Patent ID: 9321942
Filing Date: 2016-04-26
CPC Classification: C08G,C08L,C09D,C09J,G02B,Y10T

Claim Text:
1. A pressure-sensitive adhesive attached optical film, comprising: an optical film, wherein the optical film is a polarizing plate, a retardation plate, an optical compensation film, a brightness enhancement film, or a laminate thereof, and a first pressure-sensitive adhesive layer placed directly on at least one side of the optical film, wherein the first pressure-sensitive adhesive layer comprises an optical pressure-sensitive adhesive, wherein the optical pressure-sensitive adhesive comprises an acrylic copolymer comprising an alkyl (meth)acrylate (a1), N-(2-hydroxyethyl)(meth)acrylamide (a2), and a monomer (a3) other than the components (a1) and (a2), as a monomer unit; and a crosslinking agent, wherein the crosslinking agent is an isocyanate compound, wherein a content of the N-(2-hydroxyethyl)(meth)acrylamide (a2) is 0.01 to 5 parts by weight based on 100 parts by weight of the alkyl (meth)acrylate (a1), and the acrylic copolymer has a weight average molecular weight of 300,000 to 2,500,000, wherein the alkyl (meth)acrylate (a1) comprises n-butyl acrylate or 2-ethylhexyl acrylate, wherein the monomer (a3) comprises a carboxyl group-containing monomer, and wherein a content of the monomer (a3) is 50 parts by weight or less based on 100 parts by weight of the alkyl (meth)acrylate (a1).