Pixel structure with multilayered common electrodes and touch panel thereof
A pixel structure includes a scan line, a data line, a switching element, a planarization layer, a first common electrode, a common line, a first insulating layer, a pixel electrode, a second insulating layer, and a second common electrode. The switching element includes a source and a drain. The common line is located on the planarization layer and directly connected with the first common electrode. The planarization layer is located on the scan line, the data line, and the switching element. The pixel electrode is electrically connected with the drain through a first contact hole, wherein the first contact hole penetrates through the planarization layer and the first insulating layer. The second common electrode is electrically connected with the first common electrode through a second contact hole, wherein the second contact hole penetrates through the first insulating layer and the second insulating layer. A touch panel is also provided.
1. A pixel structure, comprising:
a scan line and a data line;
a switching element electrically connected to the scan line and the data line, wherein the switching element includes a source and a drain;
a planarization layer disposed on the scan line, the data line and the switching element;
a first common electrode disposed on the planarization layer, wherein the first common electrode contacts a corner of a connecting portion, and the connecting portion overlaps a portion of the data line and a portion of the scan line;
a common line disposed on the planarization layer and directly connected with the first common electrode;
a first insulating layer disposed on the first common electrode and the common line;
a pixel electrode disposed on the first insulating layer and electrically connected to the drain through a first contact hole, wherein the first contact hole penetrates the planarization layer and the first insulating layer;
a second insulating layer disposed on the pixel electrode; and
a second common electrode disposed on the second insulating layer and electrically connected to the first common electrode through a second contact hole, wherein the second common electrode has a plurality of slits, and the slits overlap the pixel electrode and the first common electrode, and the second contact hole penetrates the first insulating layer and the second insulating layer.
2. The pixel structure of claim 1 , wherein a line width of the common line is W, and a width of a portion of the common line covered by the first common electrode is W 1 , and 0<W 1 <W.
3. The pixel structure of claim 1 , wherein the second common electrode overlaps the data line.
4. The pixel structure of claim 1 , wherein the second contact hole overlaps the data line.
5. The pixel structure of claim 1 , wherein at least one of the common line and the first common electrode overlaps the data line.
6. The pixel structure of claim 1 , wherein the common line is electrically connected to the connecting portion through the first common electrode.
7. The pixel structure of claim 1 , wherein the second common electrode does not overlap with the first contact hole.
8. A touch panel, comprising:
a first pixel structure having the pixel structure of claim 1 ; and
a second pixel structure having the pixel structure of claim 1 , wherein the common line of the first pixel electrode and the common line of the second pixel electrode are separated from each other.
9. The touch panel of claim 8 , further comprising a third pixel structure having the pixel structure of claim 1 , wherein the third pixel structure is adjacent to the second pixel structure, and the common line of the third pixel structure is directly connected to the common line of the second pixel structure.
10. The touch panel of claim 9 , further comprising a connecting portion, wherein two corners of the connecting portion respectively connect the first common electrode of the second pixel structure and the first common electrode of the third pixel structure.
11. The pixel structure of claim 1 , wherein both the common line and the data line are extending substantially along a first direction.