Patent ID: 7924375

Claim:
An in-plane switching mode liquid crystal display device comprising: a first substrate and a second substrate; gate lines and data lines intersecting each other on the first substrate and defining red, green, blue sub-pixels, and viewing angle controlling sub-pixels; thin film transistors at the intersections of the gate lines and the data lines; first pixel electrodes and first common electrodes spaced apart from each other and alternately disposed at the red, green, and blue sub-pixels of the first substrate; second pixel electrodes at the viewing angle controlling sub-pixels of the first substrate; second common electrodes at the viewing angle controlling sub-pixels of the second substrate corresponding to the second pixel electrodes; and a liquid crystal layer between the first substrate and the second substrate, wherein the viewing angle controlling sub-pixels are driven by a vertical electric field, wherein the red, green, and blue sub-pixels are driven by a horizontal electric field, and wherein the viewing angle controlling sub-pixels becomes an off-state in a wide viewing angle mode and an on-state in a narrow viewing angel mode.