CN110673252A - Light guide plate and display device thereof - Google Patents
Light guide plate and display device thereof Download PDFInfo
- Publication number
- CN110673252A CN110673252A CN201910862688.7A CN201910862688A CN110673252A CN 110673252 A CN110673252 A CN 110673252A CN 201910862688 A CN201910862688 A CN 201910862688A CN 110673252 A CN110673252 A CN 110673252A
- Authority
- CN
- China
- Prior art keywords
- light guide
- guide plate
- display device
- plate
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a light guide plate and a display device thereof, wherein a plurality of hanging lugs are arranged below the light guide plate, a plurality of hanging holes are formed in the periphery of the light guide plate, and the light guide plate has elasticity; the invention also provides a display device, which uses the light guide plate. The light guide plate material and the display device provided by the invention can greatly reduce the use of the light guide plate material, and the light guide plate can not generate dimensional change when being heated due to the preset certain tensile stress, thereby solving the optical problem caused by thermal expansion and reducing the cost of a liquid crystal television.
Description
Technical Field
The invention relates to the technical field of display, in particular to a light guide plate and a display device thereof.
Background
At present, the technical development of the liquid crystal television is increased, the size is increased continuously, the material cost is increased continuously, and the process difficulty is higher and higher.
The backlight module is generally used in a vertical type, and needs to be positioned, the optical diaphragms in the prior art are positioned on a middle frame or a back plate, and the most common positioning mode is a leaning type positioning mode, namely, lugs are arranged on the optical diaphragms, positioning grooves are arranged on the middle frame or the back plate, the lugs are limited in the positioning grooves, and the adhesive tape is pasted to prevent the optical diaphragms from moving in the horizontal and vertical directions, because the backlight module generates heat during working, the optical diaphragms can be thermally expanded, and because of the limiting effect of the adhesive tape, the optical diaphragms cannot move in the plane direction, expansion spaces cannot be provided, the optical diaphragms are stressed and deformed, and the corrugation phenomenon is easy to generate, that is, the light emitted from the backlight module is not uniform, and there is a dark band, which causes the deterioration of the quality of the backlight module.
Disclosure of Invention
The invention provides a light guide plate and a display device thereof, which can greatly reduce the use of light guide plate materials, and because a certain tensile stress is preset, the dimension of the light guide plate can not change when being heated, thereby solving the optical problem caused by thermal expansion and reducing the cost of a liquid crystal television.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the embodiment of the invention provides a light guide plate, wherein a plurality of hanging lugs are arranged below the light guide plate, and a plurality of hanging holes are formed in the periphery of the light guide plate.
According to the light guide plate provided by the embodiment of the invention, the light guide plate is made of a high-transparency rubber material or a silica gel material.
According to the light guide plate provided by the embodiment of the invention, the light guide plate has elasticity.
The embodiment of the invention also provides a display device, which comprises the light guide plate mentioned in the embodiment;
the display device further includes: the liquid crystal display comprises a liquid crystal screen, a gasket, an optical membrane, a reflector plate, a middle frame, a back plate, a light source and a heat sink structure.
According to the display device provided by the embodiment of the invention, the heat sink structure is provided with a plurality of hooks, and the hooks are in one-to-one correspondence with the hanging lugs on the light guide plate.
According to the display device provided by the embodiment of the invention, the hook is matched with the hanging lug.
According to the display device provided by the embodiment of the invention, a plurality of positioning columns are arranged on the periphery of the back plate, and the positioning columns correspond to the hanging holes in the light guide plate one by one.
According to the display device provided by the embodiment of the invention, the hanging hole is matched with the positioning column.
According to the display device provided by the embodiment of the invention, the back plate is arranged in the middle frame, the reflector plate is arranged above the back plate, and the light guide plate is arranged above the reflector plate and connected with the back plate.
According to the display device provided by the embodiment of the invention, the optical film is arranged above the light guide plate, the gasket is arranged above the optical film, and the liquid crystal screen is arranged above the gasket; the heat sink structure is arranged behind the back plate, and the light source is arranged on the light incident surface of the light guide plate.
