Touch sensor

A touch sensor, comprising:

• a display panel that includes a plurality of pixel electrodes each provided in a corresponding one of a plurality of pixels, and a common electrode shared by the plurality of pixels;
• and
• a touch panel that detects a position of at least either a finger or a pen,
• wherein the display panel and the touch panel are superimposed on each other in a vertical direction perpendicular to the display panel, and
• the common electrode includes a conductor-area-reduction portion that reduces an area of the common electrode, wherein,
• the conductor-area-reduction portion includes a plurality of holes formed in the common electrode;
• the plurality of holes collectively function as the conductor-area-reduction portion;
• and
• the plurality of holes include H-shaped holes each consisting of two elongated sections extending in a first horizontal direction and one elongated section extending between the two elongated sections in a second horizontal direction perpendicular to the first horizontal direction, the first and second horizontal directions being in parallel with the display panel.