CN201412745Y - Direct backlight module and light transmission board for backlight module - Google Patents
Direct backlight module and light transmission board for backlight module Download PDFInfo
- Publication number
- CN201412745Y CN201412745Y CN200920159725XU CN200920159725U CN201412745Y CN 201412745 Y CN201412745 Y CN 201412745Y CN 200920159725X U CN200920159725X U CN 200920159725XU CN 200920159725 U CN200920159725 U CN 200920159725U CN 201412745 Y CN201412745 Y CN 201412745Y
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Abstract
The utility model provides a direct backlight module and a light transmission board for backlight module. The direct backlight module comprises a plurality of light sources and a light transmission board having a light incoming face and light emitting face. The light incoming face comprises a plurality of curved faces each covering each light source from which the light ray is received. The lightemitting face comprises a group of diffusion particles corresponding to the light sources to diffuse and emit one part of incident light ray and a plurality of prism structures between two adjacent groups of diffusion particles to refract and emit the other part of incident light ray.
Description
Technical field
The relevant a kind of module backlight of the utility model, and particularly relevant a kind of down straight aphototropism mode set and be used for the light-passing board of module backlight.
Background technology
Display, LCD for example, because display floater itself is not had a characteristics of luminescence, therefore being required to be it provides module backlight to realize its Presentation Function.Fig. 1 shows the down straight aphototropism mode set (backlight module) of a known LCD (LCD).In module 1 backlight, load fluorescent tube (lamp) 3 by lamp box (lamp box) 2, fluorescent tube 3 provides light source, often places reflector plate (reflector) 4 in the bottom of lamp box 2, and with non-light towards module exiting surface backlight, exiting surface again leads.In general there is diffuser plate 5 in fluorescent tube 3 the place aheads, make line source be converted into area source.Also can add several bloomings (optical films) 6 in addition, radiation direction is concentrated, make exiting surface more even.At outermost layer covering liquid LCD panel 7, it comprises infrabasal plate 8, liquid crystal layer 9, reaches upper substrate 10, just becomes a complete LCD module 11 at last.
But, because there is spacing between the light source, if space between light sources is bigger, or the effect deficiency of diffuser plate 5 and blooming 6, just produce mixed light and be difficult for uniform problem, the uneven result of mixed light, just 12 produce bright dark staggered striped in the panel viewing area, as shown in Figure 2.For fear of this phenomenon, often have to use more fluorescent tube number with the minimizing spacing, or increase the distance of the thickness of module backlight with the increase mixed light.
Therefore, a kind of module backlight of novelty, it can use fewer relatively purpose light source number, or can reduce light mixing distance, still by being asked.
The utility model content
With demand, the utility model provides a kind of down straight aphototropism mode set and light-passing board thereof of novelty in view of the above-mentioned problems.
Comprise a plurality of light sources and a light-passing board according to down straight aphototropism mode set of the present utility model.Light-passing board comprises an incidence surface and an exiting surface.Incidence surface includes a plurality of arc-shaped curved surfaces, and each arc-shaped curved surface covers each light source respectively, injects from the light of this light source respectively accepting.Exiting surface respectively includes a group diffusion particle (diffuser particle) in the position corresponding to each light source, penetrate with the light diffusion that part is injected, and, position between the exiting surface adjacent two group diffusion particles in office includes a plurality of prisms (prism) structure, penetrates with the light refraction that another part is injected.
According to the light-passing board that module backlight of the present utility model is used, it comprises an incidence surface and an exiting surface.Incidence surface includes a plurality of arc-shaped curved surfaces, injects in order to accept light.Exiting surface includes a group diffusion particle in the position corresponding to each arc-shaped curved surface, penetrate in order to the light diffusion that part is injected, and the position between the exiting surface adjacent two group diffusion particles in office includes a plurality of prism structures, penetrates with the light refraction that another part is injected.
