CN101685180A - Light guide plate favourable for even distribution of light - Google Patents
Light guide plate favourable for even distribution of light Download PDFInfo
- Publication number
- CN101685180A CN101685180A CN200810200637A CN200810200637A CN101685180A CN 101685180 A CN101685180 A CN 101685180A CN 200810200637 A CN200810200637 A CN 200810200637A CN 200810200637 A CN200810200637 A CN 200810200637A CN 101685180 A CN101685180 A CN 101685180A
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- light
- light guide
- guide plate
- grooves
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- 238000009826 distribution Methods 0.000 title abstract description 5
- 230000002349 favourable effect Effects 0.000 title abstract 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 7
- 239000000126 substance Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- -1 acryl Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a light guide plate favourable for even distribution of light, relating to a light guide plate, in particular to a light guide plate more favourable for even distribution of light. The light guide plate comprises a light guide screen formed by plural staggered grooves; relatively to a hollow or protruding screen dot, the light guide screen formed by plural staggered grooveshas the characteristic of even light guidance, can reduce light guide plate body thickness and has no dark space. The light guide plate body is prepared from PMMA which has the characteristics of thermostability and long service life. Plural grooves comprise plural breadthwise-arranged grooves and plural lengthways-arranged grooves, wherein the plural breadthwise-arranged grooves and the plural lengthways-arranged grooves are mutually staggered. In the above design, plural breadthwise-arranged grooves and plural lengthways-arranged grooves are mutually staggered, and thus light can be fully reflected to a light emitting surface so as to improve light use ratio.
Description
Technical field
The present invention relates to a kind of light guide plate, be specifically related to a kind of equally distributed light guide plate of light that helps more.
Background technology
Light guide plate is to be base material with acryl (PMMA), is widely used in the backlight module technology of LCD display, notebook computer, advertising lamp box, is the high-tech product that line source is changed into area source.At present, the preparation technology of the light guide plate of selling on the market mainly contains printing-type, engraving formula, chemical method for etching and direct four kinds of injection mouldings.
Wherein printing-type is to utilize the light guide ink with high reflection and high refraction on high acrylic block surface, stamps regular leaded light site by optical principle.After acrylic plate is finished sharp processing, in the mode of serigraphy the leaded light site is imprinted on the surface, the material of this site has the effect with light refraction, high reflection, will change direction complanation light from the light that side injects.This method has the double effects with light refraction and high reflection, good brightness, and manufacture craft is simple to be grasped easily, invests for a short time, and cost of manufacture is low, can both make flexibly to large-sized light guide plate from small size.But it is poor slightly to the ray refraction effect, can not be high temperature resistant, and the leaded light site can be out of shape under the lamp temperatures condition with higher, even can variable color.
The engraving formula is to utilize engraving machine on high acrylic block surface, is formed with regular shrinkage pool dot matrix by the optical principle engraving.When light injects from the acrylic plate side, these shrinkage pool dot matrix play the effect with light refraction, with light to plane refraction complanation light.The engraving manufacturing process of engraving formula light guide plate is the technology of physical property, and is high temperature resistant, corrosion-resistant, and the life-span of light guide plate is longer, better to the refraction effect of light, the brightness height.But light is inhomogeneous, complex manufacturing, cost height.
Chemical method for etching is earlier mould to be made in the site according to the backlight product size, utilizes mould and acrylic plate in conjunction with by chemical method acrylic plate being corroded, and makes acrylic plate generate the site, and its principle of work is identical with the engraving formula.Refraction effect to light is better, the brightness height.Investment is big, and the product of different size will have different moulds, can not revise the size parameter of site behind the mould shape, die sinking is success once, otherwise scraps, and production technology is difficult to be grasped, large-scale light guide plate is made difficulty, and this method is primarily aimed at little LCD backlight source product.
Directly injection moulding is according to backlight product size and thickness the site to be designed on injection mold, utilizes the PMMA micelle directly to be injection molded into light guide plate by injection machine, and principle of work is identical with the engraving formula.Refraction effect to light is better, the brightness height.Investment is big, the product of different size will have different moulds, the expense of plastic mould is higher, can not revise the size parameter of site behind the mould shape, die sinking is success once, otherwise scraps, and production technology is difficult to be grasped, can not produce large-scale light guide plate, this method is primarily aimed at little LCD backlight source product.
