Touch sensor and image display device including the same

1. A touch sensor comprising:

a first electrode layer comprising a first main electrode and a first auxiliary electrode formed to be spaced apart from the first main electrode;

a second electrode layer comprising a second main electrode and a second auxiliary electrode formed to be spaced apart from the second main electrode; and

an insulating layer positioned between the first electrode layer and the second electrode layer and provided with a contact hole,

wherein one or more of the first electrode layer and the second electrode layer have a line width of an electrode pattern region corresponding to the contact hole larger than the contact hole,

wherein a critical dimension of the contact hole is 25 to 55 μm in a direction of the line width of the electrode pattern region corresponding to the contact hole,

wherein the critical dimension of the contact hole refers to a maximum value measured in the direction of the line width of the electrode pattern region corresponding to the contact hole, and

wherein the touch sensor does not comprise a bridge electrode.

2. The touch sensor of claim 1 , wherein a line width of an electrode pattern region not corresponding to the contact hole is smaller than or equal to the contact hole.

3. The touch sensor of claim 1 , wherein the line width of the electrode pattern region corresponding to the contact hole is 10 to 30 μm larger than the contact hole.

4. The touch sensor of claim 1 , wherein the line width of the electrode pattern region corresponding to the contact hole is 35 to 85 μm.

5. The touch sensor of claim 1 , wherein the contact hole is to electrically connect

at least one of a first main electrode and a second auxiliary electrode opposite thereto; and

a second main electrode and a first auxiliary electrode opposite thereto.

6. The touch sensor of claim 1 ,

wherein the first main electrode comprises: a first main electrode unit pattern integrally connected by a first main electrode connection part,

wherein the first auxiliary electrode comprises: a first auxiliary electrode unit pattern integrally connected by a first auxiliary electrode connection part,

wherein the second main electrode comprises: a second main electrode unit pattern integrally connected by a second main electrode connection part, and

wherein the second auxiliary electrode comprises: a second auxiliary electrode unit pattern integrally connected by a second auxiliary electrode connection part.

7. The touch sensor of claim 6 , wherein the contact hole is formed on at least one of

a point where the first main electrode connection part and the second auxiliary electrode connection part opposite thereto intersect in a planar direction; and

a point where the second main electrode connection part and the first auxiliary electrode connection part opposite thereto intersect in the planar direction.

8. The touch sensor of claim 6 ,

wherein the first main electrode unit pattern overlaps each of second spheres defined by a plurality of adjacent second auxiliary electrode unit patterns in a planar direction,

wherein the first auxiliary electrode unit pattern overlaps each of second holes defined by a plurality of adjacent second main electrode unit patterns in the planar direction,

wherein the second main electrode unit pattern overlaps each of first spheres defined by a plurality of adjacent first auxiliary electrode unit patterns in the planar direction, and

wherein the second auxiliary electrode unit pattern overlaps each of first holes defined by a plurality of adjacent first main electrode unit patterns in the planar direction.

9. The touch sensor of claim 1 , wherein the first electrode layer and the second electrode layer comprise: a mesh-shaped pattern.

10. The touch sensor of claim 1 ,

wherein the first main electrode comprises: a first connection part connecting the first main electrode in a row direction, and

wherein the second main electrode comprises: a second connection part connecting the second main electrode in a column direction.

11. The touch sensor of claim 1 ,

wherein the first electrode layer comprises: a first dummy electrode formed to be spaced apart from the first main electrode and the first auxiliary electrode, and

wherein the second electrode layer comprises: a second dummy electrode formed to be spaced apart from the second main electrode and the second auxiliary electrode.

12. The touch sensor of claim 11 ,

wherein the first dummy electrode comprises: a first dummy electrode unit pattern, and

wherein the second dummy electrode comprises: a second dummy electrode unit pattern.

13. The touch sensor of claim 12 ,

wherein the first dummy electrode unit pattern overlaps each of second spaces defined by a plurality of adjacent second dummy electrode unit patterns in a planar direction, and

wherein the second dummy electrode unit pattern overlaps each of first spaces defined by a plurality of adjacent first dummy electrode unit patterns in the planar direction.

14. An image display device comprising:

a display panel; and

a touch sensor of claim 1 stacked on the display panel.