CN2586979Y - Liquid crystal display module - Google Patents
Liquid crystal display module Download PDFInfo
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- CN2586979Y CN2586979Y CN 02249980 CN02249980U CN2586979Y CN 2586979 Y CN2586979 Y CN 2586979Y CN 02249980 CN02249980 CN 02249980 CN 02249980 U CN02249980 U CN 02249980U CN 2586979 Y CN2586979 Y CN 2586979Y
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- lcd module
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Abstract
一种液晶显示模块，其包括一液晶面板和一背光模块，其中，该背光模块包括一光源、一用以接收光源发出的光束的导光板、一用以将导光板导出的光束扩散后导出的扩散板和一反射偏光板，其中该反射偏光板将该光束的S偏光导向液晶面板，并反射该光束的P偏光部分。该扩散板的表面设置多个棱镜结构，该棱镜结构可将反射偏光板反射的P偏光部分反射、散射，重新形成一具P偏光及S偏光的光束，提高光源发光利用率，进而提高液晶面板的显示亮度。
A liquid crystal display module, which includes a liquid crystal panel and a backlight module, wherein the backlight module includes a light source, a light guide plate used to receive the light beam emitted by the light source, and a light guide plate used to diffuse the light beam exported by the light guide plate and then guide it out A diffusion plate and a reflective polarizer, wherein the reflective polarizer guides the S-polarized light of the light beam to the liquid crystal panel and reflects the P-polarized part of the light beam. The surface of the diffusion plate is provided with a plurality of prism structures, which can reflect and scatter the P polarized light part reflected by the reflective polarizing plate, and re-form a beam of P polarized light and S polarized light, thereby improving the light utilization rate of the light source, and further improving the performance of the liquid crystal panel. display brightness.
Description
[technical field]
The utility model relates to a kind of display device, particularly relates to the higher LCD MODULE of a kind of brightness.
[background technology]
LCD MODULE 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 or front optical module, this backlight or front optical module can be realized Presentation Function with the beam direction display panel that external light source sent.
Seeing also Fig. 1, is a kind of sectional view of prior art LCD MODULE 10, and this LCD MODULE 10 comprises a liquid crystal panel 11 and a backlight module 12.This backlight module 12 comprises a light source 121, a light source cover 122, a reflecting plate 123, a light guide plate 124 and a reflection Polarizer 125.Wherein this light source 121 is positioned at one of light guide plate 124 side, this light source cover 122 is positioned at the opposite side of light source 121 relative light guide plate 124, reflect the light beam that this light source 121 sends, to increase the light intensity that imports light guide plate 124, this reflecting plate 123, light guide plate 124 and reflection Polarizer 125 stack gradually placement, and this reflection Polarizer 125 is between light guide plate 124 and liquid crystal panel 11.The light beam that is sent by light source 121 can be considered by orthogonal P polarisation of two polarization states and S polarisation to be formed, this light guide plate 124 and reflecting plate 123 are with this beam direction reflection Polarizer 125, this reflection Polarizer 125 will be parallel to the S polarisation guiding liquid crystal panel 11 of reflection Polarizer 125 polarization states, and reflection is perpendicular to the P polarisation of reflection Polarizer 125 polarization states.The P polarisation of this reflection passes light guide plate 124, and through being converted to intensity more weak P polarisation and S polarisation relatively after the reflection of reflecting plate 123 again, so can increase the utilization factor that light source 121 sends light beam.
But the P polarisation that reflexes to light guide plate 124, reflecting plate 123 via reflection Polarizer 125 is absorbed major part by the light beam that light source 121 sends, and the utilization factor that causes light source 121 to send light beam improves less.Simultaneously because this backlight module 12 do not adopt diffuser plate or corresponding function assembly, cause by the beam distribution of reflection Polarizer 125 inhomogeneous, thereby liquid crystal panel 11 display effects are relatively poor.
See also Fig. 2, it is the United States Patent (USP) the 6th of bulletin on September 10th, 2002,448, a kind of LCD MODULE 20 sectional views that disclosed for No. 955, this LCD MODULE 20 comprises a liquid crystal panel 21 and a backlight module 22, and this liquid crystal panel 21 comprises one first substrate 211, a liquid crystal layer 212 and one second substrate 213.This backlight module 22 comprise two light sources 221, respectively with two light sources, 221 corresponding two light source covers 222, respectively with light source 221 corresponding light guide plate 224, a reflecting plate 223, a diffuser plate 225, a blast sheet (Brightness Enhance Film, BEF) 226, one reflection Polarizer (DoubleBrightness Enhance Film, DBEF) 227 and one overlayer 228.
