CN1932604A - Photoconducting plate and back light module using the same photoconducting plate - Google Patents
Photoconducting plate and back light module using the same photoconducting plate Download PDFInfo
- Publication number
- CN1932604A CN1932604A CN 200510037358 CN200510037358A CN1932604A CN 1932604 A CN1932604 A CN 1932604A CN 200510037358 CN200510037358 CN 200510037358 CN 200510037358 A CN200510037358 A CN 200510037358A CN 1932604 A CN1932604 A CN 1932604A
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- guide plate
- light guide
- light
- site
- reflection horizon
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- Planar Illumination Modules (AREA)
Abstract
This invention relates to one kind of light board and the Back Light Unit that use the light board. This light board includes one underside and one reflecting layer. On the light board's underside there are many mesh points. The reflecting layer is formed on the underside and the mesh points' surface. At the same time, it also supplies a Back Light Unit that use the light board. The light board that use this structure and the Back Light Unit that use the light board can improve the beam utilization ratio, and make the assembly more convenient.
Description
[technical field]
The module backlight that the present invention relates to a kind of light guide plate and use this light guide plate is particularly about the backlight for liquid crystal display module.
[background technology]
Along with digital development of science and technology, liquid crystal display product has been widely used in each aspect of daily life, and (Liquid Crystal Display, LCD) image quality of screen requires also progressively to improve to liquid crystal display.But liquid crystal itself can be not luminous, and needing light source constantly provides light to inject display screen, can realize that just picture shows, in liquid crystal display product, selects module backlight that light is provided usually.
In recent years, the invention that improves light utilization efficiency module backlight constantly is suggested, wherein a kind of prior art module backlight as shown in Figure 1, this module 1 backlight comprises a light source 10, a reflector plate 11, a light guide plate 12, a diffusion sheet 13 and a prismatic lens 14.
This light guide plate 12 is the rectangular flat board in a cross section, has an incidence surface 121, a bottom surface 122 and an exiting surface 123.This incidence surface 121 is a side, and these light source 10 relative these incidence surfaces 121 are provided with, and this bottom surface 122 and this exiting surface 123 are one group of opposing parallel plane, and adjacent with this incidence surface 121 respectively.This bottom surface 122 and this exiting surface 123 surfaces are provided with a plurality of square sites 124, and this site 124 is disposed on this bottom surface 122 and this exiting surface 123 surfaces, and its distribution density is along with the increase of the distance of light source 10 and increase.
This reflector plate 11 is arranged on bottom surface 122 sides of this light guide plate 12, this module 1 backlight is used for liquid crystal indicator when providing backlight, the light that light source 10 produces imports light guide plate 12 from incidence surface 121, light is propagated in light guide plate 12, when running into site 124, site 124 makes light to scattering all around.When light penetrated light guide plate 12 through the gap between the site 124, part light can be injected light guide plate 12 once more via reflector plate 11 reflections, but because the part light after reflector plate 12 reflects can leak, causes light utilization to reduce.Light is after light guide plate 12 gets exiting surface 123 ejaculations, also need behind reflector plate 11, light guide plate 12 and a plurality of blooming piece element, to inject liquid crystal panel again, but this kind module 1 backlight is because how assembly element causes its cost higher usually, and assembling procedure is numerous and diverse, influences the product yield simultaneously.
[summary of the invention]
Above-mentioned module light backlight leaks in order to solve, assembly element reaches the problem of being inconvenient to assemble more, is necessary to provide a kind of module backlight that light leaked, reduced the light guide plate of assembly element and ease of assembly and uses this light guide plate that reduces.
A kind of light guide plate, it comprises a bottom surface and a reflection horizon, and this bottom surface of light guide plate is provided with a plurality of sites, and this reflection horizon is formed on this bottom surface and this surface, site.
A kind of module backlight, it comprises a light source and a light guide plate, this light guide plate comprises an incidence surface, a bottom surface and a reflection horizon, this incidence surface is adjacent with this bottom surface, this bottom surface of light guide plate is provided with a plurality of sites, this light source is near the incidence surface setting of this light guide plate, and this reflection horizon is formed on this bottom surface and this surface, site.
Compared to prior art, above-mentioned light guide plate and module backlight, employing is provided with the reflection horizon on bottom surface of light guide plate and surface, site, and cover the structure of this bottom surface and site, the gap in the elimination prior art between reflector plate and the bottom surface of light guide plate is reduced light and is leaked, effectively improve light utilization, and when this module backlight is applied to LCD, can save SMD reflector plate, ease of assembly.
[description of drawings]
Fig. 1 is a kind of module synoptic diagram backlight of prior art.
Fig. 2 is the module cross section structure synoptic diagram backlight that a kind of better embodiment disclosed.
