CN101509987A - Light guide board and back light module unit using the light guide board - Google Patents
Light guide board and back light module unit using the light guide board Download PDFInfo
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- CN101509987A CN101509987A CNA2009100381017A CN200910038101A CN101509987A CN 101509987 A CN101509987 A CN 101509987A CN A2009100381017 A CNA2009100381017 A CN A2009100381017A CN 200910038101 A CN200910038101 A CN 200910038101A CN 101509987 A CN101509987 A CN 101509987A
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- light
- light guide
- guide plate
- reflection horizon
- reflecting surface
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Abstract
The invention relates to a light guide plate and a backlight module which uses the light guide plate. The backlight module comprises a light source and the light guide plate; the light guide plate comprises a light inlet surface, a light outlet surface adjacent to the light inlet surface, and a reflecting surface which is arranged opposite to the light outlet surface; the light inlet surface is a side surface of the light guide plate, wherein the reflecting surface is provided with a reflecting layer which is sprayed with ink or other light-tight materials. When lights reach the reflecting surface, total reflection is generated to the lights due to the action of the reflecting layer; and then the lights are emitted from the light outlet surface, thus reducing the loss rate of lights and increasing the light emitting efficiency and light emitting intensity of the light guide plate.
Description
Technical field
The present invention relates to a kind of light guide plate and use the module backlight of this light guide plate, relate in particular to a kind of module backlight that is applied to the light guide plate of electronic products such as mobile phone or LCD and uses this light guide plate.
Background technology
Along with digital development of science and technology, liquid crystal display product has been widely used in each aspect of daily life.But liquid crystal itself can be not luminous, and needing light supply apparatus constantly provides light to inject LCD Panel, can realize that picture shows.Be display frame preferably, the light that requires light supply apparatus to inject LCD Panel has higher-strength, and is evenly distributed.
Prior art adopts mostly a reflector plate is set below light guide plate, source reflection is gone out described light guide plate, one diffusion sheet and concentration piece once are set above light guide plate again, diffusion sheet will be broken up earlier from the light that light source penetrates, make penetrating a bit that light source can not concentrate in certain, in effect through concentration piece, make the light of dispersing can converge to the exiting surface of light guide plate, penetrate from exiting surface again.This method structure more complicated of technology is produced inconvenience is installed now, and processing cost is than higher.Can reflect thus, the invention provides a kind of luminous light guide plate even and simple in structure and use the real genus of module backlight of this light guide plate necessary.
Summary of the invention
The invention provides a kind of light guide plate and use the module backlight of this light guide plate, a plurality of microstructures are set, and in the bottom surface one reflection horizon is set and improves the brightness of light guide plate, uniformity coefficient by bottom surface in light guide plate.
Above-mentioned purpose is achieved in that
A kind of light guide plate, it includes an incidence surface, an exiting surface adjacent with described incidence surface reaches a reflecting surface relative with described exiting surface, on described reflecting surface, be provided with the microchannel configuration that plurality of parallel distributes, it is characterized in that, on described reflecting surface, be provided with a reflection horizon, when light was injected, a part of light penetrated from exiting surface through refraction, and another part light then is refracted on the reflection horizon and after reflective layer reflects and penetrates from exiting surface.
Preferably, described reflection horizon is a light-proof material.
Preferably, described reflection horizon is coating or printing ink.
A kind of module backlight, it comprises:
Light source is in order to send light;
Light guide plate, it places a side of described light source, described light guide plate includes an incidence surface, an exiting surface adjacent with described incidence surface reaches a reflecting surface relative with described exiting surface, on described reflecting surface, be provided with the microchannel configuration that plurality of parallel distributes, it is characterized in that, on described reflecting surface, be provided with a reflection horizon, when light is injected, part light upwards penetrates from exiting surface through refraction, and another part light then is refracted on the reflection horizon and after reflective layer reflects and penetrates from exiting surface.
Compared to prior art, light guide plate of the present invention and use the module backlight of this light guide plate to have the following advantages:
One reflection horizon is set on reflecting surface, makes light when being mapped to described reflection horizon, do not have light losing, total reflection can take place, farthest the exiting surface from light guide plate penetrates, thereby increases the brightness of entire aphototropism mould, reduces the usage quantity of LED.
