A display device with integrated touch screen is provided. The display device includes a panel configured to include a plurality of driving electrodes and a plurality of sensing electrodes and a display driver IC configured to apply a common voltage to the plurality of driving electrodes and the plurality of sensing electrodes when the panel operates in a display driving mode, and when the panel operates in a touch driving mode, generate a pulse-modulated driving pulse according to a timing pulse and a pulse modulation control signal to apply the pulse-modulated driving pulse to the plurality of driving electrodes, and respectively receive a plurality of sensing signals from the plurality of sensing electrodes.