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Anti-reflection film, polarizing plate and display device

一种抗反射膜、椭圆偏光的技术，应用在偏光板和显示装置,抗反射膜领域，能够解决难降低低折射层反射率耐刮擦性、特性改善程度不令人满意、低折射层的表面防污性劣化等问题，达到增加屏幕清晰度、低反射率、高防污性的效果

Active Publication Date: 2022-02-08
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when nano-sized particles are used, it is difficult to improve scratch resistance while reducing the reflectance of the low-refractive layer, and due to the nano-sized particles, the antifouling property of the surface of the low-refractive layer is significantly deteriorated
[0009] Therefore, in order to reduce the absolute reflection amount of incident light from the outside and improve the antifouling property and scratch resistance of the surface, many studies are being conducted, but the degree of improvement of the obtained characteristics is not satisfactory.

Method used

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  • Anti-reflection film, polarizing plate and display device
  • Anti-reflection film, polarizing plate and display device
  • Anti-reflection film, polarizing plate and display device

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0150] Preparation Example 1: Preparation of Hard Coating Film (HD1)

[0151] A salt-type antistatic hard coating solution (solid content 50% by weight, product name: LJD-1000) manufactured by KYOEISHA Co., Ltd. was coated on a triacetyl cellulose (TAC) film with a #10 Mayer rod, and dried at 90° C. 1 minute, then pass 150mJ / cm 2 UV irradiation to prepare a hard coat film with a thickness of about 5 μm.

preparation example 2

[0152] Preparation Example 2: Preparation of Hard Coating Film (HD2)

[0153] 30g pentaerythritol triacrylate, 2.5g high molecular weight copolymer (BEAMSET 371, Arakawa Co., epoxy acrylate, molecular weight 40,000), 20g methyl ethyl ketone and 0.5g leveling agent (Tego Wet 270) were uniformly mixed, Then 2 g of an acryloyl-styrene copolymer (volume average particle diameter: 2 μm, manufacturing company: Sekisui Plastics) was added as fine particles having a refractive index of 1.525 to prepare a hard coating composition.

[0154] The obtained hard coating composition was coated on a PET film (thickness 80 μm, retardation 10,000 nm) with a #10 Mayer rod, and dried at 90° C. for 1 minute. Pass 150mJ / cm 2 The dried product was irradiated with UV to prepare a hard coat layer with a thickness of 5 μm.

Embodiment 1 to 6

[0155]

[0156] (1) Preparation of a photocurable coating composition for forming a low-refractive layer

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Abstract

The present invention relates to an antireflective film comprising: a light-transmitting substrate; a hard coat layer; and a low-refractive layer, wherein the low-refractive layer comprises: a first region comprising a binder resin and a high-refractive inorganic nano particle; and a second region, the second region contains a binder resin and low-refractive inorganic nanoparticles, and for each of the first region and the second region, when the polarization ellipticity measured by ellipsometry When fitting to the Cauchy model, the predetermined requirements are met.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2018-0030717 filed with the Korean Intellectual Property Office on March 16, 2018, the disclosure of which is hereby incorporated by reference in its entirety. [0003] The present invention relates to an antireflection film, a polarizing plate and a display device. Background technique [0004] Generally, in flat panel display devices such as PDPs, LCDs, etc., an anti-reflection film is installed to minimize reflection of incident light from the outside. [0005] Methods for minimizing reflection of light include: a method of dispersing a filler such as inorganic fine particles in a resin, coating it on a base film, and forming unevenness (anti-glare: AG coating); A method of forming a plurality of layers having different refractive indices on a base film to utilize light interference (anti-reflection; AR coating); a method of u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/20B32B27/14B32B5/16B32B7/023B32B27/18B32B27/36
CPCB32B5/16B32B7/02B32B27/14B32B27/18B32B27/36G02B5/305G02B1/14G02B1/115G02B5/20B32B2307/21B32B2307/418B32B2264/102B32B2457/20B32B7/023G02B1/08G02B5/3033C09K2323/03G02F1/133541G02B1/11
Inventor 边真锡宋仁永金东炫徐光锡张影来
Owner LG CHEM LTD