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High-brightness and high-coverage composite optical film

An optical film, high-brightness technology, applied in the field of composite optical films, can solve the problems of not being able to protect the prism film, not being able to achieve a good uniform light effect, and easily scratching the diffusion layer, so that it is not easy to be scratched. Effect

Active Publication Date: 2021-01-29
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot achieve a uniform light effect when the haze is low; the coating liquid is coated on the back of the prism film, which cannot protect the prism film, and the coating liquid is coated with a diffusion layer that is easy to scratch damage or be scratched by other components

Method used

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  • High-brightness and high-coverage composite optical film

Examples

Experimental program
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Effect test

preparation example Construction

[0038] The preparation method of the diffusion particle coating:

[0039] The diffusion particle coating is coated on the transparent substrate, and the diffusion particle coating comprises 20-40 parts by weight of diffusion particles, 20-40 parts by weight of film formers, 30-50 parts by weight of organic solvent A, 1 - 2 parts by weight of additives; the refractive index of the film former is 1.48-1.50; the diffusion particles are methyltrimethoxysilane or ethyltrimethoxysilane. The refractive index of the diffusing particles is 1.41-1.47; the particle size of the diffusing particles is 1 μm-50 μm; the organic solvent A is one or any weight of butanone, cyclohexanone, ethyl acetate, butyl acetate Several combinations of ratios, the auxiliary agent includes a leveling agent and an antistatic agent, and the weight ratio of the leveling agent to the antistatic agent is 1:0.5-1. Add the film-forming substance, the organic solvent A, the diffusion particles and the auxiliary age...

Embodiment 1

[0045] First prepare the diffusion particle coating, 20 parts of diffusion particles (methyltrimethoxysilane, forward chemical industry), 30 parts of film formers (phenol acrylate, sendy chemical industry), 50 parts of organic solvent A (butanone), help (Auxiliary agent comprises leveling agent and antistatic agent, and its weight ratio is 1:0.5, and wherein leveling agent is KMT-5519 of Kemet Company, and antistatic agent is MK400 of DuPont Company) 1 part, will diffuse particle , film-forming material, organic solvent A, and additives are respectively added to a high-shear stirring ultrasonic machine, and prepared by high-shear stirring at 500r / min-900r / min and ultrasonic dispersion with a power of 400W-600W at the same time, and coated on a transparent substrate On the material, after drying and aging, it is ready for use.

[0046] Then prepare the resin coating, put 10 parts of acrylic resin (o-phenylphenoxyethyl acrylate, Teba Chemicals), 1 part of crosslinking agent (ali...

Embodiment 2

[0049] First prepare the diffusion particle coating, 25 parts of diffusion particles (methyltrimethoxysilane, forward chemical industry), 20 parts of film formers (phenol acrylate, sendy chemical industry), 45 parts of organic solvent (cyclohexane), help (Auxiliaries include leveling agent and antistatic agent, the weight ratio is 1:0.6, wherein the leveling agent is KMT-5519 of Kemet Company, and the antistatic agent is MK400 of DuPont Company) 1.2 parts, will spread Particles, film formers, organic solvents, and additives are respectively added to a high-shear stirring ultrasonic machine, and are prepared by high-shear stirring at 500r / min-900r / min and ultrasonic dispersion with a power of 400W-600W at the same time, and coated on a transparent substrate On the material, after drying and aging, it is ready for use.

[0050] Then prepare the resin coating, 20 parts of acrylic resin (diphenoxyfluorene diacrylate, Kaiyin Chemical Industry), 3 parts of crosslinking agent (alipha...

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Abstract

A high-brightness and high-coverage composite optical film comprises at least one diffusion film and at least one brightness enhancement film; the diffusion film and the brightness enhancement film are compounded together through an adhesive. The diffusion film comprises a transparent base material, a diffusion particle coating layer and a resin coating layer. The high-brightness and high-coveragecomposite optical film provided by the invention has excellent optical performance, the coverage effect of the composite optical film is improved, meanwhile, the brightness is excellent, the surfaceof the diffusion film can be relatively smooth by virtue of the resin coating layer, and when the diffusion film is in contact with other components, more scratches caused by a concave-convex structure of the diffusion film are avoided, and it can be guaranteed that the composite optical film is not prone to being scratched.

Description

technical field [0001] The invention relates to the technical field of backlight modules for LCDs, in particular to a high-brightness and high-covering composite optical film. Background technique [0002] A liquid crystal display (TFT-LCD) is mainly composed of a liquid crystal panel and a backlight module. Generally speaking, a backlight module consists of a light source, a reflective film, a light guide plate, and an optical module. A traditional optical module mainly includes two diffusion films and two brightness enhancement films, which are arranged in sequence from top to bottom as an upper diffusion film, an upper brightness enhancement film, a lower brightness enhancement film, and a lower diffusion film. The diffusion film can convert the point light source or line light source into a uniform surface light source, and the brightness enhancement film can concentrate the originally divergent light to the axial direction, thereby improving the front-view brightness o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02C08J7/06C08J7/04C09D4/02C09D163/10C09D7/63C08L69/00C08L67/02C08L33/12
CPCG02B5/0226G02B5/0268C08J7/065C08J7/042C09D4/00C09D163/10C09D7/63C08J2369/00C08J2367/02C08J2333/12C08J2463/10
Inventor 郑宇翔唐超军王增敏严志雄李彩翠黄永华孙晶晶
Owner HEFEI LUCKY SCI & TECH IND