Summary of the invention
The invention provides a kind of equally distributed light guide plate of light that helps, have ultra-thin superbright, leaded light evenly, no dark space, high temperature resistant, the life-span long, the installation and maintenance characteristic of simple.
In order to achieve the above object, technical scheme of the present invention is as follows:
A kind of equally distributed light guide plate of light that helps, comprise the light guide plate plate body, the light guide plate plate body is provided with the leaded light net that exiting surface and that an incidence surface, that is positioned at light guide plate plate body side is positioned at light guide plate plate body front is positioned at light guide plate plate body back, it is characterized in that, comprise by the staggered leaded light net that constitutes of a plurality of grooves.
The leaded light net at the existing light guide plate plate body back side, generally be adopt the light guide ink reticulated printing mode with the leaded light wire mark at the light guide plate plate body back side, can be printed as site or staggered line; Perhaps adopt the mode of mechanical mode or chemistry to generate depression or outstanding site.And generation has changed the situation of the site that just generates depression in the past or give prominence to by the staggered leaded light net that constitutes of a plurality of grooves among the present invention.
The staggered leaded light net that constitutes of a plurality of grooves has the advantages that with respect to depression or outstanding site leaded light is even, can reduce light guide plate plate body thickness, no dark space.
The preparation material of described light guide plate plate body is a polymetylmethacrylate.The characteristics that this material has is high temperature resistant, the life-span is long.Because leaded light net of the present invention, directly on the light guide plate plate body, generate, so the leaded light netting gear that is imprinted on the light guide plate plate body back side with respect to the mode of original employing light guide ink reticulated printing has characteristics high temperature resistant, that the life-span is long.
Described a plurality of grooves comprise a plurality of transversely arranged grooves and a plurality of grooves of vertically arranging, and a plurality of transversely arranged grooves and a plurality of grooves of vertically arranging are interlaced.
The described groove that a plurality of are vertically arranged is parallel with incidence surface, and from incidence surface one side, to a side relative with incidence surface, the spacing of the groove of adjacent vertical arrangement reduces gradually.
Adopt a plurality of transversely arranged grooves and a plurality of grooves of vertically arranging interlaced in the above-mentioned design, make light can fully reflex to exiting surface, to improve the utilization factor of light.Stronger at incidence surface one sidelight, along with the increase of distance incidence surface distance, light intensity weakens gradually, and the structure that the present invention adopts the spacing of the groove of adjacent vertical arrangement to reduce has gradually effectively improved the homogeneity of distribution of light.
By above-mentioned technology as seen, structure of the present invention is flexible, has practicality widely, can be widely used in ultrathin lamp box, module backlight, direction board, guideboard, upholstery etc.
Description of drawings
Fig. 1 is a kind of schematic perspective view that helps the equally distributed light guide plate of light for the present invention;
Fig. 2 is the sectional view of Fig. 1 along the A-A direction.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
With reference to Fig. 1, a kind of equally distributed light guide plate of light that helps comprises light guide plate plate body 1, and light guide plate plate body 1 left side is an incidence surface 11, and top (front) is exiting surface 12, the leaded light net 13 of light guide plate plate body 1 below (back).Suitable reflective structure can be assembled in leaded light net 13 belows, as reflector layer, or reflective membrane, technology emphasis of the present invention does not lie in described reflective structure, and reflective structure can adopt reflector layer commonly used, or reflective membrane.
In order to make leaded light net 13 have characteristics high temperature resistant, that the life-span is long, adopt the physics depression of light guide plate plate body 1 to constitute leaded light net 13.The preferred polymetylmethacrylate of preparation material of light guide plate plate body 1.The characteristics that this material has is high temperature resistant, the life-span is long.
In order to make leaded light net 13 have the advantages that leaded light is even, can reduce light guide plate plate body 1 thickness, no dark space, adopt a plurality of grooves 14 staggered formation leaded light nets 13.A plurality of grooves 14 comprise a plurality of transversely arranged grooves 14 and a plurality of grooves of vertically arranging 14, and a plurality of transversely arranged grooves 14 and a plurality of grooves of vertically arranging 14 are interlaced.
With reference to Fig. 2, described grooves 14 that a plurality of are vertically arranged are parallel with incidence surface, from incidence surface 11 1 sides, arrive a side relative with incidence surface 11, and the spacing of the groove 14 of adjacent vertical arrangement reduces gradually.The transverse section of a plurality of transversely arranged grooves 14 and a plurality of grooves of vertically arranging 14 is " V " font.
