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Basal membrane of composite brightness enhancement film

A technology of brightness enhancement film and base film, applied in optics, instruments, nonlinear optics, etc., can solve the problems of the protective film not being covered, the protective film being prone to residual glue, and poor adhesion.

Active Publication Date: 2016-02-24
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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  • Basal membrane of composite brightness enhancement film
  • Basal membrane of composite brightness enhancement film
  • Basal membrane of composite brightness enhancement film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 40.0g hexafunctional aliphatic urethane acrylate prepolymer (Changxing Chemical Materials Co., Ltd., trade name: 5105A, functionality: 6, viscosity: 70000-90000cps), 29g trifunctional active monomer pentaerythritol triacrylate monomer (manufactured by Changxing Chemical (Zhuhai) Industrial Co., Ltd., trade name: EM235), 5.0g of photoinitiator (manufactured by Tianjin Tianjiao Chemical Co., Ltd., trade name: 184), 3.0g of leveling agent (including acrylic leveling agent 1.5g, 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 , stirred at a speed of 1500r / min for 5h, then stirred at a speed of 100r / min for 5h, and finally stirred 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 for 95%, and the nu...

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 phosphoric acid 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 (including acrylic leveling agent) Agent 1.33g, BYK-352; Silicone leveling agent 0.67g, BYK-333), 0.65g dispersing aid (BYK-108), 0.05g diffusion particles and 60g ethanol Place in a stirring pot, 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 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 particle size of ...

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 Applications(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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