Patent ID: 7875327

Claim:
A nematic liquid crystal compound represented by any one of formulas (b-1), (b-3) to (b-6): wherein in formulas (b-1), (b-3) to (b-6): (i) Rc and Rd are each independently hydrogen, a halogen or alkyl having approximately 1 to approximately 10 carbons, provided that in the alkyl, —CH 2 — may be replaced by —O—, —(CH 2 ) 2 — may be replaced by —CH═CH—, and hydrogen may be replaced by a halogen; (ii) ring A 3 and ring A 4 are each independently trans-1,4-cyclohexylene or 1,4-phenylene, provided that in these rings hydrogen may be replaced by a halogen, and in the case where the ring is trans-1,4-cyclohexylene, —CH 2 — may be replaced by —O—, and —CH 2 CH— may be replaced by —CH═C—; and (iii) Z 3 and Z 4 are each independently a single bond, —COO—, —OCO—, —OCH 2 —, —CH 2 O— or —CH 2 CH 2 —; and provided that in formula (b-6), A 4 are trans-1,4-cyclohexylene, provided that in these rings hydrogen may be replaced by a halogen, and in the case where the ring is trans-1,4-cyclohexylene, —CH 2 — may be replaced by —O—, and —CH 2 CH— may be replaced by —CH═C—.