Patent ID: 7800570
Filing Date: 2010-09-21
Classification: G02F,G09G

Abstract:
1. A method for driving an LCD device capable of controlling a viewing angle comprising: driving the LCD device in an fringe field switching (FFS) mode during a frame frequency period to obtain a wide viewing angle; and driving the LCD device in both the FFS mode and a viewing angle control (VAC) mode during the frame frequency period by dividing the frame frequency period, thereby obtaining a narrow viewing angle; wherein the LCD device comprises a plurality of pixel electrodes formed on a first substrate, a plurality of first common electrodes formed on the first substrate including the pixel electrodes, and a plurality of second common electrodes formed on a second substrate bonded to the first substrate by interposing a liquid crystal layer in between; and wherein driving the LCD device in both the FFS mode and the VAC mode comprises driving the liquid crystal layer by a vertical electric field formed between the first common electrodes and the second common electrodes when driving the LCD device in the VAC mode.