CN102096233A - Light guide plate for liquid crystal display, backlight module, and liquid crystal display device - Google Patents
Light guide plate for liquid crystal display, backlight module, and liquid crystal display device Download PDFInfo
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- CN102096233A CN102096233A CN2009101889248A CN200910188924A CN102096233A CN 102096233 A CN102096233 A CN 102096233A CN 2009101889248 A CN2009101889248 A CN 2009101889248A CN 200910188924 A CN200910188924 A CN 200910188924A CN 102096233 A CN102096233 A CN 102096233A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 55
- 239000011159 matrix material Substances 0.000 claims abstract description 21
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention relates to a light guide plate for liquid crystal display, a backlight module, and a liquid crystal display device. The two sides of the light guide plate are provided with light sources; and the light guide plate is provided with a black matrix for shading light. The light guide plate is characterized by being provided with a plurality of dots which are staggered from the black matrix, wherein the arrangement density of the dots at positions farther away from the light sources on the two sides on the light guide plate is higher; the arrangement density of the dots at positions closer to the light sources on the two sides on the light guide plate is lower; and the area of each dot is smaller than that of a liquid crystal pixel. By controlling the size and distribution of the dots of the light guide plate, the emergent position of the light guide plate is adjusted according to the size of the liquid crystal pixel and the position of the black matrix, so that emergent light keeps away from the black matrix and completely passes through a pervious area of a color filter, and the brightness of a liquid crystal screen is improved.
Description
Technical field
The present invention relates to light guide plate, more particularly, relate to a kind of light guide plate of liquid crystal display, module backlight and liquid crystal indicator of being used for.
Background technology
Along with development of science and technology, the liquid crystal reality technology is more and more ripe, and TV is also from using traditional kinescope liquid crystal display till now.LCDs is passive luminous display screen.Liquid crystal itself is not luminous, so LCDs needs module backlight that light source is provided, divides from the classification of light source, can be divided into CCFL module backlight, LED-backlit module etc.The LED-backlit module is easy to carry out reasons such as subregion control because its color reducibility is good, becomes the main flow backlight of LCDs in the future.The LED-backlit module can be divided into side view LED module backlight and direct-light type LED backlight module again according to the difference of LED position, side view LED module backlight uses light guide plate because of it, can accomplish ultra-thin, in LCD TV lightening today that more and more becomes the market mainstream, so the side of liquid crystal display module backlight has also obtained large-area application.The brightness of LCD TV generally all is that the transmitance of liquid crystal panel determines jointly by module brightness backlight.In general, the design of module backlight all is an independent design, and the transmitance of liquid crystal panel is all fixed.Never the people goes to design light guide plate at different liquid crystal specially, and then makes special-purpose module backlight.
Summary of the invention
The technical problem to be solved in the present invention is, do not have the special-purpose light guide plate and the defective of module backlight at the liquid crystal panel of prior art, and a kind of light guide plate of liquid crystal display, module backlight and liquid crystal indicator of being used for is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of light guide plate that is used for liquid crystal display, both sides in described light guide plate are provided with light source, described light guide plate is provided with the black matrix" that is used for shading, form a plurality of sites on described light guide plate, these a plurality of sites are arranged on the position of staggering mutually with described black matrix"; On described light guide plate, more away from the position of both sides light source, the site density of arranging is big more; More near the position of both sides light source, the site density of arranging is more little; The area size of each site is all less than liquid crystal pixel.
In light guide plate of the present invention, the shape of each site is respectively circle or regular polygon.
In light guide plate of the present invention, these a plurality of sites are the row shape and distribute.
According to another aspect of the present invention, a kind of module backlight is provided, comprise the light guide plate that is used for liquid crystal display and be positioned at the light source of described light guide plate both sides, described light guide plate is provided with the black matrix" that is used for shading, form a plurality of sites on described light guide plate, these a plurality of sites are arranged on the position of staggering mutually with described black matrix"; On described light guide plate, more away from the position of both sides light source, the site density of arranging is big more; More near the position of both sides light source, the site density of arranging is more little; The area size of each site is all less than liquid crystal pixel.
In module backlight of the present invention, the shape of each site is respectively circle or regular polygon.
In module backlight of the present invention, these a plurality of sites are the row shape and distribute.
According to a further aspect of the invention, a kind of liquid crystal indicator is provided, comprise module backlight, described module backlight comprises the light guide plate that is used for liquid crystal display and is positioned at the light source of described light guide plate both sides, described light guide plate is provided with the black matrix" that is used for shading, it is characterized in that form a plurality of sites on described light guide plate, these a plurality of sites are arranged on the position of staggering mutually with described black matrix"; On described light guide plate, more away from the position of both sides light source, the site density of arranging is big more; More near the position of both sides light source, the site density of arranging is more little; The area size of each site is all less than liquid crystal pixel.
In module backlight of the present invention, the shape of each site is respectively circle or regular polygon.
In module backlight of the present invention, these a plurality of sites are the row shape and distribute.