Please consult Fig. 3 together, during these LCD MODULE 20 work, light source 221 sends one and can be considered the light beam of being made up of orthogonal P polarisation of polarization attitude and S polarisation, this light beam is via light guide plate 224, diffuser plate 225 and blast sheet 226 backs arrive reflection Polarizer 227, wherein the polarization state of this P polarisation is perpendicular to the polarization state of reflection Polarizer 227, the polarization state of this S polarisation is parallel to the polarization state that reflects Polarizer 227, so only the S polarisation can be by reflection Polarizer 227, and Polarizer 227 reflection that is reflected of P polarisation, the P polarisation of this reflection is through blast sheet 226, diffuser plate 225, again convert relative more weak S polarisation of intensity and P polarisation to behind light guide plate 224 and the reflecting plate 223, wherein S polarisation part will be by reflection Polarizer 227, and the P polarisation is reflected.This backlight module 22 adopts diffuser plate 225, can realize the even outgoing of light beam.But, absorbed by the light beam that light source 221 sends by the P polarisation major part of these reflection Polarizer 227 reflections, through a plurality of interfaces, its energy will weaken when the P polarisation of this reflection simultaneously is converted to S polarisation and P polarisation again, and the utilization factor again of folded light beam is lower.
[utility model content]
In order to overcome the lower defective of prior art LCD MODULE light source luminescent utilization factor, the utility model provides a kind of LCD MODULE, and this LCD MODULE has higher light source luminescent utilization factor, thereby brightness is higher.
The technical scheme that the utility model technical solution problem is adopted is: a LCD MODULE is provided, it comprises a liquid crystal panel and a backlight module, wherein, this backlight module comprises a light source, one in order to receive the light guide plate of the light beam that light source sends, one a diffuser plate and a reflection Polarizer in order to derive after the beam spread that light guide plate is derived, this reflection Polarizer is with the S polarisation guiding liquid crystal panel of this light beam, and the P polarisation part that reflects this light beam, wherein, this light guide plate, diffuser plate and the stacked in regular turn placement of reflection Polarizer, light guide plate is positioned at this light source one side, and this diffuser plate is provided with a plurality of prism structures towards the surface of this reflection polarization direction.
Compare with prior art, the utlity model has following advantage: because the diffuser plate of the utility model LCD MODULE is adjacent with this reflection Polarizer, the P polarisation that reflects from this reflection Polarizer shines directly into this diffuser plate surface, and this diffuser plate surface is provided with a plurality of prism structures, this prism structure can be converted to a part of P polarisation of reflection Polarizer reflection the light beam of one tool P polarisation and S polarisation again, need not through the light guide plate under this diffuser plate and this diffuser plate, and carry out polarisation conversion by the effect of the reflecting plate under this light guide plate, the P polarisation that can reduce the reflection of this reflection Polarizer forms the light beam of a tool P polarisation and S polarisation again and needs the interface of process, reduce interface loss, thereby improve the light source luminescent utilization factor, and then increase the display brightness of liquid crystal panel.In addition, but this surface is the diffuser plate collected light of prism structure, and then improves the backlight illumination through its outgoing.
[description of drawings]
Fig. 1 is a kind of sectional view of prior art LCD MODULE.
Fig. 2 is the sectional view of another kind of prior art LCD MODULE.
Fig. 3 is the index path of the LCD MODULE of Fig. 2.
Fig. 4 is the sectional view of first embodiment of the utility model LCD MODULE.
Fig. 5 is the index path of LCD MODULE shown in Figure 4.
Fig. 6 is the prism structure stereographic map of diffuser plate shown in Figure 4.
Fig. 7 is the stereographic map of another embodiment of prism structure of diffuser plate shown in Figure 4.
Fig. 8 is the sectional view of second embodiment of the utility model LCD MODULE.
[embodiment]
Seeing also Fig. 4, is the first embodiment sectional view of the utility model LCD MODULE, and this LCD MODULE comprises a liquid crystal panel 31 and a backlight module 32.This backlight module 32 comprises a light source 321, a light source cover 322, a reflecting plate 323, a light guide plate 324, a diffuser plate 325 and a reflection Polarizer 326.Light source 321 is positioned at light guide plate 324 1 sides, and light source cover 322 is positioned at the opposite side of light source 32 1 relative light guide plate 324, and reflecting plate 323, light guide plate 324, diffuser plate 325 and reflection Polarizer 326 stack in regular turn.Diffuser plate 325 reflection Polarizer 326 1 side surfaces relatively is provided with a plurality of V-shaped grooves (figure does not indicate), forms a plurality of prism structures 1.
