Patent ID: 8465886
Filing Date: 2013-06-18
Classification: G02B,G02F

Abstract:
1. A color filter substrate which exhibits color filter contrast of not less than 9000 and comprises: a transparent substrate; and a plurality of color pixels differing in color and formed on the transparent substrate, wherein each of the plurality of color pixels is formed of a photosensitive color composition containing two or more kinds of pigments, a birefringence Δn of a pigment dispersion represented by following equation (1) and a content of pigments contained in the photosensitive composition satisfies all of below-described conditions (a), (b) and (c), and, an absolute value of retardation in thickness direction (Rth) of the color pixels which is represented by following equation (2) is confined to a range of 0-3 nm: (a) a content of a pigment exhibiting an absolute value of birefringence Δn less than 0.011 is confined to 34% by mass to 100% by mass based on a total amount of pigments in the photosensitive color composition; (b) (a content of pigment exhibiting an absolute value of birefringence Δn less than 0.011)>(a content of pigment exhibiting an absolute value of birefringence Δn not less than 0.011 and less than 0.016)≧0; and (c) (a content of pigment exhibiting an absolute value of birefringence Δn not less than 0.011 and less than 0.016)≧(a content of pigment exhibiting an absolute value of birefringence Δn of 0.016-0.055)≧0: wherein n wherein Nx is a refractive index in x-direction in plane of a color layer constituting the color pixel; Ny is a refractive index in y-direction in plane of a color layer constituting the color pixel; Nz is a refractive index in thickness direction of a color layer constituting the color pixel; Nx constitutes a lagging axis represented by Nx≧Ny; and d is a thickness (nm) of the color layer.