Implement the light guide plate of liquid crystal display, module backlight and the liquid crystal indicator of being used for of the present invention, has following beneficial effect: according to the liquid crystal panel pixel size, and the position of black matrix", size and distribution by the control light guide plate mesh point, adjust the optical position that of light guide plate, make the bright dipping of light guide plate avoid black matrix", all pass through the photic zone of colored filter, and then improved the brightness of liquid crystal display.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation that the present invention is used for light guide plate one embodiment of liquid crystal display;
Fig. 2 is the vertical view of Fig. 1.
Embodiment
As illustrated in fig. 1 and 2, at first embodiment that is used for the light guide plate of liquid crystal display of the present invention, because module backlight and its corresponding innovative point of liquid crystal indicator of relating to only are light guide plate 1, therefore remainder is not shown in the diagram comes out, be provided with light source 2 in the both sides of light guide plate 1, light guide plate is provided with the black matrix" that is used for shading, and 1 forms a plurality of sites 11 on light guide plate, and these a plurality of sites 11 are arranged on the position of staggering mutually with black matrix"; On light guide plate 1, more away from the position of both sides light source, the site density of arranging is big more; More near the position of both sides light source, the site density of arranging is more little; The area size of each site is all less than liquid crystal pixel.
In a preferred embodiment, the shape of each site 11 is respectively circle or regular polygon.These a plurality of sites are the row shape and distribute.
When specific design, determine every factor of liquid crystal display brightness by analysis, as can be known, the light transmission rate of liquid crystal panel and liquid crystal display overall brightness have very big relation, and an aperture opening ratio that big factors is a liquid crystal panel of the light transmission rate of decision liquid crystal panel.Liquid crystal panel is made up of TFT (membrane transistor) and CF (colored filter) two sides, owing to need have BM (BLACK MARTIX, black matrix") covers frame glue and TFT switch, all has BM on the CF, and BM itself is light tight, so-called aperture opening ratio promptly is that liquid crystal panel CF (colored filter) goes up except that BM the ratio that other parts are shared.Therefore being covered and impervious light by BM, is the key factor that influences liquid crystal display brightness.
Based on this, the invention provides a kind of light guide plate method for designing.The reflective surface of light guide plate 1 has site 11, and the size of site 11 is in the near position of distance light source, and density is little, and away from the position of light source, density is big.
At first according to the size of liquid crystal cell, i.e. the size of each pixel decides the site size of light guide plate.If the pixel size of liquid crystal panel is the rectangle of 0.25*0.35mm, then we can select the site size, and the site size is the circle of 0.25mm diameter.Selection less than the circle of liquid crystal panel pixel as the purpose of site is, the light that the site that makes each reflection source send the light guide plate of light reflects can both be effectively sees through from the penetrating region of CF.And can not blocked by BM.Again according to the distance of distance light source relation, the light guide plate mesh point that sets size is listed as by dredging to solid matter.The light guide plate of utilization the method design, it utilizes the light of light source all can effectively pass through the CF of liquid crystal panel, and is not blocked by BM, can reach the effect that improves the integral light-transmitting rate, reaches higher brightness.
The present invention describes by several specific embodiments, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention.In addition, at particular condition or concrete condition, can make various modifications to the present invention, and not depart from the scope of the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole embodiments that fall in the claim scope of the present invention.
Claims (9)
1. light guide plate that is used for liquid crystal display, both sides in described light guide plate are provided with light source, and described light guide plate is provided with the black matrix" that is used for shading, it is characterized in that, form a plurality of sites on described light guide plate, these a plurality of sites are arranged on the position of staggering mutually with described black matrix"; On described light guide plate, more away from the position of both sides light source, the site density of arranging is big more; More near the position of both sides light source, the site density of arranging is more little; The area size of each site is all less than liquid crystal pixel.
2. light guide plate according to claim 1 is characterized in that the shape of each site is respectively circle or regular polygon.
3. light guide plate according to claim 1 is characterized in that, these a plurality of sites are the row shape and distribute.
4. module backlight, comprise the light guide plate that is used for liquid crystal display and be positioned at the light source of described light guide plate both sides, described light guide plate is provided with the black matrix" that is used for shading, it is characterized in that, form a plurality of sites on described light guide plate, these a plurality of sites are arranged on the position of staggering mutually with described black matrix"; On described light guide plate, more away from the position of both sides light source, the site density of arranging is big more; More near the position of both sides light source, the site density of arranging is more little; The area size of each site is all less than liquid crystal pixel.
5. module backlight according to claim 4 is characterized in that the shape of each site is respectively circle or regular polygon.
6. module backlight according to claim 4 is characterized in that, these a plurality of sites are the row shape and distribute.
7. liquid crystal indicator, comprise module backlight, described module backlight comprises the light guide plate that is used for liquid crystal display and is positioned at the light source of described light guide plate both sides, described light guide plate is provided with the black matrix" that is used for shading, it is characterized in that, form a plurality of sites on described light guide plate, these a plurality of sites are arranged on the position of staggering mutually with described black matrix"; On described light guide plate, more away from the position of both sides light source, the site density of arranging is big more; More near the position of both sides light source, the site density of arranging is more little; The area size of each site is all less than liquid crystal pixel.
