Display device

A display device comprising:

• a display panel;
• and
• a touch panel built in the display panel, wherein the touch panel includes:
• a plurality of scanning electrodes formed on the display panel;
• a plurality of detection electrodes formed on the display panel and crossing the plurality of scanning electrodes;
• a driving-signal supplying unit configured to input a driving signal to the scanning electrodes when a touch position detection is performed;
• a detecting unit configured to acquire detection signals from the detection electrodes when the driving signal is input to the scanning electrodes from the driving-signal supplying unit;
• and
• a sensitivity correcting unit configured to correct sensitivity of the touch panel, and
• the sensitivity correcting unit includes:
• a difference acquiring unit configured to acquire a signal difference (S1−S2) between a detection signal S1 acquired by the detection electrodes when a driving signal V1 is input to the scanning electrodes from the driving-signal supplying unit and a detection signal S2 (S1>S2) acquired by the detection electrodes when a driving signal V2 (V1>V2) different from the driving signal V1 is input to the scanning electrodes from the driving-signal supplying unit;
• and
• a parameter changing unit configured to change parameters of at least one of the driving-signal supplying unit and the detecting unit when the signal difference (S1−S2) is equal to or smaller than a predetermined threshold D.