The invention has the beneficial effects that: the invention provides a light guide plate material and a display device.A light guide plate with elasticity is arranged, a hanging lug is arranged on the light guide plate, the hanging lug is matched with a hook of a heat sink structure to widen a light incident surface, and the even light efficiency is improved; and the light guide plate is provided with a hole which is matched with the positioning column of the back plate, so that the light guide plate is stretched into a larger size. Therefore, a large-size display can be manufactured by adopting less materials, and the cost of the display is reduced. And because a certain tensile stress is preset, the dimension of the light guide plate can not change when being heated, and the optical problem caused by thermal expansion is solved.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a light guide plate according to an embodiment of the present invention.
Fig. 2A is a schematic diagram of a positional relationship between a light guide plate and a light source in the prior art.
Fig. 2B is a schematic diagram of a positional relationship between the light guide plate and the light source according to the embodiment of the invention.
Fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Fig. 4 is a schematic view of the assembly of the hanger and heat sink structure.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
The invention provides a light guide plate and a display device thereof, which can greatly reduce the use of light guide plate materials, and because a certain tensile stress is preset, the dimension of the light guide plate can not change when being heated, thereby solving the optical problem caused by thermal expansion and reducing the cost of a liquid crystal television.
Fig. 1 is a schematic view of a light guide plate according to an embodiment of the present invention. The light guide plate 4 provided by the embodiment of the invention is an elastic light guide plate, a plurality of hanging lugs 402 are arranged below the light guide plate 4, and a plurality of hanging holes 401 are arranged around the light guide plate 4. The light guide plate 4 may be made of highly transparent rubber, silica gel, or the like.
As shown in fig. 2A, when the thicknesses of the light source 8 and the light guide plate 4 are not matched, a part of the light emitted from the light source 8 is not reflected by the light guide plate 4, so that a part of the light is lost, resulting in a low brightness of the display screen. As shown in fig. 2B, the light guide plate 4 provided in this embodiment is shown. This implementation light guide plate 4 that provides can draw big light-in face, can let the light that light source 8 sent most even all be reflected away by light guide plate 4, has reduced the loss of light, has promoted the utilization efficiency of light.
Fig. 3 shows a display device according to an embodiment of the present invention. The display device includes the light guide plate 4 mentioned in the above embodiment, and further includes: the liquid crystal display comprises a liquid crystal screen 1, a gasket 2, an optical membrane 3, a reflector plate 5, a middle frame 6, a back plate 7, a light source 8 and a heat sink structure 9.
Wherein, the heat sink structure 9 is provided with a plurality of hooks (not shown in the figure), and the hooks are in one-to-one correspondence with the hanging lugs 402 on the light guide plate 4; the hook is mated with the hanger 402. Because the light guide plate 4 has elasticity, the light incident surface can be enlarged by the hanging lugs 402, and the light utilization efficiency is improved. A plurality of positioning columns 701 are arranged on the periphery of the back plate 7, and the positioning columns 701 correspond to the hanging holes 401 on the light guide plate 4 one by one; the hanging hole 401 is matched with the positioning column 701. The light guide plate 4 can be stretched to a larger size by the hanging holes 401 matching with the positioning posts 701 on the back plate 7. Thus, a large-sized display can be assembled by using only the small-sized light guide plate 4, thereby reducing the cost of the display. And because a certain tensile stress is preset, the light guide plate 4 can not generate size change when being heated, thereby solving the optical problem caused by thermal expansion.
The assembly method of the display device is that the back plate 7 is arranged in the middle frame 6, the reflector plate 5 is arranged above the back plate 7, and the light guide plate 4 is arranged above the reflector plate 5 and connected with the back plate 7. The optical film 3 is arranged above the light guide plate 4, the gasket 2 is arranged above the optical film 3, and the liquid crystal screen 4 is arranged above the gasket 2; the heat sink structure 9 is arranged behind the back plate 7, and the light source 8 is arranged on the light incident surface of the light guide plate.
