A display device having a plurality of driving modes corresponding respectively to a plurality of driving frequencies is disclosed. The display device includes a display panel configured to display an image and including a subpixel connected to a data line, a data driving circuit configured to provide a data voltage or a park voltage to the subpixel via the data line, a power management circuit configured to provide a plurality of driving voltages to the subpixel, and a controller configured to control at least one of the data driving circuit and the power management circuit to change a level of at least one of the park voltage and the plurality of driving voltages based on a change in a current driving frequency from one of the plurality of driving frequencies to one other of the plurality of driving frequencies.