Patent ID: 7948623

Claim:
A method of evaluating a color filter comprising a substrate, and at least three color pixels disposed thereon, the method comprising: determining an oblique visibility of a liquid crystal display device equipped with the color filter on the basis of value ξ 1 obtained from equation (1): ξ 1 =∫ a b Δ(λ)· T (λ) dλ (1) wherein “a” and “b” are values respectively representing a wavelength range of a continuous wavelength light and satisfying conditions of: 380≦a, b≦780 and a<b; Δ(λ) represents an optical retardation obtained by irradiating each of the color pixels with a continuous wavelength light containing light components with wavelength λ falling within a range of 380 nm to 780 nm to at an incident angle, and subjecting the transmitted light to measurement using a spectroscopic ellipsometer; and T(λ) represents a spectral transmittance of the color pixels measured at the wavelength λ falling within a range of 380 nm-780 nm.