Patent ID: 8722156

Claim:
A liquid crystal compound having the following formula: wherein A 1 , A 2 , and A 3 are independently hydrogen, halogen, cyano, thiocyanato, or —OCF 3 ; R 1 is hydrogen, halogen, C 1 -C 12 alkyl, C 1 -C 12 alkoxy, C 1 -C 12 haloalkly, C 2 -C 12 alkenyl, or C 2 -C 12 alkynyl; R 2 and R 3 are independently halogen, C 1 -C 6 alkyl, C 1 -C 6 haloalkly, cyano, thiocyanato, or —OCF 3 ; and Z is a single bond, —O—, —CH 2 O—, —C(O)O—, —OCO—, —C(O)NH—, or —CH═CH—.