Reflector material of the present invention is a not enough luminescent material such as coating or printing ink, those light-proof material low prices, and those light-proof materials employings spray or the mode of printing is arranged on the reflecting surface, and manufacture method is simple, no matter be lower cost for material, make also fairly simple.Compared to prior art, the structure of the present invention's module backlight and processing procedure are all fairly simple, have reduced production cost again simultaneously, have strengthened competitiveness of product.
Description of drawings
The present invention is described in more detail below in conjunction with accompanying drawing and example:
The perspective view of the module backlight that Fig. 1 is disclosed for the first embodiment of the invention mode;
Fig. 2 is the local enlarged diagram in light guide plate shown in Figure 1 side.
Embodiment
The perspective view of the module backlight that Fig. 1 is disclosed for the first embodiment of the invention mode is referring to Fig. 1.The present invention's module 10 backlight comprises light source 100, in order to emit beam; And light guide plate 200.Described light guide plate 200 is a transparent panel, it places a side of described light source 100, include an incidence surface 201, an exiting surface 202 adjacent, an and reflecting surface 203 relative with described exiting surface 202 with described incidence surface 201, described reflecting surface 203 is provided with a plurality of microchannel configuration 2031, more be provided with a reflection horizon 2032 on described reflecting surface 203, described reflection horizon 2032 materials are coating or printing ink.Described light source 100 is a light emitting diode, and is arranged at the middle position setting near the incidence surface 201 of light guide plate 200.In simple terms, the light that light source 100 sends enters from the incidence surface 201 of light guide plate 200, when light is mapped to reflecting surface 203, because the opaqueness in reflection horizon 2032 makes light that total reflection can take place, penetrates from exiting surface 202 behind the travel path of change light.
Described light guide plate 200 adopts the optical plastic materials to make, and its material can be polymethylmethacrylate (Poly Meth Lmethacry Late, PMMA is commonly called as acryl or organic glass), also can be polycarbonate (Polgcarbonate, PC) etc.
Fig. 2 is the local enlarged diagram in light guide plate shown in Figure 1 side, referring to Fig. 2.Be arranged on light guiding surface 200 exiting surfaces cross section V-type, dome-type or the waveform of 202 microchannel configuration 2031, the present invention is preferably V-type, and those a plurality of microchannel configuration 2031 parallel distributions have side by side promptly constituted described reflection horizon 203.
Continuation is referring to Fig. 2, wherein illustrated the transmission path of light in light guide plate.The light that light source 100 sends is injected from the incidence surface 201 of light guide plate 200, when being incident upon microchannel configuration 2031, because showing, reflecting surface 203 is provided with reflection horizon 2032, so light can printing opacity reflecting surface 203 and penetrate, total reflection takes place 203 of reflectings surface in light, penetrate from exiting surface 202 entirely, what increased module 10 backlight goes out light intensity and light extraction efficiency.
In the present invention, described reflection horizon 2032 can form by the mode of spraying or printing, and processing procedure is very simple.
Light guide plate of the present invention and use the module backlight of this light guide plate, it is by increasing by a reflection layer structure at reflecting surface, make that light can be in reflecting surface generation total reflection, thereby increase the light extraction efficiency of light guide plate and go out light intensity, and it is simple in structure, and manufacturing process is also easy especially.
The above person of thought, only for the present invention's preferred embodiment, when the scope that can not limit the invention process with this, promptly the content of putting down in writing according to claim of the present invention and description of the invention has generally been done simple equivalent and is changed and modify, and all still belongs within the claim of the present invention institute covering scope.In addition, summary part and title only are the usefulness that is used for assisting the patent document search, are not the interest field that is used for limiting the present invention.
Claims (6)
1. light guide plate, it includes an incidence surface, an exiting surface adjacent with described incidence surface reaches a reflecting surface relative with described exiting surface, on described reflecting surface, be provided with the microchannel configuration that plurality of parallel distributes, it is characterized in that, on described reflecting surface, be provided with a reflection horizon, when light was injected, a part of light penetrated from exiting surface through refraction, and another part light then is refracted on the reflection horizon and after reflective layer reflects and penetrates from exiting surface.
2. light guide plate as claimed in claim 1 is characterized in that, described reflection horizon is a light-proof material.
3. light guide plate as claimed in claim 2 is characterized in that, described reflection horizon is coating or printing ink.
