Patent ID: 6620467
Filing Date: 2003-09-16
Classification: C09K

Abstract:
A supertwisted nematic liquid crystal display having a twist angle of 180 to 270Â° C. and comprising:a pair of substrates each having an orientation-controlling layer and a transparent electrode; a liquid crystal layer comprising a liquid crystal composition, which is sandwiched by said substrates; and at least one polarizing sheet provided on at least one of said substrates, wherein said liquid crystal composition comprises: at least one compound represented by formula (I): â€ƒwherein R1 represents an alkyl group having 1 to 16 carbon atoms, an alkoxy group having 1 to 16 carbon atoms, an alkenyl group having 2 to 16 carbon atoms, an alkoxyalkyl group having 2 to 16 carbon atoms, or an alkenyloxy group having 3 to 16 carbon atoms; and at least one compound represented by formula (II): â€ƒwherein R2 and R3 each independently represent a fluorine-substituted or unsubstituted alkyl group having 1 to 16 carbon atoms, a fluorine-substituted or unsubstituted alkoxy group having 1 to 16 carbon atoms, or a fluorine-substituted or unsubstituted alkenyl group having 2 to 16 carbon atoms, and wherein said liquid crystal composition has a nematic-isotropic phase transition temperature of 75 to 150Â° C. and a refractive index anisotropy (&Dgr;n) of 0.07 to 0.25.