Fluorinated (dihydro)phenanthrene derivatives, and their use in liquid-crystalline media

摘要

The invention relates to liquid-crystalline (dihydro)phenanthrene derivatives of the formula I in which R, G, A<1>, Z<1>, m, L<1>, L<2>, L<3>, L<4>, L<5 >and Y are as defined in claim 1, and to liquid-crystalline media comprising at least one (dihydro)phenanthrene derivative of the formula I, and to electro-optical displays containing a liquid-crystalline medium of this type.