A display apparatus includes a display panel including a plurality of pixels; a source driver configured to convert RGB image data into an RGB image signal, and output the RGB image signal based on a common voltage to each of the plurality of pixels; and a timing controller configured to output the RGB image data to the source driver, and when it is determined the common voltage is changed, the timing controller may adjust the RGB image data to compensate the change of the common voltage, and output the adjusted RGB image data to the source driver.