See also Fig. 5, the light beam that light source 321 sends enters light guide plate 324, by light guide plate 324 and reflecting plate 323 with this beam direction diffuser plate 325, reflection Polarizer 326.This light beam can be considered by orthogonal P polarisation of polarization attitude and S polarisation to be formed, and wherein the S polarisation is by reflection Polarizer 326, and the P polarisation Polarizer 326 that then is reflected reflexes to diffuser plate 325.Prism structure 1 reflection, this P polarisation of scattering on diffuser plate 325 surfaces form the less relatively light beam of energy again subsequently, and this light beam also can be considered by orthogonal P polarisation of polarization attitude and S polarisation to be formed.After this light beam arrived reflection Polarizer 326, wherein the S polarisation was by reflection Polarizer 326, Polarizer 326 reflections that are reflected of P polarisation.Like this, the cyclic transformation between reflection Polarizer 326, diffuser plate 325 of P polarisation in the light beam is corresponding P polarisation and S polarisation, need not through the light guide plate 324 under this diffuser plate 325 and this diffuser plate 325, and carry out polarisation conversion by the effect of the reflecting plate under the light guide plate 324 323, thereby can reduce the interface that light beam sees through, reduce the interface loss of energy, and then improve light source 321 luminous utilization factors, reach the purpose that increases liquid crystal panel 31 display brightness.
Please consult Fig. 6 and Fig. 7 together, this diffuser plate 325 can evenly be provided with V-shaped groove along a parallel direction, forms parallel bar shaped prism structure 11.This diffuser plate 325 also can evenly be provided with V-shaped groove along two vertical direction simultaneously, forms equally distributed pyramid prism structure 12.
Seeing also Fig. 8, is the second embodiment sectional view of the utility model LCD MODULE, and this LCD MODULE comprises a liquid crystal panel 41 and a backlight module 42.This backlight module 42 comprises a light source 421, a light source cover 422, a light guide plate 424, the reflectance coating 423 that is formed at light guide plate 424 surfaces, a diffuser plate 425, a blast sheet 426 and a reflection Polarizer 427.This LCD MODULE is compared with LCD MODULE shown in Figure 4, difference is that light guide plate 424 is wedge shape, these light guide plate 424 tool reflectance coatings 423 are to substitute the reflecting plate 323 of first embodiment, and it sets up a blast sheet 426 between diffuser plate 425 and reflection Polarizer 427.This blast sheet 426 can make this LCD MODULE obtain higher brightness.
The light beam that light source 421 sends enters light guide plate 424, by light guide plate 424 and reflectance coating 423 with this beam direction diffuser plate 425, blast sheet 426 and reflection Polarizer 427.This light beam can be considered by orthogonal P polarisation of polarization attitude and S polarisation to be formed, and wherein the S polarisation is by reflection Polarizer 427, Polarizer 427 reflection that is reflected of P polarisation.The P polarisation of this reflection arrives diffuser plate 425 via blast sheet 426.Prism structure 2 reflections on diffuser plate 425 surfaces, this P polarisation of scattering form the less relatively light beam of energy again, and this light beam also can be considered by orthogonal P polarisation of polarization attitude and S polarisation to be formed.This light beam arrives reflection Polarizers 427 by blast sheet 426 back, and wherein the S polarisation is by reflection Polarizer 427, Polarizer 427 reflections that are reflected of P polarisation.Like this, the cyclic transformation between reflection Polarizer 427, blast sheet 426 and diffuser plate 425 of P polarisation in the light beam is corresponding P polarisation and S polarisation, need not through the light guide plate 424 under this diffuser plate 425 and this diffuser plate 425, and carry out polarisation conversion by the effect of 424 times reflectance coatings 423 of light guide plate, can reduce the interface that light beam sees through, reduce the interface loss of energy, and then improve light source 421 luminous utilization factors, reach the purpose that increases liquid crystal panel 41 display brightness.
Aforesaid LCD MODULE, the light source of its backlight module can adopt a plurality of, and this light source can be pointolite or area source, and the side of its relative light guide plate is provided with.The prism structure on diffuser plate surface is not limited only to even distribution, also can be set to uneven distribution.This light guide plate can be plate shaped or wedge shape, and the opposite side of its relative diffusion plate can be provided with a plurality of sites.
Claims (10)
1. LCD MODULE, it comprises a liquid crystal panel and a backlight module, wherein, this backlight module comprises: a light source, is used to receive diffuser plate and the reflection Polarizer of light guide plate, in order to derive after the beam spread that light guide plate is derived of the light beam that light source sends, this light source is positioned at light guide plate one side, this reflection Polarizer is with the S polarisation guiding liquid crystal panel of this light beam, and the P polarisation part that reflects this light beam, it is characterized in that: the stacked in regular turn placement of this light guide plate, diffuser plate and reflection Polarizer, the surface of this diffuser plate is provided with a plurality of prism structures.
2. LCD MODULE as claimed in claim 1 is characterized in that: it further comprises a reflecting plate, and this reflecting plate is positioned at the opposite side of this LCD MODULE relative diffusion plate.
3. LCD MODULE as claimed in claim 1 is characterized in that: the prism structure of this diffuser plate is even or uneven distribution.
