A display device can include an organic light emitting layer positioned between an anode electrode and a cathode electrode; an encapsulation layer disposed on the organic emission layer to protect the organic emission layer; a touch layer disposed on the sealing layer, the touch layer having a plurality of touch sensors configured to be driven according to a touch driving signal; a ground modulation signal generator configured to generate a ground modulation signal having a same amplitude as an amplitude of the touch driving signal; and a driving voltage supply configured to generate a modulated driving voltage based on the ground modulation signal, and apply the modulated driving voltage to a driving voltage supply line in synchronization with the touch driving signal within a same display frame.