CN202256752U - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
- Publication number
- CN202256752U CN202256752U CN2011203769510U CN201120376951U CN202256752U CN 202256752 U CN202256752 U CN 202256752U CN 2011203769510 U CN2011203769510 U CN 2011203769510U CN 201120376951 U CN201120376951 U CN 201120376951U CN 202256752 U CN202256752 U CN 202256752U
- Authority
- CN
- China
- Prior art keywords
- light
- face
- lgp
- backlight module
- array
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a light guide plate and a backlight module. The light guide plate and the backlight module are designed mainly aiming at a problem that complicated structure, and comparatively complex assembling procedures of a prior backlight module are easy to cause a high reject ratio of the prior backlight module. In the utility model, a light outgoing end face of the light guide plate and an end face opposite to the light outgoing end face are both provided with micro lens array structures. The micro lens array structure of the light outgoing end face is an embossing array structure while the micro lens array structure on the end face opposite to the light outgoing end face is a sunken array structure. The light guide plate in the utility model not only can convert a linear light source to a plane light source, but also can uniform outgoing light, thereby eliminating a diffusion barrier in the prior backlight module and realizing a structure formed by combining the outgoing light end face of the light guide plate with a prism film group directly. Therefore, a structure of the backlight module is simplified further. The thin-type structure facilitates integration. At the same time, working procedures of backlight module assembly are reduced, thereby reducing the reject ratio in a production process of the backlight module.
Description
Technical field
The utility model relates to the Backlight For Liquid Crystal Display Panels technology, relates in particular to a kind of LGP and backlight source module.
Background technology
At present, the Backlight For Liquid Crystal Display Panels module is taked following two kinds of versions usually; First kind, as shown in Figure 1, comprising: reflectance coating 1, LGP 2, light source 3, diffusion barrier 4, prism film 5 and composite prism film 6.As can be seen from the figure the bright dipping side of LGP 2 is the three-decker that is made up of diffusion barrier 4, prism film 5 and composite prism film 6; Second kind, as shown in Figure 2, comprising: reflectance coating 1, LGP 2, light source 3, diffusion barrier 4, two-layer prism film 5 and diaphragm 7.
Can find out that from above-mentioned two kinds of backlight source module forms the bright dipping side of LGP all need be provided with a diffusion barrier could realize penetrating the distribution of light uniform surface light source.The backlight source module that comprises this LGP, its complex structure, assembling procedure is more loaded down with trivial details, is prone to cause the bad of backlight.
The utility model content
To the problems referred to above, the utility model provides a kind of diffusion barrier that need not also can realize the uniform LGP of distribution of light; And a kind of simple in structure, the little and simple backlight source module of assembling procedure of thickness.
For achieving the above object, the said LGP of the utility model, its light exit side face and this light exit side face the side end face is equipped with the microlens array structure; Wherein, the microlens array structure of light exit side face is the array of protrusions structure, and being in said light exit side is the array of depressions structure in the face of the microlens array structure of side end face.
Further, said array of protrusions structure is the hemispherical projections array structure.
Further, said array of depressions structure is the hemispherical depression array structure.
Preferably, the cross section camber line of said hemispherical projections or depression is circular arc or para-curve.
For achieving the above object, the said backlight source module of the utility model comprises: LGP and the prism film group that is arranged on said LGP bright dipping side; Wherein,
Said LGP, its light exit side face and this light exit side face the side end face is equipped with the microlens array structure; Wherein, the microlens array layer structure of light exit side face is the array of protrusions structure, and being in said light exit side is the array of depressions structure in the face of the microlens array structure of the end face of side;
Wherein, said array of protrusions structure optimization is the spherical array of protrusions structure of semicircle; Said array of depressions structure optimization is the spherical array of depressions structure of semicircle.
Further, said prism film group is made up of prism film and composite prism film.
