Touch Panel and Display Device Including the Same

A display device, comprising:

• a display panel;
• and
• a touch panel disposed above or below the display panel, the touch panel comprising:
• an electroactive layer;
• a plurality of driving electrodes on one side of the electroactive layer, the driving electrodes configured to transmit a driving signal;
• a plurality of first sensing electrodes disposed on another side of the electroactive layer, the first sensing electrodes configured to transmit voltage signals generated responsive to deformation of the electroactive layer;
• and
• a plurality of second sensing electrodes disposed on the electroactive layer, the second sensing electrodes spaced apart from the plurality of first sensing electrodes the plurality of driving electrodes, the second sensing electrodes configured to transmit capacitance signals indicating a change in capacitance between the driving electrodes and the second sensing electrodes.

A method of operating a touch panel comprising:

• providing a driving signal through a plurality of driving electrodes disposed on one side of an electroactive layer;
• transmitting voltage signals through a plurality of first sensing electrodes on another side of the electroactive layer, the voltage signals indicating a deformation of the electroactive layer;
• and
• transmitting capacitance signals through a plurality of second sensing electrodes at the other side the electroactive layer, the second sensing electrodes spaced apart from the plurality of first sensing electrodes and the plurality of driving electrodes, the capacitance signals indicating a change in capacitance between the plurality of driving electrodes and the plurality of second sensing electrodes.