Patent ID: 7728941
Filing Date: 2010-06-01
Classification: G02F,G09G

Abstract:
1. A liquid crystal display device, comprising: gate lines and data lines crossing each other to define RGBW sub-pixels on a first substrate; a thin film transistor formed at each crossing of the gate and data lines; a first common electrode formed in each region of the RGBW sub-pixels; a pixel electrode connected to the thin film transistor and insulated from the first common electrode in each region of the RGBW sub-pixels, the pixel electrode having at least one slit; a second substrate attached to the first substrate, wherein the first and second substrates face each other with a liquid crystal layer interposed therebetween; and a second common electrode formed on the second substrate in only each W sub-pixel for controlling viewing angle, wherein the W sub-pixel is driven in the same electric field as a first electric field of the RGB sub-pixels in a wide viewing angle mode, while the W sub-pixel is driven in a second electric field different from the first electric field of the RGB sub-pixels in a narrow viewing angle mode.