Fig. 3 is the light guide plate cross section structure synoptic diagram that Fig. 2 disclosed.
[embodiment]
See also Fig. 2, be the module cross section structure synoptic diagram backlight that a kind of better embodiment disclosed.This module 2 backlight comprises a light source 20, a light source cover 201, a light guide plate 22, a housing 25, a diffusion sheet 23 and a prismatic lens 24.This light source cover 201 is accommodated this light source 20, and contiguous this light guide plate 22 sides setting, and this diffusion sheet 23 and this prismatic lens 24 are successively set on this light guide plate 22, this this light source cover 201 of housing 25 fixings, light guide plate 22, diffusion sheet 23 and prismatic lens 24.
In this module 2 backlight, (Cold CathodeFluorescent Lamp is CCFL) as light source to adopt cold cathode fluorescent tube.
See also Fig. 3, be the schematic cross-section of this light guide plate 22.This light guide plate 22 is that a cross section is the flat board of rectangle, have an incidence surface 221, a bottom surface 222, an exiting surface 223, a plurality of site 224 and a reflection horizon 225, this incidence surface 221 side that is this light guide plate 22 wherein, this bottom surface 222 and this exiting surface 223 are relative two parallel surfaces of this light guide plate, and this incidence surface 221 is adjacent with this bottom surface 222 and this exiting surface 223 respectively.
Be provided with a plurality of sites 224 on these 222 surfaces, light guide plate 22 bottom surfaces, these site 224 circle of position connected in stars are disposed on this 222 surfaces, bottom surface.This site 224 is for forming via ejection formation or transfer formation or compression forming, and this site 224 and light guide plate 22 be one, and its distribution density is along with the distance increase of light source 10 and increase.
Certainly this site 224 can also be rectangular protrusions.This rectangular protrusions is array distribution in this bottom surface, and its distribution density is along with the increase of the distance of light source 10 and increase.
In light guide plate 22 manufacture processes, after the bottom surface 222 of light guide plate 22 forms a plurality of sites 224, pass through mode of printing, the reflecting material of one tool high reflectance is printed on this bottom surface 222, and then form a reflection horizon 225, as the silver ion of doping high reflectance in common ink, will form the reflection horizon 225 of a silver color on these 222 surfaces, bottom surface.
This reflection horizon 225 can also adopt paster and spray pattern to be formed on this bottom surface 222, the site 224 that this reflection horizon 225 covers on this bottom surface 222, and the inwall of this site 224 directly contacts with this reflection horizon 225, reduces light 222 ejaculations from the bottom surface.
This light source 20 emits beam, and this light is injected from the incidence surface 221 of light guide plate 22, and light conducts to the bottom surface 222 of light guide plate 22, and when light ran into site 224, light was by site 224 one way or another scatterings; When light penetrates through the gap between the site 224, expose to reflection horizon 225, because reflection horizon 225 has highly reflective, make this part light be reflected back toward light guide plate 22, guarantee that light penetrates from exiting surface 223.Light sees through this diffusion sheet 23 and this prismatic lens 24 successively after exiting surface 223 penetrates, make convergence of rays, avoids light to leak, and has effectively improved light utilization.
In assembling process, because reflection horizon 225 is arranged on this bottom surface 222, so can directly light guide plate 22 and housing 25 be fitted together, saved independent reflector plate element, the element of entire aphototropism mould reduces, and avoids the numerous and diverse assembling procedure in the prior art, makes that assembling is convenient.Simultaneously because the simplification of assembling procedure also makes the product yield promote.
Claims (10)
1. a light guide plate, it comprises a bottom surface and a reflection horizon, this bottom surface of light guide plate is provided with a plurality of sites, it is characterized in that: this reflection horizon is formed on this bottom surface and this surface, site.
2. light guide plate as claimed in claim 1 is characterized in that: this network point distribution density is along with the distance with light source increases and increases.
3. light guide plate as claimed in claim 1 is characterized in that: this site and this light guide plate are one.
4. light guide plate as claimed in claim 1 is characterized in that: this site is a rectangular protrusions, and this rectangular protrusions array distribution is on this bottom surface.
5. light guide plate as claimed in claim 1 is characterized in that: this site is a circular groove, and this circular groove array distribution is on this bottom surface.
6. a module backlight, it comprises a light guide plate and a light source, this light guide plate comprises: an incidence surface, one bottom surface and a reflection horizon, this incidence surface is adjacent with this bottom surface, this bottom surface of light guide plate is provided with a plurality of sites, and this light source is provided with near this light guide plate incidence surface, and it is characterized in that: this reflection horizon is formed on this bottom surface and this surface, site.
7. module backlight as claimed in claim 6 is characterized in that: this network point distribution density is along with the distance with light source increases and increases.