Compared to known technology,, can be applicable in the LCD of direct-type backlight according to module backlight of the present utility model, reduce light mixing distance, therefore can have less module thickness backlight, increase visual grade, and even light mixing and the phenomenon of the bright dark inequality in viewing area of can reducing.
Description of drawings
Fig. 1 shows a known generalized section with LCD module of a module backlight;
Fig. 2 shows and produces the uneven phenomenon of mixed light on the panel viewing area of a known LCD module;
Fig. 3 shows foundation module backlight of the present utility model and is applied to the generalized section of a specific embodiment of LCD;
Fig. 4 shows the enlarged diagram in A district among Fig. 3.
[primary clustering symbol description]
1 module 2 lamp boxes backlight
3 fluorescent tubes, 4 reflector plates
5 diffuser plates, 6 bloomings
7 display panels, 8 infrabasal plates
9 liquid crystal layers, 10 upper substrates
11 LCD modules, 12 panel viewing areas
21 module 22 light sources backlight
23 light-passing boards, 24 incidence surfaces
25 exiting surfaces, 26 arc-shaped curved surfaces
27 ground floors, 28 second layers
29 particles/bubble 32 diffusion particles
33 prism structures, 34 bloomings
35 reflection subassemblies, 36 lamp boxes
37 upper substrates, 38 infrabasal plates
39 liquid crystal layers, 40 display panels
41-44 light
The specific embodiment
In the utility model, the light-passing board that adds a uniqueness in the place ahead of light source is strengthened the ability of module mixed light backlight.Therefore or can be described as diffuser plate or light conductor light-passing board of the present utility model has the light diffusion or the function of directing light.Please refer to Fig. 3 and Fig. 4, Fig. 3 shows that Fig. 4 shows the enlarged drawing of regional A among Fig. 3 according to the generalized section of a specific embodiment of an illuminating module of the present utility model.Module 21 backlight comprises a plurality of light sources 22 and a light-passing board 23.Light source 22 can be for example line source or spot light.Line source for example can be cathode fluorescent tube (cold cathodefluorescent lamp, CCFL).Spot light for example can be light emitting diode (light emittingdiode, LED).
Light-passing board 23 comprises an incidence surface 24 and an exiting surface 25.By the enlarged drawing of Fig. 4, can clearerly see the structure of a specific embodiment of light-passing board 23.Light-passing board 23 shown in Figure 4 mainly is made up of the ground floor (first layer) 27 and 28 of the second layers (second layer).Light-passing board 23 has the geometry of circular arc camber around near light source 22, make when light enters light-passing board 23, is difficult for producing deviation and weakens the state of divergence of beam originally.That is to say that ground floor 27 comprises incidence surface 24, incidence surface 24 includes a plurality of arc-shaped curved surfaces 26.Each arc-shaped curved surface 26 covers a light source 22 respectively, injects from the light of light source 22 with acceptance.The center of light source 22 can be at the symmetry axis of arc-shaped curved surface 26 in the heart.When light source was line source, arc-shaped curved surface can be the arc-shaped curved surface of the shape of falling irrigation canals and ditches; When light source was spot light, arc-shaped curved surface can be dome-type arc-shaped curved surface.Ground floor 27 can further have the particle or the bubble (particle/bubble) 29 of suspension, when light (as light 41) passes through wherein, just be easy to generate refraction at random and reflection (or claiming scattering), can strengthen the ability of mixed light.
28 of the second layers comprise exiting surface 25, (as shown in Figures 3 and 4 corresponding to the exiting surface position of light source 22, be top position at light source or curved surfaces) be provided with a plurality of diffusion particles 32, making originally more can be towards diffusion (for example light 42) all around at the light of bright band.Corresponding to the exiting surface zone between the exiting surface position of light source 22 (shown in the 3rd and 4 figure, be the top position between two adjacent light sources or two adjacent curved surfaces), promptly, exiting surface between the adjacent two group diffusion particles, it has the geometrical construction of prism, that is, and and prism structure 33, make light be positioned at light source 22 between the zone can more concentrate (as light 43), to alleviate the phenomenon of blanking bar.