The beneficial effect of the utility model is:
1, the both sides end face of the said LGP of the utility model is all taked the microlens array structure; LGP not only can make line source be transformed into area source; Simultaneously can also make the outgoing light uniformization; Thereby can remove diffusion barrier in the existing backlight source module, realize that the emergent light end face side of LGP directly adds the structure of prism film group.
2, adopt the said LGP of the utility model; Can be according to the demand of emergent ray; Regulate the shape and the density of the microlens array of LGP bottom notch array structure; Can change radiation direction, realize the even light and the light harvesting effect of microlens array LGP, improve the brightness of entire backlight source module through LGP.
3, removed diffusion barrier in the backlight source module, backlight source module is further simplified like this, and slimming is integrated more easily, reduces the operation of assembling backlight simultaneously, thereby can reduce backlight bad in producing.
Description of drawings
Fig. 1 is the backlight source module of first kind of version;
Fig. 2 is the backlight source module of second kind of version;
Fig. 3 is the structural representation of the said LGP of the utility model;
Fig. 4 is the schematic diagram that first kind of incident angle light is incident to microlens array;
Fig. 5 is the schematic diagram that second kind of incident angle light is incident to microlens array;
Fig. 6 is the schematic diagram that the third incident angle light is incident to microlens array;
Fig. 7 is the synoptic diagram of the said backlight source module of the utility model.
Embodiment
Below in conjunction with Figure of description the utility model is done further description.
As shown in Figure 3, the said LGP 2 of the utility model, its light exit side face 201 and this light exit side face side end face 202 is equipped with the microlens array structure; Wherein, the microlens array layer structure of light exit side face 201 is the array of protrusions structure, and being in said light exit side is the array of depressions structure in the face of the microlens array structure of the end face 202 of side.
Preferably, said array of protrusions structure is the hemispherical projections array structure.Said array of depressions structure is the hemispherical depression array structure.The cross section camber line of described hemispherical projections and hemispherical depression can be the camber line of circular arc line, para-curve or other types.The utility model is not limited only to this; Said array of protrusions structure and array of depressions structure can also be the array structures of other shapes; Concrete array structure can be regulated the lenticular version of LGP upper and lower surfaces according to the condition of incident ray, and LGP just can reach outstanding even light and light harvesting effect.
Adopt above-mentioned upper and lower end face all to have the LGP of microlens array, can make through the emergent light of LGP homogenising more.Its principle is:
Said bottom surface of light guide plate is the microlens array of the spherical array of depressions structure of semicircle can realize the conversion of the line source of common LGP to area source, and the microlens array that is the spherical array of protrusions structure of semicircle of LGP bright dipping side end face can be realized the homogenising of emergent ray.
To shown in Figure 6, the microlens structure of the exiting surface of said LGP is to the synoptic diagram that influences of light like Fig. 4.
According to refraction law n
1Sina
1=n
2Sina
2, wherein, n
1Be the refractive index of LGP, n
2Be air refraction n
2=1.Therefore above-mentioned formula can be reduced to n
1Sina
1=sina
2Among Fig. 4, light 21 is the emergent ray of common LGP, and light 22 is for having the emergent ray of microlens array structure LGP.Because so incident angle a＜c is emergence angle b＜d.Microlens structure can be realized divergence of beam, and the lenticule LGP can be realized equalizing light rays.Among Fig. 5, light 31 is the emergent ray of common LGP, and light 32 is for having the emergent ray of microlens array structure LGP.Since incident angle a=c, thus emergence angle b=d, through the not variation of light of microstructure.Among Fig. 6, light 41 is the emergent ray of common LGP, and light 42 is for having the emergent ray of microlens array structure LGP.Because so incident angle a＞c is emergence angle b＞d.Microlens structure can be realized convergence of rays, and the lenticule LGP can be realized light light harvesting effect.
Therefore according to demand, regulate the shape and the density of the microlens array of LGP bottom notch array structure, can change radiation direction, realize the even light effect of microlens array LGP, improve the brightness of entire backlight source module through LGP.Use the backlight source module of LGP according to the invention not only can not use diffusion barrier; Can also in existing backlight source module (backlight source module as depicted in figs. 1 and 2), use LGP according to the invention to improve the brightness of backlight source module, even can also reduce by a prism film and use.
