CN202102136U - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
- Publication number
- CN202102136U CN202102136U CN 201120170254 CN201120170254U CN202102136U CN 202102136 U CN202102136 U CN 202102136U CN 201120170254 CN201120170254 CN 201120170254 CN 201120170254 U CN201120170254 U CN 201120170254U CN 202102136 U CN202102136 U CN 202102136U
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- light
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- reflecting surface
- guide plate
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Abstract
The utility model discloses a light guide plate and a backlight module. The light guide plate comprises a reflecting surface, a light emergent surface and a light incident surface, the light incident surface is used for guiding light from a luminous light source into the light guide plate, the reflecting surface is parallel to the light emergent surface, the light emergent surface is connected with the light incident surface, the light incident surface is perpendicularly connected with the reflecting surface, a plurality of lattice points are arranged on the reflecting surface, and the density of the lattice points is gradually increased along the direction far away from the light incident surface. The light guide plate and the backlight module can prevent light in the light guide plate from generating total reflection on the reflecting surface, lead the light to be emitted out from an emitting surface of the light guide plate to the greatest extent, accordingly reduce loss of the light emitted out from the periphery of the light guide plate, and accordingly improve light utilization rate and light emergence uniformity.
Description
Technical field
The utility model relates to electronic display unit, relates in particular to a kind of LGP and module backlight.
Background technology
Liquid crystal indicator is a kind of non-self-emission display apparatus; It shows mainly passing through or the obstructed realization of coming by control light beam that external light source sends; Therefore need corresponding backlight module or preceding optical mode group usually; This module backlight or before the optical mode group can be with the beam direction display panel that external light source sent, thereby realize Presentation Function.Module backlight generally comprises the optical devices of light source and reflection and reflective functions, and wherein light source mainly is divided into two kinds: a kind of is that CCFL (CCFL), another kind are light emitting diode (LED).Module backlight generally all is at an end of core component LGP light emitting diode to be installed.For reaching the excellent requirement of slimming, high brightness, optical effect, the design of LGP is especially important that just show of structural design particularly.
Module backlight comprises optical modules such as light source, reflectance coating (sheet), LGP, diffuser plate and prism plate combination.This LGP comprises the plane of incidence, exit facet and reflecting surface (being the bottom surface).When incidence surface receives the light beam that the light source corresponding with it sends; And it is this light beam importing LGP is inner; Reflecting surface forms along the homodisperse scattered beam of all directions then with the beam reflection, the scattering that import, and exit facet is then derived LGP with homodisperse light beam.
Please refer to Fig. 1, be the synoptic diagram of the reflecting surface of existing LGP.Reflecting surface is to realize through site 101 to reflection, the scattering of light beam; Promptly be distributed with a plurality of sites of evenly arranging 101 on this reflecting surface; It will reflect from the light beam that the plane of incidence imports, scattering; And the diameter of this site 101 edge is away from the ascending variation of plane of incidence direction, and the also ascending variation of the spacing between each row's the site 101, thereby makes the light of site 101 spacings part be wasted because of total reflection; Light utilization efficiency is not high, and outgoing light homogeneity can not reach the requirement of display panels to the LGP outgoing light homogeneity.
The utility model content
The technical problem underlying that the utility model will solve is, a kind of LGP and module backlight are provided, and can avoid a large amount of light waste of causing because of the total reflection at reflecting surface, makes light evenly penetrate from exit facet, improves light utilization efficiency, improves outgoing light homogeneity simultaneously.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is following:
A kind of LGP; Comprise reflecting surface, exiting surface, and the interior incidence surface of light importing LGP that is used for the light source of autoluminescence in the future, said reflecting surface is parallel with said exiting surface; Said exiting surface links to each other with said incidence surface; Said incidence surface links to each other with said reflecting surface is vertical, and said reflecting surface is provided with a plurality of sites, and the density of a plurality of said sites increases along the direction away from incidence surface gradually.
Further, said site random alignment on said reflecting surface.
Further, said site injection moulding perhaps is compressed on the said reflecting surface.
Further, said site is spheroid or polyhedron.
Further, said net-point printing is arranged on the said reflecting surface.
Further, said site is silicon dioxide layer or titanium dioxide layer.
Further, the rounded or polygon in said site.
A kind of module backlight comprises illuminating source, also comprises above-mentioned LGP, and said illuminating source is corresponding with the incidence surface position of said LGP.
Further, said illuminating source is a light emitting diode.
Further, said LGP is the transparent plastic body LGP.The beneficial effect of the utility model is:
The utility model is through being provided with a plurality of sites on reflecting surface; And the density of a plurality of these sites increases along the direction away from the incidence surface of LGP gradually, in the linear light of illuminating source is injected this LGP, and when being mapped on the reflecting surface; A plurality of sites on this reflecting surface make that light can not be in reflecting surface generation total reflection; And reflex to the exiting surface of LGP with making the light maximum, thus make light maximum ground penetrate from the exiting surface of LGP, and then reduce the loss that light penetrates from the LGP periphery; Improve the utilization factor of light, improved outgoing light homogeneity simultaneously.
