Patent ID: 9164213
Filing Date: 2015-10-20
Classification: C08G,G02B,H01L

Abstract:
1. A polarizing plate for an organic EL panel, comprising: a polarizer, a first retardation layer; and a second retardation layer, wherein: the first retardation layer shows a refractive index characteristic of nx>ny≧nz and satisfies a relationship of Re(450)<Re(550); the second retardation layer shows a refractive index characteristic of nz>nx≧ny; an angle θ formed between an absorption axis of the polarizer and a slow axis of the first retardation layer satisfies a relationship of 35°≦θ≦55°; a laminate of the first retardation layer and the second retardation layer has an Re(550) of from 120 nm to 160 nm and an Rth(550) of from 40 nm to 100 nm; the first retardation layer has a water absorption rate of 3% or less; where Re(450) represents an in-plane retardation measured at 23° C. with light having a wavelength of 450 nm, Re(550) represents an in-plane retardation measured at 23° C. with light having a wavelength of 550 nm, and Rth(550) represents a thickness direction retardation measured at 23° C. with the light having a wavelength of 550 nm.