, the substrate 122 may be formed with a carbon nanotube electrode pattern for connecting the optical assembly 124 and the adapter.
The substrate 122 may be made of at least one of polyethylene terephthalate (PET), glass, polycarbonate (PC), and silicon. The substrate 122 may be a printed circuit board (PCB) on which at least one optical assembly 124 is mounted.
The optical assembly 124 may be disposed on the substrate 122 at a predetermined distance in the first direction. A diameter of the optical assembly 124 may be greater than a width of the substrate 122. That is, it may mean that it may be greater than the length of the second direction of the substrate 122.
The optical assembly 124 may be a light emitting diode (LED) chip or a light emitting diode package including at least one light emitting diode chip.
The light assembly 124 may be composed of a colored LED emitting at least one color among colors such as red, blue, and green or a white LED. The colored LED may include at least one of a red LED, a blue LED, and a green LED.
The light source included in the optical assembly 124 may be, for example, a chip on board (COB) type. The COB type may be a form of directly coupling the LED chip as a light source to the substrate 122 as a light source. Therefore, the process may be simplified. In addition, it is possible to lower the resistance, thereby reducing the energy lost to heat. That is, it means that the power efficiency of the optical assembly 124 can be increased. The COB type may provide brighter illumination. The COB type may be implemented thinner and lighter than the conventional one.
The reflective sheet 126 may be positioned on the front side of the substrate 122. The reflective sheet 126 may be positioned on an area other than the area where the optical assembly 124 of the substrate 122 is formed. That is, it means that a plurality of through holes 132 may be formed in the reflective sheet 126.
The reflective sheet 126 may reflect light emitted from the optical assembly 124 toward the front side. Also, the reflective sheet 126 may reflect light reflected from the diffusion plate 129 again.
The reflective sheet 126 may include at least one of metal and metal oxide, which are reflective materials. For example, the reflective sheet 126 may include metal and/or metal oxide having a high reflectivity such as at least one of aluminum (Al), silver (Ag), gold (Au), and titanium dioxide (TiO2).
The reflective sheet 126 may be formed by depositing and/or coating metal or metal oxide on the substrate 122. The reflective sheet 126 may be printed with ink containing a metal material. The reflective sheet 126 may be formed with a deposition layer using a vapor deposition method such as a thermal deposition method, an evaporation method, or a sputtering method. A coating layer and/or a printing layer using a printing method, a gravure coating method, or a silk screen method may be formed on the reflective sheet 126.
An air gap may be positioned between the reflective sheet 126 and the diffusion plate 129. The air gap may serve as a buffer through which light emitted from the light assembly 124 can be widely spread. In order to maintain the air gap, a supporter 131 may be positioned between the reflective sheet 126 and the diffusion plate 129.
Resin may be deposited on the optical assembly 124 and/or the reflective sheet 126. The resin may serve to diffuse light emitted from the light assembly 124. The diffusion plate 129 may diffuse light emitted from the light assembly 124 upward.
The optical sheet 125 may be positioned on the front side of the diffusion plate 129. A back surface of the optical sheet 125 may be in close contact with the diffusion plate 129, and a front surface of the optical sheet 125 may be in close contact with the back surface of the display panel 110 (see
The optical sheet 125 may include at least one sheet. The optical sheet 125 may include one or more prism sheets and/or one or more diffusion sheets. The plurality of sheets included in the optical sheet 125 may be in a state of adhesion and/or closed contact.
The optical sheet 125 may be composed of a plurality of sheets having different functions. For example, the optical sheet 125 may include first to third optical sheets 125a to 125c. The first optical sheet 125a may have a function of a diffusion sheet, and the second and third optical sheets 125b and 125c may have a function of a prism sheet. The number and/or position of the diffusion sheet and prism sheet may be changed. For example, it means that the first optical sheet 125a which is a diffusion sheet and the second optical sheet 125b which is a prism sheet may be included.
The diffusion sheet may prevent light emitted from the diffusion plate 129 from being partially concentrated, thereby making the distribution of light more uniform. The prism sheet may collect light from the diffusion sheet and allow light to be incident perpendicularly to the display panel 110.
The coupling part 125d may be formed on at least one of the corners of the optical sheet 125. The coupling part 125d may be formed on at least one of the first to third optical sheets 125a to 125c.
The coupling part 125d may be formed at a long side edge of the optical sheet 125.
The coupling part 125d formed on the first long side and the coupling part 125d formed on the second long side may be asymmetric. For example, it means that the position and/or number of the coupling part 125d on the first long side and the coupling part 125d on the second long side may be different from each other.
Referring to
Referring to
A plurality of light sources 1240 may be mounted on the first substrate 1221. The plurality of light sources 1240 may be disposed on the first substrate 1221 while maintaining a constant distance. The plurality of light sources 1240 may be disposed on the second substrate 1222 while maintaining a constant distance. The plurality of light sources 1240 may be disposed on the third substrate 1223 while maintaining a constant distance. The plurality of light sources 1240 may be disposed on the fourth substrate 1224 while maintaining a constant distance.
The plurality of light sources 1240 may be disposed at the same distance from each other on the first substrate 1221 to the fourth substrate 1224. In other words, the plurality of light sources 1240 disposed on one substrate 122 may maintain the constant distance from each other.
