A display device includes a display panel including pixels, pixel electrodes disposed in pixel areas corresponding to the pixels, arranged at a first distance from each other along a first direction, and extending in a second direction crossing the first direction, and a black matrix disposed in a non-pixel area adjacent to each pixel area, where a width of the black matrix between the pixel areas and the first distance are set to allow a variation rate of brightness of each pixel arranged in a same pixel column and a pixel row to be in a range from about +2% to about −2% when a gray-scale level of the pixels respectively disposed at left and right sides of each pixel arranged in the same pixel column is changed to a different gray-scale level in the pixel row from a gray-scale level in a previous pixel row.