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A kind of anti-scratch optical diffusion film and preparation method thereof

An optical diffusion and anti-scratch technology, used in optics, optical components, coatings, etc., can solve the problem of thin optical diffusion films being easily scratched, and achieve good transmittance and haze coordination, transparency and Good scratch resistance and well-coordinated results

Active Publication Date: 2015-10-14
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thin optical diffusers are particularly prone to scratches during manufacturing, die-cutting and mounting

Method used

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  • A kind of anti-scratch optical diffusion film and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of optical diffusion layer coating solution:

[0039] Butanone 25 parts by mass

[0040] 25 parts by mass of toluene

[0041] 5 parts by mass of propylene glycol monomethyl ether

[0042] Polymethyl methacrylate microbeads (MBX-30, product of Sekisui Chemical Co., Ltd., average particle diameter of 30 μm) 2 parts by mass

[0043] Polymethyl methacrylate microbeads (MBX-10, product of Sekisui Chemical Co., Ltd., average particle size of 10 μm) 10 parts by mass

[0044] Polymethyl methacrylate microbeads (MB20X-8, product of Sekisui Chemical Co., Ltd., average particle size 8 μm) 8 parts by mass

[0045] Polyacrylate polyol (WDU-938, product of DIC company, solid content 50%, hydroxyl value 50mgKOH / g) 15 parts by mass

[0046] Polyurethane acrylate (product of Sartomer, USA, brand name CN9006) 5 parts by mass

[0047] 1 part by mass of dipentaerythritol hexaacrylate DPHA

[0048] HDI trimer (N3600, product of Bayer, NCO content 23%) 3 parts by mass

[0...

Embodiment 2

[0064] Preparation of Optical Diffusion Layer Coating Solution ：

[0065] Butanone 25 parts by mass

[0066] 25 parts by mass of toluene

[0067] 5 parts by mass of propylene glycol monomethyl ether

[0068] Polymethyl methacrylate microbeads (MBX-30, product of Sekisui Chemical Co., Ltd., average particle diameter of 30 μm) 2 parts by mass

[0069] Polymethyl methacrylate microbeads (MBX-10, product of Sekisui Chemical Co., Ltd., average particle size of 10 μm) 8 parts by mass

[0070] Polymethyl methacrylate microbeads (MB20X-8, product of Sekisui Chemical Co., Ltd., average particle size 8 μm) 10 parts by mass

[0071] Polyacrylate polyol (WDU-938, DIC company product, solid content 50%, hydroxyl value 50mgKOH / g) 10 parts by mass

[0072] Urethane acrylate (product of Sartomer, USA, brand name CN9006) 8.4 parts by mass

[0073] 3.6 parts by mass of dipentaerythritol hexaacrylate DPHA

[0074] HDI trimer (N3600, Bayer product, NCO content 23%) 2 parts by mass

[0075] ...

Embodiment 3

[0082] Preparation of optical diffusion layer coating solution:

[0083] Butanone 25 parts by mass

[0084] 25 parts by mass of toluene

[0085] 5 parts by mass of propylene glycol monomethyl ether

[0086] Polymethyl methacrylate microbeads (MBX-30, product of Sekisui Chemical Co., Ltd., average particle size 30 μm) 4 parts by mass

[0087] Polymethyl methacrylate microbeads (MBX-10, product of Sekisui Chemical Co., Ltd., average particle size of 10 μm) 8 parts by mass

[0088] Polymethyl methacrylate microbeads (MB20X-8, product of Sekisui Chemical Co., Ltd., average particle size 8 μm) 8 parts by mass

[0089] Polyacrylate polyol (WDU-938, DIC company product, solid content 50%, hydroxyl value 50mgKOH / g) 6 parts by mass

[0090] Polyurethane acrylate (product of Sartomer, USA, brand name CN9006) 12 parts by mass

[0091] 4.8 parts by mass of dipentaerythritol hexaacrylate DPHA

[0092] HDI trimer (N3600, product of Bayer, NCO content 23%) 1.2 parts by mass

[0093] P...

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Abstract

The invention provides a scratch-proof optics diffusion film and a preparation method thereof. The scratch-proof optics diffusion film comprises a transparent sheet-shaped optics substrate, an optics diffusion layer and a diffusion bonding-proof layer; the diffusion layer and the diffusion bonding-proof layer are formed on two sides of the transparent sheet-shaped optics substrate; the optics diffusion layer is formed by coating and fixing coating liquid on one surface of the transparent sheet-shaped optics substrate, and a film is formed through drying and solidifying, wherein the coating liquid is formed by mixing binding agents, diffusion granules, cross-linking agents, dispersing agents and diluents; and the diffusion bonding-proof layer is formed by coating and fixing coating liquid on the other surface of the transparent sheet-shaped optics substrate, and a film is formed through drying and solidifying, wherein the coating liquid is formed by mixing the bonding agents, the diffusion granules, antistatic agents, the cross-linking agents and the diluents. According to the scratch-proof optics diffusion film and the preparation method thereof, diffusion granules different in diameter are used, a synergistic effect of diffusion granules identical in diameter is utilized, diluent different in volatility is used, proper film-coating and drying processes are adopted, so that coordination of transmittance and haze of the scratch-proof optics diffusion film is increased, and obtained coating films are good in coordination of rigidity, transparency and scratch-proof performance, and have adequate optics diffusivity and good coordination of transmittance of haze.

Description

technical field [0001] The invention relates to an optical diffusion film used in a backlight module of a flat panel display and a preparation method thereof. Background technique [0002] In recent years, various new flat panel display (FPD, such as LCD, PDP, etc.) technologies and products have developed rapidly. The flat panel display industry has become an important part of the information industry, and the FPD industry and market are growing rapidly worldwide. Since the FPD itself cannot emit light, it needs a backlight unit (BLU) to provide sufficient brightness and a uniform light source so that it can display images normally. The backlight unit has become a key technical component of the FPD. The backlight module is mainly composed of diffusion film / plate, brightness enhancement film (BEF / DBEF), light guide plate, reflector, cold cathode tube (or LED point light source), reflection light and outer frame, among which the optical module and light guide plate are The m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02B1/14C09D133/14C09D133/12C09D175/14C09D7/12
Inventor 邓康清杨柱夏萍刘振宇常征张宏元袁东芝龚露露
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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