CN203259677U - Compound type brightening diffusion film - Google Patents
Compound type brightening diffusion film Download PDFInfo
- Publication number
- CN203259677U CN203259677U CN2012207372177U CN201220737217U CN203259677U CN 203259677 U CN203259677 U CN 203259677U CN 2012207372177 U CN2012207372177 U CN 2012207372177U CN 201220737217 U CN201220737217 U CN 201220737217U CN 203259677 U CN203259677 U CN 203259677U
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- diffusion film
- film
- triangular prism
- brightening
- brightness enhancement
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Abstract
Provided is a compound type brightening diffusion film. The film is provided with a brightening layer on one surface of a transparent base material, and a back layer on the other surface of the transparent base material. The brightening layer contains triangular prism structures and photodiffusion particles distributed randomly, and top angles of the triangular prism structures are in an arc shape. The back layer contains photodiffusion particle pits which are distributed randomly. The pits are distributed on a surface of the back layer. The film is simple in structure, reduces the number of optical lenses a backlight module uses, simplifies assembling process, reduces cost, and ensures scratching resistance effect. Integration of the brightening effect and the covering effect satisfies requirements of a high refined LCD.
Description
Technical field
The utility model relates to a kind of optical thin film, particularly a kind of compound blast diffusion film with blast and diffusion function.
Background technology
Backlight module is one of key component of liquid crystal indicator, because liquid crystal itself is not luminous, the critical function of backlight module namely uses for display panels at the uniform area source of supply.
In the tradition LCD backlight source module mainly by light source, light guide plate, be disposed with lower diffusion barrier on the light guide plate exiting surface, vertical brightness enhancement film, horizontal brightness enhancement film, upper diffusion barrier, light passes through the even light action of diffusion barrier and the optically focused effect of brightness enhancement film by the light that this light guide plate exiting surface sends, reach luminous energy and be evenly distributed, the optical effect of light-ray condensing.But the blooming piece that the backlight module of this structure uses is more, and assembly technology is complicated, and cost is higher.The part backlight adopts lower diffusion barrier in order to save cost, brightness enhancement film, and upper diffusion barrier, though reduced blooming piece, the light source utilization ratio reduces, so that product brightness reduction, and the backlight uniformity coefficient also reduces.In order to address the above problem, in the prior art, it is 201120128708.7 Chinese patent such as application number, composite membrane with blast and diffusion function is disclosed, its objective is in order to guarantee that when reducing the blooming piece use amount product optical quality can not reduce, but, the disclosed this composite membrane of prior art, generally adopt on two surfaces of base material diffusion layer and brightness enhancement layer are set respectively, there is following defective in it: the rib peak at the prism top of a. brightness enhancement layer is very sharp-pointed, so that the anti-scratch poor effect of product brightness enhancement layer scratches panel easily; B. the diffusion particle of diffusion layer or other structures scratch light guide plate easily.
The utility model content
Technical problem to be solved in the utility model is the weak point that exists for prior art, and a kind of compound blast diffusion film is provided.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of compound blast diffusion film, it is provided with brightness enhancement layer in the one side of transparent base, another side at transparent base is provided with backing layer, brightness enhancement layer contains the light diffusion particle that drift angle is circular-arc triangular prism structure and stochastic distribution, the light diffusion particle and the pit that contain stochastic distribution in the backing layer, pit distribution is on the backing layer surface.
In the above-mentioned compound blast diffusion film, the area sum of described pit is 2:100～99:100 with the ratio of the area of described backing layer.
In the above-mentioned compound blast diffusion film, the biggest size of element of described pit is at 0.01 μ m～80 μ m.
In the above-mentioned compound blast diffusion film, the circular arc radian of the drift angle of described triangular prism structure is 30 °～60 °, and the circular arc radius-of-curvature is 5～8 μ m.
In the above-mentioned compound blast diffusion film, distance is 45～50 μ m between the described triangular prism structure, and the height of prism structure is 18～20 μ m.
In the above-mentioned compound blast diffusion film, described backing layer is solidify to form by light diffusion particle, melmac or acryl resin.
Compared with prior art, the utlity model has following advantage:
1. by contain the brightness enhancement layer of diffusion particle in the one side setting of base material, make the light source of backlight module only by single composite membrane, can make source light homogenising and luminance raising, reduced the quantity of the blooming piece of backlight module use, simplify assembly technology, reduced cost.
2. be circular-arc triangular prism structure and solved the scuffing problem that traditional brightening diffusion film causes liquid crystal panel by be provided with drift angle in brightness enhancement layer.