For example, on the second substrate 1222 first direction distances D21 of the plurality of light sources 1240 may be constant with each other, and second direction distances D22 of the plurality of light sources 1240 may be constant with each other. In addition, on the fourth substrate 1224 first direction distances D41 of the plurality of light sources 1240 may be constant with each other, and second direction distances D42 of the plurality of light sources 1240 may be constant with each other.
A boundary area between the first substrate 1221 and the second substrate 1222 may be referred to as a 12th boundary area BA12, a boundary area between the first substrate 1221 and the third substrate 1223 may be referred to as a 13th substrate area BA13, a boundary area between the second substrate 1222 and the fourth substrate 1224 may be referred to as a 24th substrate area BA24, and a boundary area between the third substrate 1223 and the fourth substrate 1224 may be referred to as a 34th substrate area BA34.
For example, in the 24th boundary area BA24, a distance DB24 between the light source 1240 disposed on the second substrate 1222 and the light source 1240 disposed on the fourth substrate 1224 may be smaller than the distance D42 or the distance D22. That is, in the 24th boundary area BA24, the second direction distance DB24 between the light source 1240 disposed on the second substrate 1222 and the light source 1240 disposed on the fourth substrate 1224 may be smaller than the second direction distance D22 between the light sources 1240 disposed on the second substrate 1222 or the second direction distance D42 between the light sources 1240 disposed on the fourth substrate 1224. This can inhibit light uniformity of the display device.
Referring to
Referring to
Referring to
Referring to
The guide 230 may include a first part 231, a second part 232, a third part 233, and a fourth part 234. The first part 231 to the fourth part 234 may be triangular plates. The first part 231 may face the third part 233 with respect to a guide center 230C, and the second part 232 may face the fourth part 234 with respect to the guide center 230C. The first part 231 may be referred to as a first guide wall 231, the second part 232 may be referred to as a second guide wall 232, the third part 233 may be referred to as a third guide wall 233, and the fourth part 234 may be referred to as a fourth guide wall 234.
An inclined surface 2311 of the first part 231 may be smoothly extended from a side surface 210S of the body 210, an inclined surface 2321 of the second part 232 may be smoothly extended from the side surface 210S of the body 210, an inclined surface 2331 of the third part 233 may be smoothly extended from the side surface 210S of the body 210, and an inclined surface 2341 of the fourth part 234 may be smoothly extended from the side surface 210S of the body 210.
The inclined surface 2311 of the first part 231 may be referred to as a first guide inclined surface 2311, the inclined surface 2321 of the second part 232 may be referred to as a second guide inclined surface 2321, the inclined surface 2331 of the third part 233 may be referred to as a third guide inclined surface 2331, and the inclined surface 2341 of the fourth part may be referred to as a fourth guide inclined surface 2341.
For example, the first part 231 may be perpendicular to the second part 232 and/or the fourth part 234, and the third part 233 may be perpendicular to the second part 232 and/or the fourth part 234. For another example, the second part 232 and/or the fourth part 234 may be omitted. For another example, the fourth part 234 may be omitted, and the first part 231 may be disposed at an angle of 120 degrees with the second part 232 and/or the third part 233.
Referring to
Referring to
The first part 231 may be referred to as a first guide wall 231, the second part 232 may be referred to as a second guide wall 232, the third part 233 may be referred to as a third guide wall 233, the fourth part 234 may be referred to as a fourth guide wall 234.
The inclined surface 2311 of the first part 231 may be smoothly extended from a first side surface 210S1 of the body 210, the inclined surface 2321 of the second part 232 may be smoothly extended from a second side 210S2 of the body 210, the inclined surface 2331 of the third part 233 may be smoothly extended from a third side 210S3 of the body 210, and the inclined surface 2341 of the fourth part 234 may be smoothly extended from a fourth side surface 210S4 of the body 210.
The first side surface 210S1 may be referred to as a first body side surface 210S1, the second side surface 210S2 may be referred to as a second body side surface 210S2, the third side surface 210S3 may be referred to as a third body side surface 210S3, and the fourth side surface 210S4 may be referred to as a fourth body side surface 210S4.
Referring to
Referring to
The diffusion plate 129 may be bent toward the substrate 122 by its own weight or by movement of the display device. This phenomenon may increase as the display device is larger. The supporter 200 may support the diffusion plate 129, but the degree of bending of the diffusion plate 129 may not be constant. The guide 230 and/or the guide center 230C of the supporter 200 may have elasticity. Accordingly, it is possible to prevent damage to the surface of the diffusion plate 129 as well as damage to the supporter 200.
Certain embodiments or other embodiments of the present disclosure described above are not mutually exclusive or distinct from each other. The certain embodiments or other embodiments of the present disclosure described above may be used together or combined with each other in configuration or function.
For example, it means that a configuration A described in the specific embodiments and/or drawings may be combined with a configuration B described in the other embodiments and/or drawings. That is, even if the combination between the configurations is not directly described, it means that the combination is possible except when it is described that the combination is impossible.
The above detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the present disclosure should be determined by rational interpretation of the appended claims, and all variations within the scope of equivalents of the present disclosure are included in the scope of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2018-0027046 | Mar 2018 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2018/005395 | 5/10/2018 | WO | 00 |
