CN204403931U - A kind of backlight module and adopt the liquid crystal display of this backlight module - Google Patents
A kind of backlight module and adopt the liquid crystal display of this backlight module Download PDFInfo
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- CN204403931U CN204403931U CN201420858303.2U CN201420858303U CN204403931U CN 204403931 U CN204403931 U CN 204403931U CN 201420858303 U CN201420858303 U CN 201420858303U CN 204403931 U CN204403931 U CN 204403931U
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- light
- backlight module
- guiding pillar
- backlight
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Abstract
The utility model discloses a kind of backlight module, it comprises a backlight mesochite, multiple light-guiding pillar, multiple LED light source, described light-guiding pillar comprise an exiting surface, the bottom surface relative with exiting surface and at least one incidence surface, each incidence surface correspondence of described light-guiding pillar arranges a LED light source, described multiple light-guiding pillar is fixed on described backlight mesochite, its exiting surface arrangement formation one area source.The utility model also discloses a kind of liquid crystal display adopting above-mentioned backlight module.
Description
Technical field
The utility model relates to liquid crystal panel field, particularly relates to a kind of backlight module and adopts the liquid crystal display of this backlight module.
Background technology
LED liquid crystal television product has better color effect because of it in recent years, and thinner design and the feature of its energy-conserving and environment-protective make LED product become main product in LCD TV gradually, and have progressively eliminated the LCD product taking CCFL as backlight.Along with the extensive employing LED lamp of industry of throwing light in recent years and the Ji great producer of colour TV are to the extensive application of LED lamp, and the further adjustment of LED originally in price and performance, the cost of LED liquid crystal television is also more and more lower, LED product also moves towards middle-end from high-end gradually, and LED liquid crystal television also inherently occupies the larger market share.Meanwhile, the proposition of energy-conserving and environment-protective theory, make television technologies towards more energy-conservation direction progress, so local dimming technology (Local Dimming) is arisen at the historic moment, the feature that traditional side entering-type LED backlight module has due to itself when feasible region light modulation makes dimming effect not very good
As shown in Figure 1, current most of side entrance back module adopts LED to coordinate the side entering type structure of light guide plate namely to place LED lamp bar in light guide plate side, reflector plate is placed on the downside of light guide plate, there are the structures such as print rule white point that light can be penetrated from upper surface more uniformly due to light guide plate lower surface simultaneously, during local dimming, the arrangement of lamp bar adopts plurality of LEDs a string, a driving of often having gone here and there is powered, the drive current of LED lamp bar is regulated by mainboard chip, realize the brightness regulation to each little string LED, thus feasible region light modulation.
Conventional light guiding plate is because itself being monoblock light guide structure, light can spread in light guide plate, such as wish to only have certain part bright, when other parts are all dark, because the diffusion of light, having that some light goes to should be dark place, thus makes the decreased effectiveness of local dimming, and during the light modulation of feasible region, effect is undesirable.For head it off, industry have developed micro-structure light guide plate, as shown in Figure 2, namely micro-structure light guide plate makes well-regulated semicircle or the arrangement of triangular form micro-structural at the light guide plate exiting surface of otherwise smooth, changing radiation direction by refraction makes the angle of divergence of light diminish, thus realize the convergence of light beam, realize reducing light diffusion.
Adopt the current this technology of micro-structural plate, in single region, the homogeneity question of light can improve, but because micro-structural plate easily scratches, making sheet cost is high, yield is low, limits it always and adopt on a large scale, if and light guide plate is longer, when light path strengthens, light diffusion phenomena are still more obvious.
Summary of the invention
The purpose of this utility model be to provide the low optical uniformity of a kind of cost good can the backlight module of local dimming.
The utility model also provides a kind of liquid crystal display adopting above-mentioned backlight module.
