Patent ID: 7951450

Claim:
A red color filter having a red filter layer comprising: a. a pigment having a maximum absorption at a wavelength within the range of from 450 to 575 nm wherein at least 90 volume percent of the pigment particles have a particle size less than 100 nm; and b. the red filter layer has a transmittance of 80% or more at a wavelength of 650 nm, no more than 10% at a wavelength of 585 nm, and no more than 5% at all wavelengths in the range from 580 to 410 nm and has chromaticity coordinates (x, y) in the 1931 CIE XYZ colorimetric system, calculated using CIE Standard Illuminant D65, that satisfy the expressions 0.665≦x≦0.68 and 0.30≦y≦0.34, wherein no more than 10 volume percent of the pigment particles have a particle size less than 5 nm.