Patent ID: 7914860

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 formulas (1-1) to (1-3), and the second component is at least one compound selected from the group of compounds represented by formulas (2-1) to (2-3): wherein in formulas (1-1) to (1-3) and formulas (2-1) to (2-3), R 1 and R 3 are each independently alkyl or alkenyl; R 2 , R 4 and R 5 are each independently alkyl, alkenyl or alkoxy; ring B, ring C and ring D are each independently 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene or 3-fluoro-1,4-phenylene; Z 1 , Z 2 and Z 3 are each independently a single bond, —(CH 2 ) 2 —, —CH 2 O— or —OCH 2 —; and one of X 1 and X 2 is fluorine and the other thereof is chlorine.