Mesomorphic compound, liquid crystal composition containing same, liquid crystal device using same and display apparatus

摘要

A mesomorphic compound represented by: <IMAGE> where R1 and R2 are alkyl; X1 and X3 are a single bond, <IMAGE> X2 is a single bond, <IMAGE> A1, A2 and A3 are a single bond, aryl, heteroaryl, pyrimidyl or cyclohexyl, X4a, X5a, X4b, X5b, X4c and X5c are H, F, Cl, Br, -CH3, -CN or -CF3; and n is 0 or 1.