CN107340642B - Back plate of backlight module, backlight module and curved surface display - Google Patents
Back plate of backlight module, backlight module and curved surface display Download PDFInfo
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- CN107340642B CN107340642B CN201710718097.3A CN201710718097A CN107340642B CN 107340642 B CN107340642 B CN 107340642B CN 201710718097 A CN201710718097 A CN 201710718097A CN 107340642 B CN107340642 B CN 107340642B
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- back plate
- plate
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- backlight module
- side edge
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
Abstract
The invention provides a back plate of a backlight module, the backlight module and a curved surface display. The display comprises a liquid crystal panel and a backlight module. The liquid crystal panel is arranged on one light emitting side of the backlight module. The backlight module comprises a back plate, a reflector plate, a light guide plate, a light bar and an aluminum extruded plate. The back plate is of a curved surface structure; the back plate comprises a first area and a second area connected with the first area; the radius of curvature of the first region is smaller than the radius of curvature of the second region. In the packaging process of the curved-surface display, the liquid crystal panel, the reflector plate and the light guide plate are sequentially stacked on the back plate, and the aluminum extruded plate is loaded in the second area. Due to the rigidity of the aluminum extruded plate, the restoring force of the first area of the back plate is larger than that of the second area. Finally, the curvature radius of each area of the back plate is uniform, and the consistency is kept, so that the display quality of the ultrathin curved surface display is improved.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a back plate of a backlight module, the backlight module and a curved surface display.
Background
With the rapid development of display technologies and the increasing demands of users on the visual effects of electronic products such as televisions and computers, electronic devices with ultra-thin curved displays are becoming popular among users.
At present, electronic equipment of an ultrathin curved surface display can provide surrounding impression, simulate naked eye three-dimensional visual effect and bring deep panoramic experience to more users by utilizing self-owned extensive vision. In addition, the electronic equipment of the ultrathin curved surface display can bring the feeling of conciseness, dry and high technological sense to users due to the superior ultrathin characteristic. Therefore, the design of the back plate structure of the ultrathin curved display is very important. However, the curvature radius of the backplate is often not uniform in the design of the backplate structure and in the process of packaging the module, so that the uniformity cannot be maintained, and the display has a series of poor pictures.
Disclosure of Invention
The invention aims to provide a back plate of a backlight module, which is used for solving the technical problem of uneven curvature radius of an ultrathin curved back plate, thereby improving the picture of a display.
The invention provides a back plate of a backlight module. The back plate is of a curved surface structure; the back plate comprises a first area and a second area connected with the first area; the radius of curvature of the first region is less than the radius of curvature of the second region.
The back plate comprises a first side edge and a second side edge opposite to the first side edge; the first side edge is one side of the first area far away from the second area, and the second side edge is positioned on one side of the second area far away from the first area; the curvature radius of the back plate is gradually increased from the first side edge to the second side edge.
Wherein, the back plate is a thin plate formed by stamping.
The back plate is made of one of stainless steel, aluminum alloy, electro-galvanized steel and hot-dip galvanized new steel.
Wherein, the back plate is an arc-shaped thin plate.
The invention also provides a backlight module which comprises the back plate, the light bar and the aluminum extruded plate provided with the light bar, wherein the back plate is of a curved surface structure; the back plate comprises a first area and a second area connected with the first area; the radius of curvature of the first region is smaller than the radius of curvature of the second region; the aluminum substrate layer is laminated on the second region.
The back plate comprises a first side edge and a second side edge opposite to the first side edge; the first side edge is one side of the first area far away from the second area, and the second side edge is positioned on one side of the second area far away from the first area; the curvature radius of the back plate is gradually increased from the first side edge to the second side edge.
The back plate is an arc-shaped thin plate formed by stamping.
The backlight module also comprises a light guide plate and a reflector plate; the reflector plate and the light guide plate are sequentially stacked on the back plate, and the lamp strip is located on one side of the light incident surface of the light guide plate.
The invention also provides a curved surface display which comprises a liquid crystal panel and a backlight module, wherein the liquid crystal panel is arranged on the light emitting side of the backlight module.