In addition; Need to prove: the density of the microlens array of the bottom notch array structure of the described LGP of the utility model can be inconsistent on whole LGP; As shown in Figure 3, the density of microlens array can be gradual change on whole LGP, but is not limited only to this.
As shown in Figure 5, the said backlight source module of the utility model comprises: LGP 2 and the prism film group that is arranged on said LGP 2 bright dipping sides; Wherein,
Said LGP 2, its light exit side face 201 and this light exit side face side end face 202 is equipped with the microlens array structure; Wherein, the microlens array layer structure of light exit side face 201 is the array of protrusions structure, and being in said light exit side is the array of depressions structure in the face of the microlens array structure of the end face 202 of side;
Said prism film group is made up of prism film 5 and composite prism film 6.
Wherein, said array of protrusions structure optimization is the spherical array of protrusions structure of semicircle; Said array of depressions structure optimization is the spherical array of depressions structure of semicircle.
The utility model changes the version of backlight through the version that changes LGP.Microlens array has well even luminous effect, the lenticular version of regulating the LGP upper and lower surfaces, and LGP can reach outstanding even light and light harvesting effect.Thereby just can remove diffusion sheet in the backlight source module, realize the backing structure of LGP, prism film, composite prism film, the assembling procedure of the backlight of this structure reduces, and has reduced produce in producing bad, helps the lightening development of backlight.
More than; Be merely the preferred embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain that claim was defined.
Claims (6)
1. a LGP is characterized in that, the light exit side face of said LGP and this light exit side face the side end face is equipped with the microlens array structure; Wherein, the microlens array structure of light exit side face is the array of protrusions structure, and being in said light exit side is the array of depressions structure in the face of the microlens array structure of side end face.
2. according to the said LGP of claim 1, it is characterized in that said array of protrusions structure is the hemispherical projections array structure.
3. according to the said LGP of claim 1, it is characterized in that said array of depressions structure is the hemispherical depression array structure.
4. according to claim 2 or 3 said LGPs, it is characterized in that the cross section camber line of said hemispherical projections or depression is circular arc or para-curve.
5. a backlight source module is characterized in that, comprising: LGP and the prism film group that is arranged on said LGP bright dipping side; Wherein, said LGP is any one a described LGP in the claim 1 to 3.
6. according to the said backlight source module of claim 5, it is characterized in that said prism film group is made up of prism film and composite prism film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203769510U CN202256752U (en) | 2011-09-28 | 2011-09-28 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203769510U CN202256752U (en) | 2011-09-28 | 2011-09-28 | Light guide plate and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202256752U true CN202256752U (en) | 2012-05-30 |
Family
ID=46117971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203769510U Expired - Lifetime CN202256752U (en) | 2011-09-28 | 2011-09-28 | Light guide plate and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202256752U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515029A (en) * | 2013-09-26 | 2015-04-15 | 展晶科技(深圳)有限公司 | Lateral type backlight module |
| CN105372739A (en) * | 2015-11-13 | 2016-03-02 | 重庆鑫翎创福光电科技股份有限公司 | PS light guide plate with prism structure |
| CN107219584A (en) * | 2015-12-29 | 2017-09-29 | 佛山市顺德区德联邦盛光电科技有限公司 | A kind of light guide plate in parabolic cylinder ball adding point face |
