Touch device and driving method the same

A method of driving a touch device, the method comprising:

• receiving a plurality of first output signals from a plurality of first traces connected to first ends of a plurality of first touch electrodes;
• receiving a plurality of second output signals from a plurality of second traces connected to second ends of a plurality of second touch electrodes;
• identifying at least one first output signal of the plurality of first output signals and at least one second output signal of the plurality of second output signals into two groups;
• approximating each of the two groups by an n-th order function, wherein n is a positive number;
• correcting the plurality of first output signals and/or the plurality of second output signals based on result values of the n-th order functions;
• and
• determining a touch position based on the plurality of corrected first output signals and/or the corrected second output signals.

A touch device comprising:

• a touch sensor including a plurality of first touch electrodes connected to first traces extending in a first direction and a plurality of second touch electrodes connected to second traces extending in a second direction opposite to the first direction;
• and
• a touch controller configured to detect a position of a stylus pen based on output signals received from the first and second traces,
• wherein a first induced current is generated in the plurality of first touch electrodes in a direction, and a second induced current is generated in the plurality of second touch electrodes in the direction, and the output signals from the plurality of first touch electrodes and output signals from the plurality of second touch electrodes have different signs.