Patent ID: 7440118

Claim:
An apparatus for inspection of a color filter composed of a colored pixel array provided on a transparent substrate and an overcoat layer formed on the colored pixel array, each of colored pixels being made of a resin layer in which coloring particles are dispersed, the apparatus comprising: a plate on which the color filter is placed; a light source placed almost directly above the surface of the plate and having an emission-line spectrum of at least one emission line corresponding to one color of the coloring particles in the color filter; a photo-receiver, placed obliquely upward with respect to the surface of the plate and having a spectral sensitivity corresponding to the emission-line spectrum of the light source, for receiving reflected light from the color filter on the plate during inspection; and a detection means for creating a brightness distribution for the color using a color signal output from the photo-receiver as corresponding to its spectral sensitivity to detect flatness (unevenness) of a surface of the overcoat layer.