CN101303431A - Light guide plate and method for manufacturing light guide plate - Google Patents
Light guide plate and method for manufacturing light guide plate Download PDFInfo
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- CN101303431A CN101303431A CNA2008101041094A CN200810104109A CN101303431A CN 101303431 A CN101303431 A CN 101303431A CN A2008101041094 A CNA2008101041094 A CN A2008101041094A CN 200810104109 A CN200810104109 A CN 200810104109A CN 101303431 A CN101303431 A CN 101303431A
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Abstract
The invention relates to a light guide plate and a method for manufacturing the light guide plate. The light guide plate comprises a main body; the upper surface of the main body is coated with a photo diffusion material; the upper surface of the photo diffusion material is coated with a prism layer formed by a transparent material in a hot-pressing way. The method comprises the steps that: the upper surface of the main body of the light guide plate is coated with the photo diffusion material to form a diffusion layer; the upper surface of the photo diffusion material is coated with the transparent material; by the hot-pressing way, the transparent material is led to form the prism layer. Through the diffusion layer formed by the photo diffusion material coated on the upper surface of the main body of the light guide plate and the prism layer formed by the transparent material coated on the upper surface of the photo diffusion material in the hot-pressing way, the proposal causes the light guide plate, the diffusion layer and the prism layer to become a whole, thereby avoiding the further arrangement of a diffusion sheet and a prism sheet on the back light source, greatly reducing the cost and thickness of the back light source as well as lowering the product rejection rate caused by the assembly of the diffusion sheet and the prism sheet, reducing the procedure of assembling two layers of films and improving the assembling efficiency.
Description
Technical field
The present invention relates to the Backlight For Liquid Crystal Display Panels technology, relate in particular to a kind of method that can further reduce the light guide plate of backlight thickness and make light guide plate.
Background technology
At present, LCD (hereinafter to be referred as: backlight LCD) is divided into side-light type back light and direct-light-type backlight according to the difference of distribution of light sources position.Side-light type back light meets the slim requirement of current liquid crystal display, and can obtain highlighted, even planar light source, and nearly all notebook computer and various large-scale LCD display are all at the backlight that uses this structure.
Existing side-light type back light is made up of as cathode fluorescent tube, lampshade 5, reflecting plate 6 and backboard 7 light guide plate 1, diffuser plate 2, prismatic lens 3, light source 4 as shown in Figure 1.Fig. 2 is the backlight local structure enlarged diagram among Fig. 1, and as shown in Figure 2, light guide plate 1 comprises the site 12 of main body 11 and main body lower surface, and the top of main body 11 is disposed with two-layer diffusion sheet 2, one deck prismatic lens 3.
When assembling above-mentioned side-light type back light, light guide plate 1 overlaps with reflecting plate 6, uses the fluorescent tube 4 and the lampshade 5 engaging light guide plate 1 and end reflecting plates 6 that assemble, is positioned in the backboard 7, places optical film material on described light guide plate.
During backlight work, after the light that light source sends is coupled into light guide plate from light guide plate 1 front end face, total reflection back and forth between bottom surface on the light guide plate and two sides, advance to light guide plate terminal surface direction, when being mapped to the scattering netted dot 12 of bottom surface, reflected light is to all directions scattering and destroy total reflection condition, thus the part scattered light have an opportunity to transmit light guide plate from upper bottom surface, become output light.Diffusion sheet 2 will be exported light and spread, and guarantee that the light that penetrates is even; The light of 3 pairs of diffusions of prismatic lens compiles, and improves and penetrates light intensity, guarantees the brightness requirement of LCD.
The defective that prior art exists is, on the light guide plate diffusion sheet, prismatic lens must be set in addition, make the thickness of backlight further not reduce, can't satisfy current further ultra-thin requirement to backlight, and film material price is very high, can not effectively reduce entire backlight illuminator cost, on the operation technical matters, also increase the assembling procedure of back light source system, increase the fraction defective in the assembling process simultaneously.
Summary of the invention
The objective of the invention is to propose a kind of light guide plate in the backlight and make the method for light guide plate, to reduce the thickness of backlight, reach the effect that reduces assembling procedure simultaneously, thereby solve the multiple operation technical matters of backlight assembling flow path.
For achieving the above object, the invention provides a kind of light guide plate, comprise main body, described main body upper surface is coated with photodiffusion material, is coated with the layers of prisms that light transmissive material forms through the mode of hot pressing at the upper surface of described photodiffusion material.
The transmitance of the light of described photodiffusion material can be 1.4～2.0; The transmitance of the light of described light transmissive material can be 1.5～2.5; Described layers of prisms can be made up of boss; Described boss can be truncated rectangular pyramids.
