Patent ID: 8361344

Claim:
A liquid crystal composition having a negatively dielectric anisotropy containing at least one compound selected from the group of compounds represented by formula (1) as the first component, and at least one compound selected from the group of compounds represented by formula (2) as the second component: wherein R 1 , R 2 , R 3 and R 4 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; ring A is independently 1,4-cyclohexylene or 1,4-phenylene in which arbitrary hydrogen is replaced by fluorine or chlorine, or tetrahydropyran-2,5-diyl; at least one ring A is tetrahydropyran-2,5-diyl; Z 1 is independently methyleneoxy or carbonyloxy; Z 2 is independently a single bond, ethylene, methyleneoxy or carbonyloxy; m is 1 or 2; n is 1, 2 or 3.