Patent ID: 8454857

Claim:
A polymerizable liquid crystal compound shown by the following formula (1), wherein Y 1 to Y 6 individually represent a single bond, —O—, —S—, —O—C(═O)—, —C(═O)—O—, —O—C(═O)—O—, —NR 1 —C(═O)—, —C(═O)—NR 1 —, —O—C(═O)—NR 1 —, —NR 1 —C(═O)—O—, —NR 1 —C(═O)—NR 1 —, —O—NR 1 —, or —NR 1 —O—, R 1 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, G 1 and G 2 individually represent a substituted or unsubstituted divalent aliphatic group having 1 to 20 carbon atoms that may include —O—, —S—, —O—C(═O)—, —C(═O)—O—, —O—C(═O)—O—, —NR 2 —C(═O)—, —C(═O)—NR 2 —, —NR 2 —, or —C(═O)— (excluding a case where the aliphatic group includes two or more adjacent —O— or —S—), R 2 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, Z 1 and Z 2 individually represent an alkenyl group having 2 to 10 carbon atoms that may be substituted with a halogen atom, A 1 and A 2 individually represent a divalent organic group A having 1 to 30 carbon atoms, M 1 and M 2 individually represent a substituted or unsubstituted 2,6-naphthylene group or a substituted or unsubstituted 1,4-phenylene group, provided that at least one of M 1 and M 2 represents a substituted or unsubstituted 2,6-naphthylene group, L 1 and L 2 individually represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and a and b are individually 0 or 1.