Tft array substrate and manufacturing method thereof and liquid crystal display device

A liquid crystal display panel comprising a TFT array substrate having an array of pixels arranges in rows and columns, wherein the TFT array substrate comprises:

• a substrate;
• a common electrode layer arranged on the substrate;
• a first insulating layer arranged on the common electrode layer;
• an array of pixel electrodes arranged on the first insulating layer;
• a plurality of via holes in the first insulating layer and between at least some of adjacent pixels;
• and
• a plurality of common electrode lines between at least some of the rows and/or the columns of the pixels and electrically connected with the common electrode layer through the via holes.

A method of manufacturing a TFT array substrate having an array of pixels arranged in rows and columns, the method comprising:

• providing a substrate;
• forming a semiconductor layer, a gate, a source, a drain of a TFT, gate lines and data lines on the substrate;
• forming an organic layer on the semiconductor layer, the gate, the source, the drain of the TFT, the gate lines and the data lines;
• forming a plurality of first via holes on the source and the drain;
• forming a common electrode layer on the organic layer;
• forming a first insulating layer on the common electrode layer;
• forming a plurality of second via holes in the first insulating layer at positions corresponding to the first via holes
• forming a plurality of third via holes in the first insulating layer at an area free of pixels;
• forming a plurality of pixel electrodes on the first insulating layer through the second via holes;
• and
• forming common electrode lines between at least some of the rows and/or the columns of the pixels through the third via holes.