Touch display device, driving circuit and driving method thereof

A driving circuit of a touch display device comprising a first combined integrated circuit and a second combined integrated circuit providing data voltages, and the first combined integrated circuit and the second combined integrated circuit for providing at least one touch driving signal to the display panel and sensing a touch based on at least one touch sensing signal received in response to the at least one touch driving signal, the first combined integrated circuit comprises:

• an oscillator configured to generate a pulse signal of a predetermined frequency;
• a touch signal generator configured to generate a first clock signal and a first touch sensing control signal using the pulse signal;
• a touch detector configured to sense a touch based on the at least one first touch sensing signal provided from the display panel;
• an interface controller configured to output a result from the touch sensing;
• and
• a driving controller configured to control touch sensing operations of the touch detector and the interface controller according to the first clock signal and the first touch sensing control signal.

A method of driving a touch display device configured to switch between a first mode and a second mode that is different from the first mode and comprising a gate driving circuit providing gate signals to a display panel including a plurality of touch electrodes, a first combined integrated circuit and a second combined integrated circuit providing data voltages, and the first combined integrated circuit and the second combined integrated circuit for providing at least one touch driving signal to the display panel and sensing a touch based on at least one touch sensing signal received in response to the at least one touch driving signal, the method comprising:

• generating a first clock signal and a first touch sensing control signal in the first combined integrated circuit during the first mode but not the second mode;
• generating a second clock signal and a second touch sensing control signal in a micro control unit during the second mode but not the first mode;
• and
• providing the first clock signal and the first touch sensing control signal generated by the first combined integrated circuit to the second combined integrated circuit during the first mode, and
• providing the second clock signal and the second touch sensing control signal generated by the micro control unit to the first combined integrated circuit and the second combined integrated circuit during the second mode.