Ferroelectric smectic liquid crystal compound and composition containing the same

摘要

A liquid crystal compound represented by formula: <IMAGE> (I) wherein R1 represents a straight chain alkyl group having from 4 to 18 carbon atoms; R2 represents a straight chain alkyl group having from 2 to 6 carbon atoms or a branched alkyl group having from 3 to 6 atoms and having a methyl group as a side chain; and m and n each represents 1 or 2, is disclosed. The liquid crystal compound of formula (I) is optically and electrically stable and exhibits fast electro-optical switching in image display.