Patent ID: 7948590

Claim:
A retardation substrate comprising: a substrate; an optically anisotropic solidified liquid crystal layer which is supported by the substrate and formed as a continuous film made from a same material; and a color filter layer interposed between the substrate and the solidified liquid crystal layer or facing the substrate with the solidified liquid crystal layer interposed therebetween, wherein the color filter layer comprises first to third coloring pixels different in the wavelength of transmitted light, the first to third coloring pixels are each constituted by a reflective display area and a transmissive display area, the reflective display areas of the coloring pixels are each constituted by a coloring section and a non-coloring section, the solidified liquid crystal layer comprises first to third regions respectively facing the reflective display areas of each coloring pixels, the first to third regions each constituted by a sub-region A and a sub-region B respectively facing the coloring section and the non-coloring section of the reflective display area, an in-plane birefringence of the 1 A sub-region is larger than that of the 2 A subregion, an in-plane birefringence of the 3 A sub-region is smaller than that of the 2 A subregion, and an in-plane birefringence of the 1 B sub-region is the same as that of the 3 B sub-region, smaller than that of the 1 A sub-region and larger than that of the 3 A sub-region.