Patent ID: 8637125
Filing Date: 2014-01-28
Classification: C07C,C09K

Abstract:
1. A liquid crystal composition that has a negative dielectric anisotropy and contains at least one compound selected from the group of compounds represented by formula (1) as a first component and at least one compound selected from the group of compounds represented by formula (2) as a second component: wherein R 1 is alkyl having 1 to 12 carbons in which one or two of hydrogen are replaced by fluorine; R 2 , R 3 and R 4 are independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons or alkenyl having 2 to 12 carbons; ring A and ring B are independently X 1 and X 2 are independently fluorine or chlorine; Y 1 is hydrogen or methyl; Z 1 and Z 2 are independently a single bond, ethylene, methyleneoxy or carbonyloxy; and m and n are independently 0, 1, 2 or 3, and a sum of m and n is 1, 2 or 3.