CN201548783U - Screen dot structure of liquid crystal television light conducting plate - Google Patents
Screen dot structure of liquid crystal television light conducting plate Download PDFInfo
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- CN201548783U CN201548783U CN2009202449306U CN200920244930U CN201548783U CN 201548783 U CN201548783 U CN 201548783U CN 2009202449306 U CN2009202449306 U CN 2009202449306U CN 200920244930 U CN200920244930 U CN 200920244930U CN 201548783 U CN201548783 U CN 201548783U
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- guide plate
- light guide
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- Planar Illumination Modules (AREA)
Abstract
The utility model relates to a screen dot structure of a liquid crystal television light conducting plate, which comprises round or square array screen dots which are distributed on an acrylic light conducting plate, wherein the structure is characterized in that sizes of screen dots of the acrylic light conducting plate are distributed from the circumference which is arrayed in a rectangle shape to the center to gradually increase by linearity, and a light entering zone of the light conducting plate is divided into a four-face distribution structure. The regular arrangement structure of screen dots is capable of solving problems of brightness and evenness of light conducting plates in large-size liquid crystal televisions, and enhancing effective quality of liquid crystal televisions.
Description
Technical field
The utility model relates to the structure of LCD TV light guide plate, especially the microgrid dot structure of LCD TV light guide plate.
Background technology
The LED-backlit LCD TV substitutes certainty that CCFL LCD TV backlight has been the TV development, and its gay colours performance is accepted by users, fails universal fully basic reason at present yet its high cost also is market.The LED LCD backlight is divided into two kinds of straight-down negative and photometry formulas, for large scale, in order to reach better brightness and homogeneity, the direct-type backlight selection that is inevitable, but the LED number that direct-type backlight needs is very many, so cost will be expensive a lot.In order to solve such problem, the photometry formula is backlight to be a kind of efficient ways, and it is a lot of that the number of its required LED will be lacked, and so cost just descends many; But the photometry formula restriction that is subjected to the TV size backlight, the oversize brightness and the homogeneity that then can't satisfy LCD TV, existing market photometry formula LCD TV can be accomplished more than 40 cun, so photometry formula LED-backlit LCD TV occupies one seat in market in the future.
Yet the core point of photometry formula LED-backlit is not a circuit to be driven, but module backlight, the core of module backlight is exactly a light guide plate micronetwork structure Design, so the quality of light guide plate design directly has influence on the effect quality of photometry formula LED-backlit LCD TV.
Photometry formula LED-backlit is exactly to utilize light guide plate to be the even face light of exporting from the front by the phototransformation that light source is imported from the light guide plate side.Light guide plate can be divided into flat board and clapboard by external structure, can be divided into printing-type and non-printing-type by the method for making of the micronetwork structure plan of bottom surface.Printing-type be bottom surface of light guide plate with high reflectance and not the shape such as circular or square of the ink printing of extinction print and form.Non-printing-type does not need printing process, utilizes precision die to make light guide plate form densely covered microscopic bumps when ejection formation, the similar printing-type of salient point effect site.
Experiment shows that the shape of scattering netted dot is little to the light scattering influence, and the rule of arranging of site then affects the uniformity coefficient and the brightness of output light to a great extent.
Summary of the invention
The purpose of this utility model provides a kind of lattice point structure of LCD TV light guide plate, and the rule structure of arranging of this site can solve the brightness and the homogeneity of the light guide plate of large scale liquid crystal TV, improves the effect quality of LCD TV.
The purpose of this utility model is achieved through the following technical solutions, be included in and be distributed with circular or square array site on the acrylic light guide plate sheet material, it is characterized in that: the size distribution of the site of this acrylic light guide plate increases progressively to the center is linear gradually around rectangular array, and the light incidence section of its light guide plate is divided into the four sides distributed architecture.
The size distribution of described site is linear to be increased progressively is that the size and the site of lattice point structure unit increases progressively apart from the linear ratio of the distance of light inlet, and the strip array site that is equally spaced with each light inlet around its rectangle is big or small identical.
Side distribution light incidence section is that the diagonal line with rectangular light guide plate is four districts that the boundary divides around the described light guide plate, and adjacent two zones in every any zone are symmetrical structure each other.
The thickness of described light guide plate is 6mm.
Characteristics of the present utility model are: by the frame mode of side incident around adopting 1., the light incidence section that has changed the light guide plate of original structure is both sides, has solved the brightness and the homogeneity of the light guide plate of large-sized monitor; 2. adopt certain formula apportion to arrange to site design, the site size is along with from the linear incremental variations rule of light source distance.Make the brightness and the homogeneity of light guide plate be improved.