The present invention also provides a kind of method of making light guide plate, comprising:
At body surfaces coating photodiffusion material, form diffusion layer;
Upper surface coating light transmissive material at described photodiffusion material;
Mode with hot pressing makes described light transmissive material form layers of prisms.
Such scheme forms diffusion layer by coating photodiffusion material on light guide plate main body, and form layers of prisms through the mode of hot pressing at the upper surface of described photodiffusion material coating light transmissive material, make light guide plate and diffusion layer and layers of prisms become one, avoided backlight that diffusion sheet and prismatic lens are set in addition, the cost and the thickness of backlight have been significantly reduced, satisfied current low cost and further ultra-thin requirement to backlight, reduced the product fraction defective that assembling diffusion sheet and prismatic lens cause simultaneously, reduce the operation of assembling two-layer diaphragm, improved packaging efficiency.
As further improvement, described layers of prisms has further increased brightness value by the boss prism structure, has improved the luminous intensity that penetrates light.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of side-light type back light in the prior art;
Fig. 2 is the backlight local structure enlarged diagram among Fig. 1;
Fig. 3 is the structural representation of light guide plate embodiment of the present invention;
Fig. 4 is the structural representation of the prism of layers of prisms among the light guide plate embodiment of the present invention;
Fig. 5 makes the process flow diagram of the method embodiment of light guide plate for the present invention;
Fig. 6 makes the structural representation of light guide plate coating photodiffusion material among the method embodiment of light guide plate for the present invention;
Fig. 7 makes for the present invention among the method embodiment of light guide plate at the structural representation that is coated with diffusion material upper surface coating light transmissive material.
Embodiment
Fig. 3 is the structural representation of light guide plate embodiment of the present invention, and light guide plate 10 of the present invention comprises the diffusion layer 8 of site 12, main body 11 and the coating of main body upper surface thereof and the layers of prisms 9 of diffusion layer upper surface coating.The diffusion layer 8 of described main body 11 upper surfaces coating is formed by photodiffusion material, and described photodiffusion material plays the effect of spreading light; Layers of prisms 9 is coated the photodiffusion material upper surface by light transmissive material and is formed through hot pressing, plays the effect of optically focused.The transmitance of light that forms the photodiffusion material of described diffusion layer 8 can be 1.4～2.0.The transmitance of light of making the light transmissive material of described layers of prisms 9 can be 1.5～2.5.
The prism structure of described layers of prisms 9 can be made up of boss, in the present embodiment prism structure vertical view as shown in Figure 4, layers of prisms 9 is made up of truncated rectangular pyramids, truncated rectangular pyramids is regularly arranged, layers of prisms 9 also can boss be regularly arranged forms by six terrace with edges etc., repeats no more here.Light guide plate has further increased the briliancy of main body 11 through diffusion layer 8 ejaculation light by having the prism structure for the boss shape.
In the foregoing description, light guide plate 10 is by diffusion layer 8 and layers of prisms 9, make light guide plate itself have the effect of diffusion light and optically focused, and need not in addition assembling diffusion sheet and prismatic lens on light guide plate, reduced the operation that this two-layer diaphragm is set in the backlight assembling process, improved packaging efficiency, greatly reduced the cost of backlight, also reduced because of assembling the product fraction defective that diffusion sheet and prismatic lens cause.And the thickness that is provided with the backlight of above-mentioned light guide plate 10 has significantly reduced, and has satisfied current low cost and further ultra-thin requirement to backlight.
Fig. 5 makes the process flow diagram of the method embodiment of light guide plate for the present invention, and the method for making light guide plate specifically comprises:
The technology mode of step 13, use hot pressing, make the surface formation truncated rectangular pyramids prism structure as shown in Figure 4 of light transmissive material, obtain layers of prisms 9, finish the manufacturing of light guide plate, obtain light guide plate 10 as shown in Figure 3, this light guide plate has the integral structure of light guide plate, diffusion layer, layers of prisms.
Said method embodiment is by coating photodiffusion material on light guide plate 1 main body 11 and be coated with the layers of prisms that forms through hot pressing on photodiffusion material, make light guide plate 1, diffusion layer 8 and layers of prisms become 9 to be one, realized integrating the light guide plate 10 of diffusion and enhanced shine, diffusion sheet 2 and prismatic lens 3 have been avoided on light guide plate 1, being provided with in addition in the backlight assembling process, simplify the setup the back light source structure of above-mentioned light guide plate 10 greatly, improved the packaging efficiency of backlight, reduced the product fraction defective that assembling diffusion sheet and prismatic lens cause, simultaneously guarantee high brightness again, reduced the cost of backlight.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.
