CN202101082U - Backlight module and LCD (liquid crystal display) device - Google Patents
Backlight module and LCD (liquid crystal display) device Download PDFInfo
- Publication number
- CN202101082U CN202101082U CN2011201990123U CN201120199012U CN202101082U CN 202101082 U CN202101082 U CN 202101082U CN 2011201990123 U CN2011201990123 U CN 2011201990123U CN 201120199012 U CN201120199012 U CN 201120199012U CN 202101082 U CN202101082 U CN 202101082U
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- backlight module
- light source
- module
- diffuser plate
- light
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Abstract
The utility model provides a backlight module and an LCD (liquid crystal display) device, belonging to the field of LCD. The backlight module comprises a light source, a reflecting sheet with scattering lattice points on the surface and a diffusion plate with reflecting lattice points on the surface, wherein the surface of the diffusion plate with the reflecting lattice points and the surface of the reflecting sheet with the scattering lattice points are oppositely arranged, and a light source is arranged at the side end between the reflecting sheet and the diffusion plate. As the reflecting lattice points and the scattering lattice points are reasonably arrayed and distributed, the emitting luminous flux at different positions on the diffusion plate can be controlled; therefore, the diffusion plate can carry out uniform light emission. The module does not need a light guide plate and a plurality of LEDs (light emitting diodes); moreover, the light emitting stability is good, the light energy utilizing rate is high, the thickness is small and the cost is low.
Description
Technical field
The utility model belongs to field of liquid crystal display, relates in particular to a kind of backlight module and LCD.
Background technology
At present, the backlight liquid crystal display module mainly comprises two kinds of side-light type and straight-down negatives from light inlet mode classification.With reference to accompanying drawing 1; Side-light type is that light emitting source 11 is at side; Light is injected LGP 12 and is dispersed the back through the site on the LGP and send even light from light-emitting area, and the thickness of this module backlight can be done very thinly, but the light-conductive media of LGP is an acrylic; This material has unstability to a certain degree, and long-term use can influence the light effect that of backlight module; And LGP inevitably can absorb a part of light, causes light emission rate to reduce, and is unfavorable for energy-conservation; The price of LGP is also more expensive simultaneously, has therefore increased cost.With reference to accompanying drawing 2, straight-down negative light inlet mode be light emitting source 21 at downside, light is directly injected top diffuser plate 22, directly penetrates from light-emitting area through after diffuser plate and the diffusion of other blooming pieces, this backlight module bright dipping is more even.But because the angle of emergence of LED is smaller, therefore whole module needs a large amount of LED, causes cost higher.
The utility model content
The purpose of the utility model is to provide a kind of backlight module, makes it need not adopt LGP and a large amount of LED, can realize the purpose that low cost, good stability and light emission rate are high simultaneously.
The utility model is achieved in that a kind of backlight module, comprises that light source, surface are provided with the reflector plate of scattering netted dot and the diffuser plate that the surface is provided with the reflection site; Said diffuser plate is provided with the face of reflection site and the face that reflector plate is provided with scattering netted dot is oppositely arranged; Said light source is arranged at the side between said reflector plate and the diffuser plate.
Optimal technical scheme as the utility model:
The distribution density of said scattering netted dot increases along with the increase of the distance between scattering netted dot and the light source.
The distribution density of said reflection site reduces along with the increase of the distance between reflection site and the light source.
Said scattering netted dot is formed by the printing ink that is doped with the diffused particle that is printed in said reflector plate surface.
Said reflection site is formed by the reflection-type printing ink that is printed in said diffuser plate surface.
Said light source comprises a plurality of LED, and said a plurality of LED are distributed in one group of relative side between reflector plate and the diffuser plate uniformly.
Said light source comprises a plurality of LED, and said a plurality of LED are distributed in each side between reflector plate and the diffuser plate uniformly.
Another purpose of the utility model is to provide a kind of LCD, comprises display casing, shows module, for said demonstration module module backlight backlight is provided, and said module backlight adopts above-mentioned backlight module.
Optimal technical scheme as the utility model LCD:
Said display casing comprises a backboard, and each side of said backboard or two relative sides are equipped with the slope, and the light source of said backlight module is arranged on the said slope.
