Disclosed is a display device, including: a pixel unit including a first pixel column, in which first color pixels and second color pixels are alternately arranged, a second pixel column, in which the first color pixels and the second color pixels are alternately arranged in a reverse order to that of the first pixel column, and a third pixel column, in which third color pixels are arranged, disposed between the first pixel column and the second pixel column; a data driver generating data signals, and supplying the generated data signals to the pixel unit; and a gamma adjustor detecting a specific pattern based on the input data, adjusting at least one of gamma values when the specific pattern is detected, and outputting the adjusted gamma value to the data driver.