Normally-white TN-mode LCD device

摘要

A normally-white twisted-nematic-mode LCD device has first and second optical compensation films for compensating the retardation of an LC layer sandwiched between a pair of substrates. The LC layer is applied with an applied voltage Vw having a relation with respect to the threshold voltage Vth of the LC and a pre-tilt angle theta of the LC layer, as follows: Vw<=VTHxexp(-0.235xtheta+7.36x10^-3). By using the applied voltage Vw depending on the pre-tilt angle theta increases the viewing angle which achieves a desired contrast ratio.