For solving technical problem of the present utility model, a kind of backlight module of the utility model, it comprises a backlight mesochite, multiple light-guiding pillar, multiple LED light source, described light-guiding pillar comprise an exiting surface, the bottom surface relative with exiting surface and at least one incidence surface, each incidence surface correspondence of described light-guiding pillar arranges a LED light source, and described multiple light-guiding pillar is fixed on described backlight mesochite, its exiting surface arrangement formation one area source.
Wherein, described backlight module comprises a reflecting plate further, and it is arranged at described multiple light-guiding pillar bottom surface.
Wherein, described backlight module comprises the reflector plate being arranged at LED between two adjacent LED light sources further.
Wherein, described backlight module comprises the reflector plate being arranged at LED between two adjacent light-guiding pillars further.
Wherein, described backlight module comprises the support be arranged at for fixing described light-guiding pillar on described backlight mesochite further.
Wherein, described light-guiding pillar inside comprises diffusion particle, this particle arrangement rule be: if etc. sized particles, then few near incidence surface number of particles, the number of particles away from incidence surface is many; If different sized particles distributed number close to time, then less near incidence surface particle diameter, large away from incidence surface particle diameter.
Wherein, this diffusion particle described is white particles diffusant.
Wherein, this diffusion particle described is minute bubbles.
The utility model provides a kind of liquid crystal display further, and it adopts the backlight module of above-mentioned feature.
Compared with prior art, backlight module of the present utility model adopts multiple light-guiding pillar to be arranged in area source, make light can only in the region that a slice of this light-guiding pillar exiting surface is very little, and can not have an impact another zonule adjacent to it, thus can realize the adjustment in a certain region thus avoid the impact of other places on this region.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram of light guide plate of prior art.
Fig. 2 is the light guide plate schematic diagram of another kind of prior art.
Fig. 3 is the entirety arrangement schematic diagram of backlight module of the present utility model.
Fig. 4 is the partial schematic diagram of backlight module of the present utility model.
Detailed description of the invention
Backlight module of the present utility model adopts multiple light-guiding pillar to be combined into an area source, and the design that the light source of each light-guiding pillar controls respectively is to improve the homogeneity question of light in single region.
As shown in Figure 3, backlight module of the present utility model, it comprises a backlight mesochite, multiple light-guiding pillar, multiple LED light source, each light-guiding pillar comprise two incidence surfaces and an exiting surface and a bottom surface (not shown), described multiple light-guiding pillar is fixed on described backlight mesochite by support, its exiting surface arrangement formation one area source.
As shown in Figure 4, light-guiding pillar of the present utility model adopts a kind of solid light-guiding pillar made by the material such as glass, acrylic, by arranging diffusion particle therein, this diffusion particle form can be white particles diffusant, composition can be CaCO3, BaSO4, Al2O3, TiO2 etc., also can be the forms such as minute bubbles, the form different from light-guiding pillar material of light path can be changed, its objective is and change original light transmition direction.Described diffusion particle arrangement rule is: if etc. sized particles, then the number of particles near incidence surface is few, and the number of particles away from incidence surface is many; If different sized particles distributed number close to time particle diameter then near incidence surface less, the particle diameter of incidence surface is large.Because if when there is no particle, luminous intensity near incidence surface in light-guiding pillar is high, luminous intensity away from incidence surface is low, the object of this kind of distribution of particles is to make light penetrate from light-guiding pillar more equably, achieve light diffusion to export, by the even output regulating diffusion inside distribution of particles to realize light.
Further, in above-mentioned backlight module, reflector plate can be set between adjacent LED, in this region, adopt a light-guiding pillar to make light both evenly also can realize light in this light-guiding pillar internal mix can not leak into adjacent domain.Bottom backlight module, reflecting plate (not shown) is placed to improve light efficiency in light-guiding pillar bottom surface, makes it can penetrate from front.For improving effect, also can add reflector plate and cutting off light between two light-guiding pillars.
By the light on and off of power driving control LED, when the LED of certain root light-guiding pillar corresponding is in luminance, light derives the homogenising outgoing realizing light in the region of its correspondence by light-guiding pillar, when LED is in closed condition, the region that light-guiding pillar is corresponding is in no light condition because not having light source, namely by regulating the electric current of the LED of corresponding region to get final product feasible region light modulation.
