Touch sensor and display device including the same

1. A display device, comprising:

a first substrate;

a plurality of light emitting elements disposed on the first substrate;

a second substrate disposed opposite the first substrate; and

a touch sensor disposed on the second substrate,

wherein the touch sensor includes a first touch conductive layer which is disposed on the second substrate and includes a first transparent conductive material and a first dummy electrode, a touch insulating layer disposed on the first touch conductive layer, and a second touch conductive layer which is disposed on the touch insulating layer and includes a second transparent conductive material,

wherein the first touch conductive layer includes a plurality of first sub-sensing electrodes arranged in a first direction, a connecting portion connecting the first sub-sensing electrodes adjacent to each other, and a plurality of second sub-sensing electrodes which are arranged in a second direction crossing the first direction and are spaced apart from the first sub-sensing electrodes and the connecting portion, and

wherein the second touch conductive layer includes a third sub-sensing electrode electrically connected to one of the first sub-sensing electrodes through a plurality of first contact holes passing through the touch insulating layer, and a fourth sub-sensing electrode which is electrically connected to one of the second sub-sensing electrodes through a plurality of second contact holes passing through the touch insulating layer so as to electrically connect the second sub-sensing electrodes adjacent to each other and is spaced apart from the third sub-sensing electrode,

wherein the limrth sub-sensing electrode at least partially overlaps the first dummy electrode.

2. The display device of claim 1 , wherein the third sub-sensing electrode at least partially overlaps the first sub-sensing electrode, and the fourth sub-sensing electrode at least partially overlaps the second sub-sensing electrode.

3. The display device of claim 2 , wherein the fourth sub-sensing electrode extends primarily in the second direction, at least partially overlaps the connecting portion in a thickness direction, and is electrically insulated from the connecting portion.

4. The display device of claim 3 , wherein:

the first dummy electrode is disposed between the first sub-sensing electrode and the second sub-sensing electrode which are adjacent to each other; and

the first dummy electrode is a floating electrode which is spaced apart from the first sub-sensing electrode adjacent thereto with a space therebetween and spaced apart from the second sub-sensing electrode adjacent thereto with a space therebetween.

5. The display device of claim 4 , wherein:

the fourth sub-sensing electrode at least partially covers the separation space between the first dummy electrode and the second sub-sensing electrode; and

the third sub-sensing electrode at least partially covers the space between the first dummy electrode and the first sub-sensing electrode and of at least partially overlaps the first dummy electrode.

6. The display device of claim 4 , wherein:

the second touch conductive layer further includes a second dummy electrode disposed between the third sub-sensing electrode and the fourth sub-sensing electrode which are adjacent to each other: and

the second dummy electrode is spaced apart from the third sub-sensing electrode adjacent thereto with a space therebetween and spaced apart from the fourth sub-sensing electrode adjacent thereto with a space therebetween.

7. The display device of claim 3 , wherein:

the touch sensor further includes a third touch conductive layer disposed between the first touch conductive layer and the touch insulating layer; and

the third touch conductive layer includes an opaque conductive material.

8. The display device of claim 7 , wherein:

the touch sensor further includes a plurality of touch wires connected to the plurality of first sub-sensing electrodes or the plurality of second sub-sensing electrodes;

the plurality of touch wires includes a first wire portion and a second wire portion disposed on the first wire portion;

the first touch conductive layer further includes the first wire portion; and

the third touch conductive layer further includes the second wire portion.

9. The display device of claim 8 , wherein the second wire portion is disposed directly o the first wire portion and is electrically connected to the first wire portion.

10. The display device of claim 8 , wherein the touch sensor further includes a cap pattern covering the plurality of touch wires, and the second touch conductive layer further includes the cap pattern.

11. The display device of claim 3 , wherein the first transparent conductive material and the second transparent conductive material each include amorphous indium tin oxide.

12. The display device of claim 3 , wherein the first substrate includes a display substrate, the second substrate includes an encapsulation substrate sealing the plurality of light emitting elements, and the touch sensor is disposed directly on the encapsulation substrate.

13. The display device of claim 3 , wherein each sub-sensing electrode of the first sub-sensing electrodes, the second sub-sensing electrodes, the third sub-sensing electrode, and the fourth sub-sensing electrodes have a planar shape.

14. The display device of claim 3 , further comprising a polarizing film disposed on the touch sensor and an adhering member disposed between the polarizing film and the touch sensor,

wherein the adhering member directly contacts the second touch conductive layer.

15. The display device of claim 3 , wherein

planar profiles of third sub-sensing electrode and the first sub-sensing electrode, which overlaps the third sub-sensing electrode in the thickness direction, are the same; and

planar profiles of the fourth sub-sensing electrode and the second sub-sensing electrode, which overlaps the fourth sub-sensine electrode in the thickness direction, are the same.

