Patent ID: 8097309

Claim:
A liquid crystal composition that has negative dielectric anisotropy, comprising two components, wherein a first component is at least one compound selected from the group of compounds represented by formula (1), and a 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, alkenyloxy having 2 to 11 carbons, or alkenyl having 2 to 12 carbons in which arbitrary hydrogen is replaced by fluorine; X 1 and X 2 are each independently hydrogen, fluorine or chlorine; X 3 and X 4 are each independently fluorine or chlorine; Z 1 and Z 2 are each independently a single bond, ethylene, methyleneoxy, oxymethylene, carbonyloxy or oxycarbonyl; and m is 0 or 1.