Patent ID: 7964254

Claim:
An optical laminate (optical laminate C) which comprises a layer (layer A) comprising a resin having a negative intrinsic birefringence and at least one layer (layer B) comprising a transparent resin, having substantially no orientation and laminated at least on one face of layer A and satisfies a relation |Re(A)|>|Re(B)|, wherein Re(A) and Re(B) represent an in-plane retardation of layer A and an in-plane retardation of layer B, respectively, measured with light having a wavelength of 400 to 700 nm, wherein the optical laminate satisfies a relation Σnz>Σny−0.002, wherein Σnz represents a refractive index in a direction of a thickness and Σny and Σnx represent refractive indices in two directions which are perpendicular to the direction of a thickness and perpendicular to each other of optical laminate C measured with light having a wavelength of 550 nm, and Σnx, Σny and Σnz satisfy relations Σnx<Σny and Σnx<Σnz; and wherein the optical laminate satisfies a relation Tg(A)>Tg(B)+20, wherein Tg(A) and Tg(B) represent glass transition temperatures in ° C. of the resin of layer A and the resin of layer B, respectively.