16. A display device, comprising:

a first substrate;

a plurality of light emittingelements disposed on the first substrate;

a second substrate disposed opposite the first substrate; and

a touch sensor disposed on the second substrate,

wherein the touch sensor includes a first touch conductive layer which is disposed on the second substrate and includes a first transparent conductive material, a touch insulating layer disposed on the first touch conductive layer, and a second touch conductive layer which is disposed on the touch insulating layer and includes a second transparent conductive material.

wherein the first touch conductive layer includes a plurality of first sub-sensim electrodes arranged in a first direction, a connecting portion connecting the first sub-sensing electrodes adjacent to each other, and a plurality of second sub-sensing electrodes which are arranged in a second direction crossing the first direction and are spaced apart from the first sub-sensing electrodes and, the connecting ting portion,

wherein the second touch conductive layer includes a third sub-sensing electrode electrically connected to one of the first sub-sensing electrodes through a plurality of first contact holes passing through the touch insulating layer, and a fourth sub-sensing electrode which is electrically connected to one of the second sub-sensing electrodes through a plurality of second contact holes passing through the touch insulating layer so as to electrically connect the second sub-sensing electrodes adjacent to each other and is spaced apart from the third sub-sensing electrode,

wherein the third sub-sensing electrode at least partially overlaps the first sub-sensing electrode, and the fourth sub -sensing electrode at least partially overlaps the second sub-sensing electrode,

wherein the first touch conductive layer further includes a first dummy electrode disposed between the first sub-sensing electrode and the second sub-sensing electrode which are adjacent to each other,

wherein the first dummy electrode is a floating electrode which is spaced apart from the first sub-sensing electrode adjacent thereto with a space therebetween and spaced apart from the second sub-sensing electrode adjacent thereto with a space therebetween,

wherein the second touch conductive layer further includes a second dummy electrode disposed between the third sub-sensing electrode and the fourth sub sensing electrode which are adjacent to each other,

wherein the second dummy electrode is spaced apart from the third sub-sensing electrode adjacent thereto with a space therebetween and spaced apart from the fourth sub-sensing electrode adjacent thereto with a space therebetween, and

wherein a width of the second dummy electrode is larger than a width of the first dummy electrode, and the second dummy electrode at least partially covers the space between the first dummy electrode and the second sub-sensing electrode and the space between the first dummy electrode and the first sub-sensing electrode.

17. The display device of claim 16 , wherein the second dummy electrode includes a plurality of dummy patterns separated from each other, and the first dummy electrode covers a space between the dummy patterns that are adjacent to each other.

18. A touch sensor, comprising:

a first touch conductive layer including a first transparent conductive material;

a touch insulating layer disposed on the first touch conductive layer; and

a second touch conductive layer disposed on the touch insulating layer and including a second transparent conductive material,

wherein the first touch conductive layer includes a plurality of first sub-sensing electrodes arranged in a first direction, a connecting portion configured to connect the first sub-sensing electrodes adjacent to each other, a plurality of second sub-sensing electrodes which are arranged in a second direction crossing the first direction and are spaced apart from the first sub-sensing electrodes and the connecting portion, and a first dummy electrode,

wherein the second touch conductive layer includes a third sub-sensing electrode electrically connected to one of the first sub-sensing electrodes through a plurality of first contact holes passing, through the touch insulating layer, and a fourth sub-sensing electrode which is electrically connected to one of the second sub-sensing electrodes through a plurality of second contact holes passing through the touch insulating layer electrically connecting the second sub-sensing electrodes adjacent to each other, and is spaced apart from the third sub-sensing electrode,

wherein the fourth sub-sensing electrode at least partially overlaps the first dummy electrode.

19. The touch sensor of claim 18 , wherein:

the third sub-sensing electrode at least partially overlaps the first sub-sensing electrode;

the tburth sub-sensing electrode at least partially overlaps the second sub-sensing electrode;

the fourth sub-sensing electrode extends primarily in the second direction; and

the fourth sub-sensing electrode at least partially overlaps the connecting portion in a thickness direction and is electrically insulated from the connecting portion.

20. The touch sensor of claim 18 , further comprising a third touch conductive layer disposed between the first touch conductive layer and the touch insulating layer, wherein:

the third touch conductive layer includes an opaque conductive material;

the touch sensor further includes a plurality of touch wires connected to the plurality of first sub-sensing electrode or the plurality of second sub-sensing electrode; and

the plurality of touch wires includes a first wire portion and a second wire portion disposed on the first wire portion, the first touch conductive layer further includes the first wire portion, and the third touch conductive layer further includes the second wire portion.