The invention has the following beneficial effects: by designing the radii of curvature of the first region of the back plate and the second region of the back plate to be different, i.e. the radius of curvature of the first region is smaller than the radius of curvature of the second region. Then, it is considered that the aluminum extruded plate which is arranged on the convex surface of the second area and is bent along the bending direction of the second area makes the second area of the back plate receive smaller elastic force relative to the first area of the back plate. Finally, the curvature radius of each area of the back plate is uniform, and the consistency is kept, so that the display quality of the ultrathin curved surface display is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a back plate structure according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a backlight module of the invention.
Fig. 3 is an assembly view of the back plate and the aluminum extruded plate of fig. 2.
Fig. 4 is a schematic structural diagram of the curved display according to the present invention.
Fig. 5 is a cross-sectional view of the curved display of fig. 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the invention provides a back plate 11, where the back plate 11 is a curved surface structure. The back plate 11 includes a first region 111 and a second region 112. The back plate 11 is a thin plate made by a stamping process. The radius of curvature of the first region 111 is smaller than the radius of curvature of the second region 112. In this embodiment, the material of the back plate 11 is a thin plate-like sheet of stainless steel, but in other embodiments, the material of the back plate 11 may be aluminum alloy, electrogalvanized steel, or hot-dip galvanized steel.
As shown in FIG. 1, the back plate 11 includes a first side 113 and a second side 114 disposed opposite the first side 113; the first side 113 is a side of the first region 111 away from the second region 112, and the second side 114 is located on a side of the second region 112 away from the first region 111; the radius of curvature of the backplate 11 increases from the first side 113 to the second side 114. In this embodiment, the back plate 11 is an arc-shaped thin plate, and the first region 111 and the second region 112 extend in an arc direction. Referring to fig. 2 and 3, a backlight module 10 according to an embodiment of the present invention includes a back plate 11, a light bar (not shown), an aluminum extrusion plate 13 for fixing the light bar, a light guide plate 14, and a reflective sheet 15. The back plate 11 comprises a concave surface 115 and a convex surface 116. The reflective sheet 15 and the light guide plate 14 are sequentially stacked on the concave surface 115 of the back plate 11. The extruded aluminum sheet 13 is disposed on the convex surface 116 of the second region 112 of the back plate 11 and bent along the bending direction of the second region 112. The extruded aluminum sheet 13 is used to provide heat dissipation and support for the light bar. The light bar is located on one side of the light incident surface of the light guide plate 14 and used for providing a light source for the backlight module 10. The light guide plate 14, the reflector plate 15, the back plate 11, the light bar and the aluminum extruded plate 13 for fixing the light bar are connected in a bonding mode. Of course, in other embodiments, the light guide plate 14, the reflective sheet 15, the back plate 11, and the aluminum extruded plate 13 for fixing the light bar may be connected by means of embedding, magnetic attraction, or vacuum attraction.
The values and the variation trends of the curvature radius of the respective regions of the back plate 11 are related to the reflective sheet 15, the light guide plate 14 and the aluminum extruded plate 13 loaded on the back plate 11. When the reflective sheet 15 and the light guide plate 14 are sequentially stacked on the concave surface 115 of the back plate 11, since the light guide plate 14 is bent from a flat surface to a curved surface by the back plate 11, the light guide plate 14 will generate a certain amount of elastic force to the back plate 11, and the existence of the elastic force will cause the curvature radius of the back plate 11 to be restored to a certain degree. In this case, the curvature radius of each region of the back sheet 11 is larger than the curvature radius of the unloaded reflector sheet 15 and the light guide plate 14, but the curvature radius of the first region 111 of the back sheet 11 is still smaller than the curvature radius of the second region 112.
