In-plane switching mode liquid crystal display device with adjustable viewing angle and method of fabricating the same

A method of fabricating an in-plane switching mode liquid crystal display device, comprising:

• forming gate lines and data lines intersecting each other on a first substrate and defining red, green, and blue sub-pixels, and viewing angle controlling sub-pixels;
• forming transistors on the intersections of the gate lines and the data lines;
• forming first common electrodes parallel to the data lines and first pixel electrodes alternately arranged with respect to the first common electrodes at the red, green, and blue sub-pixels of the first substrate;
• forming second pixel electrodes at the viewing angle controlling sub-pixels of the first substrate;
• forming second common electrodes at the viewing angle controlling sub-pixels of a Second substrate corresponding to the second pixel electrode;
• and
• forming 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.

A liquid crystal display device, comprising:

• red, green, and blue sub-pixels having first pixel electrodes and first common electrodes alternately disposed on a first substrate;
• viewing angle controlling sub-pixels having second pixel electrodes on the first substrate and second common electrodes on a second substrate;
• 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 are driven in a wide viewing angle mode without applying a voltage, and the viewing angle controlling sub-pixels are driven in a narrow viewing angle mode with applying the voltage.

A liquid crystal display device, comprising:

• first and second substrates facing each other;
• gate lines and data lines intersecting each other on the first substrate and defining at least four sub-pixels of first to fourth sub-pixels within a unit pixel;
• 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 first to third sub-pixels of the first substrate;
• second pixel electrodes at the fourth sub-pixel where the first pixel electrodes and first common electrodes are not disposed, the fourth sub-pixel being operated in a wide viewing angle mode during an off-state and in a narrow viewing angle mode during an on-state;
• second common electrodes at the fourth sub-pixel 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 fourth sub-pixels are driven by a vertical electric field, and wherein the first, second, and third sub-pixels are driven by a horizontal electric field.