Description of drawings
Fig. 1 is the law curve of site apart from light source;
Fig. 2 be around the light guide plate Region Segmentation synoptic diagram of side incident;
Fig. 3 is a micronetwork structured flowchart of the present utility model.
Embodiment
Come the utility model is done further detailed explanation below in conjunction with accompanying drawing:
As shown in Figure 1, be the law curve of site apart from light source, curve map x represents the distance of site apart from light inlet, y represents the radius of lattice point structure unit, following formula: Y=ax+b is then arranged 1., for light guide plate after the value of a and b, the radius y value of lattice point structure unit is linear increment apart from light inlet apart from x with the site in the formula.
For example: the value of a and b is not for being for 32 cun light guide plate, and a is 0.0088, b be 0.8087. to have put formula in order be Y=0.0088x+0.8087, unit is mm.
According to above-mentioned curve distribution rule, the version that the size distribution that the utility model takes to place on the equidistant grid of light guide plate the scattering netted dot diameter increases progressively gradually to the center around the site of rectangular array.
The light that led light source sends is coupled into after the light guide plate between bottom surface on the light guide plate and two sides back and forth from the light guide plate front end face, and total reflection advances to light guide plate terminal surface direction, when being mapped to the scattering netted dot of bottom surface, thereby reflected light is to all directions scattering and destroy total reflection condition part scattered light and have an opportunity to transmit light guide plate from upper bottom surface, becomes output light.
Below will be coupled into light guide plate from light source but do not run into the bottom surface scattering point or the light of no show light guide plate terminal surface abbreviates light conducting as, and be scattered the light of propagating after the scattering of site and be called scattered light in light guide plate, the light of going out from the upper bottom surface transmission is called output light.Light guide plate bottom surface site is by arrange control output uniformity of light and brightness to close rule by dredging from the light inlet to the end.When on pressing equidistant grid, placing scattering netted dot, if do not consider the influence of two sides light leak or add reflector plate in two sides, then for brightness output is evenly distributed, the site diameter should remain unchanged along the direction of transverse axis, and only is the function that changes along the longitudinal axis.Distribution curve is seen shown in Figure 1.
Fig. 2 be around the light guide plate Region Segmentation synoptic diagram of side incident, shown in the figure, light guide plate is divided into four zones of symmetry up and down, same zone is adopted in wherein laterally zygomorphic zone, left-right symmetric adopts same zone, promptly the four sides distribution light incidence section of this light guide plate is that the diagonal line with the rectangular distribution light guide plate is four districts that the boundary divides, and adjacent two zones in every any zone are symmetrical structure each other.The light incidence section of tradition photometry formula LCD TV light guide plate is both sides, be fully passable for small-size display, but for large scale photometry formula LCD TV, effect is not very good.The design of four side incidents can increase the brightness and the homogeneity of liquid crystal panel.
Utilize formula 1. simultaneously, but only in scope, be independent of each other at own zone.Obtain network arrangement as shown in Figure 3.The size distribution of site diameter is linear to be increased progressively, and the radius of lattice point structure unit and site increase progressively apart from the linear ratio of the distance of light inlet, and the strip array site that is equally spaced with each light inlet around its rectangle is big or small identical.Promptly on rectangular light guide plate, be distributed with many row's strip arrays, big or small identical with row's strip array site of each light inlet same distance on rectangle four limits.
Requirement according to different size, if both sides light inlet, only need change the requirement that the parameter of a and b just can satisfy the different size light guide plate, if all around side incident come according to the method described above the zoning just can accomplish around side incident and do not have influence on photodistributed homogeneity, according to facts have proved, the site of light guide plate and the ratio of network element are big more, optical uniformity is high more, brightness is big more, in like manner, the network element of light guide plate is more little, and brightness and homogeneity are good more, the height of site is low more, and brightness and homogeneity are good more.Every site size is along with all belonging to category of the present utility model from the linear linear function that increases progressively of light source distance.The side incident areal distribution adopts and all to belong to category of the present utility model shown in Fig. 2 structure all around.
It is that acryl has the high grade of transparency because of acrylic sheet property and advantage that light guide plate is selected the acryl material, and transmittance reaches 92%, and the good reputation of " plastic cement crystal " is arranged.And splendid weatherability is arranged, especially be applied to outdoorly, occupy the hat of other plastic cement, and have surface of good hardness and gloss concurrently, processing plasticity is big, can be made into various needed shapes and product.The rich color of a great variety (containing translucent colour table) of other sheet material, another characteristics are that slab still can be kept the high grade of transparency.