Compared with prior art, backlight module of the present utility model adopts multiple light-guiding pillar to be arranged in area source, make light can only in the region that a slice of this light-guiding pillar exiting surface is very little, and can not have an impact another zonule adjacent to it, thus can realize the adjustment in a certain region thus avoid the impact of other places on this region.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (9)
1. a backlight module, it is characterized in that, comprise a backlight mesochite, multiple light-guiding pillar, multiple LED light source, described light-guiding pillar comprise an exiting surface, the bottom surface relative with exiting surface and at least one incidence surface, each incidence surface correspondence of described light-guiding pillar arranges a LED light source, and described multiple light-guiding pillar is fixed on described backlight mesochite, its exiting surface arrangement formation one area source.
2. backlight module according to claim 1, is characterized in that, comprises a reflecting plate further, and it is arranged at described multiple light-guiding pillar bottom surface.
3. backlight module according to claim 1, is characterized in that, comprises the reflector plate be arranged between two adjacent LED light sources further.
4. backlight module according to claim 1, is characterized in that, comprises the reflector plate be arranged between two adjacent light-guiding pillars further.
5. backlight module according to claim 1, is characterized in that, comprises the support be arranged at for fixing described light-guiding pillar on described backlight mesochite further.
6. backlight module according to claim 1, is characterized in that, described light-guiding pillar inside comprises diffusion particle, this particle arrangement rule be: if etc. sized particles, then few near incidence surface number of particles, the number of particles away from incidence surface is many; If different sized particles distributed number close to time, then less near incidence surface particle diameter, large away from incidence surface particle diameter.
7. backlight module according to claim 6, is characterized in that, this diffusion particle described is white particles diffusant.
8. backlight module according to claim 6, is characterized in that, this diffusion particle described is minute bubbles.
9. a liquid crystal display, is characterized in that, comprises the backlight module as described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420858303.2U CN204403931U (en) | 2014-12-30 | 2014-12-30 | A kind of backlight module and adopt the liquid crystal display of this backlight module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420858303.2U CN204403931U (en) | 2014-12-30 | 2014-12-30 | A kind of backlight module and adopt the liquid crystal display of this backlight module |
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| CN204403931U true CN204403931U (en) | 2015-06-17 |
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| CN201420858303.2U Expired - Fee Related CN204403931U (en) | 2014-12-30 | 2014-12-30 | A kind of backlight module and adopt the liquid crystal display of this backlight module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609060A (en) * | 2016-03-10 | 2016-05-25 | 上海天马微电子有限公司 | Backlight unit, display screen and display apparatus |
| CN108267810A (en) * | 2018-03-02 | 2018-07-10 | 深圳创维－Rgb电子有限公司 | A kind of light guide plate, backlight module and display equipment |
| CN115808820A (en) * | 2022-10-21 | 2023-03-17 | 重庆先进光电显示技术研究院 | Display device, control method thereof, and storage medium |
-
2014
- 2014-12-30 CN CN201420858303.2U patent/CN204403931U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609060A (en) * | 2016-03-10 | 2016-05-25 | 上海天马微电子有限公司 | Backlight unit, display screen and display apparatus |
| US10192520B2 (en) | 2016-03-10 | 2019-01-29 | Shanghai Tianma Micro-electronics Co., Ltd. | Backlight unit, display panel and display device |
| CN105609060B (en) * | 2016-03-10 | 2019-02-12 | 上海天马微电子有限公司 | Back light unit, display screen and display device |
| CN108267810A (en) * | 2018-03-02 | 2018-07-10 | 深圳创维－Rgb电子有限公司 | A kind of light guide plate, backlight module and display equipment |
| CN115808820A (en) * | 2022-10-21 | 2023-03-17 | 重庆先进光电显示技术研究院 | Display device, control method thereof, and storage medium |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20211230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |