Touch input device

A touch input device comprising:

• a sensor unit;
• and
• a control unit electrically connected to the sensor unit,
• wherein the sensor unit comprises:
• a plurality of first patterns each arranged along a first direction;
• a plurality of second patterns each arranged along the first direction and adjacent to the first patterns;
• a plurality of third patterns each arranged along a second direction intersecting the first direction;
• and
• a plurality of fourth patterns each arranged along the second direction and adjacent to the third patterns,
• wherein each of the first pattern includes a first-a pattern and a first-b pattern alternately arranged along the first direction,
• wherein the first-a patterns of the plurality of first patterns arranged along the first direction being electrically connected to each other, the first-b patterns of the plurality of first patterns arranged along the first direction being electrically connected to each other,
• wherein one end of each of the plurality of first patterns is electrically floated, and the other end of each of the plurality of first patterns is electrically connected to the control unit,
• wherein one end of each of the plurality of third patterns is electrically floated, and the other end of each of the plurality of third patterns is electrically connected to the control unit,
• wherein one ends of the plurality of second patterns are electrically connected to each other, and at least two of the other ends are electrically connected to each other and electrically connected to the control unit, and
• wherein at least some of the fourth patterns among the plurality of fourth patterns have one ends electrically floating, and the other ends are electrically connected to each other.