Patent ID: 8860913

Claim:
A liquid crystal display device comprising: a pair of substrates; and a liquid crystal layer between the substrates, wherein at least one of the substrates comprises a photo-alignment film and a photopolymer film on the photo-alignment film, the photopolymer film comprises polymers constituted by a photopolymerizable monomer, the photopolymerizable monomer includes two or more polymerizable functional groups, the polymerizable functional groups are bonded to each other through two or more aromatic rings, the aromatic rings include at least one naphthalene ring, a bond between the naphthalene ring and another aromatic ring has a rotational degree of freedom, and the photopolymerizable monomer is a compound represented by Formula (I): P 1 -A 1 -(Z 1 -A 2 ) n -P 2 (I) wherein P 1 and P 2 are the same as or different from each other and each represent an acrylamide group, a methacrylamide group, an acrylate group, a methacrylate group, a vinyl group, a vinyloxy group, or an epoxy group; A 1 represents a naphthalene-2,6-diyl group; A 2 represents a naphthalene-2,6-diyl group; Z 1 represents O, or a direct bond between A 1 and A 2 or A 2 and A 2 ; n represents 1 or 2; and hydrogen atoms contained in A 1 and A 2 may be substituted by halogen groups or methyl groups.