Description of drawings
The site synoptic diagram of the reflecting surface of the existing LGP of Fig. 1;
Fig. 2 is the synoptic diagram of reflecting surface of an embodiment of the LGP of the utility model;
Fig. 3 a, Fig. 3 b, Fig. 3 c and Fig. 3 d are respectively first kind of embodiment of the local site on the reflecting surface of LGP of the utility model, the synoptic diagram of second kind of embodiment, the third embodiment and the 4th kind of embodiment;
Fig. 4 is the structural representation of an embodiment of the module backlight of the utility model.
Embodiment
Combine accompanying drawing that the utility model is done further explain through embodiment below.
Please refer to Fig. 2 and Fig. 4, be the structural representation of the reflecting surface of an embodiment of the LGP of this embodiment.The LGP of this embodiment comprises reflecting surface 202, exiting surface 204, and the interior incidence surface 201 of light importing LGP that is used for the light source of autoluminescence in the future; Reflecting surface 202 is parallel with exiting surface 204; Exiting surface 204 links to each other with incidence surface 201, incidence surface 201 and 202 vertical linking to each other of reflecting surface, and this reflecting surface 202 is provided with a plurality of sites 203; These a plurality of sites 203 random alignment, and the density of these a plurality of sites 203 increases along the direction away from incidence surface 201 gradually.
Density in this embodiment is the ratio of summation and this unit area of the projected area of a plurality of sites 203 in the unit area.Minimum density in this embodiment is 0.2, promptly is provided with a site 203 on the unit area at least.
The site 203 of this embodiment is to be processed on the metal substrate, and is installed in the metal die, adopts injection moulding or die casting to be formed in the three-dimensional site on the reflecting surface 202 again.Please refer to Fig. 3 a, the three-dimensional site in this embodiment is regular polygon, and its xsect assumes diamond in shape; Please refer to Fig. 3 b, the three-dimensional site in this embodiment is regular polygon, and its xsect is regular hexagon; Please refer to Fig. 3 c and Fig. 3 d, the three-dimensional site in this embodiment is spheroid, and the density of the site among Fig. 3 b is less than the density of site among Fig. 3 d.
Please refer to Fig. 1; Inject the synoptic diagram of existing LGP for the light of illuminating source; When the light of illuminating source is injected in the LGP; Away from the light on the direction of illuminating source,, thereby make a large amount of light between this spacing on reflecting surface, total reflection take place and slattern because the spacing between the site increases.
The LGP of this embodiment; Through a plurality of sites 203 are set on reflecting surface 202, and the density of these a plurality of sites 203 increases along the direction away from illuminating source gradually, promptly destroys the total reflection that light takes place through a plurality of sites 203 that are arranged on the reflecting surface 202 on reflecting surface 202; Avoided causing the waste of a large amount of light because of total reflection; Thereby the light maximum is penetrated from the exiting surface of LGP, and then reduce light, improve the utilization factor of light from the loss that the LGP periphery penetrates; Density owing to a plurality of sites 203 increases along the direction away from illuminating source gradually simultaneously; Make the light away from the part of illuminating source also reflex to exiting surface, derive LGP by exiting surface again, improved outgoing light homogeneity through this site 203.
Certainly the site 203 in this embodiment both can for example adopt raw material printings such as silicon dioxide or titania to process for being arranged on the layer of reflective material on the reflecting surface 202.
This embodiment also provides a kind of module backlight, comprises illuminating source, also comprises above-mentioned LGP, and this illuminating source is corresponding with the incidence surface position of this LGP.Illuminating source in this embodiment is a light emitting diode, and LGP is the transparent plastic body LGP.
Below in conjunction with principle of work the module backlight of this embodiment is carried out detailed explanation.
Please refer to Fig. 2 and Fig. 3, the module backlight of this embodiment, the light of illuminating source is injected LGP 4 from the incidence surface 201 of LGP; Be mapped on the reflecting surface 202, because reflecting surface 202 is provided with a plurality of sites, and the density of these a plurality of sites increases along the direction away from illuminating source gradually again; When light was mapped to the site on the reflecting surface 202, the total reflection of light at reflecting surface 202 destroyed in this site, with the light maximum reflex to positive exiting surface 204; Thereby make light penetrate from the exit facet 204 of LGP 4; And then reduce light from the loss that LGP 4 peripheries penetrate, and improved the utilization factor of light, improved the outgoing light homogeneity of LGP 4 simultaneously.
Above content is the further explain that combines concrete embodiment that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of the utility model.
Claims (10)
1. a LGP comprises reflecting surface, exiting surface, and the interior incidence surface of light importing LGP that is used for the light source of autoluminescence in the future; Said reflecting surface is parallel with said exiting surface; Said exiting surface links to each other with said incidence surface, and said incidence surface links to each other with said reflecting surface is vertical, it is characterized in that; Said reflecting surface is provided with a plurality of sites, and the density of a plurality of said sites increases along the direction away from incidence surface gradually.
