A display device , comprising: a display ; and a controller to control the display to remove image sticking on the display, wherein the controller is configured to: execute an application for removing image sticking, control the display to display a display screen, detect a signal for selecting a portion of the display screen, wherein the signal corresponds to a user command, identify an image sticking area from the display screen based upon the portion of the display screen selected by the signal, and adjust a luminance in an area of the display surrounding the image sticking area, characterized in that the controller is configured to control the display to display a GUI for adjusting a luminance in an area of the display adjacent to the image sticking area, wherein the controller is configured to adjust the luminance in the area of the display adjacent to the image sticking area in accordance with a selection in the displayed GUI, and wherein the GUI includes an adjustment bar and a first indicator on the adjustment bar corresponding to a luminance value, and wherein the selection in the displayed GUI moves the first indicator on the adjustment bar to adjust the luminance in the area of the display adjacent to the image sticking area. a display ; and a controller to control the display to remove image sticking on the display, wherein the controller is configured to: execute an application for removing image sticking, control the display to display a display screen, detect a signal for selecting a portion of the display screen, wherein the signal corresponds to a user command, identify an image sticking area from the display screen based upon the portion of the display screen selected by the signal, and adjust a luminance in an area of the display surrounding the image sticking area, characterized in that the controller is configured to control the display to display a GUI for adjusting a luminance in an area of the display adjacent to the image sticking area, wherein the controller is configured to adjust the luminance in the area of the display adjacent to the image sticking area in accordance with a selection in the displayed GUI, and wherein the GUI includes an adjustment bar and a first indicator on the adjustment bar corresponding to a luminance value, and wherein the selection in the displayed GUI moves the first indicator on the adjustment bar to adjust the luminance in the area of the display adjacent to the image sticking area. execute an application for removing image sticking, control the display to display a display screen, detect a signal for selecting a portion of the display screen, wherein the signal corresponds to a user command, identify an image sticking area from the display screen based upon the portion of the display screen selected by the signal, and adjust a luminance in an area of the display surrounding the image sticking area, characterized in that the controller is configured to control the display to display a GUI for adjusting a luminance in an area of the display adjacent to the image sticking area, wherein the controller is configured to adjust the luminance in the area of the display adjacent to the image sticking area in accordance with a selection in the displayed GUI, and wherein the GUI includes an adjustment bar and a first indicator on the adjustment bar corresponding to a luminance value, and wherein the selection in the displayed GUI moves the first indicator on the adjustment bar to adjust the luminance in the area of the display adjacent to the image sticking area. <EOS>