Adopt a plurality of transversely arranged grooves 14 and a plurality of grooves of vertically arranging 14 interlaced in the above-mentioned design, make light can fully reflex to exiting surface 12, to improve the utilization factor of light.Stronger at incidence surface 11 1 sidelights, along with the increase of distance incidence surface 11 distances, light intensity weakens gradually, and the structure that the present invention adopts the spacing of the groove 14 of adjacent vertical arrangement to reduce has gradually effectively improved the homogeneity of distribution of light.
Practice shows, adopts the transverse section to be the groove 14 of " V " font, can play the effect of good reflection, refraction and scattering to light simultaneously.Therefore effectively promoted light guide plate plate body 1 the leaded light homogeneity, can reduce light guide plate plate body 1 thickness, minimizing even eliminate the dark space.
By foregoing as seen, the present invention is simple in structure, does not adopt complicated physical arrangement; Manufacture craft is simple, with respect to original chemical method for etching, does not need to expend chemical reagent, does not need special mould, has reduced the pollution to environment, has reduced production cost; With respect to original printing-type method, increased reliability, increased heat-resisting quantity, improved light utilization efficiency; With respect to engraving formula method, improved the leaded light homogeneity, reduced light guide plate plate body 1 thickness, minimizing even eliminate the dark space; With respect to direct injection moulding, do not need special mould to reduce production cost.
By above-mentioned technology as seen, structure of the present invention is flexible, has practicality widely, can be widely used in ultrathin lamp box, module backlight, direction board, guideboard, upholstery etc.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not subjected to the restriction of above-mentioned using method; that describes in above-mentioned using method and the instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. one kind helps the equally distributed light guide plate of light, comprise the light guide plate plate body, the light guide plate plate body is provided with the leaded light net that exiting surface and that an incidence surface, that is positioned at light guide plate plate body side is positioned at light guide plate plate body front is positioned at light guide plate plate body back, it is characterized in that, comprise by the staggered leaded light net that constitutes of a plurality of grooves.
2. a kind of equally distributed light guide plate of light that helps according to claim 1 is characterized in that the preparation material of described light guide plate plate body is a polymethylmethacrylate.
3. a kind of equally distributed light guide plate of light that helps according to claim 1, it is characterized in that, described a plurality of grooves comprise a plurality of transversely arranged grooves and a plurality of grooves of vertically arranging, and a plurality of transversely arranged grooves and a plurality of grooves of vertically arranging are interlaced.
4. a kind of equally distributed light guide plate of light that helps according to claim 3, it is characterized in that the described groove that a plurality of are vertically arranged is parallel with incidence surface, from incidence surface one side, to a side relative with incidence surface, the spacing of the groove of adjacent vertical arrangement reduces gradually.
5. a kind of equally distributed light guide plate of light that helps according to claim 1 is characterized in that the transverse section of described a plurality of grooves is " V " font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810200637A CN101685180A (en) | 2008-09-27 | 2008-09-27 | Light guide plate favourable for even distribution of light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810200637A CN101685180A (en) | 2008-09-27 | 2008-09-27 | Light guide plate favourable for even distribution of light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101685180A true CN101685180A (en) | 2010-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810200637A Pending CN101685180A (en) | 2008-09-27 | 2008-09-27 | Light guide plate favourable for even distribution of light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101685180A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI494608B (en) * | 2014-03-19 | 2015-08-01 | 玉晶光電股份有限公司 | Edge-type three-dimensional image display device |
| US9494723B2 (en) | 2011-12-08 | 2016-11-15 | Lg Innotek Co., Ltd. | Display device |
-
2008
- 2008-09-27 CN CN200810200637A patent/CN101685180A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9494723B2 (en) | 2011-12-08 | 2016-11-15 | Lg Innotek Co., Ltd. | Display device |
| US9606284B2 (en) | 2011-12-08 | 2017-03-28 | Lg Innotek Co., Ltd. | Display device |
| TWI588548B (en) * | 2011-12-08 | 2017-06-21 | Ｌｇ伊諾特股份有限公司 | Display device |
| TWI494608B (en) * | 2014-03-19 | 2015-08-01 | 玉晶光電股份有限公司 | Edge-type three-dimensional image display device |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20100331 |