Liquid crystal display device and driving method thereof

A liquid crystal display device comprising:

• a pixel for displaying an image including a plurality of subpixels, the subpixels of the pixel including:
• data displaying subpixels each including a corresponding liquid crystal layer of a vertical alignment mode using negative liquid crystals interposed between a corresponding first pixel electrode, the data displaying subpixels for receiving red, green, and blue data voltages to display an image, and a common electrode to which a common voltage is applied;
• a viewing angle controlling subpixel including a corresponding liquid crystal layer of the vertical alignment mode driven in response to voltages applied to the common electrode, a side electrode separated from the common electrode, and a second pixel electrode;
• and
• a control line electrically connecting to side electrodes of adjacent viewing angle controlling subpixels, the control line avoiding the data displaying subpixels, and each side electrode comprising a pair of side electrode sections facing each other in each viewing angle controlling subpixel with the common electrode interposed between the side electrode sections,
• each of the subpixels of the pixel further including a rib distorting an electric field applied to the corresponding liquid crystal layer, the viewing angle controlling subpixel substantially directly passing light from the data displaying subpixels when an equivalent voltage to the common voltage to the common electrode is applied to the side electrode during a wide viewing angle mode of the liquid crystal display device, and delaying a phase of the light from the data displaying subpixels when a voltage having a voltage difference from the common voltage applied to the common electrode is applied to the side electrode during a narrow viewing angle mode of the liquid crystal display device,
• wherein the side electrode is arranged on the same substrate as the common electrode.