Touch panel including an insulating substrate and display device for the same

A touch panel comprising:

• an insulating substrate;
• a plurality of touch drive electrodes arranged on the insulating substrate so as to be arrayed in a first direction, each of the plurality of touch drive electrodes extending in a second direction that intersects with the first direction;
• a plurality of touch detection electrodes arranged on the insulating substrate so as to be arrayed in the second direction, each of the plurality of touch detection electrodes extending in the first direction;
• and
• a dummy electrode that is arranged between adjacent ones of the plurality of touch detection electrodes, in which a slit extending substantially in the first direction is provided,
• wherein the dummy electrode is segmented by the slit into a plurality of electrode portions arrayed in the second direction,
• two adjacent ones of the plurality of electrode portions with the slit being interposed therebetween are divided at positions different in the first direction, and
• each piece of each electrode portion of the plurality of electrode portions, obtained by dividing the each electrode portion of the plurality of electrode portions, has a length of ¼ of a width in the first direction of each touch drive electrode of the plurality of touch drive electrodes, and two electrode portions of the plurality of electrode portions adjacent to each other with the slit being interposed therebetween are arranged so as to be shifted from each other by ¼ of a length in the first direction of each electrode portion of the plurality of electrode portions.