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:
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-,
Y1 is group
and Y2 is grouf
and when XI is group -OOC-, Y1 is group
and Y2 is group
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.
本发明的液晶化合物是新型
酯类化合物,显示出胶状液晶相,并能增加介电常数各向异性,由以下通式表示: 其中 R 是烷基;X1 和 X2 彼此相同或不同,并且是 -COO- 和 -OOC- 基团,当 X1 是 -COO- 基团时,Y1 是基团,Y2 是基团,当 XI 是 -OOC- 基团时,Y1 是基团,Y2 是基团 本发明的液体组合物含有本发明的新型化合物,本发明的液晶显示装置使用本发明的液晶组合物,以利用本发明的新型化合物的特性。 特别是,本发明的液晶显示装置是一种热地址显示装置。