CN103292211A - Backlight module of liquid crystal display and liquid crystal display - Google Patents
Backlight module of liquid crystal display and liquid crystal display Download PDFInfo
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- CN103292211A CN103292211A CN2012102996183A CN201210299618A CN103292211A CN 103292211 A CN103292211 A CN 103292211A CN 2012102996183 A CN2012102996183 A CN 2012102996183A CN 201210299618 A CN201210299618 A CN 201210299618A CN 103292211 A CN103292211 A CN 103292211A
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- crystal display
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Abstract
The invention discloses a backlight module of a liquid crystal display and a liquid crystal display, which solve the problem of the light leak of the edge of the liquid crystal display backlight module with a narrow frame during squinting an angle in the prior art. In the backlight module of the liquid crystal display and the liquid crystal display, an uneven area is arranged on at least one side surface, except a light receiving surface, of a light guide plate, or at least one part of at least one side surface, except the light receiving surface, of the light guide plate is wrapped by a diffusion sheet; and the liquid crystal display is composed of the backlight module. Through the backlight module of the liquid crystal display and the liquid crystal display, the incident light rays on the side surface of the light guide plate is enabled to perform scattering, so that a light ray is not formed any longer, and light leak of the edge of the backlight module of the liquid crystal display with the narrow frame is avoided.
Description
Technical field
The present invention relates to field of photoelectric technology, relate in particular to LCD backlight module and LCD.
Background technology
(Liquid Crystal Display LCD), has advantages such as slimming, lightweight, low power consumption, radiationless pollution to LCD, and the LCD product has been widely used in now the display device.Along with the continuous progress of liquid crystal industry technology, the mainstream demand that the large scale that the LCD picture shows and slimming more and more become market.
LCD generally comprises display panels and module backlight, and the structure of module backlight has determined large scale and the slimming of LCD to a great extent, so the narrow frame design of module backlight also becomes a kind of trend, narrow frame means at following the picture area that can see of the screen of same size bigger, and visual effect is more broad.
Module backlight generally comprises frame, is connected the backboard of cooperation with frame, is located at glue frame, LGP, blooming piece, black and white shading glue and light source etc. on the backboard respectively.Display panels is located on the module backlight, because under narrow frame design, the AA district, viewing area (Active Area) of display panels is very near apart from the face plate edge distance, usually has only 1mm ~ 1.2mm, in this case, distance between the visible area VA district (VisibleArea) that LGP edge and black and white shading glue limit is also very little, usually have only about 0.3mm, when the angle of squint, eyes are observed the side of LGP easily, because the reflex of light, the position can be than local bright a lot of on every side herein, form a bright line, shown in Figure 1A, be 28.8 when spending in the angle of squint, eyes can be seen the edge of LGP, form a bright line, when increasing the angle of squint, the LGP edge that eyes are seen will be more many, and the bright line of formation will be more brighter, as Figure 1B, shown in Fig. 1 C and Fig. 1 D, being respectively the angle of squint is 32.6 degree, 37.7 the LGP edge produced the schematic diagram of bright line when degree and 50.9 was spent.Therefore, existing module light guide plate structure backlight causes when the angle of squint, narrow frame LCD backlight module edge light leak.
Summary of the invention
The purpose of this invention is to provide LCD backlight module and LCD, to solve the problem of the edge light leak when the angle of squint of narrow frame LCD backlight module in the prior art.
The objective of the invention is to be achieved through the following technical solutions:
One aspect of the present invention provides a kind of LCD backlight module, comprise light source and LGP, described LGP is the incidence surface of LGP in the face of a side of light source, has the uneven zone with the light scattering on the described LGP, concrete, described uneven zone is positioned at least one side except described incidence surface.
The present invention also provides a kind of LCD, comprises display panels, and has the module backlight with the uneven zone of light scattering on the above-mentioned LGP, and described module backlight is positioned at the below of described display panels.
The present invention also provides another kind of LCD backlight module on the other hand, comprise light source, LGP and be formed at diffusion sheet on the described LGP, described LGP is the incidence surface of LGP in the face of a side of light source, and described diffusion sheet coats described LGP at least one side except described incidence surface.