4. LCD MODULE as claimed in claim 1 is characterized in that: this diffuser plate prism structure is parallel strip structure or parallel pyramid structure.
5. LCD MODULE as claimed in claim 1 is characterized in that: this diffuser plate prism structure is strip structure or pyramid structure.
6. LCD MODULE as claimed in claim 1 is characterized in that: it further comprises a light source cover, and this light source cover is positioned at light source one side.
7. LCD MODULE as claimed in claim 1, it further comprises a blast sheet, this blast sheet is between diffuser plate and reflection Polarizer.
8. LCD MODULE as claimed in claim 1, wherein this LCD MODULE is plate shaped or wedge shape.
9. LCD MODULE as claimed in claim 1, wherein this light source is pointolite or line source.
10. LCD MODULE as claimed in claim 1, wherein the opposite side tool reflectance coating of this LCD MODULE relative diffusion plate or a plurality of sites that distribute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249980 CN2586979Y (en) | 2002-11-29 | 2002-11-29 | Liquid crystal display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249980 CN2586979Y (en) | 2002-11-29 | 2002-11-29 | Liquid crystal display module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2586979Y true CN2586979Y (en) | 2003-11-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02249980 Expired - Lifetime CN2586979Y (en) | 2002-11-29 | 2002-11-29 | Liquid crystal display module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2586979Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350218C (en) * | 2004-02-19 | 2007-11-21 | 友达光电股份有限公司 | Position code sensing device and method and system for sensing position on display |
| CN100489618C (en) * | 2004-04-27 | 2009-05-20 | 三星电子株式会社 | Brightness enhancement film for liquid crystal display and method of manufacturing the same |
| US7572490B2 (en) | 2004-04-27 | 2009-08-11 | Samsung Electronics Co., Ltd. | Brightness enhancement film for liquid crystal display and manufacturing method thereof |
| WO2015010418A1 (en) * | 2013-07-26 | 2015-01-29 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN105842903A (en) * | 2015-02-03 | 2016-08-10 | 住友化学株式会社 | Polarizing plate, liquid crystal panel and liquid crystal display device |
| CN106908874A (en) * | 2016-01-14 | 2017-06-30 | 宁波长阳科技股份有限公司 | A kind of composite brightening film and backlight module |
| CN107450233A (en) * | 2017-09-15 | 2017-12-08 | 广东朝野科技有限公司 | A kind of straight-down negative LED liquid crystal television backing structure of low-power consumption |
| CN107885022A (en) * | 2017-12-28 | 2018-04-06 | 深圳市华星光电技术有限公司 | Double-lens laser projector display device and its application method |
| CN111722433A (en) * | 2019-03-22 | 2020-09-29 | 中强光电股份有限公司 | Light source module and display device |
-
2002
- 2002-11-29 CN CN 02249980 patent/CN2586979Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350218C (en) * | 2004-02-19 | 2007-11-21 | 友达光电股份有限公司 | Position code sensing device and method and system for sensing position on display |
| CN100489618C (en) * | 2004-04-27 | 2009-05-20 | 三星电子株式会社 | Brightness enhancement film for liquid crystal display and method of manufacturing the same |
| US7572490B2 (en) | 2004-04-27 | 2009-08-11 | Samsung Electronics Co., Ltd. | Brightness enhancement film for liquid crystal display and manufacturing method thereof |
| US7776411B2 (en) | 2004-04-27 | 2010-08-17 | Samsung Electronics Co., Ltd | Brightness enhancement film for liquid crystal display and manufacturing method thereof |
| WO2015010418A1 (en) * | 2013-07-26 | 2015-01-29 | 京东方科技集团股份有限公司 | Backlight module and display device |
| US9618684B2 (en) | 2013-07-26 | 2017-04-11 | Boe Technology Group Co., Ltd. | Backlight module and display device |
| CN105842903A (en) * | 2015-02-03 | 2016-08-10 | 住友化学株式会社 | Polarizing plate, liquid crystal panel and liquid crystal display device |
| CN106908874A (en) * | 2016-01-14 | 2017-06-30 | 宁波长阳科技股份有限公司 | A kind of composite brightening film and backlight module |
| CN106908874B (en) * | 2016-01-14 | 2019-04-05 | 宁波长阳科技股份有限公司 | A kind of composite brightening film and backlight module |
| CN107450233A (en) * | 2017-09-15 | 2017-12-08 | 广东朝野科技有限公司 | A kind of straight-down negative LED liquid crystal television backing structure of low-power consumption |
| CN107885022A (en) * | 2017-12-28 | 2018-04-06 | 深圳市华星光电技术有限公司 | Double-lens laser projector display device and its application method |
| CN111722433A (en) * | 2019-03-22 | 2020-09-29 | 中强光电股份有限公司 | Light source module and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121129 Granted publication date: 20031119 |