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A kind of base film for composite brightening film

A technology of brightness-enhancing film and base film, which is applied in optics, instruments, nonlinear optics, etc., and can solve the problems that the protective film cannot be covered, the adhesion is not strong, and the protective film is prone to residual glue.

Active Publication Date: 2018-06-08
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are particles protruding on the surface of the matte layer, and the general protective film cannot be covered or adhered firmly, and the protective film with high viscosity is prone to residual glue when it is peeled off after post-processing.

Method used

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  • A kind of base film for composite brightening film
  • A kind of base film for composite brightening film
  • A kind of base film for composite brightening film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 40.0 g of hexafunctional aliphatic urethane acrylate prepolymer (Changxing Chemical Materials Co., Ltd., trade name: 5105A, functionality: 6, viscosity: 70000-90000 cps), 29 g of trifunctional active monomer pentaerythritol triacrylate Body (manufactured by Changxing Chemical (Zhuhai) Industrial Co., Ltd., trade name: EM235), 5.0g photoinitiator (manufactured by Tianjin Tianjiao Chemical Co., Ltd., trade name: 184), 3.0g leveling agent (among which acrylic leveling agent 1.5g of additive, BYK-350; 1.5g of silicone leveling agent, BYK-307), 3.0g of dispersing aid BYK-111, 1.0g of diffusion particles and 20g of toluene in a stirring pot In the process, stir at a speed of 1500r / min for 5h, then stir at a speed of 100r / min for 5h, and finally stir evenly to obtain a coating material. The diffusion particles used here are organic particles of polystyrene (PS), with an average particle size D2 of 1.5 μm. The number of particles with a particle size of 1 μm to 2 μm accounted ...

Embodiment 2

[0045] Mix 5.0g of hexafunctional aliphatic urethane acrylate prepolymer (Changxing Chemical Materials Co., Ltd., trade name: 6195-100, functionality: 10, viscosity: 75000-95000cps), 30g of 2-hydroxyethyl methacrylate Phosphate ester (manufactured by Changxing Chemical (Zhuhai) Industrial Co., Ltd., trade name: EM39), 2.3g of photoinitiator (manufactured by Tianjin Tianjiao Chemical Co., Ltd., trade name: 1173), 2.0g of leveling agent (among which acrylic flow Leveling agent 1.33g, BYK-352; silicone leveling agent 0.67g, BYK-333), 0.65g dispersing aid (BYK-108), 0.05g diffusion particles and 60g The ethanol was placed in a stirring pot, stirred at a speed of 1500r / min for 5h, and then stirred at a speed of 100r / min for 5h, and finally stirred evenly to obtain a coating material. The diffusion particles used are organic particles of polymethyl acrylate (PMMA), with an average particle size D2 of 9 μm. The particle size range of the particles is: the number of particles with a p...

Embodiment 3

[0048] 35.0g of hexafunctional aliphatic urethane acrylate prepolymer (Changxing Chemical Materials Co., Ltd., trade name: 6196-100, functionality: 15, viscosity: 200000-300000cps), 10g of hydroxyethyl methacrylate monomer ( Nippon Shokubai, HEMA), 4g photoinitiator (manufactured by Tianjin Tianjiao Chemical Co., Ltd., trade name: TPO), 2.5g leveling agent (including 2g acrylic leveling agent, BYK-354 of BYK; silicone fluid 0.5g leveling agent, BYK-337), 2.5g dispersion aid (BYK-2000), 0.5g diffusion particles and 45.5g ethyl acetate were placed in a stirring pot at a speed of 1500r / min Stir for 5 hours, then stir at a speed of 100 r / min for 5 hours, and finally stir evenly to obtain a coating material. The diffusion particles used are organic particles of polybutylacrylate (PBMA), with an average particle size D2 of 3 μm, and the particle size range is: the number of particles with a particle size of 2.8 μm to 3.2 μm accounts for 91%, and the particle size is The number of p...

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Abstract

The invention discloses a basal membrane of a composite brightness enhancement film. The basal membrane comprises a support body and an antistick protection layer coating the surface of the support body, wherein the antistick protection layer is formed by solidifying a coating liquid composed of an ultraviolet light solidification resin and diffusion particles under the condition of ultraviolet light, and the haze scope ranges from 40% to 90%. The coating liquid of the antistick protection layer is prepared by the following components in parts by weight: 5 to 40 parts of a high-functionality polyurethaneacrylate prepolymer, 10 to 40 parts of an activated monomer, 1 to 5 parts of a photoinitiator, 0.5 to 3 parts of a levelling agent, 0.5 to 3 parts of a dispersing auxiliary and 20 to 60 parts of an organic solvent. According to the composite brightness enhancement film provided by the invention, when a protective membrane is laid for the brightness enhancement film, the protective membrane can be smoothly attached, and the problem of leftovers of residual gum is eliminated; and besides, the antistick protection layer has an atomization diffusion effect and can be applied to the basal membrane of the composite brightness enhancement film.

Description

technical field [0001] The invention relates to the field of brightness-enhancing films for backlight modules, in particular to a base film for composite brightness-enhancing films. Background technique [0002] A liquid crystal display (TFT-LCD) is mainly composed of a liquid crystal panel and a backlight module. Generally speaking, the backlight module is composed of a light source, a reflective film, a light guide plate, and an optical module, such as figure 1 As shown, the traditional optical module mainly includes two diffusion sheets and two prism sheets, 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 sheet. 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 t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/14G02F1/1335
CPCG02F1/133504G02F1/133507
Inventor 李恒刘玉磊刘林王辉王旭亮
Owner HEFEI LUCKY SCI & TECH IND
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