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

摘要

A liquid crystal display device with controllable viewing angle has an upper substrate (101) on which an upper substrate common electrode (103) is disposed, a lower substrate (102) on which a pixel electrode (105) is disposed, and a liquid crystal layer (107) sandwiched between the upper substrate (101) and the lower substrate (102). The liquid crystal molecules are vertical to the upper substrate (101) in substance when no voltage is applied, and a plurality of parallel strip-like lower substrate common electrodes (104) are disposed on the lower substrate (102). The upper substrate common electrode (103) and the pixel electrode (105) provide a electric field perpendicular to the upper substrate (101) in order to form a first viewing mode when a voltage is applied, the lower substrate common electrodes (104) and the pixel electrode (105) provide a electric field perpendicular to the upper substrate (101) and a electric field parallel the upper substrate (101) in order to form a second viewing mode when a voltage is applied. A method of driving the said liquid crystal display device is also disclosed.