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Coating composition for laminating layer of diffusion and brightness enhancement composite film, diffusion and brightness enhancement composite film and preparation method thereof

A technology of coating composition and composite film, which is applied in the direction of coating, optics, optical components, etc., can solve problems such as delamination and crease, and achieve good anti-delamination and bending resistance, good bonding effect, The effect of improving bending resistance

Active Publication Date: 2019-04-05
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating composition provided by the invention can form a laminating layer between the top of the prism structure of the composite film and the base material of the diffusion film, has good bonding effect, and greatly improves the diffusion enhancement compounding effect while maintaining the optical properties. The ability of the film to resist delamination and bending improves the mechanical stability of the diffused and enhanced composite film, and solves the problem that the composite film is prone to delamination and creases during cutting and handling

Method used

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  • Coating composition for laminating layer of diffusion and brightness enhancement composite film, diffusion and brightness enhancement composite film and preparation method thereof
  • Coating composition for laminating layer of diffusion and brightness enhancement composite film, diffusion and brightness enhancement composite film and preparation method thereof

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preparation example Construction

[0065] The preparation method of the coating composition provided by the present invention: mix the acrylate oligomer, the urethane acrylate monomer, and the photoinitiator according to the proportion, and then add the diluent to adjust the viscosity to 11-13s, stir evenly, and filter Then is the coating composition that can be coated on the substrate.

[0066] Further, pay attention to shading during the preparation process.

[0067] Further, the viscosity of the coating composition is measured using a Tu-4 cup.

[0068] The coating composition provided by the present invention is used as the application method of the bonding layer of the diffusion and brightness enhancement composite film. A wire bar coater is used to uniformly coat the uniformly mixed coating composition on the blank substrate on the back of the diffusion layer at 100°C. Bake down for 3 minutes, then use the composite roller to compound the lower prism layer, and then perform UV curing under a UV curing lamp. The...

Embodiment 1

[0077] The present invention provides a coating composition for a bonding layer of a diffusing light-enhancing composite film and a diffusing light-enhancing composite film.

[0078] The coating composition includes 20% acrylate oligomer, 10% monomer, 1.5% photoinitiator, and 68.5% diluent. The acrylate oligomer is a tetrafunctional polyester acrylic resin; the monomer is a trifunctional alicyclic urethane acrylic resin, the glass transition temperature is 30°C, and the monomer and the acrylate oligomer are The weight ratio is 0.5:1; the photoinitiator is Irgacure 184, and the weight ratio to acrylic resin is 5:100; the diluent is methyl ethyl ketone. The solid content of the coating composition is 31.5%.

[0079] The diffusion layer includes: polyol copolymer, isocyanate trimer, polymethyl methacrylate particles. The polyol copolymer is polyethylene adipate-propylene glycol ester diol, polyethylene adipate-1,4-butanediol ester diol, and polyneopentyl adipate glycol-1 , 6-hexane...

Embodiment 2

[0083] The coating composition for the bonding layer of the diffusion and brightness enhancement composite film and the diffusion and brightness enhancement composite film provided in Example 1, the coating composition includes: 5% of acrylate oligomer, 3% of monomer, and photoinitiator 0.16%, diluent 91.84%. The acrylate oligomer is a six-member epoxy acrylic resin; the monomer is a six-member aromatic urethane acrylic resin, the glass transition temperature is 60°C, and the monomer is different from the acrylate oligomer. The weight ratio is 0.6:1; the photoinitiator is Irgacure 184, and the weight ratio to the acrylic resin is 2:100; the diluent is ethyl acetate. The solid content of the coating composition is 8.16%.

[0084] The diffusion layer includes: polyol copolymer, isocyanate trimer, polymethyl methacrylate particles. The polyol copolymer is a mixture of polyethylene adipate-propylene glycol ester diol and polyneopentyl adipate-1,6-hexanediol ester diol, and the weig...

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Abstract

The invention relates to the technical field of high-performance coating materials, in particular to a coating composition for a laminating layer of a diffusion and brightness enhancement composite film and the diffusion and brightness enhancement composite film and aims to solve the problem of proneness to layering and folding of existing diffusion and brightness enhancement composite films in acutting and transporting process. The coating composition is prepared from 5%-20% of an acrylate oligomer, 3%-10% of a monomer, 0.16-1.5% of a photoinitiator and 68.50%-91.84% of a diluting agent. Thecoating composition has a great adhesion effect between the top end of a prism structure and a base material, and resistance of the diffusion and brightness enhancement composite film to layering andbending is remarkably improved under the condition that optical performances are kept.

Description

Technical field [0001] The present invention relates to the technical field of high-performance coating materials, and in particular to a coating composition for a laminating layer of a diffusion and light-enhancing composite film, a diffusion and light-enhancing composite film and a preparation method thereof. Background technique [0002] Liquid crystal display (LCD) is currently the most common display technology. However, LCD is a non-luminous display device and requires the backlight module BLU (Back Light Unit) to provide a bright and uniform light source to achieve the display effect. The traditional backlight module is mainly assembled from four diaphragms: a lower diffusion film, a lower light-enhancing film, an upper light-enhancing film, and an upper diffusion film. Among them, the light-emitting surface of DIF (Diffuser Film) has a diffusion layer structure, and its light function is mainly to diffuse the incident light, act as atomizer, and improve the uniformi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/06C09D175/14C09D163/10C09D171/02C08J7/04G02B5/02C08L67/02
CPCC08J2367/02C08J2463/10C08J2467/06C08J2471/02C08J2475/14C08L2205/025C08L2205/03C09D163/10C09D167/06C09D171/02C09D175/14C08J7/0427G02B5/0231C08L75/14C08L67/06C08L71/02
Inventor 张彦叶群李刚余洋李培源唐海江
Owner NINGBO EXCITON TECH
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