Patent ID: 7507426
Filing Date: 2009-03-24
Classification: C09K,G02B,G02F

Abstract:
1. A polarizing plate comprising: a) a polarizing film; and b) a protection layer of an unstretched transparent film comprising a cyclic olefin-based addition polymer, wherein the cyclic olefin-based addition polymer is a homopolymer of the compound represented by the following Chemical Formula 1, or a copolymer of two or more kinds of the compounds represented by the following Chemical Formula 1; and the transparent film has retardation value (R wherein n n d is a thickness of the film, and wherein the transparent film is an optically anisotropic film having a refractive index satisfying n wherein m is an integer of 0 to 4, at least one of R the non-polar functional group is selected from the group consisting of a hydrogen; halogen; straight or branched alkyl, alkenyl or vinyl having 1 to 20 carbon atoms; cycloalkyl having 4 to 12 carbon atoms, substituted or unsubstituted with hydrocarbon; aryl having 6 to 40 carbon atoms, substituted or unsubstituted with hydrocarbon; aralkyl having 7 to 15 carbon atoms, substituted or unsubstituted with hydrocarbon; or alkynyl having 3 to 20 carbon atoms, the polar functional group is selected from the group consisting of linear or branched haloalkyl, haloalkenyl or halovinyl having 1 to 20 carbon atoms; halocycloalkyl having 4 to 12 carbon atoms, substituted or unsubstituted with hydrocarbon; haloaryl having 6 to 40 carbon atoms, substituted or unsubstituted with hydrocarbon; haloaralkyl having 7 to 15 carbon atoms, substituted or unsubstituted with hydrocarbon; haloalkynyl having 3 to 20 carbon atoms; and non-hydrocarbonaceous polar group selected from the group consisting of following formulae, —C(O)OR wherein each R each of R p is an integer of 1 to 10.