Flüssigkristallzusammensetzung und Flüssigkristallanzeigevorrichtung

摘要

Liquid crystal compositions are disclosed which have low threshold voltage, small temperature dependence of the threshold voltage, high stability against heat and ultraviolet rays, and small frequency dependence of dielectric anisotropy ( DELTA epsilon ) at low temperature while fulfilling general characteristics required for STN mode materials, characterized by comprising the compound expressed by formula (1) wherein R<1> represents alkyl having 1 to 10 carbon in which one methylene may be replaced by -O- or -CH=CH-; X<1> and X<2> each independently represents H or F.