As shown in fig. 4, it is a schematic view of the assembly of the hanging lug 402 of the light guide plate 4 on the hook of the heat sink structure 9. The light incident surface of the light guide plate 4 can be widened by the hanging lugs 402 and the positioning columns 701 on the back plate 7, so that the even light efficiency is improved; the light guide plate 4 may be stretched to a larger size. Therefore, as long as less materials are adopted, a large-size display can be manufactured, and the cost of the display panel is reduced.
The beneficial effects are that: the invention provides a light guide plate and a display device thereof.A light guide plate with elasticity is arranged, a hanging lug is arranged on the light guide plate and is matched with a hook of a heat sink structure to widen a light incident surface, so that the even light efficiency is improved; and the light guide plate is provided with a hole which is matched with the positioning column of the back plate, so that the light guide plate is stretched into a larger size. Therefore, a large-size display can be manufactured by adopting less materials, and the cost of the display is reduced. And because a certain tensile stress is preset, the dimension of the light guide plate can not change when being heated, and the optical problem caused by thermal expansion is solved.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. The light guide plate is characterized in that a plurality of hanging lugs are arranged below the light guide plate, and a plurality of hanging holes are formed in the periphery of the light guide plate.
2. The light guide plate according to claim 1, wherein the light guide plate is made of a highly transparent rubber material or a silicone material.
3. The light guide plate according to claim 1, wherein the light guide plate has elasticity.
4. A display device, characterized in that the display device comprises the light guide plate according to any one of claims 1 to 3;
the display device further includes: the liquid crystal display comprises a liquid crystal screen, a gasket, an optical membrane, a reflector plate, a middle frame, a back plate, a light source and a heat sink structure.
5. The display device according to claim 4, wherein the heat sink structure is provided with a plurality of hooks, and the hooks are in one-to-one correspondence with the hanging lugs on the light guide plate.
6. The display device of claim 5, wherein the hook is configured to interact with the ear.
7. The display device according to claim 4, wherein a plurality of positioning posts are disposed around the back plate, and the positioning posts are in one-to-one correspondence with the hanging holes on the light guide plate.
8. The display device as claimed in claim 7, wherein the hanging hole is matched with the positioning post.
9. The display device according to claim 4, wherein the rear plate is disposed in the middle frame, the reflective sheet is disposed above the rear plate, and the light guide plate is disposed above the reflective sheet and connected to the rear plate.
10. The display device according to claim 9, wherein the optical film is disposed over the light guide plate, the spacer is disposed over the optical film, and the liquid crystal panel is disposed over the spacer; the heat sink structure is arranged behind the back plate, and the light source is arranged on the light incident surface of the light guide plate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910862688.7A CN110673252B (en) | 2019-09-12 | 2019-09-12 | Light guide plate and display device thereof |
| PCT/CN2019/129062 WO2021047114A1 (en) | 2019-09-12 | 2019-12-27 | Light guide plate and display device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910862688.7A CN110673252B (en) | 2019-09-12 | 2019-09-12 | Light guide plate and display device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110673252A true CN110673252A (en) | 2020-01-10 |
| CN110673252B CN110673252B (en) | 2021-09-03 |
Family
ID=69077858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910862688.7A Active CN110673252B (en) | 2019-09-12 | 2019-09-12 | Light guide plate and display device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110673252B (en) |
