Patent ID: 8253699

Claim:
A display apparatus comprising: a display panel including a common electrode receiving a common voltage, pixels facing the common electrode and displaying an image in response to driving signals, and touch sensors arranged adjacent to the pixels and making contact with the common electrode by an external pressure to output the common voltage; a pixel driver electrically connected to the pixels to provide the driving signals to the pixels; a sensing driver electrically connected to the touch sensors to receive the common voltage from the touch sensors and generate a sensing signal based on the common voltage; and a controller which controls a drive of the pixel driver, receives the sensing signal from the sensing driver, and outputs a position information to which the external pressure is applied based on the sensing signal, and the sensing driver comprising: a switching circuit which receives a switching signal from the controller, outputs the common voltage during a first period where the common voltage is in a normal operation range and blocks the common voltage during a second period where the common voltage is out of the normal operation range, so that the common voltage is selectively output to prevent a damage of the sensing driver; and a sensing signal generating circuit which generates the sensing signal based on the common voltage output from the switching circuit.