Patent ID: 7999451
Filing Date: 2011-08-16
Classification: G02B,G02F,H01L

Abstract:
1. A blue color filter having a blue filter layer comprising: a. a first pigment having a maximum absorption at a wavelength within the range of from 550 to 650 nm; b. a second pigment having a maximum absorption at a shorter wavelength than the first pigment within the range of from 500 to 600 nm; and c. wherein the blue filter layer has chromaticity coordinates (x, y) in the 1931 CIE XYZ colorimetric system, calculated using CIE Standard Illuminant D65, that satisfy the expressions 0.134≦x≦0.15 and 0.03≦y≦0.06 wherein at least 90 volume percent of the first pigment particles have a particle size less than 100 nm and at least 90 volume percent of the second pigment particles have a particle size less than 100 nm.