Patent ID: 8004641

Claim:
A color filter substrate, comprising: a substrate; a black matrix disposed on the substrate; a color filter on a sub-pixel area partitioned by the black matrix; an overcoat layer disposed on the color filter to planarize the color filer; an anti-reflective layer configured to prevent the reflection of light in the color filter substrate; and a common electrode disposed on the overcoat layer to receive a common voltage, wherein the anti-reflective layer comprises at least one of: a first anti-reflective layer disposed between the substrate and the color filter and having a refractive index between a refractive index of the substrate and a refractive index of the color filter; a second anti-reflective layer disposed between the color filter and the overcoat layer and having a refractive index between the refractive index of the color filter and a refractive index of the overcoat layer; and a third anti-reflective layer disposed between the overcoat layer and the common electrode and having a refractive index between the refractive index of the overcoat layer and a refractive index of the common electrode, wherein each of the first anti-reflective layer and the second anti-reflective layer comprises one of Al 2 O 3 , SiOx, MgF 2 AlF 2 CeF 3 LaF 3 and NdF 3 .