Patent ID: 7683203

Claim:
A polymerizable compound, represented by a general formula below: wherein each of R 1 and R 2 independently represents a hydrogen atom, methyl group, or halogen atom; ring A 1 represents ring A 2 represents ring A 3 represents in rings A 1 , A 2 , and A 3 —CH═ may be replaced by —N═; R 3 represents a hydrogen atom, methyl group, or halogen atom; X 1 ′ represents a hydrogen atom, alky group having 1 to 8 carbon atoms, alkoxy group having 1 to 8 carbon atoms, halogen atom, or cyano group; X 2 , X 4 to X 6 , Y 1 to Y 6 , and Z 1 to Z 6 independently represents a hydrogen atom, alky group having 1 to 8 carbon atoms and optionally having at least one substituent, alkoxy group having 1 to 8 carbon atoms and optionally having at least one substituent, alkenyl group having 2 to 6 carbon atoms and optionally having at least one substituent, halogen atom, or cyano group; at least one of X 1 ′, X 2 , X 4 to X 6 , Y 1 to Y 6 , and Z 1 to Z 6 is other than hydrogen; each of L 1 , L 2 , and L 3 , which are linkages, is independently a single bond, —COO—, —OCO—, —(CH 2 ) d —, —CH═CH—, —(CH 2 ) e O—, —O(CH 2 ) f —, —O(CH 2 ) g O—, —OCOO(CH 2 ) h —, —(CH 2 ) 1 OCOO—, —(CH 2 ) j O(CH 2 ) k —, —O(CH 2 ) i —[Si(CH 3 ) 2 O] m —Si(CH 3 ) 2 (CH 2 ) o —, —(OCH 2 CH 2 ) p —, —(CH 2 CH 2 O) q —, —(OCH 2 CH(CH 3 )) r —, —(CH (CH 3 )CH 2 ) s —, —CH═CHCH 2 O—, —OCH 2 CH═CH—, —CH═CH—COO—, —OCO—CH═CH—, —C≡C—, —(CH 2 ) 2 COO—, —OCO(CH 2 ) 2 —, —CF═CF—, —OCF 2 —, —CF 2 O—, —C≡C—COO—, —OCO—C≡C—, or —O—, in which part of the carbon atoms may be silicon atoms; each of d to m and o independently represents an integer of 1 to 8; each of p to s independently represents an integer of 1 to 3; and n represents 0 or 1.