Patent ID: 7157124

Claim:
A compound represented by the following Formula (1) or (2): wherein R a is any one of polymerizable groups represented by formulae (3-1) to (3-5); R b is hydrogen, halogen, —CN, —NCO, —NCS or alkyl having a carbon number of 1 to 20; in the above alkyl, at least a —CH 2 — can be substituted with —O—, —S—, —CO—, —COO—, —OCO—, —CH═CH— or —C≡C—, and at least a hydrogen can be substituted with halogen or —CN; A is 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, naphthalene-2,6-diyl, tetrahydronaphthalene-2,6-diyl, fluorene-2,7-diyl, bicyclo[2.2.2]oct-1,4-diyl or bicyclo[3.1.0]hex-3,6-diyl; in the above rings, —CH 2 — can be substituted with —O—, and —CH═ can be substituted with —N═; in the above rings, at least a hydrogen can be substituted with halogen, alkyl having a carbon number of 1 to 5 or halogenated alkyl having a carbon number of 1 to 5, and when the above substituents are adjacent, they can be combined with each other to form a ring together with a carbon-carbon bond in the ring, but at least one A is substituted 1,4-phenylene represented by formula (4-1) or (4-2); Z is a single bond or alkylene having a carbon number of 1 to 20; in the above alkylene, at least a —CH 2 — can be substituted with —O—, —S—, —COO—, —OCO—, —CH═CH—, —CF═CF— or —C≡C—, and at least a hydrogen can be substituted with halogen; R c is hydrogen, halogen, —CF 3 or alkyl having a carbon number of 1 to 5; m is an integer of 1 to 6, and q is 0 or 1; and in Formula (1), when at least one A is substituted 1,4-phenylene represented by formula (4-2) and R a is a group represented by formula (3-1), the groups R c in R a are not all hydrogen atoms.