Patent ID: 8551612
Filing Date: 2013-10-08
Classification: G02B,G02F,Y10T

Abstract:
1. A polarizing plate, comprising: a polyvinyl alcohol-based polarizer; and transparent protective films provided on both sides of the polarizer, wherein the transparent protective film on one side of the polarizer, with a first adhesive layer interposed therebetween, comprises a lactone ring structure-containing (meth)acrylic resin and has an in-plane retardation of less than 40 nm and a thickness direction retardation of less than 80 nm, and the transparent protective film on the other side of the polarizer, with a second adhesive layer interposed therebetween, is a retardation plate that comprises a cellulose ester and satisfies the relation: nx>ny>nz, wherein nx is a refractive index in an X-axis direction where the in-plane refractive index is maximum, ny is a refractive index in a Y-axis direction perpendicular to the X-axis, and nz is a refractive index in a Z-axis direction corresponding to the thickness direction, wherein the first adhesive layer comprises a first adhesive, wherein at least the second adhesive layer on the retardation plate side is formed from a second adhesive comprising a resin solution, wherein the resin solution comprises a polyvinyl alcohol-based resin, a crosslinking agent and a colloidal metal compound with an average particle size of 1 nm to 100 nm, wherein 200 parts by weight or less of the colloidal metal compound is added to 100 parts by weight of the polyvinyl alcohol-based resin, wherein the first adhesive and the second adhesive may have the same composition or different compositions.