Mesomorphic compound, liquid crystal composition, liquid crystal device, display apparatus and display method

Abstract

A mesomorphic compound represented by the following formula (I): ##STR1## wherein R.sup.1 and R.sup.2 respectively denote a linear or branched alkyl group having 3-18 carbon atoms capable of including one or more methylene groups which can be replaced with at least one species of ##STR2## with the proviso that --O-- cannot directly be connected to --O--, and R.sup.2 can also be halogen, --CN or --CF.sub.3 ; X denotes ##STR3## --CH.sub.2 O-- or --OCH.sub.2 ; A denotes ##STR4## and m and n are respecitvely 0 or 1 with the proviso that m+n=0 or 1. The mesomorphic compound is effective for providing a ferroelectric liquid crystal composition showing an improved low-temperature operation characteristic and a decreased temperature-dependence of response speed.

Dependencies are inferred from the claim text.