A display device having a prolonged lifetime by preventing deterioration of image quality by reducing a burn-in is provided. A display device includes a still image region detecting unit for detecting still image data from video data, a detecting unit for detecting, as an edge portion, a pair of pixels having a level difference of image data larger than a set level difference, of a plurality of pair of adjacent pixels for the still image data, and a level adjusting unit for adjusting a level of the image data of a group of pixels including the edge portion and arranged consecutively and outputting the image data after the adjustment to a driving unit. The level adjusting unit adds/subtracts a random noise to/from the image data of the group of pixels.

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