Display device and driving method thereof

A display device of the present disclosure includes a pixel unit having a plurality of pixel rows; a color controller configured to convert input grayscales for each of the pixel rows into output grayscales based on user setting parameters; and a data driver configured to supply data voltages corresponding to the output grayscales to each of the pixel rows, and the color controller includes a plurality of grayscale converters configured to convert the input grayscales for a plurality of target pixels corresponding to a part of a pixel row into the output grayscales in parallel, wherein the plurality of target pixels are most adjacent to each other; and a path determiner configured to match the output grayscales with the plurality of target pixels.