The invention relates to a liquid crystalline compound of the formula I
1
wherein X
1
and R
1
are defined as in claim 1. The invention further relates to a liquid crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy containing one or more compounds of formula I and its use in electrooptical displays and projection systems, in particular reflective displays and displays based on a birefringence effect, such as OCB displays.
该发明涉及一种液晶化合物,其
化学式为I1,其中X1和R1的定义如权利要求书中所述。该发明进一步涉及一种基于带有正介电各向异性的极性化合物混合物的液晶介质,其中该混合物含有一个或多个化合物的
化学式为I,并且其在电光显示和投影系统中的使用,特别是反射显示和基于双折射效应的显示,如OCB显示。