Disclosed is a touch detector which detects a touch on a touch sensor panel including a plurality of first electrodes, a plurality of second electrodes and a plurality of third electrodes. The touch detector includes: a driving signal supplier which applies a driving signal to the plurality of first electrodes; and a sensing unit which receives a first signal including information on a capacitance changing depending on the touch on a touch surface of the touch sensor panel from the plurality of second electrodes. The sensing unit detects a touch pressure and a touch position on the touch surface of the touch sensor panel.