8. module backlight according to claim 7 is characterized in that the shape of each site is respectively circle or regular polygon.
9. module backlight according to claim 7 is characterized in that, these a plurality of sites are the row shape and distribute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101889248A CN102096233A (en) | 2009-12-14 | 2009-12-14 | Light guide plate for liquid crystal display, backlight module, and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101889248A CN102096233A (en) | 2009-12-14 | 2009-12-14 | Light guide plate for liquid crystal display, backlight module, and liquid crystal display device |
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| CN102096233A true CN102096233A (en) | 2011-06-15 |
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| CN2009101889248A Pending CN102096233A (en) | 2009-12-14 | 2009-12-14 | Light guide plate for liquid crystal display, backlight module, and liquid crystal display device |
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| CN (1) | CN102096233A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018803A (en) * | 2013-01-02 | 2013-04-03 | 深超光电（深圳）有限公司 | Brightness enhancement film and liquid crystal display device with same |
| CN103308975A (en) * | 2013-07-08 | 2013-09-18 | 苏州天华有色金属制品有限公司 | Light guide plate with light incident bilateral sides |
| CN103926746A (en) * | 2014-05-04 | 2014-07-16 | 深圳市华星光电技术有限公司 | Method for improving uniformity of luminance of side edge type curved surface module |
| CN104613385A (en) * | 2015-02-26 | 2015-05-13 | 深圳市华星光电技术有限公司 | Liquid crystal display and backlight module |
| CN106151960A (en) * | 2015-03-25 | 2016-11-23 | 群创光电股份有限公司 | Backlight module and application thereof |
| CN111338128A (en) * | 2020-04-10 | 2020-06-26 | 马鞍山晶智科技有限公司 | Transparent light source system for display device |
| CN113552747A (en) * | 2020-04-24 | 2021-10-26 | 元太科技工业股份有限公司 | Front light module and display device with same |
Citations (3)
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| JPH08146418A (en) * | 1994-11-24 | 1996-06-07 | Sekisui Chem Co Ltd | Film for improvement in image quality for liquid crystal display device |
| CN2392981Y (en) * | 1999-10-28 | 2000-08-23 | 宋义 | Uniform efficient front light-source |
| TW200411231A (en) * | 2002-12-31 | 2004-07-01 | Hon Hai Prec Ind Co Ltd | Light guide plate and back light system with the same |
-
2009
- 2009-12-14 CN CN2009101889248A patent/CN102096233A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08146418A (en) * | 1994-11-24 | 1996-06-07 | Sekisui Chem Co Ltd | Film for improvement in image quality for liquid crystal display device |
| CN2392981Y (en) * | 1999-10-28 | 2000-08-23 | 宋义 | Uniform efficient front light-source |
| TW200411231A (en) * | 2002-12-31 | 2004-07-01 | Hon Hai Prec Ind Co Ltd | Light guide plate and back light system with the same |
Non-Patent Citations (1)
| Title |
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| 刘午平，刘建清: "《液晶彩色显示器易修精要》", 31 October 2008, 人民邮电出版社 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018803A (en) * | 2013-01-02 | 2013-04-03 | 深超光电（深圳）有限公司 | Brightness enhancement film and liquid crystal display device with same |
| CN103308975A (en) * | 2013-07-08 | 2013-09-18 | 苏州天华有色金属制品有限公司 | Light guide plate with light incident bilateral sides |
| CN103926746A (en) * | 2014-05-04 | 2014-07-16 | 深圳市华星光电技术有限公司 | Method for improving uniformity of luminance of side edge type curved surface module |
| WO2015168967A1 (en) * | 2014-05-04 | 2015-11-12 | 深圳市华星光电技术有限公司 | Method for improving uniformity of luminance of side-edge curved surface module |
| CN103926746B (en) * | 2014-05-04 | 2016-06-22 | 深圳市华星光电技术有限公司 | Side type curved surface module brightness uniformity ameliorative way |
| CN104613385A (en) * | 2015-02-26 | 2015-05-13 | 深圳市华星光电技术有限公司 | Liquid crystal display and backlight module |
| CN106151960A (en) * | 2015-03-25 | 2016-11-23 | 群创光电股份有限公司 | Backlight module and application thereof |
| CN106151960B (en) * | 2015-03-25 | 2019-06-21 | 群创光电股份有限公司 | Backlight module and its application |
| CN111338128A (en) * | 2020-04-10 | 2020-06-26 | 马鞍山晶智科技有限公司 | Transparent light source system for display device |
| CN113552747A (en) * | 2020-04-24 | 2021-10-26 | 元太科技工业股份有限公司 | Front light module and display device with same |
| CN113552747B (en) * | 2020-04-24 | 2024-04-02 | 元太科技工业股份有限公司 | Front light module and display device with same |
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Application publication date: 20110615 |