Curved display device and luminance correction method for driving the same

A display device, comprising:

• a curvature-variable display panel comprising a plurality of pixels;
• a controller configured to correct luminance of an image signal supplied from an external source according to a radius of curvature of the display panel and to output the corrected image signal;
• a data driver configured to supply a data signal corresponding to the corrected image signal to a data line connected to the pixel;
• and
• a scan driver configured to supply a scan signal synchronized with the data signal to a scan line connected to the pixel,
• wherein the controller comprises:
• a curvature detector connected to the curvature-variable display panel, the curvature detector configured to detect the radius of curvature of the display panel;
• and
• a lookup table generator connected to the curvature detector, the radius of curvature of the display panel being transmitted to the lookup table generator from the curvature detector, the lookup table generator configured to generate a luminance correction lookup table according to the radius of curvature of the display panel.