LIQUID CRYSTAL DISPLAY DEVICE
There is provided a liquid crystal display device using line inversion driving for inverting the polarity of gray scale voltage every N lines. The display device includes: drain lines extending in a first direction and arranged in parallel in a second direction; gate lines extending in the second direction and arranged in parallel in the first direction; a pixel electrode formed in a pixel area; and a common electrode disposed opposite to the pixel electrode. An image signal after polarity inversion is input to the pixels adjacent to each other in the first direction in every N-th line. A first pixel electrode is provided in pixels at least in one line to which the image signal immediately after polarity inversion is input. A second pixel electrode is provided in the other pixels. The area of the first pixel electrode is larger than the second pixel electrode to prevent display quality degradation.
1 . A liquid crystal display device comprising:
drain lines extending in a first direction and arranged in parallel in a second direction;
gate lines extending in the second direction and arranged in parallel in the first direction;
a pixel electrode formed in the area of a pixel surrounded by the drain lines and the gate lines; and
a plate-like common electrode disposed opposite to the pixel electrode at least in each pixel,
wherein an image signal after inversion of the polarity of the gray scale voltage to be output to each pixel, is supplied the pixels adjacent to each other in the second direction,
wherein an image signal after inversion of the polarity of the gray scale voltage to be output to each pixel, is supplied to the pixels adjacent to each other in the first direction in every N-th (N≧2) line,
wherein the liquid crystal display device further includes a first electrode and a second electrode,
wherein, of the pixels adjacent to each other in the first direction, the first pixel electrode is provided in pixels at least in one line to which the image signal is input immediately after inversion of the polarity of the gray scale voltage,
wherein the second pixel electrode is different from the first pixel electrode in the electrode area, and
wherein the area of the first pixel electrode is larger than the area of the second pixel electrode.
2 . The liquid crystal display device according to claim 1 , wherein the first and second pixel electrodes are linear electrodes formed so as to overlap the common electrode through a capacitor insulating film formed on the upper layer of the common electrode in the area of each pixel.
3 . The liquid crystal display device according to claim 2 , wherein the first and second pixel electrodes include a plurality of linear electrodes as well as slits with the ends closed.
4 . The liquid crystal display device according to claim 2 , wherein the number of linear electrodes of the first pixel electrode is greater than the number of linear electrodes of the second pixel electrode.
5 . The liquid crystal display device according to claim 2 , wherein the electrode width of the linear electrodes of the first pixel electrode is greater than the electrode width of the linear electrodes of the second pixel electrode.
6 . The liquid crystal display device according to claim 2 , wherein the distance between the linear electrodes of the first pixel electrode is greater than the distance between the linear electrodes of the second pixel electrode.
7 . The liquid crystal display device according to claim 2 , wherein the linear electrodes of the first pixel electrode include at least a first linear electrode with a first electrode width, and at least a second linear electrode with a second electrode width.
8 . The liquid crystal display device according to claim 2 , wherein the linear electrodes of the first pixel electrode include at least linear electrodes disposed at a first electrode distance, and at least linear electrodes disposed at a second electrode distance.