CN103292211B - LCD backlight module and liquid crystal display - Google Patents
LCD backlight module and liquid crystal display Download PDFInfo
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- CN103292211B CN103292211B CN201210299618.3A CN201210299618A CN103292211B CN 103292211 B CN103292211 B CN 103292211B CN 201210299618 A CN201210299618 A CN 201210299618A CN 103292211 B CN103292211 B CN 103292211B
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- guide plate
- backlight module
- light guide
- light
- liquid crystal
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Abstract
The invention discloses a kind of LCD backlight module and liquid crystal display, solve narrow frame LCD backlight module problem of edge light leak when angle of strabismus in prior art.In the present invention, light guide plate has at least one side in addition to described incidence surface the uneven region scattered by light；Or, diffusion sheet is coated with at least some of of the light guide plate at least one side in addition to described incidence surface；And formed liquid crystal display by above-mentioned backlight module.By the present invention, make to incide the light scattering of light guide plate side, no longer form a bright line, it is to avoid narrow frame LCD backlight module edge light leak.
Description
Technical field
The present invention relates to field of photoelectric technology, particularly relate to LCD backlight module and liquid crystal display.
Background technology
Liquid crystal display (Liquid Crystal Display, LCD), has slimming, lightweight, low consumption
The advantage such as electricity, radiationless pollution, LCD product is widely used in display device now.Along with liquid
Brilliant industry technology continuous progressive, large scale that LCD picture shows and slimming increasingly become the master in market
Stream demand.
LCD generally comprises display panels and backlight module, and the structure of backlight module is to a great extent
Determine large scale and the slimming of LCD, so the narrow frameization design of backlight module also becomes one and becomes
Gesture, narrow frame means that the picture area can seen under the screen of same size is bigger, and visual effect is more
For broadness.
Backlight module generally comprise frame be connected with frame coordinate backboard, the glue frame being respectively arranged on backboard,
Light guide plate, blooming piece, black and white shading glue and light source etc..Display panels is located on backlight module, by
In under narrow frame design, the AA district, viewing area (Active Area) of display panels is apart from panel edges
Edge away from very near, the most only 1mm ~ 1.2mm, in this case, light-guide edge and black and white shading glue
Distance between the visible area VA district (VisibleArea) limited is the least, and the most only 0.3mm is left
The right side, when angle of strabismus, eyes it is easily observed the side of light guide plate, due to the reflection of light, herein
Position bright much can form a bright line than the most local, as shown in Figure 1A, in angle of strabismus is 28.8 degree
Time, eyes, it can be seen that the edge of light guide plate, form a bright line, and when increasing angle of strabismus, eyes are seen
Light-guide edge will be the most, and the bright line of formation will be more brighter, such as Figure 1B, Fig. 1 C and Fig. 1 D institute
Showing, when respectively angle of strabismus is 32.6 degree, 37.7 degree and 50.9 degree, light-guide edge produces the signal of bright line
Figure.Therefore, existing backlight module light conducting plate structure, causes when angle of strabismus, narrow frame liquid crystal display
Backlight module edge light leak.
Summary of the invention
It is an object of the invention to provide LCD backlight module and liquid crystal display, to solve prior art
In narrow frame LCD backlight module problem of edge light leak when angle of strabismus.
It is an object of the invention to be achieved through the following technical solutions:
One aspect of the present invention provides a kind of LCD backlight module, including light source and light guide plate, described
Light guide plate, in the face of the incidence surface that one side is light guide plate of light source, described light guide plate has by light scattering
Uneven region, concrete, described uneven region is positioned at least one side in addition to described incidence surface
On.
Present invention also offers a kind of liquid crystal display, including display panels, and on above-mentioned light guide plate
There is the backlight module in the uneven region scattered by light, and described backlight module is positioned at described liquid crystal display
The lower section of panel.
Another aspect of the present invention additionally provides another kind of LCD backlight module, including light source, light guide plate
With the diffusion sheet being formed on described light guide plate, described light guide plate is entering of light guide plate in the face of the one side of light source
Bright finish, described diffusion sheet cladding described light guide plate at least one side in addition to described incidence surface.
Present invention also offers a kind of liquid crystal display, including display panels, and above-mentioned diffusion sheet bag
Cover the backlight module of the described light guide plate at least one side in addition to described incidence surface, and described backlight module
It is positioned at the lower section of described display panels.
