Ferroelectric chiral smectic liquid crystal composition and liquid crystal device using same

摘要

A ferroelectric chiral smectic liquid crystal composition, comprising at least one compound represented by the following formula (I): <IMAGE> (I) wherein R1 and R2 respectively denote a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent; X1 and X2 respectively denote a single bond, <IMAGE> Y1 denotes -CH2O- or -OCH2; and m and n are respectively 1 or 2; and at least one compound represented by the following formula (II): <IMAGE> (II) wherein R3 and R4 respectively denote a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent, at least one of R3 and R4 being optically active; and; X3 and X4 respectively denote a single bond, <IMAGE>