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 optically active compound represented by the following formula (II): <CHEM> at least one compound represented by the following formula (III): <CHEM> and at least one compound represented by the following formula (I) or (IV): <CHEM> wherein: R1 to R7 respectively denote a linear or branched alkyl group at least one of R4 and R5 being optically active; X1 and X2 respectively denote a single bond, -O-, <CHEM> X3 denotes a single bond, -O- or <CHEM> X4 denotes a single bond -O-, <CHEM> and X5 denotes a single bond -O-, <CHEM> X6 and X7 respectively denote a single bond, -O-, <CHEM> Z1 denotes a single bond or <CHEM> Z2 denotes <CHEM> -CH2O-, -OCH2-or a single bond; <CHEM> s