Display device integrated with touch screen and method of driving the same

A display device integrated with a touch screen, comprising:

• a lower substrate configuring a liquid crystal panel, a plurality of gate lines and a plurality of data lines being arranged to intersect each other in the lower substrate;
• an upper substrate configuring the liquid crystal panel, the upper substrate being coupled to the lower substrate with a liquid crystal layer therebetween;
• a pixel electrode disposed in the lower substrate;
• a common electrode disposed in the lower substrate or the upper substrate;
• a gate driver supplying a scan signal to the plurality of gate lines;
• a data driver supplying data voltages to the respective data lines;
• a touch IC supplying a touch driving signal to the gate line, the data line, or the common electrode;
• a switching unit switching input or output of signals such that a display signal for image display is supplied to the liquid crystal panel during a display period, and the touch driving signal is supplied to the liquid crystal panel during a non-display period;
• and
• a timing controller controlling driving of each of the gate driver, data driver, and touch IC.