The reflector plate of said backlight module is arranged at the zone that is not provided with light source on the surface of backboard.
The utility model is provided with scattering netted dot on reflector plate; The reflection site is set on diffuser plate and reflector plate facing surfaces, and some can be directly penetrates the light of directive diffuser plate, another part reflector plate below the reflected back of site that then is reflected; The echo area and the scattering netted dot secondary reflection or the scattering again of sheet then are reflected; Appropriate design reflects the arrangement mode of site and scattering netted dot, can control the emergent light flux of diverse location on the diffuser plate, makes the even bright dipping of diffuser plate.The utility model also has the multiple beneficial effect under the prerequisite that realizes even bright dipping:
The first, this backlight module need not adopt LGP, can avoid traditional side-light type module effect problem of unstable backlight; Also can avoid the low problem of light emission rate that causes by the LGP extinction; And can save cost.
The second, the side between reflector plate and diffuser plate is provided with light source; Through being set, the reflection site realizes even bright dipping with the diffusion site; Will not place the below can realize even bright dipping by light source yet; Advantage of uniform light exit with traditional direct type backlight module has overcome its thickness again and has reached the high deficiency of cost more greatly.
Adopt the LCD of this backlight module more energy-conservation, display effect is better, its thickness has also obtained effective control, has reduced cost simultaneously.
Description of drawings
Fig. 1 is the structural representation of existing side light type back light module;
Fig. 2 is the structural representation of existing direct type backlight module;
Fig. 3 is the structural representation of the backlight module that provides of the utility model first embodiment;
Fig. 4 is the structural representation of the reflection site of the backlight module that provides of the utility model first embodiment;
Fig. 5 is the structural representation of the scattering netted dot of the backlight module that provides of the utility model first embodiment;
Fig. 6 is the plan structure sketch map of the backlight module that provides of the utility model first embodiment;
Fig. 7 is the structural representation of the LCD that provides of the utility model second embodiment;
Fig. 8 is the local enlarged diagram of the LCD that provides of the utility model second embodiment.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model provides a kind of backlight module, comprises that light source, surface are provided with the reflector plate of scattering netted dot and the diffuser plate that the surface is provided with the reflection site; Diffuser plate is provided with the face of reflection site and the face that reflector plate is provided with scattering netted dot is oppositely arranged; Light source is arranged at the side between reflector plate and the diffuser plate.
The utility model is through the arrangement mode of appropriate design reflection site and scattering netted dot; Can control the emergent light flux of diverse location on the diffuser plate; Make the even bright dipping of diffuser plate; This module need not adopt LGP and a large amount of LED, and it is low to go out good light stability, efficiency of light energy utilization height, thin thickness and cost.
The utility model also provides a kind of LCD, comprises display casing, shows that module reaches to showing that module provides module backlight backlight, and this module backlight has adopted above-mentioned backlight module.
Be described in detail below in conjunction with the concrete realization of specific embodiment the utility model:
Embodiment one:
Fig. 3 shows the structural representation of the backlight module that the utility model first embodiment provides; Fig. 4 shows the structural representation of the reflection site of the backlight module that the utility model first embodiment provides; Fig. 5 shows the structural representation of the scattering netted dot of the backlight module that the utility model first embodiment provides; Fig. 6 shows the plan structure sketch map of the backlight module that the utility model first embodiment provides, and for the ease of explanation, only shows the part relevant with present embodiment.
With reference to accompanying drawing 3, the backlight module that present embodiment provides mainly comprises light source 31, reflector plate 32 and diffuser plate 33.Reflector plate 32 is oppositely arranged with diffuser plate 33, forms a stratiform space, the side in 31 spaces between reflector plate 32 and diffuser plate 33 of light source between the two.On reflector plate 32 and diffuser plate 33 facing surfaces, be provided with a plurality of scattering netted dots 321; On diffuser plate 33 and reflector plate 32 facing surfaces, then be provided with a plurality of reflections site 331; Be appreciated that; Scattering netted dot 321 is small-sized with reflection site 331, is clouded in the surface of reflector plate 32 and diffuser plate 33 respectively.Reflection site 331 in the present embodiment can be the higher printing ink site of reflectivity that is printed in diffuser plate surface, and scattering netted dot 321 can be printed in the reflector plate surface doping the printing ink site of diffused particle.
