CN203240403U - Backlight module and LCD (liquid crystal display) device - Google Patents
Backlight module and LCD (liquid crystal display) device Download PDFInfo
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- CN203240403U CN203240403U CN 201320161058 CN201320161058U CN203240403U CN 203240403 U CN203240403 U CN 203240403U CN 201320161058 CN201320161058 CN 201320161058 CN 201320161058 U CN201320161058 U CN 201320161058U CN 203240403 U CN203240403 U CN 203240403U
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- light
- backlight module
- light source
- diaphragm group
- shield layer
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Abstract
The utility model discloses a backlight module and an LCD (liquid crystal display) device. The backlight module comprises a backplane, a light source, a light guide plate, an optical film group and a rubber frame, wherein the light guide plate is arranged opposite to the light source, the optical film group is arranged above the light guide plate, the rubber frame is arranged on the backplane and is used for fixing the optical film group, and the side surface, which is close to the light source, of the optical film group is provided with a shading layer. With the adoption of the backlight module, a light leak phenomenon generated when light strikes on the optical film group can be reduced.
Description
Technical field
The utility model relates to technical field of liquid crystal display, relates in particular to a kind of backlight module and liquid crystal indicator.
Background technology
At present, along with the extensive use of LED semiconductor technology and large scale liquid crystal Display Technique, the application of the super narrow frame side entering type backlight module of large scale is more and more extensive.Side entrance back module principle is: the light that send in the lamp source after the energising, incide in the LGP that is oppositely arranged with light source, through being arranged on the reflector plate reflection of bottom surface of light guide plate, the light that light source is sent reflects and reflection inner constantly generation of LGP, thereby make light be uniformly distributed in the surface of backlight module, and then line source is converted to uniform area source.In addition, be provided with diffusion sheet and other diaphragms through the LGP top, can further improve brightness and the uniformity of area source.
But existing side entrance back module is easy to occur light leakage phenomena.As shown in Figure 1, the light that light source sends, major part can incide in the LGP, but still has fraction light to enter into optical diaphragm group by the end face of optical diaphragm group stacking on the LGP.The thickness of optical diaphragm group is less, can be understood as the LGP of very thin thickness, and light still can be propagated forward one section distance after entering optical diaphragm group, forms bright line.When the width of bright line greater than the zone that the glue frame hides, during namely greater than the visible area on the liquid crystal indicator, will form light leak, A place is that the light leak of backlight module is regional as shown in Figure 1.This zone can produce bright line, the visual effect that impact is watched.
In the backlight module industry, usually with A/P the degree of risk that may occur light leak in the light inlet side of light source is described.Wherein, A is the distance that the light-emitting area of LED arrives the liquid crystal panel visible area, and P is the center distance of adjacent two LEDs.In the situation of the frame of backlight module wider (A/P 〉=0.9 time), this bright line can not have influence on the demonstration taste problem of liquid crystal indicator.But in super narrow frame side entering type backlight module, because light mixing distance short (A/P≤0.9 o'clock), the light line that incides optical diaphragm group by light is easy to enter the viewing area of liquid-crystalline glasses, namely forms the light leakage phenomena in the taste.
The utility model content
Main purpose of the present utility model provides a kind of backlight module and liquid crystal indicator, is intended to reduce the backlight module light leak that the leaded light because of optical diaphragm group produces.
In order to achieve the above object, the utility model proposes a kind of backlight module, comprise backboard, light source, with respect to the LGP of described light source setting, be located at the optical diaphragm group of described LGP top and be arranged at the glue frame that is used for fixed optics diaphragm group on the backboard, it is characterized in that the side of the close described light source of described optical diaphragm group is provided with light shield layer.
Preferably, described light shield layer is coating, coating, paste layer or chemical generation layer.
Preferably, a plurality of blooming pieces on the described optical diaphragm group are on the close stacking formation of described light source one side one inclined-plane, and the angle between the blooming piece of described inclined-plane and the bottom is greater than 90 degree.
Preferably, described light shield layer is provided with the first reflecting layer.
Preferably, the surface near described light source is provided with the second reflecting layer on the described glue frame.
Preferably, described the first reflecting layer and described the second reflecting layer are to be pasted on the reflector plate on the described light shield layer or to be coated on reflective material on the described light shield layer.
The utility model further also proposes a kind of liquid crystal indicator with above-mentioned backlight module.
The utility model arranges light shield layer by the side near light source on optical diaphragm group, the light that light source is sent can not incide in the blooming piece, but absorbed or be blocked in the outside of optical diaphragm group by light shield layer, incide the light leakage phenomena that optical diaphragm group produces thereby reduce because of light.The backlight module that the utility model proposes, no matter how many values of A/P is, even in light mixing distance more in short-term, can both fundamentally prevent to enter into optical diaphragm group and the light leakage phenomena that produces by the scattered beam that light source sends.In addition, this back light module unit structure is simple, only is used in light shield layer is set on the optical diaphragm group gets final product, and production process is simple and convenient.