4. module backlight, it comprises:
Light source is in order to send light;
Light guide plate, it places a side of described light source, described light guide plate includes an incidence surface, an exiting surface adjacent with described incidence surface reaches a reflecting surface relative with described exiting surface, on described reflecting surface, be provided with the microchannel configuration that plurality of parallel distributes, it is characterized in that, on described reflecting surface, be provided with a reflection horizon, when light is injected, part light upwards penetrates from exiting surface through refraction, and another part light then is refracted on the reflection horizon and after reflective layer reflects and penetrates from exiting surface.
5. light guide plate as claimed in claim 1 is characterized in that described reflection horizon is coated with light-proof material.
6. light guide plate as claimed in claim 2 is characterized in that described reflection horizon is coated with coating or printing ink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100381017A CN101509987A (en) | 2009-03-19 | 2009-03-19 | Light guide board and back light module unit using the light guide board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100381017A CN101509987A (en) | 2009-03-19 | 2009-03-19 | Light guide board and back light module unit using the light guide board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101509987A true CN101509987A (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100381017A Pending CN101509987A (en) | 2009-03-19 | 2009-03-19 | Light guide board and back light module unit using the light guide board |
Country Status (1)
| Country | Link |
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| CN (1) | CN101509987A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104424712A (en) * | 2013-08-23 | 2015-03-18 | 鸿富锦精密工业(武汉)有限公司 | Vending machine |
| CN105204108A (en) * | 2015-10-08 | 2015-12-30 | 京东方光科技有限公司 | Lateral-incident light guide plate, backlight module, manufacturing method of light guide plate and display device |
| CN109239837A (en) * | 2018-11-09 | 2019-01-18 | 深圳Tcl新技术有限公司 | Light guide plate side reflector plate attachment process and light guide plate |
| WO2020010757A1 (en) * | 2018-07-11 | 2020-01-16 | 深圳市华星光电半导体显示技术有限公司 | Backlight module, method for manufacturing same, and transparent liquid crystal display apparatus having same |
| CN111578185A (en) * | 2020-06-16 | 2020-08-25 | 华域视觉科技(上海)有限公司 | Light guide structure, light emitting component, vehicle control panel and vehicle |
| CN111708218A (en) * | 2020-06-11 | 2020-09-25 | 南京聚清新材料有限公司 | Light guide film and backlight module |
| CN111781769A (en) * | 2019-04-03 | 2020-10-16 | 京东方科技集团股份有限公司 | Backlight assembly and liquid crystal display device |
-
2009
- 2009-03-19 CN CNA2009100381017A patent/CN101509987A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104424712A (en) * | 2013-08-23 | 2015-03-18 | 鸿富锦精密工业(武汉)有限公司 | Vending machine |
| CN104424712B (en) * | 2013-08-23 | 2016-12-14 | 重庆金宏机械工具厂（普通合伙） | Automatic vending machine |
| CN105204108A (en) * | 2015-10-08 | 2015-12-30 | 京东方光科技有限公司 | Lateral-incident light guide plate, backlight module, manufacturing method of light guide plate and display device |
| CN105204108B (en) * | 2015-10-08 | 2018-03-13 | 京东方光科技有限公司 | Edge-type light guide plate, backlight module and preparation method thereof and display device |
| WO2020010757A1 (en) * | 2018-07-11 | 2020-01-16 | 深圳市华星光电半导体显示技术有限公司 | Backlight module, method for manufacturing same, and transparent liquid crystal display apparatus having same |
| CN109239837A (en) * | 2018-11-09 | 2019-01-18 | 深圳Tcl新技术有限公司 | Light guide plate side reflector plate attachment process and light guide plate |
| CN109239837B (en) * | 2018-11-09 | 2020-11-03 | 深圳Tcl新技术有限公司 | Light guide plate side reflector plate attaching process and light guide plate |
| CN111781769A (en) * | 2019-04-03 | 2020-10-16 | 京东方科技集团股份有限公司 | Backlight assembly and liquid crystal display device |
| CN111708218A (en) * | 2020-06-11 | 2020-09-25 | 南京聚清新材料有限公司 | Light guide film and backlight module |
| CN111578185A (en) * | 2020-06-16 | 2020-08-25 | 华域视觉科技(上海)有限公司 | Light guide structure, light emitting component, vehicle control panel and vehicle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090819 |