In addition, the second layer 28 also has a feature, the prism height that is exactly prism structure 33 is highly different with diffusion particle 32, for example, the prism structure height is higher than the diffusion particle height, so, can make and produce the gap between the assembly (for example when using blooming 34 in the top of light-passing board 23, the assembly of light-passing board 23 tops is blooming 34) of light-passing board and top.So, just partly light can utilize this gap to come back reflective transmission (as light 44), make that the bright dipping of module backlight is more even.
Moreover the distribution of diffusion particle 32 is not got rid of it and is distributed on the prism structure 33.In addition, the second layer 28 can be a plane with ground floor 27 intersections.The light-passing board of previous embodiment is made up of the ground floor and the second layer, but is not limited thereto, and does not get rid of light-passing board and can be made up of a simple layer or more multi-layered institute.
Light-passing board of the present utility model can be light transmissive material and makes, for example optical plastic material, for example acryl resin, polycarbonate resin or the like.Can be with ground floor and the second layer for example molded respectively and get, give combination again.Diffusion particle can be for example PET, PMMA, PC, metallic or the like, diffusion particle can be formed on the appropriate position of exiting surface by for example particle coating process.
And for example shown in Figure 3, module 21 backlight can be according to need and further comprise one or a plurality of blooming 34 surely, and it is arranged at the bright dipping side of light-passing board 23, promptly as shown in FIG. above exiting surface 25.Module 21 backlight or can further comprise a reflection subassembly 35 makes light source 22 between reflection subassembly 35 and light-passing board 23, so that reflection subassembly 35 reflections are from the light of light source 22.Module 21 backlight also can further comprise a lamp box 36, to load light source 22 and light-passing board 23 or the like.
Module backlight of the present utility model need in the display backlight can be applicable to.Specific embodiment as shown in Figure 3 still, it is applied to module backlight of the present utility model in the directly-down liquid crystal display, and display panels 40 (it comprises upper and lower base plate 37,38 and liquid crystal layer 39) is and module 21 stacking settings backlight.
The mode of the design that light-passing board of the present utility model is such, except that can so that the viewing area evenly, also represented the thickness that can reduce module backlight, can simplify the use of diaphragm relatively.Or, because the bigger gap of tolerable is gone up in design, and can reduce the number that light source uses.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claims change and modify, and all should belong to covering scope of the present utility model.
Claims (11)
1. a down straight aphototropism mode set is characterized in that, comprising:
A plurality of light sources; And
One light-passing board, it comprises:
One incidence surface, it includes a plurality of arc-shaped curved surfaces, and respectively this arc-shaped curved surface covers respectively this light source respectively, injects from the light of this light source respectively accepting; And
One exiting surface, this exiting surface is respectively including a group diffusion particle corresponding to the position of this light source respectively, penetrate with the light diffusion that part is injected, and the position between this exiting surface adjacent two group diffusion particles in office includes a plurality of prism structures, penetrates with the light refraction that another part is injected.
2. down straight aphototropism mode set as claimed in claim 1 is characterized in that, respectively the center of this light source at the symmetry axis of this arc-shaped curved surface respectively in the heart.
3. down straight aphototropism mode set as claimed in claim 1 is characterized in that, these light source package vinculum light sources, and respectively this arc-shaped curved surface is the arc-shaped curved surface of the shape of falling irrigation canals and ditches, perhaps
These light sources comprise spot light, and respectively this arc-shaped curved surface is dome-type arc-shaped curved surface.
4. down straight aphototropism mode set as claimed in claim 1 is characterized in that, the prism height of these prism structures and the height of these diffusion particles are inequality.