The present invention also provides a kind of LCD, comprises display panels, and above-mentioned diffusion sheet coats the module backlight of at least one side of described LGP except described incidence surface, and described module backlight is positioned at the below of described display panels.
In LCD backlight module provided by the invention and the LCD, comprising on the non-light incidence side face of LGP can be with the uneven zone of light scattering, make incide its surperficial light reflection can scattering, can not be concentrated into a bright line, under bigger angle of squint, can not observe bright line, avoid the edge light leakage phenomena of narrow frame LCD backlight module
Description of drawings
Figure 1A for existing module backlight in the angle of squint 28.8 schematic diagrames that produce bright line when spending;
Figure 1B for existing module backlight in the angle of squint 32.6 schematic diagrames that produce bright line when spending;
Fig. 1 C be existing module backlight in the angle of squint 37.7 schematic diagrames that produce bright line when spending;
Fig. 1 D be existing module backlight in the angle of squint 50.9 schematic diagrames that produce bright line when spending;
The LCD backlight module tangent plane structural representation that Fig. 2 A provides for the embodiment of the invention one;
Fig. 2 B be in the embodiment of the invention one the LGP side with light scattering schematic diagram;
Fig. 3 has the light conducting plate structure schematic diagram in uneven zone for the whole sides except incidence surface in the embodiment of the invention;
The LCD backlight module tangent plane structural representation that Fig. 4 provides for the embodiment of the invention three;
Fig. 5 has the diffusion sheet schematic diagram that void is cut connecting line in the embodiment of the invention three.
The specific embodiment
Among the present invention, has uneven zone on the LGP side of narrow frame LCD backlight module, the light scattering that can come out from the LGP side-emitted no longer is concentrated into a bright line, and then has avoided narrow frame LCD backlight module edge to produce light leakage phenomena.
The embodiment of the invention one provides a kind of LCD backlight module, comprises light source 1 and LGP 2, and having in LGP 2 at least one side except incidence surface can be with the uneven zone of light scattering.
Shown in Fig. 2 A, the LCD backlight module tangent plane schematic diagram that provides for the embodiment of the invention one.
Among Fig. 2 A, the light source 1 of backlight liquid crystal display module is positioned over a side of LGP 2, LGP 2 is the incidence surface 21 of LGP 2 in the face of the side of light source 1, LGP 2 other sides except incidence surface 21 are non-light incidence side face 22, among the present invention, having on the non-light incidence side face 22 of LGP 2 can be with the uneven zone 23 of light scattering, when light incides on the uneven zone 23, light is no longer along a direction reflection, but reflect with the scattering form, shown in Fig. 2 B, thereby make the light that incides non-light incidence side face 22 no longer be concentrated into a bright line, avoided narrow frame LCD backlight module edge light leak.
Preferably, in the embodiment of the invention, as shown in Figure 3, all having on whole sides except incidence surface 21 can be with the uneven zone 23 of light scattering, thereby make that scattering can both be carried out with inciding its surperficial light in the whole sides except incidence surface in the module backlight, can not produce bright line, make narrow frame module under the angle of squint in each orientation, not have light leakage phenomena.
Preferably, the Zone Full of side all can be made into uneven zone in the embodiment of the invention, make manufacture craft simple.
More preferred, in order to save raw material, only the subregion on the side makes uneven zone, can reach and will incide the light scattering of side, and the purpose of avoiding bright line to produce gets final product.
Preferably, uneven zone 23 in the embodiment of the invention on the LGP 2 can be adopted frosting technology that LGP non-light incidence side face 22 is carried out the frosted atomizing and be handled, form the irregular frosting of surface configuration, make the light of being launched by LGP 2 non-light incidence side faces 22 carry out scattering, no longer be concentrated into a bright line.
Preferably, the light source of backlight liquid crystal display module can be led light source in the embodiment of the invention, and led light source adopts dc source, can increase the service life.
In the LCD backlight module that provides in the embodiment of the invention, comprising on the non-light incidence side face of LGP can be with the uneven zone of light scattering, make incide its surperficial light reflection can scattering, can not be concentrated into a bright line, under bigger angle of squint, can not observe bright line, avoid the edge light leakage phenomena of narrow frame LCD backlight module.
