Patent ID: 7651629

Claim:
A liquid crystal display device comprising a pair of substrates, a liquid crystal layer located between the pair of the substrates, a group of electrodes located on at least one of the pair of the substrates and capable of applying an electric field to the liquid crystal layer, a color filter located on one of the substrates, and a polarizing plate located on at least one of the substrates, wherein the liquid crystal layer has two or more regions different in thickness in the direction substantially perpendicular to the substrates, wherein a liquid crystal composition constituting the liquid crystal layer contains one or more compounds represented by the formula 1 wherein each of X 1 and X 2 is an alkyl group, an alkenyl group, an alkoxy group, an alkenyloxy group, a substituent formed by fluorination of any of these groups, a halogen atom, a cyano group, a nitro group or an isothiocyano group; Ps are independently a fluorine atom, a hydrogen atom or an alkyl group; A and B are independently —CF 2 O—, —CH 2 CH 2 —, —CH 2 O— or —CF 2 —CH 2 — which have a structure comprising single bonds; each of Z 1 , Z 2 and Z 3 is a molecular group comprising a 6-membered ring and selected from a benzene ring, a cyclohexane ring, a fluorinated benzene ring and a fluorinated cyclohexane ring; and each of m and o is 0 or 1; and n is 1 or 2: wherein said color filter comprises red, green and blue color filters, and two or more regions different in the thickness of said liquid crystal layer are formed because the red, green or blue color filter has a non-uniform thickness in the direction perpendicular to said substrates.