A display device including: a display unit including a substrate including a first region and a second region, first pixels are included in the first region, second pixels are included in the second region, first gate lines in the first region are connected to the first pixels, second gate lines in the second region are connected to the second pixels, and data lines are connected to the first and second pixels; and a compensator configured to compensate image data for the first and second pixels, based on correction values, and configured to generate corrected image data by decreasing a brightness of an over-compensated portion of the first and second pixels and increasing a brightness of an under-compensated portion of the first and second pixels in a boundary region between the first region and the second region.