Patent ID: 8537309

Claim:
A polarizer plate comprising at least a protective layer A, a polarizer formed of polyvinyl alcohol, and a protective layer B in that order, the protective layer A being obtained by coextrusion and including at least layers a and b respectively including a thermoplastic resin as a main component, the layer a having a flexural modulus of 3 GPa to 4 GPa and the layer b being formed of at least one kind of resin selected from the group consisting of an alicyclic structure-containing polymer, a cellulose polymer, a polyester polymer, a polycarbonate polymer, a polysulfone polymer, a polyethersulfone polymer, a vinyl aromatic polymer, a polyolefin polymer, a polyvinyl alcohol polymer, a polyvinyl chloride polymer, and a poly(meth)acrylate polymer and having a flexural modulus of 2.1 GPa to 3.0 GPa and a thickness of 5 to 52 μm, wherein the flexural modulus of layer a is higher than the flexural modulus of layer b, and wherein a difference in flexural modulus between the layers a and b is 0.2 GPa to 1.2 GPa.