The invention relates to compounds of the formula I, and to a liquid-crystalline medium, preferably having a nematic phase and negative dielectric anisotropy, which comprises
a) one or more compounds of the formula I
and
b) one or more compounds of the formula III-O
in which the parameters have the respective meanings indicated in Claim 1, to the use thereof in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect, to displays of this type which contain a liquid-crystalline medium of this type, and to the use of the compounds of the formula I for the stabilization of a liquid-crystalline medium which comprises one or more compounds of the formula III-O.
本发明涉及公式I的化合物及液晶介质,该液晶介质首选具有向列相和负介电各向异性,其中包括:a)一个或多个公式I的化合物和b)一个或多个公式III-O的化合物,其中参数具有权利要求书中所示的各自含义,用于电光显示器中,特别是基于VA、
ECB、PALC、FFS或IPS效应的有源矩阵显示器中的使用,用于包含此类液晶介质的此类显示器,并用于将公式I的化合物用于稳定包含一个或多个公式III-O的液晶介质。