<p>Disclosed are a display device and a method for driving the same. The display device according to an embodiment of the present invention comprises: a display panel including multiple pixels; a data scaling unit to scale data values of image data received from the outside based on a scaling ratio; a data driver to supply data signals corresponding to the scaled data to data lines connected to the pixels; and a power unit to generate driving voltages to emit light of the pixels and to vary voltage values of the driving voltages in correspondence to the data scaling.</p>