This backlight module is mainly realized even bright dipping through scattering netted dot on the reflector plate 32 321 and the reflection site 331 on the diffuser plate 33.Further with reference to accompanying drawing 3, the light directive diffuser plate 33 that light source 31 sends has few part light and directly penetrates through the transparent region of 331 of reflection sites, remains site 331 reflections that then can be reflected of most of light.Reverberation then is divided into two parts, and a part is mapped on the scattering netted dot 321, is scattered site 321 scatterings, certainly, this scattered light again directive diffuser plate 33; Another part light directly is mapped on the reflecting surface between the scattering netted dot 321, is reflexed to once more on the diffuser plate 33 of top.Then, scattered light is understood some and is directly penetrated through the transparent region on diffuser plate 33, and another part site 331 that also can be reflected reflects; Equally, the light that is reflected on the diffuser plate 33 also can some directly penetrate diffuser plate 33, and another part site 331 that is reflected again reflects.Light is transmission and the final diffuser plate that penetrates between reflector plate 32 and diffuser plate 33 like this; In this process; The density degree of scattering netted dot 321 influences the quantity that light is scattered; The density degree of the reflection site 331 on the diffuser plate influences the quantity of transmitted ray, and therefore reasonably the density degree of design reflectivity site 331 and scattering netted dot 321 is controlled the emergent light flux of diffuser plate diverse location, and then controls outgoing light homogeneity.
As a kind of implementation of present embodiment, can adopt following site design:, suppose that light source is at upper/lower terminal with reference to accompanying drawing 4; In the position nearer apart from light source 31; With reflecting closeer that site 331 is provided with, it is more sparse that position far away is provided with, littler than the transmission region of distant place from the nearer transmission region of light source on the diffuser plate like this; Can weaken near the outgoing light intensity of light source effectively, avoid edge brightness bigger.
In this implementation; Scattering netted dot 321 can adopt with the opposite design in reflection site 331; Promptly in the position nearer apart from light source 31, with scattering netted dot 321 be provided with more sparse in to reduce scattering, it is tightr that position far away is provided with; This design combines with the design of above-mentioned reflection site 331, can improve the outgoing light homogeneity of diffuser plate more effectively.
In the present embodiment, light source 31 can adopt LED, specifically can two row LED (like Fig. 6) be set two relative sides between reflector plate and diffuser plate, also can all be provided with at four sides, specifically confirms according to the demand of application end.Certainly, the distribution mode of reflection site 331 and scattering netted dot 321 will be carried out suitable adjustment according to above-mentioned distribution principle and according to concrete light source set-up mode, to reach the effect of even bright dipping.
The utility model is provided with scattering netted dot on reflector plate; The reflection site is set on diffuser plate and reflector plate facing surfaces, and some can be directly penetrates the light of directive diffuser plate, another part reflector plate below the reflected back of site that then is reflected; Sheet and scattering netted dot secondary reflection or scattering more then are reflected; Appropriate design reflects the arrangement mode of site and scattering netted dot, can control the emergent light flux of diverse location on the diffuser plate, makes the even bright dipping of diffuser plate.The utility model also has the multiple beneficial effect under the prerequisite that realizes even bright dipping:
The first, this backlight module need not adopt LGP, can avoid traditional side-light type module effect problem of unstable backlight; Also can avoid the low problem of light emission rate that causes by the LGP extinction; And can save cost.
The second, the side between reflector plate and diffuser plate is provided with light source; Through being set, the reflection site realizes even bright dipping with the diffusion site; Will not place the below can realize even bright dipping by light source yet; Advantage of uniform light exit with traditional direct type backlight module can avoid its thickness to reach the high deficiency of cost more greatly again.
Embodiment two:
Fig. 7 shows the structural representation of the LCD that the utility model second embodiment provides, and Fig. 8 shows the partial enlarged drawing of the LCD that the utility model second embodiment provides, and for the ease of explanation, only shows the part relevant with present embodiment.
