CN204086760U - A kind of backlight module of promoted local darkness of improvement - Google Patents
A kind of backlight module of promoted local darkness of improvement Download PDFInfo
- Publication number
- CN204086760U CN204086760U CN201420611035.4U CN201420611035U CN204086760U CN 204086760 U CN204086760 U CN 204086760U CN 201420611035 U CN201420611035 U CN 201420611035U CN 204086760 U CN204086760 U CN 204086760U
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- Prior art keywords
- guide plate
- light guide
- light
- darkness
- diffuser
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Links
- 230000031700 light absorption Effects 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
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- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a kind of backlight module of promoted local darkness of improvement, backlight module comprises: one first light guide plate; One second light guide plate, is located at the side of the first light guide plate; One diffuser, diffuser is located between the first light guide plate and the second light guide plate, diffuser is provided with a darkness control zone, the darkness control zone being adjacent to the one side of the first light guide plate has a light reflection block in order to reflection ray, light reflection block is white portion, the darkness control zone of the one side of corresponding second light guide plate has one first light absorption block, and the first light absorption block is black region; One reflecting element, is arranged at the side of the second light guide plate in contrast to diffuser, and the one side that reflecting element is adjacent to the second light guide plate is provided with one second light absorption block; Multiple illuminating part, provides the first light guide plate and the second light guide plate light source.The utility model can provide comparatively uniform briliancy effect, contributes to adjusting uniform brilliance, and local darkness is increased, and the contrast of improving product display frame.
Description
Technical field
The utility model relates to technical field of LCD display, refers to a kind of backlight module of promoted local darkness of improvement especially.
Background technology
As shown in Figure 1, the backlight module 1 for local darkness object double layer light guide board can be reached of prior art, it comprises one first light guide plate 20; One second light guide plate 30 is arranged at the side of described first light guide plate 20; One diffuser 4 is located between described first light guide plate 20 and the second light guide plate 30, and described diffuser 4 is arranged for avoiding the mutual scratch of two light guide plate, and described diffuser 4 is the diffusion sheet that a mist degree is lower; One reflecting element 5 is arranged at the below of described second light guide plate 30, the light source formed from described second light guide plate 30 in order to energy usable reflection; Wherein, for making local darkness increase, multiple illuminating part 60 is placed in the side of two light guide plate.
When above-mentioned backlight module 1 structure is applied to the liquid crystal panel product of product such as less than seven cun of small size panel, because the squeezing electrical distance between described two light guide plate is not enough, and cause part light source to penetrate the exiting surface 202 of described diffuser 4 to described first light guide plate 20, neighboring edge part forms unexpected bright band, and then the effect of local darkness is reduced, cause the contrast distortion of display frame.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of backlight module of promoted local darkness of improvement, low to solve backlight module of the prior art local darkness effect, and causes the problem of the contrast distortion of display frame.
For solving the problems of the technologies described above, embodiment of the present utility model provides a kind of backlight module of promoted local darkness of improvement, and described backlight module (10) comprising: one first light guide plate (20), one second light guide plate (30), is located at the side of described first light guide plate (20), one diffuser (40), described diffuser (40) is located between described first light guide plate (20) and described second light guide plate (30), described diffuser (40) is provided with a darkness control zone (42), the darkness control zone (42) being adjacent to the one side of described first light guide plate (20) has light reflection block (422) in order to reflection ray, described light reflection block (422) is white portion, the darkness control zone (42) of the one side of corresponding described second light guide plate (30) has one first light absorption block (424), described first light absorption block (424) is black region, one reflecting element (50), be arranged at the side of described second light guide plate (30) in contrast to described diffuser (40), the one side that described reflecting element (50) is adjacent to described second light guide plate (30) is provided with one second light absorption block (502), multiple illuminating part (60), provides described first light guide plate (20) and the second light guide plate (30) light source.
Light reflection block (422) of described diffuser (40) is overlapping or completely overlapping at least partially in vertical direction with the first light absorption block (424).
Second light absorption block (502) of described reflecting element (50) is black region.
Second light absorption block (502) of described reflecting element (50) and the first light absorption block (424) of described diffuser (40) are overlapping or completely overlapping at least partially in vertical direction.
The beneficial effect of technique scheme of the present utility model is as follows:
The backlight module of the promoted local darkness of improvement of the present utility model, when described first light guide plate sends straight to formula radiation source to the second light guide plate, the light of now described light reflection block can be reflected back toward the first light guide plate and bright dipping further, makes it provide comparatively uniform briliancy effect; And described second light guide plate sends the light being irradiated to described first light absorption block, then partly can be predominantly absorbed and not reflect, also contribute to adjusting uniform brilliance; Local darkness is made to increase whereby, and the contrast of improving product display frame; The object arranging described second light absorption block is, in order to strengthen the assimilation effect of the light source that described two light guide plate penetrate, contributes to further adjusting uniform brilliance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the backlight module of prior art.
Fig. 2 is the structural representation of the backlight module of the promoted local darkness of the improvement of the utility model embodiment.
Embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 2, the utility model embodiment provides a kind of backlight module of promoted local darkness of improvement, and described backlight module 10 comprises: one first light guide plate 20, has an exiting surface 202; One second light guide plate 30, is positioned at the side of described first light guide plate 20; One diffuser 40, described diffuser 40 is located between described first light guide plate 20 and described second light guide plate 30, described diffuser 40 is provided with a darkness control zone 42, the darkness control zone 42 being adjacent to described first light guide plate 20 one side has a light reflection block 422, and the darkness control zone 42 corresponding to the another side of the diffuser 40 of the light reflection block 422 of described darkness control zone 42 is provided with one first light absorption block 424; Described light reflection block 422 is white portion, and described first light absorption block 424 is black region; Wherein, described light reflection block 422 penetrates light source in order to reflection from described first light guide plate 20, the light-emitting zone briliancy of described first light guide plate 20 is increased, described first light absorption block 424 penetrates light source, to reduce the sidelight light source of described first light guide plate 20 luminous zone in order to absorb from described second light guide plate 30; The area of wherein said darkness control zone 42 is less than or equal to the area of described diffuser 40, and described darkness control zone 42 uses printing process and formed; Being set to of wherein said diffuser 40 avoids mutual scratch between two light guide plate, and described diffuser 40 is the diffusion sheet that a mist degree is lower; One reflecting element 50, be arranged at the side of described second light guide plate 30 in contrast to described diffuser 40, the one side that described reflecting element 50 is adjacent to described second light guide plate 30 is provided with one second light absorption block 502, described second light absorption block 502 is black region, described second light absorption block 502 is overlapping or completely overlapping at least partially in vertical direction with the first light absorption block 424 of described diffuser 40, and described reflecting element 50 is a backlight; And multiple illuminating part 60, increase, by described multiple illuminating part 60 around the side being located at two light guide plate for making local darkness; Described illuminating part 60 is made up of LED module.
When described first light guide plate 20 sends straight to formula radiation source to the second light guide plate 30, now the light of described first light reflection block 422 can be reflected back toward the first light guide plate 20 and bright dipping further, makes it provide comparatively uniform briliancy effect; And described second light guide plate 30 sends the light being irradiated to described first light absorption block 424, then partly can be predominantly absorbed and not reflect, also contribute to adjusting uniform brilliance; Local darkness is made to increase whereby, and the contrast of improving product display frame; The object arranging described second light absorption block 502 is, in order to strengthen the assimilation effect of the light source that described two light guide plate penetrate, contributes to further adjusting uniform brilliance.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a backlight module for the promoted local darkness improved, it is characterized in that, described backlight module (10) comprising: one first light guide plate (20), one second light guide plate (30), is located at the side of described first light guide plate (20), one diffuser (40), described diffuser (40) is located between described first light guide plate (20) and described second light guide plate (30), described diffuser (40) is provided with a darkness control zone (42), the darkness control zone (42) being adjacent to the one side of described first light guide plate (20) has light reflection block (422) in order to reflection ray, described light reflection block (422) is white portion, the darkness control zone (42) of the one side of corresponding described second light guide plate (30) has one first light absorption block (424), described first light absorption block (424) is black region, one reflecting element (50), be arranged at the side of described second light guide plate (30) in contrast to described diffuser (40), the one side that described reflecting element (50) is adjacent to described second light guide plate (30) is provided with one second light absorption block (502), multiple illuminating part (60), provides described first light guide plate (20) and the second light guide plate (30) light source.
2. the backlight module of the promoted local darkness of improvement according to claim 1, it is characterized in that, light reflection block (422) of described diffuser (40) is overlapping or completely overlapping at least partially in vertical direction with the first light absorption block (424).
3. the backlight module of the promoted local darkness of improvement according to claim 2, is characterized in that, the second light absorption block (502) of described reflecting element (50) is black region.
4. the backlight module of the promoted local darkness of improvement according to claim 3, it is characterized in that, the second light absorption block (502) of described reflecting element (50) and the first light absorption block (424) of described diffuser (40) are overlapping or completely overlapping at least partially in vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611035.4U CN204086760U (en) | 2014-10-22 | 2014-10-22 | A kind of backlight module of promoted local darkness of improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611035.4U CN204086760U (en) | 2014-10-22 | 2014-10-22 | A kind of backlight module of promoted local darkness of improvement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204086760U true CN204086760U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420611035.4U Expired - Fee Related CN204086760U (en) | 2014-10-22 | 2014-10-22 | A kind of backlight module of promoted local darkness of improvement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204086760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106813164A (en) * | 2017-04-01 | 2017-06-09 | 京东方科技集团股份有限公司 | Backing structure and display device |
-
2014
- 2014-10-22 CN CN201420611035.4U patent/CN204086760U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106813164A (en) * | 2017-04-01 | 2017-06-09 | 京东方科技集团股份有限公司 | Backing structure and display device |
| WO2018177279A1 (en) * | 2017-04-01 | 2018-10-04 | 京东方科技集团股份有限公司 | Backlight structure and 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: BEIJING ZWHX TECHNOLOGY + SCIENCE CO., LTD. Free format text: FORMER OWNER: YING XIAYING Effective date: 20150722 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150722 Address after: 100089, room 1, floor 6, building 5, 109 Changchun Road, Haidian District, Beijing Patentee after: Beijing Zhongwei Information Technology Co., Ltd. Address before: 315700 Zhejiang city of Ningbo province Xiangshan County Road No. 16 port crane Pu Pu Patentee before: Ying Xiaying |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20151022 |
|
| EXPY | Termination of patent right or utility model |