Patent ID: 7306831

Claim:
A liquid crystal composition having negative dielectric anisotropy comprising: as a first component, at least two compounds represented by at least two formulas selected from formulas (1-1) to (1-6) in the range of 20 to 75% by weight based on the total weight of the liquid crystal composition, and as a second component, at least one compound selected from the group of the compounds represented by formulas (2-1) to (2-3) in the range of 25 to 75% by weight based on the total weight of the liquid crystal composition; wherein R 1 is alkyl or alkenyl; R 2 is alkyl, alkenyl or alkoxy; Z 1 is a single bond or —COO—; A 1 is 1,4-cyclohexylene, 1,4-phenylene, or 1,4-phenylene in which any hydrogen may be replaced by fluorine; A 2 is 1,4-cyclohexylene or 1,4-phenylene; A 3 is 1,4-phenylene, or 1,4-phenylene in which any hydrogen may be replaced by fluorine; one of X 1 and X 2 is fluorine and the other is —CF 2 H.