Display panel and manufacturing method thereof

A manufacturing method of a display panel, comprising:

• forming a first metal layer on a first substrate, wherein the first metal layer comprises a scan line and a first common electrode;
• forming a first insulation layer on the first metal layer;
• forming a second metal layer on the first insulation layer, wherein the second metal layer comprises a data line, a drain and a source of an active element, and a first sub-electrode of a pixel electrode, and the first sub-electrode overlaps the first common electrode;
• forming a second insulation layer on the second metal layer;
• forming a first opening hole in the second insulation layer, wherein the first opening hole exposes a part of the first sub-electrode;
• forming a first transparent conductive layer on the second insulation layer, wherein the first transparent conductive layer comprises a second common electrode and a second sub-electrode of the pixel electrode, the second common electrode overlaps the first sub-electrode, and the second sub-electrode is electrically connected to the first sub-electrode through the first opening hole;
• forming a third insulation layer on the first transparent conductive layer;
• forming a second opening hole in the third insulation layer, wherein the second opening hole exposes at least a part of the second sub-electrode;
• and
• forming a third metal layer on the third insulation layer, wherein the third metal layer comprises a third sub-electrode of the pixel electrode, the second common electrode overlaps the third sub-electrode, and the third sub-electrode is electrically connected to the second sub-electrode through the second opening hole.