A display device includes a display unit which displays an image in a bent state and including a plurality of display surfaces divided from each other by a bending position thereof, a bend-measuring unit including a sensor which measures a bending value of the display unit, a viewpoint-monitoring unit including a sensor which measures a viewing position of a viewer, where the viewing point-monitoring unit outputs position information based on the viewing position of the viewer, a control unit which compensates image data to be displayed on each of the display surfaces, based on the bending value and the position information, and a driving unit which drives the display unit using the compensated image data.