With reference to accompanying drawing 7,8, the LCD that present embodiment provides mainly comprises the shell 73 that shows module 71, module backlight 72 and display, the backlight module that this module 72 backlight has adopted the foregoing description to provide.
As a kind of implementation of present embodiment, the shell 73 of this LCD has a backboard 731 and frame 732, and the edge card that shows module 71 is in the draw-in groove of frame 732.The side of backboard 731 presents notch cuttype; It has a slope 7311, and the top on this slope also extends a platform 7312, and the light source of backlight module 72 then is installed on this slope 7311; The lucky like this emergent light of light source that makes tilts to penetrate directive diffuser plate 33.32 of the reflector plates of backlight module are arranged on the position that light source is not installed on the backboard 731, and diffuser plate 33 can carry on platform 7312.Like this, reflector plate 32 and diffuser plate 33 are in the bottom and the top of backboard 731 respectively, and the centre has formed certain space, and light transmits in this space, finally penetrate through diffuser plate 33, for the demonstration module of top provides backlight.
The LCD that present embodiment provides makes that the display effect of this display is more stable owing to adopted the backlight module in the foregoing description one, and the efficiency of light energy utilization is higher, more energy-conservation, and its thickness also obtained effective control, has reduced cost simultaneously.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. a backlight module is characterized in that, comprises that light source, surface are provided with the reflector plate of scattering netted dot and the diffuser plate that the surface is provided with the reflection site; Said diffuser plate is provided with the face of reflection site and the face that reflector plate is provided with scattering netted dot is oppositely arranged; Said light source is arranged at the side between said reflector plate and the diffuser plate.
2. backlight module as claimed in claim 1 is characterized in that the distribution density of said scattering netted dot increases along with the increase of the distance between scattering netted dot and the light source.
3. according to claim 1 or claim 2 backlight module is characterized in that, the distribution density of said reflection site reduces along with the increase of the distance between reflection site and the light source.
4. backlight module as claimed in claim 1 is characterized in that, said scattering netted dot is formed by the printing ink that is doped with the diffused particle that is printed in said reflector plate surface.
5. backlight module as claimed in claim 1 is characterized in that, said reflection site is formed by the reflection-type printing ink that is printed in said diffuser plate surface.
6. backlight module as claimed in claim 1 is characterized in that said light source comprises a plurality of LED, and said a plurality of LED are distributed in one group of relative side between reflector plate and the diffuser plate uniformly.
7. backlight module as claimed in claim 1 is characterized in that said light source comprises a plurality of LED, and said a plurality of LED are distributed in each side between reflector plate and the diffuser plate uniformly.
8. a LCD comprises display casing, shows module and for said demonstration module module backlight backlight is provided, and it is characterized in that, said module backlight adopts each described backlight module of claim 1 to 7.
9. LCD as claimed in claim 8 is characterized in that said display casing comprises a backboard, and each side of said backboard or two relative sides are equipped with the slope, and the light source of said backlight module is arranged on the said slope.