In the LCD backlight module of present invention offer and liquid crystal display, the non-incident light side surface of light guide plate
On comprise can by light scatter uneven region so that the luminous reflectance inciding its surface can scatter, no
A bright line can be concentrated into, under bigger angle of strabismus, would not observe that bright line, it is to avoid narrow frame liquid crystal
The edge light leakage phenomena of display backlight module
Accompanying drawing explanation
Figure 1A is the schematic diagram that existing backlight module produces bright line when 28.8 degree, angle of strabismus；
Figure 1B is the schematic diagram that existing backlight module produces bright line when 32.6 degree, angle of strabismus；
Fig. 1 C is the schematic diagram that existing backlight module produces bright line when 37.7 degree, angle of strabismus；
Fig. 1 D is the schematic diagram that existing backlight module produces bright line when 50.9 degree, angle of strabismus；
The LCD backlight module tangent plane structural representation that Fig. 2 A provides for the embodiment of the present invention one；
Fig. 2 B is that in the embodiment of the present invention one, light is scattered schematic diagram by light guide plate side；
Fig. 3 is the leaded light that in the embodiment of the present invention, whole sides in addition to incidence surface all have uneven region
Plate structure schematic diagram；
The LCD backlight module tangent plane structural representation that Fig. 4 provides for the embodiment of the present invention three；
Fig. 5 is to have void in the embodiment of the present invention three to cut the diffusion sheet schematic diagram of connecting line.
Detailed description of the invention
In the present invention, the light guide plate side of narrow frame LCD backlight module has uneven region,
Can by from light guide plate side-emitted out light scattering, be no longer concentrated into a bright line, and then avoid narrow
Frame LCD backlight module edge produces light leakage phenomena.
The embodiment of the present invention one provides a kind of LCD backlight module, including light source 1 and light guide plate 2,
Light guide plate 2 at least one side in addition to incidence surface has the uneven region that can be scattered by light.
As shown in Figure 2 A, the LCD backlight module tangent plane schematic diagram provided for the embodiment of the present invention one.
In Fig. 2 A, the light source 1 of the backlight module of liquid crystal display is positioned over the side of light guide plate 2, guide-lighting
Plate 2 is in the face of the incidence surface that side is light guide plate 2 21 of light source 1, and light guide plate 2 is in addition to incidence surface 21
Other sides are non-incident light side surface 22, and in the present invention, the non-incident light side surface 22 of light guide plate 2 has can be by
The uneven region 23 of light scattering, when there being light to incide on uneven region 23, light is no longer along one
Direction is reflected, but with scattering form reflection, as shown in Figure 2 B, so that incide non-incident light side surface
The light of 22 is no longer concentrated into a bright line, it is to avoid narrow frame LCD backlight module edge light leak.
Preferably, in the embodiment of the present invention, as it is shown on figure 3, on the whole sides in addition to incidence surface 21
All there is the uneven region 23 that can be scattered by light, so that complete in addition to incidence surface in backlight module
The light inciding its surface can be scattered by side, portion, will not produce bright line so that narrow frame module exists
All without there being light leakage phenomena under the angle of strabismus in each orientation.
Preferably, the Zone Full of side can be made to uneven region by the embodiment of the present invention, make
Processing technology is simple.
Be more highly preferred to, in order to save raw material, can the only subregion on side, make not
Flat site, it is possible to reach to incide the light scattering of side, it is to avoid the purpose that bright line produces.
Preferably, in the embodiment of the present invention, the uneven region 23 on light guide plate 2 can use frosting technology
Light guide plate non-incident light side surface 22 is carried out frosted atomization process, forms the irregular frosting of surface configuration,
Make the light launched by light guide plate 2 non-incident light side surface 22 be scattered, be no longer concentrated into a bright line.
Preferably, in the embodiment of the present invention, the light source of the backlight module of liquid crystal display can be LED light source,
LED light source uses DC source, it is possible to increase the service life.
In the LCD backlight module provided in the embodiment of the present invention, the non-incident light side surface of light guide plate is wrapped
Containing the uneven region that light can be scattered so that the luminous reflectance inciding its surface can scatter, and does not assembles
One bright line of middle one-tenth, under bigger angle of strabismus, would not observe that bright line, it is to avoid narrow frame liquid crystal display
The edge light leakage phenomena of device backlight module.
The embodiment of the present invention two additionally provides a kind of liquid crystal display, and this liquid crystal display includes LCD
LCD backlight module involved in plate and embodiment one, forms the backlight module of this liquid crystal display
Composition identical with embodiment one with function, do not repeat them here.
The liquid crystal display that the embodiment of the present invention two provides, can be by light owing to having on light guide plate in backlight module
The uneven region of line scattering, it is possible to observe bright line when avoiding angle of strabismus, it is to avoid edge light leak.
The embodiment of the present invention three provides another kind of LCD backlight module, the present embodiment based on enforcement
The goal of the invention that example one is identical, makes to incide the luminous reflectance on light guide plate side in addition to incidence surface out
Light scattering.
In the embodiment of the present invention, as shown in Figure 4, LCD backlight module includes light source 1, light guide plate
2 and the diffusion sheet 3 that is formed on light guide plate 2, light source 1 is placed on the side of light guide plate 2, light guide plate 2
In the face of the incidence surface that one side is light guide plate 21 of light source 1, diffusion sheet 3 is coated with light guide plate 2 except incidence surface
At least one side beyond 21.The embodiment of the present invention utilizes there is the diffusion sheet that can be scattered by light, bag
Cover the side in addition to incidence surface of light guide plate, not only simplify processing technology, and can make to incide to lead
The light of tabula rasa side incides on diffusion sheet, makes light scatter, be no longer concentrated into a bright line, it is to avoid narrow
The edge light leak of frame LCD backlight module.