Description of drawings
Fig. 1 is the structural representation of backlight module in the prior art;
Fig. 2 is the structural representation of the utility model backlight module the first embodiment;
Fig. 3 is the structural representation of the utility model backlight module the second embodiment.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
The specific embodiment
Be described further with regard to the technical solution of the utility model below in conjunction with drawings and the specific embodiments.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model proposes a kind of backlight module.
With reference to Fig. 2, Fig. 2 is the structural representation of the utility model backlight module the first embodiment.
The first embodiment of the backlight module that the utility model proposes.In the present embodiment, the LGP 30 that backlight module comprises backboard 10, light source 20, be located on the backboard 10 and arrange with respect to light source 20, be located at the optical diaphragm group 40 of LGP 30 tops and be installed on the backboard 10 and the glue frame 50 of fixed optics diaphragm group 40, be located at the reflector plate 60 between LGP 30 and the backboard 10, be provided with light shield layer 70 in the side of the close light source 20 of optical diaphragm group.Light shield layer 70 is black.In the present embodiment, light source 20 is the LED lamp.
By the side near light source 20 on optical diaphragm group light shield layer 70 is set, the light that light source 20 sends can not incide in the blooming piece, but absorbed or be blocked in the outside of optical diaphragm group by light shield layer 70, incide the light leakage phenomena that optical diaphragm group produces thereby reduce because of light.The backlight module that the utility model proposes, no matter how many values of A/P is, even in light mixing distance more in short-term, can both fundamentally prevent to enter into optical diaphragm group and the light leakage phenomena that produces by the scattered beam that light source 20 sends.In addition, this back light module unit structure is simple, only is used in light shield layer 70 is set on the optical diaphragm group gets final product, and produces simple and convenient, easy realization.
Particularly, in the present embodiment, light shield layer 70 can be the material of shading in formation coating that coating, sputter or evaporation that ink-jet or printing form form, the stickup and the paste layer that forms an or end of optical diaphragm group carried out chemical treatment and the chemical generation layer of the black that generates.In a word, so long as form the light shield layer 70 that can shut out the light in a side of optical diaphragm group and get final product.
Preferably, be provided with the first reflecting layer at light shield layer 70.The first reflecting layer is set, makes the light that light source 20 sends can be through the reflection in the first reflecting layer, thereby improved the utilization rate of light source 20.
Preferably, the surface near described light source 20 1 sides is provided with the second reflecting layer on the glue frame 50.When the color of glue frame 50 is light color when being, the part light that light source 20 sends can incide in the glue frame 50, by being provided with the second reflecting layer near light source 20 1 sides on glue frame 50, thereby has further improved the utilization rate of light source 20.
Particularly, the first reflecting layer and the second reflecting layer can be and be pasted on the reflector plate on the described light shield layer 70 or be coated on reflective material on the described light shield layer 70.
The backlight module that this first embodiment proposes, by the side near light source 20 on optical diaphragm group light shield layer 70 is set, the light that light source 20 is sent can not incide in the blooming piece, but absorbed or be blocked in the outside of optical diaphragm group by light shield layer 70, incide the light leakage phenomena that optical diaphragm group produces thereby reduce because of light.The backlight module that the utility model proposes, no matter how many values of A/P is, even in light mixing distance more in short-term, can both fundamentally prevent to enter into optical diaphragm group and the light leakage phenomena that produces by the scattered beam that light source 20 sends.In addition, this back light module unit structure is simple, only is used in light shield layer 70 is set on the optical diaphragm group gets final product, and produces simple and convenient, easy realization.The first reflecting layer is set, makes the light that light source 20 sends can be through the reflection in the first reflecting layer, thereby improved the utilization rate of light source 20.Be provided with the second reflecting layer by close light source 20 1 sides on glue frame 50, thereby further improved the utilization rate of light source 20.In addition, on glue frame 50, be provided with the second reflecting layer near light source 20 1 sides, thereby further improved the utilization rate of light source 20.
With reference to Fig. 3, Fig. 3 is the structural representation of the utility model backlight module the second embodiment.
The utility model proposes the second embodiment of backlight module, different from the first embodiment is, in the present embodiment, a plurality of blooming pieces on the optical diaphragm group are on the close stacking formation of described light source 20 1 sides one inclined-plane, and the angle between the blooming piece of described inclined-plane and the bottom is greater than 90 degree.Light shield layer 70 is formed on the described inclined-plane.Preferably, described light shield layer 70 is provided with a reflecting layer, and like this, the light that light source 20 sends can be through the reflection on inclined-plane, thereby has further improved the utilization rate of light source 20.
