Touch display driving integrated circuit and operation method thereof

A touch display driving integrated circuit comprising:

• a touch driver connected to touch electrodes through touch sensing lines to provide a common voltage to each touch sensing line during a display period and to provide a first touch sensing signal to each touch sensing line during a touch period;
• a transition voltage controller configured to output a first output voltage during the display period and to output a second output voltage higher by a predetermined level than the first output voltage during a transition period from the display period to the touch period;
• and
• a source driver connected with pixels through data lines to provide a data signal to each data line during the display period and to provide the second output voltage to each data line during the transition period.

A touch display device comprising:

• a touch display panel including a touch electrode and a pixel;
• and
• a touch display driving integrated circuit configured to control the touch display panel,
• wherein the touch display driving integrated circuit comprises:
• a touch driver connected with the touch electrode through a touch sensing line to apply a common voltage to the touch sensing line during a display period and to provide a first touch sensing signal to the touch sensing line during a touch period;
• a transition voltage controller configured to output a first output voltage during the display period and to output a second output voltage higher by a predetermined level than the first output voltage during a transition period from the display period to the touch period;
• and
• a source driver connected with the pixel through a data line to provide a data signal to the data line during the display period and to provide the second output voltage to the data line during the transition period.