Patent ID: 6267910
Filing Date: 2001-07-31
Classification: C09K

Abstract:
An antiferroelectric liquid crystal composition having a chiral smectic C.sub.A * phase composed by blending liquid crystal composition-constituting compounds, each having an asymmetric carbon and the same direction of inclination of optical axis (hereinafter referred to as ""tilt sense"") produced by application of an electric field, and the composition having a chiral smectic C.sub.A * phase comprised of a mixture of two enantiomers each having an asymmetric carbon; one having the stereosense (+) and the other having the stereosense (-), the stereosense being defined so that, when the molecule is viewed so that the bond between the core group and the asymmetric carbon is behind the asymmetric carbon atom, the stereosense is (+) if the remaining three groups (or atoms) are arranged clockwise in order of length of the groups (or, if the groups are the same length, in order of their volume), and the stereosense is (-) if the groups are arranged counter-clockwise.