Liquid-crystal compound, liquid crystal composition and liquid crystal display device

摘要

The present liquid crystal compounds are novel ester-type compounds showing a smectic liquid crystal phase and being capable of increasing a dielectric constant anisotropy, represented by the following general formula: R-X1-Y1-X2-Y2-NO2, wherein R is an alkyl group; X1 and X2 are the same or different from each other and are group -COO- and -OOC-, and when X1 is group -COO-, <IMAGE> <IMAGE> <IMAGE> <IMAGE> +TR <IMAGE> The present liquid composition contains the novel compound, and the present liquid crystal display device uses the liquid crystal composition for utilizing the characteristics of the novel compound. Particularly, the present liquid crystal display device is a thermally addressed display device.