The embodiment of the invention two also provides a kind of LCD, this LCD comprises LCD backlight module related among display panels and the embodiment one, the formation of forming this backlight liquid crystal display module is identical with embodiment one with function, does not repeat them here.
The LCD that the embodiment of the invention two provides can be with the uneven zone of light scattering owing to have on the LGP in the module backlight, so observe bright line can avoid the angle of squint time, avoids the edge light leak.
The embodiment of the invention three provides another kind of LCD backlight module, and present embodiment makes and incides the light scattering that the light on the side of LGP except incidence surface reflects based on the goal of the invention identical with embodiment one.
In the embodiment of the invention, as shown in Figure 4, the LCD backlight module comprises light source 1, LGP 2 and is formed at diffusion sheet 3 on the LGP 2, light source 1 is placed on a side of LGP 2, LGP 2 is the incidence surface 21 of LGP in the face of a side of light source 1, and diffusion sheet 3 coats LGP 2 at least one side except incidence surface 21.Utilize in the embodiment of the invention that have can be with the diffusion sheet of light scattering, coat the side except incidence surface of LGP, not only simplified manufacture craft, and the light that incides the LGP side is incided on the diffusion sheet, make the light scattering, no longer be concentrated into a bright line, avoided the edge light leak of narrow frame LCD backlight module.
Concrete, the light source that is placed on LGP one side in the embodiment of the invention is led light source preferably, and led light source employing dc source can increase the service life.
Preferably, in the embodiment of the invention, diffusion sheet 3 can all coat the whole sides of LGP except incidence surface 21, and it is more preferred, can coat the Zone Full of non-light incidence side face 22, thereby make that the whole non-light incidence side faces 22 except incidence surface 21 can both can not produce bright line with the light scattering in the module backlight, make narrow frame module under the angle of squint in each orientation, not have light leakage phenomena.
More preferred, in order to save diffusion sheet, diffusion sheet can only coat the subregion on the side.
Preferably, in the embodiment of the invention, realize that diffusion sheet coats at least one part of at least one side of LGP except incidence surface, can be on the making basis of original diffusion sheet 3, coat the size of side regions according to diffusion sheet, prolong diffusion sheet, and, bending for the ease of diffusion sheet, can coat at diffusion sheet 3 and make the empty connecting line of cutting 31 between LGP part and the former part that is formed on the LGP, the connecting line 31 that void is cut is parallel to the edge line that LGP 2 and diffusion sheet 3 intersect, as shown in Figure 5.Can not change on the manufacture craft basis of original module backlight, with connecting line 31 bendings that diffusion sheet 3 is cut along void, just can coat the side of LGP.
In the embodiment of the invention, the diffusion sheet that utilization has the light scattering process coats the side regions that LGP forms bright line easily, do not changing on the manufacture craft basis of original module backlight, making the light scattering of inciding the LGP side, avoiding the edge light leakage phenomena.
The embodiment of the invention four also provides a kind of LCD, this LCD comprises the LCD backlight module among display panels and the embodiment three, the formation of forming this backlight liquid crystal display module is identical with embodiment three with function, does not repeat them here.
The LCD that the embodiment of the invention four provides, because in the module backlight, have the zone that is easy to generate bright line that the diffusion sheet of light scattering is coated other sides of LGP except incidence surface, so observe bright line can avoid the angle of squint time, avoid the edge light leak.
Related LCD and the LCD backlight module of embodiment one to embodiment four can be applied to any product or parts with Presentation Function such as Electronic Paper, LCD TV, LCD, DPF, mobile phone, panel computer among the present invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (17)
1. LCD backlight module, comprise light source and LGP, described LGP is the incidence surface of LGP in the face of a side of light source, it is characterized in that, has the uneven zone with the light scattering on the described LGP, concrete, described uneven zone is positioned at least one side except described incidence surface.
2. module backlight as claimed in claim 1 is characterized in that, described at least one side is the whole sides except incidence surface.
3. module backlight as claimed in claim 2 is characterized in that, the Zone Full of described side all has described uneven zone.
4. module backlight as claimed in claim 2 is characterized in that, at least a portion zone of described side has described uneven zone.
5. module backlight as claimed in claim 1 is characterized in that, described uneven zone is formed by frosting technology.
6. as each described module backlight of claim 1-5, it is characterized in that described light source is placed on a side of LGP.