3. stochastic distribution light diffusion particle has played the effect of light diffusion layer in the backing layer, and by the pit on the tegillum surface, has solved the conventional diffusion film to the scuffing problem that light guide plate causes, and is equivalent to simultaneously little concavees lens, can further spread light.The composite membrane that the utility model provides has guaranteed the unification of anti scuffing effect, brightening effect and covering effect, has satisfied the requirement of the liquid crystal display of high-precision refinement.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Each list of reference numerals is among the figure: 1, transparent base; 2, brightness enhancement layer; 3, backing layer; 4, prism structure; 5, light diffusion particle; 6, pit.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
With reference to Fig. 1, the utility model comprises transparent PET basic unit 1, is provided with brightness enhancement layer 2 on the upper strata of transparent PET basic unit 1, and brightness enhancement layer is provided with drift angle and is circular-arc triangular prism structure 4, the circular arc radian of drift angle is controlled at 30 °～60 °, and the circular arc radius-of-curvature is 5～8 μ m; Distance control is again between 45～50 μ m between the triangular prism structure, the height of prism structure is controlled between 18～20 μ m, plays on the one hand the effect of blast, prevents that simultaneously the brightness enhancement layer counter plate from causing scuffing, stochastic distribution light diffusion particle 5 in the brightness enhancement layer, plays the effect of light diffusion.Lower floor in transparent PET basic unit 1 is provided with backing layer 3, is provided with light diffusion particle 5 in the backing layer, plays the effect of light diffusion, and the pit 6 on backing layer surface prevents from scratching light guide plate.
The light diffusion particle of brightness enhancement layer and backing layer can use the PMMA particle, also can use silica dioxide granule or siloxane particles.
Backing layer in the utility model and brightness enhancement layer are made, and can adopt known cylinder impression (roller imprint) or rice transfer printing (nanoimprinting lithography) technology how, but be not limited to this.
When using composite membrane of the present utility model, only need its exiting surface that is arranged on light guide plate is got final product, backing layer is contacted with the exiting surface of light guide plate; Lower floor's diffusion barrier and the brightness enhancement film of the alternative traditional backlight module of compound loose film of the present utility model.
Claims (5)
1. a compound blast diffusion film is characterized in that it is provided with brightness enhancement layer in the one side of transparent base, another side at transparent base is provided with backing layer, brightness enhancement layer contains drift angle and is circular-arc triangular prism structure, contains the pit of stochastic distribution in the backing layer, and pit distribution is on the backing layer surface.
2. compound blast diffusion film according to claim 1 is characterized in that, the area sum of described pit is 2:100～99:100 with the ratio of the area of described backing layer.
3. compound blast diffusion film according to claim 2 is characterized in that, the biggest size of element of described pit is at 0.01 μ m～80 μ m.
4. compound blast diffusion film according to claim 3 is characterized in that, the circular arc radian of the drift angle of described triangular prism structure is 30 °～60 °, and the circular arc radius-of-curvature is 5～8 μ m.
5. compound blast diffusion film according to claim 4 is characterized in that, distance is 45～50 μ m between the described triangular prism structure, and the height of prism structure is 18～20 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207372177U CN203259677U (en) | 2012-12-28 | 2012-12-28 | Compound type brightening diffusion film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207372177U CN203259677U (en) | 2012-12-28 | 2012-12-28 | Compound type brightening diffusion film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203259677U true CN203259677U (en) | 2013-10-30 |
Family
ID=49472228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207372177U Expired - Lifetime CN203259677U (en) | 2012-12-28 | 2012-12-28 | Compound type brightening diffusion film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203259677U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459843B (en) * | 2014-12-16 | 2016-11-16 | 京东方科技集团股份有限公司 | Diffusion sheet and preparation method thereof, backlight module |
| CN106886067A (en) * | 2015-12-15 | 2017-06-23 | 宁波长阳科技股份有限公司 | A kind of composite brightening film and preparation method thereof |
| CN106908873A (en) * | 2017-04-24 | 2017-06-30 | 宁波东旭成新材料科技有限公司 | A kind of preparation method of haze high transmittance diffusion barrier |
| WO2022116299A1 (en) * | 2020-12-03 | 2022-06-09 | 惠州市华星光电技术有限公司 | Liquid crystal display panel and method for preparing same |
-
2012
- 2012-12-28 CN CN2012207372177U patent/CN203259677U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459843B (en) * | 2014-12-16 | 2016-11-16 | 京东方科技集团股份有限公司 | Diffusion sheet and preparation method thereof, backlight module |
| US10317616B2 (en) | 2014-12-16 | 2019-06-11 | Boe Technology Group Co., Ltd. | Diffusion plate and manufacturing method thereof, backlight module |
| CN106886067A (en) * | 2015-12-15 | 2017-06-23 | 宁波长阳科技股份有限公司 | A kind of composite brightening film and preparation method thereof |
| CN106908873A (en) * | 2017-04-24 | 2017-06-30 | 宁波东旭成新材料科技有限公司 | A kind of preparation method of haze high transmittance diffusion barrier |
| WO2022116299A1 (en) * | 2020-12-03 | 2022-06-09 | 惠州市华星光电技术有限公司 | Liquid crystal display panel and method for preparing same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |