LATERAL ELECTRIC FIELD LIQUID CRYSTAL DISPLAY DEVICE SUITABLE FOR IMPROVEMENT OF APERTURE RATIO

摘要

In an active matrix liquid crystal display device that is capable of realizing viewing angles comparable to those of Brawn tubes and is for controlling display by electric fields extending substantially parallel to a substrate surface, there is provided an active matrix liquid crystal display device which is bright and low in power dissipation. Constitute a pixel electrode and its counter electrode capable of application of an electric field that is nearly parallel to the substrate surface, and also constitute either the pixel electrode or the counter electrode from a transparent electrode while simultaneously arranging the alignment state of liquid crystals and the polarization axis of a polarizer plate in such a way as to perform dark displaying upon application of no electric fields thereto. It is possible to provide an active matrix liquid crystal display device of the lateral electric field scheme which has wide view-angle characteristics and excellent in contrast ratio and aperture ratio while improving the maximum transmissivity.