| CN108571710A (en) * | 2018-05-17 | 2018-09-25 | 浙江彩丞照明科技有限公司 | A kind of anti-dazzle light diffusing sheet and LED light device for eliminating moire |
| CN108732823A (en) * | 2018-08-03 | 2018-11-02 | 广东烨嘉光电科技股份有限公司 | A kind of back light system of head-up display device |
| CN109307904A (en) * | 2017-07-28 | 2019-02-05 | 盐城三鼎电子科技有限公司 | A kind of backlight source light conducting plate with site |
| CN115469479A (en) * | 2022-08-18 | 2022-12-13 | 苏州华星光电技术有限公司 | Optical film and backlight module |
-
2011
- 2011-09-28 CN CN2011203769510U patent/CN202256752U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515029A (en) * | 2013-09-26 | 2015-04-15 | 展晶科技(深圳)有限公司 | Lateral type backlight module |
| CN105372739A (en) * | 2015-11-13 | 2016-03-02 | 重庆鑫翎创福光电科技股份有限公司 | PS light guide plate with prism structure |
| CN107219584A (en) * | 2015-12-29 | 2017-09-29 | 佛山市顺德区德联邦盛光电科技有限公司 | A kind of light guide plate in parabolic cylinder ball adding point face |
| CN109307904A (en) * | 2017-07-28 | 2019-02-05 | 盐城三鼎电子科技有限公司 | A kind of backlight source light conducting plate with site |
| CN109307904B (en) * | 2017-07-28 | 2020-09-25 | 盐城三鼎电子科技有限公司 | Backlight light guide plate with mesh points |
| CN108571710A (en) * | 2018-05-17 | 2018-09-25 | 浙江彩丞照明科技有限公司 | A kind of anti-dazzle light diffusing sheet and LED light device for eliminating moire |
| CN108732823A (en) * | 2018-08-03 | 2018-11-02 | 广东烨嘉光电科技股份有限公司 | A kind of back light system of head-up display device |
| CN108732823B (en) * | 2018-08-03 | 2023-08-08 | 广东烨嘉光电科技股份有限公司 | Backlight system of head-up display device |
| CN115469479A (en) * | 2022-08-18 | 2022-12-13 | 苏州华星光电技术有限公司 | Optical film and backlight module |
| CN115469479B (en) * | 2022-08-18 | 2024-03-01 | 苏州华星光电技术有限公司 | Optical film and backlight module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202256752U (en) | Light guide plate and backlight module | |
| US11402563B2 (en) | Optical device | |
| CN102588835B (en) | A kind of novel backlight module for liquid crystal display | |
| CN102588845B (en) | Back lighting device and liquid crystal display device | |
| CN101369031A (en) | Glass prism sheet and LCD device adopting the same | |
| CN101520522B (en) | Integrated brightening diffusion sheet | |
| JP2006114239A (en) | Planar light source, light guide body for planar light source and manufacturing method therefor, lighting device, signboard and liquid crystal display | |
| CN108845461B (en) | Backlight module and liquid crystal display device | |
| US20090097245A1 (en) | Prism sheet and backlight module using the same | |
| CN101561588A (en) | Backlight module and an optical target thereof | |
| CN105511012A (en) | Light guide structure for implementing polarization collimation surface light sources | |
| CN105676340B (en) | Polarization multiplexing light guide structure of composite parabolic reflection micro-collimating lens and implementation method thereof | |
| CN101261390A (en) | Combined optical substrate | |
| KR20130126546A (en) | Optical films laminate and backlight unit having enhanced optical performance | |
| CN101363926A (en) | Lcd device and prismatic lens thereof | |
| CN103822139A (en) | Backlight source module and display device | |
| CN101620341A (en) | Backlight module and optical plate thereof | |
| CN217932155U (en) | Backlight module | |
| CN203349049U (en) | Light source module and keyboard with same | |
| CN205539551U (en) | Two sides has diffuser plate of prism micro -structure | |
| CN203385886U (en) | Positioning structure of light guide plate | |
| CN116719116A (en) | Light guide plate and display assembly | |
| CN102518982A (en) | Backlight module and manufacturing method thereof as well as liquid crystal display device | |
| WO2024000779A1 (en) | Light guide plate and display assembly | |
| CN101620340A (en) | Backlight module and optical plate thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150703 Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150703 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150703 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100176, No. 8, Middle West Road, Beijing economic and Technological Development Zone, Beijing Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |