申请人:Hoechst Aktiengesellschaft
公开号:US05648021A1
公开(公告)日:1997-07-15
This invention relates to novel phenanthrene derivatives of the formula (I) which are particularly suitable for use in liquid-crystal mixtures. The compounds of formula (I) have a broad range of applications. Depending on the choice of substituents, they can be used as base materials from which liquid-crystalline phases are predominantly composed. They can also be added to liquid-crystalline base materials to modify the dielectric and/or optical anisotropy of a dielectric and to optimize its threshold voltage or viscosity. Liquid-crystalline mixtures containing compounds of formula (I) are particularly suitable for use in electrooptical switching and display devices.
本发明涉及公式(I)的新型菲咯烷衍生物,特别适用于液晶混合物中使用。公式(I)的化合物具有广泛的应用。根据取代基的选择,它们可以用作主要由液晶相组成的基础材料。它们也可以添加到液晶基材料中,以修改介电和/或光学各向异性,并优化其阈值电压或粘度。含有公式(I)化合物的液晶混合物特别适用于电光开关和显示设备中使用。