5. down straight aphototropism mode set as claimed in claim 1 is characterized in that, this light-passing board comprises a ground floor and a second layer, and this ground floor comprises this incidence surface, reaches this second layer and comprises this exiting surface, and this ground floor and this second layer intersection are a plane.
6. down straight aphototropism mode set as claimed in claim 5 is characterized in that, this ground floor of this light-passing board includes in order to a plurality of particles or bubble with the light scattering of incident.
7. down straight aphototropism mode set as claimed in claim 1, it is characterized in that this module backlight also further comprises at the blooming above this exiting surface of this light-passing board and/or makes the reflection subassembly of these light sources between this reflection subassembly and this light-passing board.
8. down straight aphototropism mode set as claimed in claim 1 is characterized in that these diffusion particles further are distributed on these prism structures.
9. the light-passing board that module backlight is used is characterized in that, comprising:
One incidence surface, it includes a plurality of arc-shaped curved surfaces, injects in order to accept light; And
One exiting surface, this exiting surface is comprising a group diffusion particle corresponding to the position of this arc-shaped curved surface respectively, penetrate in order to the light diffusion that part is injected, and the position between this exiting surface adjacent two group diffusion particles in office comprises a plurality of prism structures, penetrates with the light refraction that another part is injected.
10. the light-passing board that module backlight as claimed in claim 9 is used is characterized in that, respectively this arc-shaped curved surface is the arc-shaped curved surface of the shape of falling irrigation canals and ditches or is dome-type arc-shaped curved surface.
11. the light-passing board that module backlight as claimed in claim 9 is used, it is characterized in that, this light-passing board comprises a ground floor and a second layer, this ground floor comprises this incidence surface, and this second layer comprises this exiting surface, the intersection of this ground floor and this second layer is a plane, and this ground floor includes a plurality of particles or bubble, in order to the light scattering with incident.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920159725XU CN201412745Y (en) | 2009-06-12 | 2009-06-12 | Direct backlight module and light transmission board for backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920159725XU CN201412745Y (en) | 2009-06-12 | 2009-06-12 | Direct backlight module and light transmission board for backlight module |
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| Publication Number | Publication Date |
|---|---|
| CN201412745Y true CN201412745Y (en) | 2010-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920159725XU Expired - Fee Related CN201412745Y (en) | 2009-06-12 | 2009-06-12 | Direct backlight module and light transmission board for backlight module |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062337A (en) * | 2010-11-18 | 2011-05-18 | 华映视讯（吴江）有限公司 | Backlight assembly with LED (light emitting diode) uniform light structure |
| CN102359722A (en) * | 2011-05-25 | 2012-02-22 | 友达光电股份有限公司 | Backlight module and optical film thereof |
| CN102537755A (en) * | 2010-12-14 | 2012-07-04 | 上海蓝光科技有限公司 | Direct type backlight source module |
| WO2013143176A1 (en) * | 2012-03-26 | 2013-10-03 | 深圳市华星光电技术有限公司 | Direct-type backlight module and lcd device |
| CN106647043A (en) * | 2016-12-08 | 2017-05-10 | 环球智达科技（北京）有限公司 | Backlight structure adopting aggregate type diffusion plate |
| CN108519639A (en) * | 2018-04-18 | 2018-09-11 | 京东方科技集团股份有限公司 | Guide-lighting membrane material, down straight aphototropism mode set and display device |