8. module backlight as claimed in claim 6 is characterized in that: this site and this light guide plate are one.
9. module backlight as claimed in claim 6 is characterized in that: this site is a rectangular protrusions, and this rectangular protrusions array distribution is on this bottom surface.
10. module backlight as claimed in claim 6 is characterized in that: this site is a circular groove, and this circular groove array distribution is on this bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510037358 CN1932604A (en) | 2005-09-16 | 2005-09-16 | Photoconducting plate and back light module using the same photoconducting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510037358 CN1932604A (en) | 2005-09-16 | 2005-09-16 | Photoconducting plate and back light module using the same photoconducting plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1932604A true CN1932604A (en) | 2007-03-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510037358 Pending CN1932604A (en) | 2005-09-16 | 2005-09-16 | Photoconducting plate and back light module using the same photoconducting plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1932604A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901055A (en) * | 2012-10-31 | 2013-01-30 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module using same |
| CN103293591A (en) * | 2013-06-20 | 2013-09-11 | 昆山市诚泰电气股份有限公司 | Multi-functional integrated composite light guide plate and light-emitting diode (LED) plane light source with same |
| CN104165330A (en) * | 2014-06-27 | 2014-11-26 | 合肥京东方显示光源有限公司 | Optical module, backlight module and display device |
| CN105467505A (en) * | 2016-01-05 | 2016-04-06 | 武汉华星光电技术有限公司 | Light guide plate and backlight module |
| CN105511009A (en) * | 2015-12-22 | 2016-04-20 | 武汉华星光电技术有限公司 | Light guide plate, backlight module and liquid crystal display |
| CN106597746A (en) * | 2016-12-31 | 2017-04-26 | 惠科股份有限公司 | Backlight module and display device |
| CN108562963A (en) * | 2017-12-29 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Light guide plate |
| CN108873129A (en) * | 2018-06-25 | 2018-11-23 | 深圳市华星光电技术有限公司 | Reflector plate, side entrance back module and liquid crystal display |
| CN112558214A (en) * | 2020-12-09 | 2021-03-26 | Tcl通讯（宁波）有限公司 | Light guide plate structure, display device and electronic equipment |
| CN113138496A (en) * | 2021-04-16 | 2021-07-20 | 武汉华星光电半导体显示技术有限公司 | Backlight module and display device |
| CN113808478A (en) * | 2020-06-17 | 2021-12-17 | 北京小米移动软件有限公司 | Screen assembly, control method and control device thereof and electronic equipment |
| CN114609720A (en) * | 2022-03-30 | 2022-06-10 | 深圳市光像素科技有限公司 | Light guide plate and manufacturing method thereof |
-
2005
- 2005-09-16 CN CN 200510037358 patent/CN1932604A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901055A (en) * | 2012-10-31 | 2013-01-30 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module using same |
| CN103293591A (en) * | 2013-06-20 | 2013-09-11 | 昆山市诚泰电气股份有限公司 | Multi-functional integrated composite light guide plate and light-emitting diode (LED) plane light source with same |
| CN104165330A (en) * | 2014-06-27 | 2014-11-26 | 合肥京东方显示光源有限公司 | Optical module, backlight module and display device |
| CN105511009A (en) * | 2015-12-22 | 2016-04-20 | 武汉华星光电技术有限公司 | Light guide plate, backlight module and liquid crystal display |
| CN105467505A (en) * | 2016-01-05 | 2016-04-06 | 武汉华星光电技术有限公司 | Light guide plate and backlight module |
| CN106597746A (en) * | 2016-12-31 | 2017-04-26 | 惠科股份有限公司 | Backlight module and display device |
| CN108562963A (en) * | 2017-12-29 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Light guide plate |
| CN108873129A (en) * | 2018-06-25 | 2018-11-23 | 深圳市华星光电技术有限公司 | Reflector plate, side entrance back module and liquid crystal display |
| WO2020000729A1 (en) * | 2018-06-25 | 2020-01-02 | 深圳市华星光电技术有限公司 | Reflective sheet, side-entry backlight module and liquid crystal display |
| CN113808478A (en) * | 2020-06-17 | 2021-12-17 | 北京小米移动软件有限公司 | Screen assembly, control method and control device thereof and electronic equipment |
| CN112558214A (en) * | 2020-12-09 | 2021-03-26 | Tcl通讯（宁波）有限公司 | Light guide plate structure, display device and electronic equipment |
| CN113138496A (en) * | 2021-04-16 | 2021-07-20 | 武汉华星光电半导体显示技术有限公司 | Backlight module and display device |
| CN114609720A (en) * | 2022-03-30 | 2022-06-10 | 深圳市光像素科技有限公司 | Light guide plate and manufacturing method thereof |
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Open date: 20070321 |