However, the extruded aluminum sheet 13 is disposed on the convex surface 116 of the second region 112 of the back plate 11 and bent along the bending direction of the second region 112. Because the extruded aluminum sheet 13 is made of a metal material, the extruded aluminum sheet 13 has a certain rigidity. When the light guide plate 14 generates a certain amount of elastic force to the back plate 11, the rigidity of the aluminum extruded plate 13 counteracts a part of the elastic force. At this time, the curvature radius of each region of the back plate 11 changes to a different degree. Obviously, since the extruded aluminum sheet 13 is disposed in the second region of the back sheet 11, the change value of the curvature radius of the second region 112 of the back sheet 11 is small relative to the change value of the curvature radius of the first region 111 of the back sheet 11. When the reflective sheet 15, the light guide plate 14 and the aluminum extruded plate 13 are not loaded on the rear plate 11, the curvature radius of the first region 111 of the rear plate 11 is smaller than that of the second region 112, and after the reflective sheet 15, the light guide plate 14 and the aluminum extruded plate 13 are loaded, the return of the curvature radius of the first region 111 of the rear plate 11 is large relative to that of the second region 112 of the rear plate 11. Finally, the radius of curvature of the first region 111 of the back-plate 11 is approximately equal to the radius of curvature of the second region 112.
Referring to fig. 4 and fig. 5, an embodiment of the invention provides a curved display, which includes the backlight module 10 and the liquid crystal panel 20. The liquid crystal panel 20 is disposed on a light emitting side of the backlight module 10.
In the process of packaging the curved display, the liquid crystal panel 20 is stacked on the backlight module 10. The backlight module 10 includes a back plate 11, a light bar (not shown), an aluminum extrusion plate 13 for fixing the light bar, a light guide plate 14, and a reflective sheet 15. The reflective sheet 15 and the light guide plate 14 are sequentially stacked on the concave surface 115 of the back plate 11. The extruded aluminum sheet 13 is disposed on the convex surface 116 of the second region 112 and bent along the bending direction of the second region 112. When the reflective sheet 15, the light guide plate 14, and the aluminum extruded sheet 13 are not loaded on the rear plate 11, the radius of curvature of the first region 111 of the rear plate 11 is set smaller than the radius of curvature of the second region 112. After the back plate 11 is loaded with the reflective sheet 15, the light guide plate 14 and the extruded aluminum plate 13, the first region 111 and the second region 112 of the back plate 11 are subjected to different degrees of elasticity, so that the return of the curvature radius of the first region 111 of the back plate 11 is larger than the return of the curvature radius of the second region 112 of the back plate 11. Thus, the radius of curvature of the first region 111 of the back-plate 11 is approximately equal to the radius of curvature of the second region 112. When the backlight module 10 is laminated with the liquid crystal panel 20, the liquid crystal panel 20 has an elastic force on the back plate 11, but the elastic force has a consistent elastic force on each region of the back plate 11, and the difference of the change values of the curvature radii of the first region 111 and the second region 112 of the back plate 11 is not affected. Finally, after the curved surface display is packaged, the curvature radius of each area of the back plate 11 is uniform, consistency is kept, and the whole stress of the curved surface display is balanced, so that the display quality of the ultrathin curved surface display is improved.
By designing the radii of curvature of the first region 111 of the back plate 11 and the second region 112 of the back plate 11 to be different, i.e. the radius of curvature of the first region 111 is smaller than the radius of curvature of the second region 112. The reflective sheet 15, the light guide plate 14 and the liquid crystal panel 20 exhibit uniform elasticity to the respective regions of the rear plate 11, but the aluminum extrusion plate 13, which is provided on the convex surface 116 of the second region 112 and bent along the bending direction of the second region 112, makes the second region 112 of the rear plate 11 receive less elasticity than the first region 111 of the rear plate 11. Finally, the curvature radius of each area of the back plate 11 is uniform, and the consistency is kept, so that the display quality of the ultrathin curved surface display is improved.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a backplate of backlight unit which characterized in that: the back plate is of a curved surface structure; the back plate comprises a first area and a second area connected with the first area; the radius of curvature of the first region is less than the radius of curvature of the second region;
the back plate comprises a concave surface and a convex surface, the concave surface is used for stacking a reflector plate and a light guide plate, the second area of the convex surface is used for arranging an aluminum extruded plate, and the aluminum extruded plate is bent along the bending direction of the second area;
the back plate comprises a first side edge and a second side edge opposite to the first side edge; the first side edge is one side of the first area far away from the second area, and the second side edge is positioned on one side of the second area far away from the first area; the curvature radius of the back plate is gradually increased from the first side edge to the second side edge.