| CN109031784A (en) * | 2018-08-23 | 2018-12-18 | 厦门天马微电子有限公司 | LED backlight and backlight source module and display device |
| CN109188772A (en) * | 2018-10-30 | 2019-01-11 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN109407405A (en) * | 2018-12-21 | 2019-03-01 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN109597242A (en) * | 2018-11-12 | 2019-04-09 | 深圳市华星光电半导体显示技术有限公司 | A kind of flexibility direct-light-type backlight and its display device |
| CN110824776A (en) * | 2019-11-27 | 2020-02-21 | 惠州市隆利科技发展有限公司 | Direct type mini LED backlight module |
| CN114114756A (en) * | 2021-12-09 | 2022-03-01 | 常州华威新材料有限公司 | Interference-relieving and pressure-resisting brightness enhancement film and preparation method thereof |
| CN114815392A (en) * | 2022-05-20 | 2022-07-29 | 深圳创维－Rgb电子有限公司 | Display device |
| WO2023123632A1 (en) * | 2021-12-27 | 2023-07-06 | 瑞仪光电(南京)有限公司 | Backlight module and display |
-
2009
- 2009-06-12 CN CN200920159725XU patent/CN201412745Y/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062337A (en) * | 2010-11-18 | 2011-05-18 | 华映视讯（吴江）有限公司 | Backlight assembly with LED (light emitting diode) uniform light structure |
| CN102537755A (en) * | 2010-12-14 | 2012-07-04 | 上海蓝光科技有限公司 | Direct type backlight source module |
| CN102359722A (en) * | 2011-05-25 | 2012-02-22 | 友达光电股份有限公司 | Backlight module and optical film thereof |
| WO2013143176A1 (en) * | 2012-03-26 | 2013-10-03 | 深圳市华星光电技术有限公司 | Direct-type backlight module and lcd device |
| CN106647043A (en) * | 2016-12-08 | 2017-05-10 | 环球智达科技（北京）有限公司 | Backlight structure adopting aggregate type diffusion plate |
| US10670916B2 (en) | 2018-04-18 | 2020-06-02 | Beijing Boe Optoelectronics Technology Co., Ltd. | Light guiding film, direct type backlight module and display device |
| CN108519639A (en) * | 2018-04-18 | 2018-09-11 | 京东方科技集团股份有限公司 | Guide-lighting membrane material, down straight aphototropism mode set and display device |
| CN109031784A (en) * | 2018-08-23 | 2018-12-18 | 厦门天马微电子有限公司 | LED backlight and backlight source module and display device |
| CN109188772A (en) * | 2018-10-30 | 2019-01-11 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN109597242A (en) * | 2018-11-12 | 2019-04-09 | 深圳市华星光电半导体显示技术有限公司 | A kind of flexibility direct-light-type backlight and its display device |
| CN109407405A (en) * | 2018-12-21 | 2019-03-01 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN109407405B (en) * | 2018-12-21 | 2021-11-19 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN110824776A (en) * | 2019-11-27 | 2020-02-21 | 惠州市隆利科技发展有限公司 | Direct type mini LED backlight module |
| CN114114756A (en) * | 2021-12-09 | 2022-03-01 | 常州华威新材料有限公司 | Interference-relieving and pressure-resisting brightness enhancement film and preparation method thereof |
| CN114114756B (en) * | 2021-12-09 | 2023-10-03 | 常州华威新材料有限公司 | Anti-interference and compression-resistant brightness enhancement film and preparation method thereof |
| WO2023123632A1 (en) * | 2021-12-27 | 2023-07-06 | 瑞仪光电(南京)有限公司 | Backlight module and display |
| CN114815392A (en) * | 2022-05-20 | 2022-07-29 | 深圳创维－Rgb电子有限公司 | Display device |
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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: CPT TECHNOLOGY (GROUP) CO., LTD. Free format text: FORMER OWNER: CHINA PROJECTION TUBE CO., LTD. Effective date: 20130827 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130827 Address after: 215217, 555 East Road, Tongli District, Wujiang Economic Development Zone, Jiangsu, China Patentee after: CPTW (Wujiang) Co., Ltd. Patentee after: CPT DISPLAY TECHNOLOGY (SHENZHEN)CO., LTD. Address before: 215217, No. 88, Tung Hing Road, Tongli District, Wujiang Economic Development Zone, Suzhou, Jiangsu Patentee before: CPTW (Wujiang) Co., Ltd. Patentee before: Chunghwa Picture Tubes Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20170612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |