Touch display panel and touch display device
Example embodiments of the present disclosure relate to a touch display device. In one example, a touch display device includes a substrate including an active area in which multiple subpixels are arranged and a nonactive area positioned outside the active area; wherein each of the multiple subpixels includes a first electrode, an organic light emitting layer and a second electrode on the organic light emitting layer; an encapsulation layer arranged on the second electrode; a plurality of touch electrodes and a plurality of touch routing wires arranged on the encapsulation layer; a touch sensing circuit configured to drive the plurality of touch electrodes through the plurality of touch routing wires; multiple connection patterns arranged on the encapsulation layer in the active area so as to electrically connect at least a portion of the plurality of touch electrodes to each other; multiple first compensation patterns arranged in the nonactive area and electrically connected to the plurality of touch routing wires; and multiple second compensation patterns arranged on the encapsulation layer corresponding to the multiple first compensation patterns.
1. A touch display device comprising:
a substrate including an active area in which multiple subpixels are arranged and a non-active area positioned outside the active area;
wherein each of the multiple subpixels includes a first electrode, an organic light emitting layer and a second electrode on the organic light emitting layer;
an encapsulation layer arranged on the second electrode;
a plurality of touch electrodes and a plurality of touch routing wires arranged on the encapsulation layer;
a touch sensing circuit configured to drive the plurality of touch electrodes through the plurality of touch routing wires;
multiple connection patterns arranged on the encapsulation layer in the active area so as to electrically connect at least a portion of the plurality of touch electrodes to each other;
multiple first compensation patterns arranged in the non-active area and electrically connected to the plurality of touch routing wires; and
multiple second compensation patterns arranged on the encapsulation layer corresponding to the multiple first compensation patterns.
2. The touch display device of claim 1 , wherein a ground voltage is applied to the multiple second compensation patterns.
3. The touch display device of claim 1 , wherein a same voltage is applied to the second electrode and the multiple second compensation patterns.
4. The touch display device of claim 1 , wherein the multiple second compensation patterns are electrically connected to the second electrode via at least one hole provided in the encapsulation layer.
5. The touch display device of claim 1 , wherein the multiple second compensation patterns are arranged on a same layer as the multiple connection patterns.
6. The touch display device of claim 1 , further comprising:
at least one touch insulating film between the multiple connection patterns and the plurality of touch electrodes.
7. The touch display device of claim 6 , wherein the at least one touch insulating film comprises:
a first touch insulating film between the multiple connection patterns and the multiple second compensation patterns; and
a second touch insulating film between the multiple second compensation patterns and the multiple first compensation patterns.
8. The touch display device of claim 1 , wherein an area of each of the multiple first compensation patterns, on each side of the substrate, is inversely proportional to a length of a corresponding one of the plurality of touch routing wires.
9. The touch display device of claim 1 , wherein at least one of the plurality of touch routing wires has a first part arranged in a first area closer to the touch sensing circuit and a second part arranged in a second area further from the touch sensing circuit, a width of the first part being smaller than a width of the second part.
10. The touch display device of claim 1 , wherein the touch sensing circuit is configured to detect a touch based on a signal corresponding to a difference between a first touch sensing signal received through a first touch routing wire and a second touch sensing signal received through a second touch routing wire from among the plurality of touch routing wires.
11. The touch display device of claim 1 , wherein the plurality of touch routing wires are arranged along a sloped surface of the encapsulation layer and are connected to a touch pad portion.
12. The touch display device of claim 1 , further comprising:
a dam arranged on the non-active area, wherein the plurality of touch routing wires cross over the dam.
13. The touch display device of claim 1 , further comprising:
at least one noise reduction electrode arranged on same layer as the first electrode, wherein the at least one noise reduction electrode is spaced apart from the first electrode.
14. The touch display device of claim 13 , wherein a same voltage is applied to the at least one noise reduction electrode and the second electrode.
15. The touch display device of claim 13 , wherein the at least one noise reduction electrode extends from the active area to the non-active area in the same layer as the first electrode.
16. The touch display device of claim 15 , wherein the at least one noise reduction electrode is electrically connected to the second electrode.
17. A touch display device comprising:
a substrate including an active area in which multiple subpixels are arranged and a non-active area, each of the multiple subpixels including a first electrode, an organic light emitting layer and a second electrode on the organic light emitting layer;
an encapsulation layer arranged on the second electrode;
a plurality of touch electrodes and a plurality of touch routing wires arranged on the encapsulation layer; and
multiple compensation patterns configured to equalize first capacitance and second capacitance, the first capacitance being formed between the plurality of touch electrodes and the second electrode in the active area, the second capacitance being formed between the plurality of touch routing wires and the second electrode in the non-active area.
18. The touch display device of claim 17 , wherein a same voltage is applied to the second electrode and the multiple second compensation patterns to equalize the first capacitance and the second capacitance.
19. The touch display device of claim 17 , further comprising:
at least one noise reduction electrode arranged on same layer as the first electrode, wherein the at least one noise reduction electrode is spaced apart from the first electrode and is configured to reduce noise associated with the second electrode in the active area.
20. The touch display device of claim 19 , wherein a same voltage is applied to the at least one noise reduction electrode and the second electrode.
21. The touch display device of claim 19 , wherein the at least one noise reduction electrode extends from the active area to the non-active area in the same layer as the first electrode.
22. The touch display device of claim 21 , wherein the at least one noise reduction electrode is electrically connected to the second electrode.
23. The touch display device of claim 17 , wherein an area of each of the multiple compensation patterns, on each side of the substrate, is inversely proportional to a length of a corresponding one of the plurality of touch routing wires.
24. The touch display device of claim 17 , wherein the plurality of touch routing wires are arranged along a sloped surface of the encapsulation layer and are connected to a touch pad portion.