摘要:
A liquid crystal composition comprises at least one type of liquid crystal compound having the following general formula (I) and at least one type of liquid crystal compound having the following general formula (II): ##STR1## wherein R.sub.1 and R.sub.2 each is a straight-chain or branched-chain alkyl group having 1 to 18 carbon atoms. These alkyl groups may have alkoxy groups having 1 to 12 carbon atoms as substituents. Both R.sub.1 and R.sub.2 are optically inactive. Z.sub.1 is a single bond, --O--, ##STR2## wherein R.sub.3 and R.sub.4 each is a straight-chain or branched-chain alkyl group having 1 to 18 carbon atoms. Z.sub.2 and Z.sub.3 each is single bond, ##STR3## A.sub.1 is --A.sub.2 -- or --A.sub.2 --A.sub.3 --, wherein A.sub.2 and A.sub.3 are ##STR4##
摘要:
A liquid crystal composition having a chiral smectic phase comprising at least one liquid crystal compound having the general formula (I) shown below: ##STR1## wherein R.sub.1 and R.sub.2 each is a straight chain or branch alkyl group which may have a substituent group having 1 to 16 carbons, Z.sub.1 is a single bond, --O--, ##STR2## and X.sub.1 is a halogen atom.