Liquid crystal display device

1. A liquid crystal display device comprising:

drain lines extended in a first direction and arranged in parallel in a second direction;

gate lines extended in the second direction and arranged in parallel in the first direction;

a common electrode, formed to be planar, into which a common signal which is a reference is input;

a linear pixel electrode disposed on a liquid crystal layer side across an insulating film and disposed superimposed over the common electrode; and

a thin film transistor which supplies a video signal from the drain lines to the pixel electrode in synchronism with a scan signal from the gate lines, wherein

the drain lines are such that one drain line is formed for every two pixels adjacent to each other within the same pixel row,

the gate lines are formed of a first gate line connected to one of the two pixels connected to the same drain line within the same pixel row and a second gate line connected to the other pixel,

the pixel electrode is formed of a first linear electrode inclined in a plus direction to form a first acute angle to the first direction, and a second linear electrode inclined in a minus direction to form a second acute angle to the first direction, in a region in which the pixel electrode is superimposed over the common electrode, and

each pixel includes the first and second gate lines and the thin film transistor formed in a region at a center of the pixel along the first direction between the region of the first linear electrode and the region of the second linear electrode,

a first extension portion is extended from the drain line in the second direction and formed between adjacent pixels,

a second extension portion different from the first extension portion is extended from the drain line in the second direction and formed between adjacent pixels, and

the first extension portion and the second extension portion are disposed opposed to each other in the second direction with a gap.

2. The liquid crystal display device according to claim 1 , wherein

the pixel electrode is such that, in the upper layer of the insulating film, the region of the first linear electrode and the region of the second linear electrode are disposed crossing the thin film transistor.

3. The liquid crystal display device according to claim 1 , wherein

the planar pixel electrode is formed in a region in which the pixel electrode is superimposed over the first and second gate lines and the thin film transistor.

4. The liquid crystal display device according to claim 1 , wherein

the pixels are formed displaced by half a pixel width in the second direction for each pixel row.

5. The liquid crystal display device according to claim 1 , wherein the first gate line and the second gate line are not formed between adjacent pixels in the first direction.

6. The liquid crystal display device according to claim 5 , wherein the common electrode is configured to be formed independently for each pixel and is not formed in the central region of the pixel in which the thin film transistor, the first gate line and the second gate line are formed.

7. The liquid crystal display device according to claim 6 , wherein no slit is formed in the central region of the pixel in which the thin film transistor, the first gate line and the second gate line are formed.

8. The liquid crystal display device according to claim 7 , wherein the pixels are arranged in zigzag alignment.