| WO (1) | WO2021047114A1 (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0817224A (en) * | 1994-06-30 | 1996-01-19 | Nippon Seiki Co Ltd | Lighting system |
| JP2005353486A (en) * | 2004-06-11 | 2005-12-22 | Sony Corp | Backlight device, liquid crystal display device having it, and method for molding light guide plate composing backlight device |
| JP2012216435A (en) * | 2011-03-31 | 2012-11-08 | Sharp Corp | Light source module, and electronic device equipped with same |
| WO2012153615A1 (en) * | 2011-05-10 | 2012-11-15 | 富士フイルム株式会社 | Planar illumination device |
| CN102853342A (en) * | 2012-09-11 | 2013-01-02 | 深圳市华星光电技术有限公司 | Edge-lit LED backlight module, liquid crystal display device and fixation method of reflector plate |
| CN102913854A (en) * | 2011-07-31 | 2013-02-06 | 华新丽华股份有限公司 | Light guide plate capable of adjusting light-emitting angle, lighting device capable of adjusting light-emitting angle and method for adjusting light-emitting angle |
| CN203131584U (en) * | 2013-01-23 | 2013-08-14 | 青岛海信电器股份有限公司 | Backlight module and television |
| CN103822144A (en) * | 2014-03-10 | 2014-05-28 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device using same |
| CN106680926A (en) * | 2015-08-07 | 2017-05-17 | 株式会社日本显示器 | Illuminating device |
| CN106842693A (en) * | 2015-11-03 | 2017-06-13 | 三星显示有限公司 | Back light unit, display device and its manufacture method |
| CN207096493U (en) * | 2017-08-02 | 2018-03-13 | 上海兆熠电子科技有限公司 | A kind of good light guide plate of anti-bending thermal diffusivity |
| US20180120643A1 (en) * | 2016-10-28 | 2018-05-03 | Citizen Electronics Co., Ltd. | Side edge planar lighting unit |
| JP2019109999A (en) * | 2017-12-18 | 2019-07-04 | シチズン電子株式会社 | Planar light unit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614352B (en) * | 2009-07-08 | 2010-12-08 | 友达光电股份有限公司 | Backlight module and display module |
| CN102384400A (en) * | 2010-08-30 | 2012-03-21 | 深圳帝光电子有限公司 | Flexible light-emitting module and illuminating device |
| CN203147502U (en) * | 2013-03-19 | 2013-08-21 | 青岛海信电器股份有限公司 | Backlight module and display device |
| CN203350566U (en) * | 2013-06-26 | 2013-12-18 | 南京中电熊猫液晶显示科技有限公司 | Light guide plate and backlight module |
-
2019
- 2019-09-12 CN CN201910862688.7A patent/CN110673252B/en active Active
- 2019-12-27 WO PCT/CN2019/129062 patent/WO2021047114A1/en active Application Filing
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0817224A (en) * | 1994-06-30 | 1996-01-19 | Nippon Seiki Co Ltd | Lighting system |
| JP2005353486A (en) * | 2004-06-11 | 2005-12-22 | Sony Corp | Backlight device, liquid crystal display device having it, and method for molding light guide plate composing backlight device |
| JP2012216435A (en) * | 2011-03-31 | 2012-11-08 | Sharp Corp | Light source module, and electronic device equipped with same |
| WO2012153615A1 (en) * | 2011-05-10 | 2012-11-15 | 富士フイルム株式会社 | Planar illumination device |
| CN102913854A (en) * | 2011-07-31 | 2013-02-06 | 华新丽华股份有限公司 | Light guide plate capable of adjusting light-emitting angle, lighting device capable of adjusting light-emitting angle and method for adjusting light-emitting angle |
| CN102853342A (en) * | 2012-09-11 | 2013-01-02 | 深圳市华星光电技术有限公司 | Edge-lit LED backlight module, liquid crystal display device and fixation method of reflector plate |
| CN203131584U (en) * | 2013-01-23 | 2013-08-14 | 青岛海信电器股份有限公司 | Backlight module and television |
| CN103822144A (en) * | 2014-03-10 | 2014-05-28 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device using same |
| CN106680926A (en) * | 2015-08-07 | 2017-05-17 | 株式会社日本显示器 | Illuminating device |
| CN106842693A (en) * | 2015-11-03 | 2017-06-13 | 三星显示有限公司 | Back light unit, display device and its manufacture method |
| US20180120643A1 (en) * | 2016-10-28 | 2018-05-03 | Citizen Electronics Co., Ltd. | Side edge planar lighting unit |
| CN207096493U (en) * | 2017-08-02 | 2018-03-13 | 上海兆熠电子科技有限公司 | A kind of good light guide plate of anti-bending thermal diffusivity |
| JP2019109999A (en) * | 2017-12-18 | 2019-07-04 | シチズン電子株式会社 | Planar light unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110673252B (en) | 2021-09-03 |
| WO2021047114A1 (en) | 2021-03-18 |
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