Concrete, the embodiment of the present invention is placed on the preferable LED light source of light source of light guide plate side, LED
Light source uses DC source, it is possible to increase the service life.
Preferably, in the embodiment of the present invention, diffusion sheet 3 can be by complete in addition to incidence surface 21 of light guide plate
Side, portion is all coated with, and be more highly preferred to, the Zone Full of non-incident light side surface 22 can be coated with, thus
The whole non-incident light side surface 22 in addition to incidence surface 21 are made in backlight module to be scattered by light, will not
Produce bright line so that narrow frame module under the angle of strabismus in each orientation all without there being light leakage phenomena.
Being more highly preferred to, in order to save diffusion sheet, diffusion sheet can only be coated with the subregion on side.
Preferably, in the embodiment of the present invention, it is achieved diffusion sheet is coated with light guide plate at least in addition to incidence surface
At least one part of individual side, can be coated with according to diffusion sheet on the basis of the making of original diffusion sheet 3
The size of lateral side regions, extends diffusion sheet, and, for the ease of the bending of diffusion sheet, can be at diffusion sheet
Making, between 3 cladding light guide plate parts and the former part being formed on light guide plate, the connecting line 31 that void is cut, void is cut
Connecting line 31 be parallel to the edge line that light guide plate 2 intersects with diffusion sheet 3, as shown in Figure 5.Can be
On the basis of not changing the processing technology of original backlight module, the connecting line 31 cut along void by diffusion sheet 3 is curved
Folding, so that it may the side of cladding light guide plate.
In the embodiment of the present invention, the diffusion sheet cladding light guide plate with light scattering process is utilized easily to be formed bright
The lateral side regions of line, on the basis of the processing technology not changing original backlight module, makes to incide light guide plate side
The light scattering in face, it is to avoid edge light leakage phenomena.
The embodiment of the present invention four additionally provides a kind of liquid crystal display, and this liquid crystal display includes LCD
LCD backlight module in plate and embodiment three, forms the structure of the backlight module of this liquid crystal display
Become identical with embodiment three with function, do not repeat them here.
The liquid crystal display that the embodiment of the present invention four provides, owing to, in backlight module, having light scattering
The region easily producing bright line of the diffusion sheet cladding light guide plate other sides in addition to incidence surface, it is possible to
Avoid observing bright line during angle of strabismus, it is to avoid edge light leak.
Liquid crystal display involved by embodiment one to embodiment four and LCD backlight mould in the present invention
Group, can apply to Electronic Paper, LCD TV, liquid crystal display, DPF, mobile phone, flat board electricity
Any product with display function such as brain or parts.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (5)
1. a LCD backlight module, including light source, light guide plate be formed on described light guide plate
Diffusion sheet, described light guide plate is in the face of the incidence surface that one side is light guide plate of light source, it is characterised in that institute
State diffusion sheet cladding described light guide plate at least one side in addition to described incidence surface；At least one side described
Face is the whole sides in addition to incident side, and described diffusion sheet is coated with the Zone Full of described side；
Described diffusion sheet is coated with between described light guide plate part and the former part being formed on light guide plate has void
The connecting line cut.
2. backlight module as claimed in claim 1, it is characterised in that the connecting line that described void is cut is parallel
In the edge line that described light guide plate intersects with described diffusion sheet.
3. the backlight module as described in any one of claim 1-2, it is characterised in that described light source is placed
Side at described light guide plate.
4. backlight module as claimed in claim 3, it is characterised in that described light source is LED light source.
5. a liquid crystal display, including display panels, it is characterised in that also include claim
Backlight module described in any one of 1-4, and described backlight module is positioned at the lower section 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103292211A CN103292211A (en) | 2013-09-11 |
| CN103292211B true CN103292211B (en) | 2016-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210299618.3A Active CN103292211B (en) | 2012-08-21 | 2012-08-21 | LCD backlight module and liquid crystal display |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6583623B2 (en) * | 2015-07-24 | 2019-10-02 | 日本電気硝子株式会社 | Glass plate for light guide plate |
| 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 |
| CN105204229B (en) * | 2015-10-20 | 2018-09-04 | 武汉华星光电技术有限公司 | Have the backlight module and liquid crystal display device of on-plane surface lateral structure |
| CN105759335B (en) * | 2015-12-18 | 2019-07-05 | 上海天马微电子有限公司 | Light guide plate, backlight module and 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 |
| 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 |
| CN107229093B (en) * | 2017-06-30 | 2020-05-22 | 厦门天马微电子有限公司 | Side light type backlight module, light source and display panel thereof |
| 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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| CN101619825A (en) * | 2009-08-06 | 2010-01-06 | 友达光电股份有限公司 | Backlight module for reducing light leakage |
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| CN103292211A (en) | 2013-09-11 |
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