7. module backlight as claimed in claim 6 is characterized in that, described light source is led light source.
8. a LCD comprises display panels, it is characterized in that, also comprise each described module backlight of claim 1-7, and described module backlight is positioned at the below of described display panels.
9. LCD backlight module, comprise light source, LGP and be formed at diffusion sheet on the described LGP, described LGP is the incidence surface of LGP in the face of a side of light source, it is characterized in that described diffusion sheet coats described LGP at least one side except described incidence surface.
10. module backlight as claimed in claim 9 is characterized in that, described at least one side is the whole sides except the light inlet side.
11. module backlight as claimed in claim 10 is characterized in that described diffusion sheet coats the Zone Full of described side.
12. module backlight as claimed in claim 10 is characterized in that described diffusion sheet coats at least a portion of described side.
13. module backlight as claimed in claim 9 is characterized in that, described diffusion sheet coats between described LGP part and the former part that is formed on the LGP has the connecting line that void is cut.
14. module backlight as claimed in claim 13 is characterized in that, the connecting line that described void is cut is parallel to the edge line that described LGP and described diffusion sheet intersect.
15. as each described module backlight of claim 10-14, it is characterized in that described light source is placed on a side of described LGP.
16. module backlight as claimed in claim 15 is characterized in that, described light source is led light source.
17. a LCD comprises display panels, it is characterized in that, also comprise each described module backlight of claim 10-17, and described module backlight is positioned at the below of described display panels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299618.3A CN103292211B (en) | 2012-08-21 | 2012-08-21 | LCD backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299618.3A CN103292211B (en) | 2012-08-21 | 2012-08-21 | LCD backlight module and liquid crystal display |
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| CN103292211A true CN103292211A (en) | 2013-09-11 |
| CN103292211B CN103292211B (en) | 2016-12-21 |
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Cited By (9)
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| CN105090893A (en) * | 2015-08-24 | 2015-11-25 | 武汉华星光电技术有限公司 | Light guide plate and backlight module |
| CN105204229A (en) * | 2015-10-20 | 2015-12-30 | 武汉华星光电技术有限公司 | Backlight module with non-planar lateral structure and liquid crystal display device |
| CN105759502A (en) * | 2016-04-28 | 2016-07-13 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN105759335A (en) * | 2015-12-18 | 2016-07-13 | 上海天马微电子有限公司 | Light guide plate, backlight module and display device |
| CN106200129A (en) * | 2016-09-30 | 2016-12-07 | 京东方科技集团股份有限公司 | Backlight module and manufacture method, display module and annular shading rubber belt |
| CN107229093A (en) * | 2017-06-30 | 2017-10-03 | 厦门天马微电子有限公司 | Sidelight type backlight module and its light source and display panel |
| CN107533187A (en) * | 2015-07-24 | 2018-01-02 | 日本电气硝子株式会社 | Light guide plate glass plate |
| CN107843991A (en) * | 2017-09-05 | 2018-03-27 | 努比亚技术有限公司 | Detection method, system, terminal and the computer-readable recording medium of screen light leak |
| CN111722313A (en) * | 2020-07-23 | 2020-09-29 | 京东方科技集团股份有限公司 | Light guide plate, lateral entrance type backlight module and liquid crystal display device |
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| CN106200129A (en) * | 2016-09-30 | 2016-12-07 | 京东方科技集团股份有限公司 | Backlight module and manufacture method, display module and annular shading rubber belt |
| CN106200129B (en) * | 2016-09-30 | 2019-11-05 | 京东方科技集团股份有限公司 | Backlight module and its manufacturing method, display mould group and annular shading rubber belt |
| CN107229093A (en) * | 2017-06-30 | 2017-10-03 | 厦门天马微电子有限公司 | Sidelight type backlight module and its light source and display panel |
| CN107843991A (en) * | 2017-09-05 | 2018-03-27 | 努比亚技术有限公司 | Detection method, system, terminal and the computer-readable recording medium of screen light leak |
| CN111722313A (en) * | 2020-07-23 | 2020-09-29 | 京东方科技集团股份有限公司 | Light guide plate, lateral entrance type backlight module and liquid crystal display device |
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| CN103292211B (en) | 2016-12-21 |
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