Patent ID: 7803436

Claim:
A liquid crystal composition having a negative dielectric anisotropy comprising a first component comprising at least one compound selected from the group of compounds represented by formulas (1-1-1) and (1-2-1), and a second component comprising at least one compound selected from the group of compounds represented by formula (2-1): in formulas (1-1-1), (1-2-1) and (2-1), R 1 is independently alkyl having 1 to 12 carbons; R 2 , R 3 and R 4 are each independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons or alkenyl having 2 to 12 carbons; and ring A is 1,4-cyclohexylene or 1,4-phenylene, wherein R 4 in formula (2-1) is alkenyl having 2 to 12 carbons in at least one of the second compound.