Patent ID: 8206610

Claim:
The invention concerns a liquid crystal composition having a negative dielectric anisotropy that includes two components, wherein the first component is at least one compound selected from the group of compounds represented by formulas (1) and the second component is at least one compound selected from the group of compounds represented by formula (2): 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 and, at least one ring A is Z 1 is independently a single bond, ethylene, methyleneoxy or carbonyloxy; and m is independently 1 or 2.