Patent ID: 7622168

Claim:
A polarizing plate with pressure-sensitive adhesive type optical compensation layer used for liquid crystal display, comprising a polarizing plate with optical compensation layer ( 1 ) and an optical compensation film ( 2 ) bonded to each other via a pressure-sensitive adhesive layer A, and a pressure-sensitive adhesive layer B at the opposite side of the optical compensation film ( 2 ) to the pressure-sensitive adhesive layer A, wherein both the pressure-sensitive adhesive layer A and the pressure-sensitive adhesive layer B have a tensile elasticity of 0.1 MPa or less at 23° C., the pressure-sensitive adhesive layer A and the pressure-sensitive adhesive layer B are formed respectively from a crosslinked product of a composition containing an acrylic polymer having a weight-average molecular weight of 500,000 to 2,500,000 (P 1 ), an acrylic polymer having a weight-average molecular weight of 100,000 or less (P 2 ), and a multifunctional compound, and the acrylic polymer (P 1 ) is a copolymer containing an alkyl (meth)acrylate monomer unit and 0.1 to 12 parts by weight of a copolymerizable monomer unit, relative to 100 parts by weight of the alkyl (meth)acrylate, and the acrylic polymer (P 2 ) consists of alkyl (meth)acrylate monomer units, wherein the polarizing plate with optical compensation layer ( 1 ) is a laminate of a polarizing plate and an optical compensation layer, wherein the polarizing plate contains a polarizer and a transparent protective film on only one side of the polarizer, and the optical compensation layer is a liquid crystal alignment layer provided on a triacetyl cellulose film as substrate without an intervening adhesive layer in between.