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Abstract

A nematic liquid crystal composition includes a compound of formula (1) and a host mixture: ##STR00001## wherein `R` is chosen from C.sub.nH.sub.2n+1O, C.sub.nH.sub.2n+1, C.sub.nH.sub.2n+1S or C.sub.nH.sub.2n-1; `n` is an integer of 1 to 15; `A` is ##STR00002## `a` is 0 or 1; `B` is --CH.sub.2CH.sub.2--, --C.dbd.C--, --C.ident.C-- or ##STR00003## b` is 0 or 1; `D` is ##STR00004## --CH.sub.2CH.sub.2--, --C.dbd.C-- or --C.ident.C--; `d` is 0 or 1; `X` is H, F, Cl, Br, NCS or CN; and `Y` is from NCS, SCN or F. A liquid crystal display apparatus employing the nematic liquid crystal composition has a high response speed and a high phase transition temperature. In addition, the nematic liquid crystal composition has an augmented birefringence and a dielectric anisotropy. The liquid crystal display apparatus using the nematic liquid crystal composition may have an enhanced brightness.

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