2. The back plate of a backlight module according to claim 1, wherein the back plate is a stamped and formed thin plate.
3. The back plate of claim 2, wherein the back plate is made of one of stainless steel, aluminum alloy, electro-galvanized steel and hot-dipped galvanized steel.
4. The back plate of a backlight module as claimed in claim 1, wherein the back plate is an arc-shaped thin plate.
5. A backlight module is characterized by comprising a back plate, a light bar and an aluminum extruded plate provided with the light bar, wherein the back plate is of a curved surface structure; the back plate comprises a first area and a second area connected with the first area; the radius of curvature of the first region is less than the radius of curvature of the second region; the back plate comprises a concave surface and a convex surface, the reflecting sheet and the light guide plate are sequentially stacked on the concave surface, the aluminum extruded plate is stacked on the second area of the convex surface, and the aluminum extruded plate is bent along the bending direction of the second area;
the back plate comprises a first side edge and a second side edge opposite to the first side edge; the first side edge is one side of the first area far away from the second area, and the second side edge is positioned on one side of the second area far away from the first area; the curvature radius of the back plate is gradually increased from the first side edge to the second side edge.
6. The backlight module of claim 5, wherein the back plate is an arc-shaped thin plate formed by stamping.
7. The backlight module as claimed in claim 5, wherein the backlight module further comprises a light guide plate and a reflective sheet; the reflector plate and the light guide plate are sequentially stacked on the back plate, and the lamp strip is located on one side of the light incident surface of the light guide plate.
8. A curved surface display, comprising a liquid crystal panel and the backlight module set according to any one of claims 5-7, wherein the liquid crystal panel is disposed on a light emitting side of the backlight module set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718097.3A CN107340642B (en) | 2017-08-21 | 2017-08-21 | Back plate of backlight module, backlight module and curved surface display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718097.3A CN107340642B (en) | 2017-08-21 | 2017-08-21 | Back plate of backlight module, backlight module and curved surface display |
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| Publication Number | Publication Date |
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| CN107340642A CN107340642A (en) | 2017-11-10 |
| CN107340642B true CN107340642B (en) | 2020-09-04 |
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| CN201710718097.3A Active CN107340642B (en) | 2017-08-21 | 2017-08-21 | Back plate of backlight module, backlight module and curved surface display |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873444B (en) * | 2018-07-17 | 2021-11-09 | Tcl华星光电技术有限公司 | Flexible light guide plate and flexible display |
| KR102608435B1 (en) * | 2018-11-02 | 2023-12-04 | 삼성디스플레이 주식회사 | Display apparatus |
| CN111681539B (en) * | 2020-06-24 | 2022-03-29 | Oppo广东移动通信有限公司 | Display module, manufacturing method thereof and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032836A (en) * | 2012-12-14 | 2013-04-10 | 京东方科技集团股份有限公司 | Back plate for backlights, backlight and display device |
| CN105225614A (en) * | 2015-10-26 | 2016-01-06 | 京东方科技集团股份有限公司 | A kind of camber display screen curvature regulating device and using method, curved-surface display device |
| CN105700214A (en) * | 2016-04-26 | 2016-06-22 | 深圳市华星光电技术有限公司 | Backboard structure and curved surface display |
| CN105903796A (en) * | 2016-04-20 | 2016-08-31 | 深圳市华星光电技术有限公司 | Hook-face displayer back plate forming equipment and method |
-
2017
- 2017-08-21 CN CN201710718097.3A patent/CN107340642B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032836A (en) * | 2012-12-14 | 2013-04-10 | 京东方科技集团股份有限公司 | Back plate for backlights, backlight and display device |
| CN105225614A (en) * | 2015-10-26 | 2016-01-06 | 京东方科技集团股份有限公司 | A kind of camber display screen curvature regulating device and using method, curved-surface display device |
| CN105903796A (en) * | 2016-04-20 | 2016-08-31 | 深圳市华星光电技术有限公司 | Hook-face displayer back plate forming equipment and method |
| CN105700214A (en) * | 2016-04-26 | 2016-06-22 | 深圳市华星光电技术有限公司 | Backboard structure and curved surface display |
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| CN107340642A (en) | 2017-11-10 |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |
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