LIQUID CRYSTAL DISPLAY DEVICE WITH CONTROLLABLE VIEWING ANGLE AND DRIVING METHOD THEREOF

摘要

A liquid crystal display device with controllable viewing angle of the present invention has an upper substrate on which an upper substrate common electrode is disposed, a lower substrate on which a pixel electrode is disposed, and a liquid crystal layer sandwiched between the upper and the lower substrates. The liquid crystal molecules are vertical to the upper substrate when no voltage is applied, and a plurality of strip-like lower substrate common electrodes are disposed on the lower substrate and arranged in parallel substantially. The upper substrate common electrode and the pixel electrode provide an electric field perpendicular to the upper substrate, to form a first viewing angle mode when a voltage is applied, the lower substrate common electrode and the pixel electrode provide an electric field perpendicular to the upper substrate to form a second viewing angle mode when a voltage is applied.

主权项

1. A liquid crystal display device comprising:
an upper substrate on which an upper substrate common electrode is disposed, a lower substrate parallel to the upper substrate on which a pixel electrode is disposed, and a liquid crystal layer sandwiched between the upper substrate and the lower substrate, the liquid crystal molecules are arranged perpendicular to the upper substrate in substance when no voltage is applied, wherein a plurality of strip-like lower substrate common electrodes are disposed on the lower substrate and arranged in parallel substantially, and wherein the upper substrate common electrode and the pixel electrode provide an electric field perpendicular to the upper substrate when a voltage is applied to the upper substrate common electrode and the pixel electrode to form a first viewing angle mode, and the lower substrate common electrode and the pixel electrode provide an electric field perpendicular to the upper substrate and an electric field parallel to the upper substrate when a voltage is applied to the lower substrate common electrode and the pixel electrode to form a second viewing angle mode, wherein the dielectric anisotropy of the liquid crystal molecules is negative, wherein there is an angle between a viewing direction of the first viewing angle mode and a viewing direction of the second viewing angle mode.