Touch Display Device, Method for Driving the Same, Driving Circuit, Data-Driving Circuit, and Gate-Driving Circuit

A touch display device comprising:

• a display panel including a first data line, a first gate line, a first touch signal line, and a first touch electrode;
• a gate-driving circuit configured to output a turn-on gate signal or a turn-off gate signal to the first gate line;
• a data-driving circuit configured to output a data signal to the first data line;
• and
• a touch-driving circuit configured to output a touch-driving signal to the first touch electrode via the first touch signal line for sensing a touch,
• wherein the touch-driving signal is a swinging signal having a first level voltage and a second level voltage,
• wherein the gate-driving circuit outputs a first gate signal having a fourth level voltage to the first gate line during the second level voltage period of the touch-driving signal, and
• wherein the fourth level voltage of the first gate signal is a combined voltage of a voltage of the turn-on gate signal and a voltage difference between the first level voltage and the second level voltage of the touch-driving signal, or the fourth level voltage of the first gate signal is a combined voltage of a voltage of the turn-off gate signal and the voltage difference between the first level voltage and the second level voltage of the touch-driving signal.

A touch display device comprising:

• a display panel including a first data line, a first touch signal line, and a first touch electrode;
• a data-driving circuit configured to output a data signal to the first data line;
• and
• a touch-driving circuit configured to output a touch-driving signal to the first touch electrode via the first touch signal line for sensing a touch, wherein the touch-driving signal is a swinging signal swinging with a predetermined amplitude,
• wherein the data-driving circuit is configured to output the data signal having a third level voltage to the first data line, and the third level voltage of the data signal is a combined voltage of an image data voltage and a voltage corresponding to the predetermined swinging amplitude of the touch-driving signal,
• wherein the data-driving circuit comprises:
• a digital-to-analog converter configured to output an analog voltage using gamma voltages;
• and
• an output buffer configured to output the data signal to the first data line based on the analog voltage, and
• wherein the gamma voltages swing with an amplitude of the touch-driving signal, and the data signal swings in accordance with the gamma voltages.