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1. (WO2018004172) POLARIZATION PLATE AND LIQUID CRYSTAL DISPLAY DEVICE COMPRISING SAME

Pub. No.:    WO/2018/004172    International Application No.:    PCT/KR2017/006444
Publication Date: Fri Jan 05 00:59:59 CET 2018 International Filing Date: Wed Jun 21 01:59:59 CEST 2017
IPC: G02B 5/30
G02B 1/14
C09D 133/10
C09D 133/08
G02F 1/1335
Applicants: DONGWOO FINE-CHEM CO., LTD.
동우 화인켐 주식회사
Inventors: JUNG, Kyoungmoon
정경문
LEE, Won Bum
이원범
HUH, Yoonho
허윤호
Title: POLARIZATION PLATE AND LIQUID CRYSTAL DISPLAY DEVICE COMPRISING SAME
Abstract:
The present invention relates to a polarization plate and a liquid crystal display device comprising the same, the polarization plate comprising: a polarizer; and a protective coating layer formed on at least one surface of the polarizer, wherein the protective coating layer is formed of a composition for forming a protective coating layer, the composition containing: an acrylic copolymer having a Tg of 90°C or greater and a weight average molecular weight of 50,000-1,500,000; and a cross-linking agent, the acrylic copolymer containing 50-99.5 parts by weight of at least one high-Tg monomer selected from (meth)acrylates and vinyl monomers, which have a Tg of 100°C or higher, 0-45 parts by weight of at least one low-Tg monomer selected from (meth)acrylates and vinyl monomers, which have a Tg of equal to or higher than 50°C and lower than 100°C, and 0.5-20 parts by weight of a cross-linkable monomer having a substituent selected from a hydroxyl group, a carboxyl group, and an amine group. The polarization plate according to the present invention can provide a polarizer protective effect through excellent durability and adhesive strength, and can be thinner and lighter without using an adhesive layer.