High temperature liquid crystal substances having four rings and liquid crystal compositions containing the same
申请人:Chisso Corporation
公开号:EP0099099A2
公开(公告)日:1984-01-25
Liquid crystal compounds which exhibit a liquid crystal phase within a broad temperature range and have a high clearing point and nevertheless a low viscosity, and liquid crystal compositions containing the same are provided, which liquid crystal compounds have positive dielectric anisotropy values and are expressed by the general formula
wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms;
Y represents H or F; and X represent a halogen atom or CN.
本发明提供了在宽温度范围内呈现液晶相的液晶化合物,它们具有较高的澄明点和较低的粘度,还提供了含有这些液晶化合物的液晶组合物,这些液晶化合物具有正的介电各向异性值,用通式表示为
其中 R 代表氢原子或 1 至 10 个碳原子的烷基;
Y 代表 H 或 F;X 代表卤素原子或 CN。