LIQUID CRYSTAL DISPLAY DEVICE AND ITS DRIVING METHOD

摘要

PURPOSE: To eliminate the dependency on visual field angle by a prospect angle of a screen and obtain a liquid crystal display device which is wide in visual field angle and is easy to use by improving scanning signal potential and varying the liquid crystal voltages to be impressed successively on pixels in the upper part and lower part of a screen. CONSTITUTION: This liquid crystal display device is so constituted that the values of an auxiliary capacitor ratio Cs/Ct and a parasitic capacitor ratio Cgd/Ct are varied with each of the plural display electrodes formed in respective pixels. The liquid crystals are so driven that the values of the compensation potentials Vga and Vgb impressed on scanning signal wirings formed with the auxiliary capacitors Cs at the point of the time the potential impressed on the gate terminals of switching elements 14a, 14b changes from the on potential to the off potential are successively increased or decreased. The liquid crystal voltage Vlc is successively changed from the upper part to the lower part of the screen and the dependency on the visual angle by the prospect angle of the screen is eliminated by successively increasing or decreasing the values of the compensation potentials Vga, Vgb in correspondence to scanning from the upper part to the lower part of the screen.