10. LCD as claimed in claim 9 is characterized in that, the reflector plate of said backlight module is arranged at the zone that is not provided with light source on the surface of backboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201990123U CN202101082U (en) | 2011-06-14 | 2011-06-14 | Backlight module and LCD (liquid crystal display) device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201990123U CN202101082U (en) | 2011-06-14 | 2011-06-14 | Backlight module and LCD (liquid crystal display) device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202101082U true CN202101082U (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201990123U Expired - Fee Related CN202101082U (en) | 2011-06-14 | 2011-06-14 | Backlight module and LCD (liquid crystal display) device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202101082U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748655A (en) * | 2012-06-11 | 2012-10-24 | 歌尔声学股份有限公司 | Side light type light-emitting diode (LED) backlight device and achieving method thereof |
| CN103323894A (en) * | 2013-06-18 | 2013-09-25 | 青岛海信电器股份有限公司 | Processing method, processing device and backlight module for diffuser plate dot |
| CN103366684A (en) * | 2012-04-06 | 2013-10-23 | 联想(北京)有限公司 | Terminal device and display control method |
| CN104422984A (en) * | 2013-08-21 | 2015-03-18 | 东莞勤上光电股份有限公司 | Light emission design method |
| CN104820258A (en) * | 2015-04-24 | 2015-08-05 | 深圳市汇晨电子有限公司 | Integrated light guide plate having light diffusion function |
| CN105404053A (en) * | 2015-12-04 | 2016-03-16 | 青岛海信电器股份有限公司 | Backlight module set and display device |
| CN105676521A (en) * | 2014-12-29 | 2016-06-15 | 深圳Tcl新技术有限公司 | Liquid crystal display module |
| CN106226946A (en) * | 2016-09-05 | 2016-12-14 | 合肥京东方光电科技有限公司 | A kind of backlight module and display device |
| CN108519638A (en) * | 2018-04-16 | 2018-09-11 | 常州亚玛顿股份有限公司 | Guide-lighting module and backlight assembly |
| CN110995898A (en) * | 2019-11-29 | 2020-04-10 | Oppo广东移动通信有限公司 | Shell assembly of electronic equipment and electronic equipment |
| CN111562700A (en) * | 2020-03-18 | 2020-08-21 | 深圳市隆利科技股份有限公司 | Direct type backlight device and display equipment |
| CN114077000A (en) * | 2020-08-13 | 2022-02-22 | 苏州维旺科技有限公司 | Diffusion sheet, preparation method thereof and backlight module |
-
2011
- 2011-06-14 CN CN2011201990123U patent/CN202101082U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103366684A (en) * | 2012-04-06 | 2013-10-23 | 联想(北京)有限公司 | Terminal device and display control method |
| CN103366684B (en) * | 2012-04-06 | 2016-03-30 | 联想(北京)有限公司 | Terminal device and display control method |
| CN102748655B (en) * | 2012-06-11 | 2015-12-09 | 歌尔声学股份有限公司 | A kind of side light type LED backlight source device and its implementation |
| CN102748655A (en) * | 2012-06-11 | 2012-10-24 | 歌尔声学股份有限公司 | Side light type light-emitting diode (LED) backlight device and achieving method thereof |
| CN103323894A (en) * | 2013-06-18 | 2013-09-25 | 青岛海信电器股份有限公司 | Processing method, processing device and backlight module for diffuser plate dot |
| CN103323894B (en) * | 2013-06-18 | 2015-08-19 | 青岛海信电器股份有限公司 | The job operation of diffuser plate dot and processing unit (plant) |
| CN104422984B (en) * | 2013-08-21 | 2018-01-19 | 勤上光电股份有限公司 | A kind of light extraction design method |
| CN104422984A (en) * | 2013-08-21 | 2015-03-18 | 东莞勤上光电股份有限公司 | Light emission design method |
| CN105676521A (en) * | 2014-12-29 | 2016-06-15 | 深圳Tcl新技术有限公司 | Liquid crystal display module |
| WO2016161788A1 (en) * | 2014-12-29 | 2016-10-13 | 深圳Tcl新技术有限公司 | Liquid crystal display module |
| CN104820258A (en) * | 2015-04-24 | 2015-08-05 | 深圳市汇晨电子有限公司 | Integrated light guide plate having light diffusion function |
| CN104820258B (en) * | 2015-04-24 | 2016-01-20 | 深圳市汇晨电子有限公司 | A kind of integrated guide tabula rasa with light diffusion function |
| CN105404053A (en) * | 2015-12-04 | 2016-03-16 | 青岛海信电器股份有限公司 | Backlight module set and display device |
| CN106226946A (en) * | 2016-09-05 | 2016-12-14 | 合肥京东方光电科技有限公司 | A kind of backlight module and display device |
| CN108519638A (en) * | 2018-04-16 | 2018-09-11 | 常州亚玛顿股份有限公司 | Guide-lighting module and backlight assembly |
| CN110995898A (en) * | 2019-11-29 | 2020-04-10 | Oppo广东移动通信有限公司 | Shell assembly of electronic equipment and electronic equipment |
| CN111562700A (en) * | 2020-03-18 | 2020-08-21 | 深圳市隆利科技股份有限公司 | Direct type backlight device and display equipment |
| CN114077000A (en) * | 2020-08-13 | 2022-02-22 | 苏州维旺科技有限公司 | Diffusion sheet, preparation method thereof and backlight module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20170614 |