LG Display Co., Ltd.
TOUCH DISPLAY DEVICE AND METHOD OF DRIVING THE SAME

Abstract:

A touch display device may include a touch panel configured to be time-divisionally driven in touch sensing and display periods by a synchronization signal and including touch electrodes, and a touch driver to drive the touch panel. The touch driver may include: a touch sensing circuit to supply a touch driving signal to the touch electrodes, to receive an analog touch sensing signal from the touch electrodes, and to sample an integral value of the analog touch sensing signal to output a digital sensing data; a touch control circuit to generate a pulse width modulation (PWM) signal and to receive the digital sensing data to determine a touch; and a timing control circuit to provide an output signal to the touch sensing circuit to control a sampling timing of the integral value of the analog touch sensing signal.