Touch sensor including various sensing electrodes of different sizes and display device including the touch sensor

A touch sensor comprising:

• first touch sensor columns extending in a first direction, the first touch sensor columns comprising first touch electrodes, each of the first touch electrodes comprising sub-touch electrodes in a sensing region;
• second touch sensor columns comprising second touch electrodes in the sensing region, the second touch sensor columns being alternately arranged with the first touch sensor columns;
• and
• a pad unit disposed in a non-sensing region adjacent to the sensing region,
• wherein:
• each first touch electrode comprises a group of i (i being a natural number of 2 or more) sub-touch electrodes sequentially arranged in the first direction;
• each sub-touch electrode of a group is electrically connected to a sub-touch electrode of another group through a first sensing line among first sensing lines, the group being adjacent to the another group along the first direction;
• and
• the pad unit is electrically connected to each of the first sensing lines and the second sensing lines.