| abstract |
Disclosed is a liquid-crystal compound with negative dielectric anisotropy, having the chemical formula: n nwherein A 1 , A 2 , and A 3 are independently selected from cyclohexyl group, cyclohexenyl group, or phenyl group; L 1 and L 2 are independently selected from H or F; R is selected from H, F, Cl, C 1-10 alkyl group, C 1-10 alkenyl group, C 1-10 alkoxy group, or C 1-10 ether group; Y is fluorinated methyl group; m and n are independently selected from an integer of 0-2; and 1≦m+n≦3. |