2. LGP as claimed in claim 1 is characterized in that said site is random alignment on said reflecting surface.
3. according to claim 1 or claim 2 LGP is characterized in that, said site injection moulding or be compressed on the said reflecting surface.
4. LGP as claimed in claim 3 is characterized in that said site is spheroid or polyhedron.
5. the LGP described in claim 1 or 2 is characterized in that, said net-point printing is arranged on the said reflecting surface.
6. LGP as claimed in claim 5 is characterized in that, said site is silicon dioxide layer or titanium dioxide layer.
7. LGP as claimed in claim 5 is characterized in that, the rounded or polygon in said site.
8. a module backlight comprises illuminating source, it is characterized in that, comprises that said illuminating source is corresponding with the incidence surface position of said LGP like any described LGP in the claim 1 to 7.
9. module backlight as claimed in claim 8 is characterized in that, said illuminating source is a light emitting diode.
10. module backlight as claimed in claim 8 is characterized in that, said LGP is the transparent plastic body LGP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120170254 CN202102136U (en) | 2011-05-24 | 2011-05-24 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120170254 CN202102136U (en) | 2011-05-24 | 2011-05-24 | Light guide plate and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202102136U true CN202102136U (en) | 2012-01-04 |
Family
ID=45388141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120170254 Ceased CN202102136U (en) | 2011-05-24 | 2011-05-24 | Light guide plate and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202102136U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707372A (en) * | 2012-06-28 | 2012-10-03 | 苏州佳宏光电有限公司 | Novel light guide plate |
| CN105572788A (en) * | 2014-08-18 | 2016-05-11 | 株式会社新谱 | Light guide plate, and backlight unit and display device including the same |
| CN106772771A (en) * | 2017-01-03 | 2017-05-31 | 合肥鑫晟光电科技有限公司 | Light guide plate, backlight module and display device |
| CN108627903A (en) * | 2017-03-17 | 2018-10-09 | 江苏日月照明电器有限公司 | A kind of light emission rate is high and smooth surface uniformly, the light guide plate of no visual spot |
| CN109782387A (en) * | 2016-11-25 | 2019-05-21 | 上海三思电子工程有限公司 | The method of light guide plate mesh point distribution randomization |
| CN110262122A (en) * | 2015-04-10 | 2019-09-20 | 株式会社日本显示器 | Display device, lighting device and light guide plate |
| CN112068353A (en) * | 2020-09-09 | 2020-12-11 | 深圳创维－Rgb电子有限公司 | Liquid crystal display module and liquid crystal splicing screen |
-
2011
- 2011-05-24 CN CN 201120170254 patent/CN202102136U/en not_active Ceased
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707372A (en) * | 2012-06-28 | 2012-10-03 | 苏州佳宏光电有限公司 | Novel light guide plate |
| CN105572783B (en) * | 2014-08-18 | 2019-01-15 | 株式会社新谱 | A kind of light guide plate, backlight module and display device containing the light guide plate |
| CN105572788A (en) * | 2014-08-18 | 2016-05-11 | 株式会社新谱 | Light guide plate, and backlight unit and display device including the same |
| CN105572783A (en) * | 2014-08-18 | 2016-05-11 | 株式会社新谱 | Light guide plate, and backlight unit and display device including the same |
| CN105572788B (en) * | 2014-08-18 | 2019-01-15 | 株式会社新谱 | A kind of light guide plate, backlight module and display device including the light guide plate |
| CN110262122A (en) * | 2015-04-10 | 2019-09-20 | 株式会社日本显示器 | Display device, lighting device and light guide plate |
| CN110262122B (en) * | 2015-04-10 | 2022-08-02 | 株式会社日本显示器 | Display device, lighting device, and light guide plate |
| CN109782387A (en) * | 2016-11-25 | 2019-05-21 | 上海三思电子工程有限公司 | The method of light guide plate mesh point distribution randomization |
| CN106772771B (en) * | 2017-01-03 | 2019-09-03 | 合肥鑫晟光电科技有限公司 | Light guide plate, backlight module and display device |
| CN106772771A (en) * | 2017-01-03 | 2017-05-31 | 合肥鑫晟光电科技有限公司 | Light guide plate, backlight module and display device |
| US11262493B2 (en) | 2017-01-03 | 2022-03-01 | Boe Technology Group Co., Ltd. | Light guide plate, backlight module and display device |
| CN108627903A (en) * | 2017-03-17 | 2018-10-09 | 江苏日月照明电器有限公司 | A kind of light emission rate is high and smooth surface uniformly, the light guide plate of no visual spot |
| CN112068353A (en) * | 2020-09-09 | 2020-12-11 | 深圳创维－Rgb电子有限公司 | Liquid crystal display module and liquid crystal splicing screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Technology Co., Ltd. Hui Library Assignor: Shenzhen Techaser Technologies Co., Ltd. Contract record no.: 2015440020308 Denomination of utility model: Light conducting board and backlight module Granted publication date: 20120104 License type: Exclusive License Record date: 20150826 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20181127 Decision number of declaring invalidation: 37942 Granted publication date: 20120104 |
|
| IW01 | Full invalidation of patent right |