Touch input device

A touch input device comprising:

• a touch sensor;
• and
• a control unit which controls the touch sensor,
• wherein the touch sensor comprises a plurality of first electrodes and a plurality of second electrodes,
• wherein each of the first electrodes are disposed along a first direction,
• wherein each of the second electrodes are configured to:
• be disposed along a second direction different from the first direction, and
• include a 2a electrode pattern disposed immediately adjacent to the first electrode and a 2b electrode pattern disposed not immediately adjacent to the first electrode but spaced apart by a distance,
• wherein at least two of the 2a electrode patterns of the second electrode and at least two of the 2b electrode patterns of the second electrode are alternately disposed one by one along the second direction,
• wherein the control unit is configured to control such that:
• different driving signals to be applied simultaneously to at least two second electrodes among the plurality of second electrodes;
• a driving signal to be applied to the 2b electrode pattern;
• and
• the driving signal is a signal of a phase which is reversed by 180 degrees from a driving signal applied to the 2a electrode pattern, and
• wherein the control unit is configured to detect a touch position of an object located on the touch sensor based on signals received from the plurality of first electrodes.