Patent ID: 8049844

Claim:
A color filter adapted to be used in a liquid crystal display device using, as a light source, a white LED having spectral properties such that it has a wavelength (λ1) at which an emission intensity becomes the highest, within a wavelength range of 430 nm to 485 nm and also has a peak wavelength (λ2) of a second emission intensity within a wavelength range of 530 nm to 580 nm, and a ratio (I2/I1) of an emission intensity I2 at the wavelength λ2 to an emission intensity I1 at the wavelength λ1 is 0.2 or more, but 0.7 or less, the color filter comprising a red filter segment, a green filter segment and a blue filter segment, on a substrate, wherein the red filter segment has a 50% transmittance wavelength within a range of 595 to 610 nm and a transmittance of 85% or more at a wavelength of 630 nm, the blue filter segment has a maximum transmittance wavelength of 455 nm or less and a transmittance of 55% or more at a wavelength of 450 nm, and a thickness of each of the red filter segment, the green filter segment and the blue filter segment is 3.0 μm or less, and wherein the red segment contains C.I. Pigment Red 177 and C.I. Pigment Red 179.