POLARIZATION PLATE AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

A polarization plate that by the use of a specified transparent protective layer for polarizer, excels in transparency, mechanical strength and adhesion, exhibiting a little change of birefringence versus external stress, and that can exert satisfactory polarization potency even in high temperature high humidity conditions; and a relevant liquid crystal display device. The polarization plate comprises resin film (A) of alicyclic-structure-having resin superimposed on one major surface of polarizer, hard coat layer (B) superimposed on the surface of resin film (A), antireflection layer (C) superimposed on the surface of hard coat layer (B) and resin film (D) superimposed on the other major surface of the polarizer. The resin film (A) has a thickness of 5 to 200 µm, a water vapor permeability of 0.3 to 40 g/m<SUP>2</SUP>·24 hr, a photoelastic coefficient of = 12.0×10<SUP>-12</SUP>/Pa, a die line maximum depth or maximum height of = 50 nm and a die line minimum width of = 500 nm. The resin film (D) has a thickness of 5 to 200 µm and a water vapor permeability of 50 to 1500 g/m<SUP>2</SUP>·24 hr.