The thickness of the utility model light guide plate is selected 6mm, and the thickness of light guide plate is selected to depend on light-emitting area, if the too thick meeting of sheet material causes light loss, transmitance reduces, if the homogeneity of the too thin brightness of sheet material is again less than guarantee, therefore, selecting the thickness of light guide plate according to LED is that 6mm is an optimum efficiency.
Claims (4)
1. the lattice point structure of a LCD TV light guide plate, be included in and be distributed with circular or square array site on the acrylic light guide plate sheet material, it is characterized in that: the size distribution of the site of this acrylic light guide plate increases progressively to the center is linear gradually around rectangular array, and the light incidence section of its light guide plate is divided into the four sides distributed architecture.
2. the lattice point structure of a kind of LCD TV light guide plate according to claim 1, it is characterized in that: the size distribution of described site is linear to be increased progressively is that the size and the site of lattice point structure unit increases progressively apart from the linear ratio of the distance of light inlet, and the strip array site that is equally spaced with each light inlet around its rectangle is big or small identical.
3. the lattice point structure of a kind of LCD TV light guide plate according to claim 1, it is characterized in that: side distribution light incidence section is that the diagonal line with rectangular light guide plate is four districts that the boundary divides around the described light guide plate, and adjacent two zones in every any zone are symmetrical structure each other.
4. the lattice point structure of a kind of LCD TV light guide plate according to claim 1 is characterized in that: the thickness of described light guide plate is 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202449306U CN201548783U (en) | 2009-10-27 | 2009-10-27 | Screen dot structure of liquid crystal television light conducting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202449306U CN201548783U (en) | 2009-10-27 | 2009-10-27 | Screen dot structure of liquid crystal television light conducting plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201548783U true CN201548783U (en) | 2010-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202449306U Expired - Fee Related CN201548783U (en) | 2009-10-27 | 2009-10-27 | Screen dot structure of liquid crystal television light conducting plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201548783U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287717A (en) * | 2011-08-25 | 2011-12-21 | 上海交通大学 | Back light system with wave guide structure |
| CN102565915A (en) * | 2010-12-20 | 2012-07-11 | 和硕联合科技股份有限公司 | Light guide body |
| CN102606982A (en) * | 2011-01-21 | 2012-07-25 | 康佳集团股份有限公司 | Light guide plate and LED lamp with same |
| CN103323905A (en) * | 2013-07-08 | 2013-09-25 | 苏州天华有色金属制品有限公司 | Light guide plate capable of inletting light from centre |
| WO2013149546A1 (en) * | 2012-04-06 | 2013-10-10 | 北京京东方光电科技有限公司 | Light guide plate, backlight source and liquid crystal display device |
| CN103543487A (en) * | 2012-07-12 | 2014-01-29 | 厦门伟然科技有限公司 | Large-size light guide plate |
| CN107671421A (en) * | 2017-11-20 | 2018-02-09 | 苏州川普光电有限公司 | A kind of laser processing technology of light guide plate mesh point |
| CN109491006A (en) * | 2018-12-05 | 2019-03-19 | 苏州佳世达电通有限公司 | Backlight module |
-
2009
- 2009-10-27 CN CN2009202449306U patent/CN201548783U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565915A (en) * | 2010-12-20 | 2012-07-11 | 和硕联合科技股份有限公司 | Light guide body |
| CN102606982A (en) * | 2011-01-21 | 2012-07-25 | 康佳集团股份有限公司 | Light guide plate and LED lamp with same |
| CN102287717A (en) * | 2011-08-25 | 2011-12-21 | 上海交通大学 | Back light system with wave guide structure |
| WO2013149546A1 (en) * | 2012-04-06 | 2013-10-10 | 北京京东方光电科技有限公司 | Light guide plate, backlight source and liquid crystal display device |
| CN103543487A (en) * | 2012-07-12 | 2014-01-29 | 厦门伟然科技有限公司 | Large-size light guide plate |
| CN103543487B (en) * | 2012-07-12 | 2015-11-04 | 厦门伟然科技有限公司 | A kind of large-size light-conducting plate |
| CN103323905A (en) * | 2013-07-08 | 2013-09-25 | 苏州天华有色金属制品有限公司 | Light guide plate capable of inletting light from centre |
| CN107671421A (en) * | 2017-11-20 | 2018-02-09 | 苏州川普光电有限公司 | A kind of laser processing technology of light guide plate mesh point |
| CN109491006A (en) * | 2018-12-05 | 2019-03-19 | 苏州佳世达电通有限公司 | Backlight module |
| US10884289B2 (en) | 2018-12-05 | 2021-01-05 | Qisda Corporation | Backlight module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100811 Termination date: 20151027 |
|
| EXPY | Termination of patent right or utility model |