Preferably, the surface near described light source one side is provided with the second reflecting layer on the glue frame.When the color of glue frame is light color when being, the part light that light source sends can incide in the glue frame, by being provided with the second reflecting layer near light source one side on the glue frame, thereby has further improved the utilization rate of light source.
The utility model further also proposes a kind of liquid crystal indicator.
In the present embodiment, liquid crystal indicator comprises backlight module, and the concrete structure of this backlight module does not repeat them here with reference to above-described embodiment.
In this implementation column, by the side near light source on the optical diaphragm group on the backlight module of liquid crystal indicator light shield layer is set, the light that light source is sent can not incide in the blooming piece, but absorbed or be blocked in the outside of optical diaphragm group by light shield layer, thereby the light leakage phenomena of liquid crystal indicator.The liquid crystal indicator that the utility model proposes, no matter how many values of A/P is, even in light mixing distance more in short-term, can both fundamentally prevent light leakage phenomena.
The above only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure transformation that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (7)
1. backlight module, comprise backboard, light source, with respect to the LGP of described light source setting, be located at the optical diaphragm group of described LGP top and be arranged at the glue frame that is used for fixed optics diaphragm group on the backboard, it is characterized in that the side of the close described light source of described optical diaphragm group is provided with light shield layer.
2. backlight module as claimed in claim 1 is characterized in that, described light shield layer is coating, coating, paste layer or chemical generation layer.
3. backlight module as claimed in claim 1 is characterized in that, a plurality of blooming pieces on the described optical diaphragm group are on the close stacking formation of described light source one side one inclined-plane, and the angle between the blooming piece of described inclined-plane and the bottom is greater than 90 degree.
4. such as claim 1 or 3 described backlight modules, it is characterized in that described light shield layer is provided with the first reflecting layer.
5. backlight module as claimed in claim 4 is characterized in that, the surface near described light source on the described glue frame is provided with the second reflecting layer.
6. backlight module as claimed in claim 5 is characterized in that, described the first reflecting layer and described the second reflecting layer are to be pasted on the reflector plate on the described light shield layer or to be coated on reflective material on the described light shield layer.
7. a liquid crystal indicator is characterized in that, comprises such as the described backlight module of any one in the claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161058 CN203240403U (en) | 2013-04-02 | 2013-04-02 | Backlight module and LCD (liquid crystal display) device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161058 CN203240403U (en) | 2013-04-02 | 2013-04-02 | Backlight module and LCD (liquid crystal display) device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203240403U true CN203240403U (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320161058 Expired - Lifetime CN203240403U (en) | 2013-04-02 | 2013-04-02 | Backlight module and LCD (liquid crystal display) device |
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| CN (1) | CN203240403U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728776A (en) * | 2013-12-31 | 2014-04-16 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN108089256A (en) * | 2018-01-31 | 2018-05-29 | 广东欧珀移动通信有限公司 | Electronic device and its display module, backlight module |
| CN108227071A (en) * | 2018-01-31 | 2018-06-29 | 广东欧珀移动通信有限公司 | A kind of backlight module and electronic device |
| EP3709076A1 (en) | 2019-03-11 | 2020-09-16 | Coretronic Corporation | Backlight module and display device |
| WO2023178561A1 (en) * | 2022-03-23 | 2023-09-28 | 京东方科技集团股份有限公司 | Display module and manufacturing method therefor, and display device |
-
2013
- 2013-04-02 CN CN 201320161058 patent/CN203240403U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728776A (en) * | 2013-12-31 | 2014-04-16 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN103728776B (en) * | 2013-12-31 | 2016-02-24 | 京东方科技集团股份有限公司 | A kind of backlight module and display device |
| CN108089256A (en) * | 2018-01-31 | 2018-05-29 | 广东欧珀移动通信有限公司 | Electronic device and its display module, backlight module |
| CN108227071A (en) * | 2018-01-31 | 2018-06-29 | 广东欧珀移动通信有限公司 | A kind of backlight module and electronic device |
| EP3709076A1 (en) | 2019-03-11 | 2020-09-16 | Coretronic Corporation | Backlight module and display device |
| CN111694084A (en) * | 2019-03-11 | 2020-09-22 | 中强光电股份有限公司 | Backlight module and display device |
| US11112824B2 (en) | 2019-03-11 | 2021-09-07 | Coretronic Corporation | Backlight module and display device |
| WO2023178561A1 (en) * | 2022-03-23 | 2023-09-28 | 京东方科技集团股份有限公司 | Display module and manufacturing method therefor, and display device |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20131016 |
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| CX01 | Expiry of patent term |