. "ing of a hydrogen atom, a halogen atom and a cyano group; R2 has the formula --(CO)m --R4, wherein m is 0 or 1 and R4 is a hydrogen atom or an alkyl group having 1 to 15 carbon atoms; and the symbol * is an asymmetric carbon atom; and a chiral or non-chiral liquid crystal compound selected from the group consisting of a compound of the formula (J-1): ##STR106## wherein R' and R are the same or" . . . .