Touch sensor and image display device including the same

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.