Patent ID: 8211512

Claim:
A liquid crystal composition having a negative dielectric anisotropy that comprises at least one compound selected from the group of compounds represented by formula (1) as a first component and at least one compound selected from the group of compounds represented by formula (2) as a second component: wherein R 1 and R 2 are each independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, alkenyl having 2 to 12 carbons, or alkenyl having 2 to 12 carbons in which arbitrary hydrogen is replaced by fluorine; R 3 is independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, or alkenyl having 2 to 12 carbons in which arbitrary hydrogen is replaced by fluorine; ring A is independently 1,4-cyclohexylene or 1,4-phenylene; Z 1 is independently a single bond, ethylene, methyleneoxy or carbonyloxy; X 1 and X 2 are each independently fluorine or chlorine; m is 1, 2 or 3.