Touch display device capable of selectively changing characteristic of touch driving signal

A touch display device comprising:

• a display panel including a plurality of data lines, a plurality of gate lines, a plurality of touch lines, and a plurality of touch electrodes;
• a data driving circuit configured to apply data voltages to the plurality of data lines;
• a gate driving circuit configured to apply a gate driving signal to the plurality of gate lines;
• and
• a touch driving circuit configured to apply a touch driving signal to the plurality of touch electrodes via the plurality of touch lines,
• wherein a pulse period of the touch driving signal comprises a first unit period where a voltage is configured to be varied from a first voltage level to a second voltage level, a second unit period where the voltage is configured to be maintained at the second voltage level, a third unit period where the voltage is configured to be varied from the second voltage level to the first voltage level, and a fourth unit period where the voltage is configured to be maintained at the first voltage level,
• wherein a waveform of the touch driving signal is configured to be selected based on a first setting value of the touch display device, and
• wherein a duration of time of the second unit period of the touch driving signal is configured to be varied based on a second setting value of the touch display device, the second setting value based on one or more of a driving time, a balance of battery, an internal or external temperature, an internal noise signal or external noise signal, or a touch sensing method of the touch display device.