Claims (6)
1, a kind of light guide plate comprises main body, it is characterized in that, described main body upper surface is coated with photodiffusion material, and the upper surface of described photodiffusion material is coated with the layers of prisms that light transmissive material forms through hot pressing mode.
2, light guide plate according to claim 1 is characterized in that, the transmitance of the light of described photodiffusion material can be 1.4～2.0.
3, light guide plate according to claim 1 is characterized in that, the transmitance of the light of described light transmissive material can be 1.5～2.5.
4, light guide plate according to claim 1 is characterized in that, described layers of prisms is made up of boss.
5, light guide plate according to claim 4 is characterized in that, described boss is a truncated rectangular pyramids.
6, a kind of method of making each described light guide plate among the claim 1-5 is characterized in that, comprising:
Main body upper surface coating photodiffusion material forms diffusion layer;
Upper surface coating light transmissive material at described photodiffusion material;
Mode with hot pressing makes described light transmissive material form layers of prisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101041094A CN101303431A (en) | 2008-04-15 | 2008-04-15 | Light guide plate and method for manufacturing light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101041094A CN101303431A (en) | 2008-04-15 | 2008-04-15 | Light guide plate and method for manufacturing light guide plate |
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| Publication Number | Publication Date |
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| CN101303431A true CN101303431A (en) | 2008-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008101041094A Pending CN101303431A (en) | 2008-04-15 | 2008-04-15 | Light guide plate and method for manufacturing light guide plate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508331A (en) * | 2011-11-10 | 2012-06-20 | 常州丰盛光电科技股份有限公司 | Light guide module for backlight unit and manufacturing equipment and method for light guide module |
| CN103697415A (en) * | 2013-12-19 | 2014-04-02 | 四川绵阳岷山实业集团有限公司 | Integral LED (Light Emitting Diode) backlight optical composition plate and manufacturing method thereof |
| CN103792614A (en) * | 2012-10-31 | 2014-05-14 | 仁宝电脑工业股份有限公司 | Composite light guide plate manufacturing method |
| CN104317102A (en) * | 2011-11-10 | 2015-01-28 | 常州丰盛光电科技股份有限公司 | Light guide module for backlight module and manufacturing device thereof |
| CN108051949A (en) * | 2017-12-28 | 2018-05-18 | 重庆市中光电显示技术有限公司 | A kind of sidelight type backlight module |
| CN111435204A (en) * | 2019-06-28 | 2020-07-21 | 宁波激智科技股份有限公司 | Quadrangular frustum pyramid brightness enhancement film and preparation method thereof |
| CN114399898A (en) * | 2022-01-12 | 2022-04-26 | 维沃移动通信有限公司 | Electronic device |
-
2008
- 2008-04-15 CN CNA2008101041094A patent/CN101303431A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508331A (en) * | 2011-11-10 | 2012-06-20 | 常州丰盛光电科技股份有限公司 | Light guide module for backlight unit and manufacturing equipment and method for light guide module |
| CN104317102A (en) * | 2011-11-10 | 2015-01-28 | 常州丰盛光电科技股份有限公司 | Light guide module for backlight module and manufacturing device thereof |
| CN102508331B (en) * | 2011-11-10 | 2015-09-09 | 常州丰盛光电科技股份有限公司 | A kind of backlight module light guide module and manufacturing equipment thereof and preparation method |
| CN104317102B (en) * | 2011-11-10 | 2017-02-01 | 常州丰盛光电科技股份有限公司 | Light guide module for backlight module and manufacturing device thereof |
| CN103792614A (en) * | 2012-10-31 | 2014-05-14 | 仁宝电脑工业股份有限公司 | Composite light guide plate manufacturing method |
| CN103697415A (en) * | 2013-12-19 | 2014-04-02 | 四川绵阳岷山实业集团有限公司 | Integral LED (Light Emitting Diode) backlight optical composition plate and manufacturing method thereof |
| CN108051949A (en) * | 2017-12-28 | 2018-05-18 | 重庆市中光电显示技术有限公司 | A kind of sidelight type backlight module |
| CN111435204A (en) * | 2019-06-28 | 2020-07-21 | 宁波激智科技股份有限公司 | Quadrangular frustum pyramid brightness enhancement film and preparation method thereof |
| CN114399898A (en) * | 2022-01-12 | 2022-04-26 | 维沃移动通信有限公司 | Electronic device |
| CN114399898B (en) * | 2022-01-12 | 2023-03-17 | 维沃移动通信有限公司 | Electronic device |
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Open date: 20081112 |