Patent ID: 7767279

Claim:
A liquid crystal composition having a negative dielectric anisotropy comprising two components, wherein the first component is at least one compound selected from the group of compounds represented by formula (1-1) and (1-2), and the second component is at least one compound selected from the group of compounds represented by formula (2-1) and (2-2), where the second component comprises at least one compound selected from the group of compounds represented by formula (2-1): wherein R 1 and R 2 are each independently alkyl having 1 to 12 carbons, alkoxy having from 1 to 12 carbons, alkenyl having 2 to 12 carbons, or alkenyl having 2 to 12 carbons, arbitrary hydrogen of which is replaced by fluorine; Z 1 is a single bond, ethylene, methyleneoxy or carbonyloxy; and ring A and ring B are each independently tetrahydropyran-2,5-diyl, 1,4-cyclohexylene, or 1,4-phenylene, at least one of ring A and ring B is tetrahydropyran-2,5-diyl.