A display device comprising: a display panel configured to display an image; M reference voltage generators (VPWR), M is an integer of 2 or greater, configured to respectively supply reference voltages to N display areas, N is an integer of 2 or greater, defined on the display panel; and a voltage variation corrector configured to correct for voltage variations between the M reference voltages; wherein the voltage variation corrector comprises: a multiplexer configured to perform a selection operation for obtaining the reference voltages; and a correction circuit (ADIC) configured to extract correction parameters based on the reference voltages obtained by the multiplexer and corrects for the voltage variations between the reference voltages based on the extracted correction parameters; wherein the correction circuit comprises: a selector configured to output selection signals for controlling the multiplexer; a converter configured to sense the reference voltages and convert the sensed reference voltages to digital data; a parameter extractor configured to extract correction parameters based on the digital data corresponding to the reference voltages; and a correction value generator configured to generate correction values for correcting for the voltage variations between the reference voltages based on the correction parameters; wherein the display device further comprises M timing controllers that control data drivers for driving the display panel, wherein the selector, the parameter extractor, and the correction value generator are included in each of the timing controllers, and the converter is included in one of the data drivers. a display panel configured to display an image; M reference voltage generators (VPWR), M is an integer of 2 or greater, configured to respectively supply reference voltages to N display areas, N is an integer of 2 or greater, defined on the display panel; and a voltage variation corrector configured to correct for voltage variations between the M reference voltages; wherein the voltage variation corrector comprises: a multiplexer configured to perform a selection operation for obtaining the reference voltages; and a correction circuit (ADIC) configured to extract correction parameters based on the reference voltages obtained by the multiplexer and corrects for the voltage variations between the reference voltages based on the extracted correction parameters; wherein the correction circuit comprises: a selector configured to output selection signals for controlling the multiplexer; a converter configured to sense the reference voltages and convert the sensed reference voltages to digital data; a parameter extractor configured to extract correction parameters based on the digital data corresponding to the reference voltages; and a correction value generator configured to generate correction values for correcting for the voltage variations between the reference voltages based on the correction parameters; wherein the display device further comprises M timing controllers that control data drivers for driving the display panel, wherein the selector, the parameter extractor, and the correction value generator are included in each of the timing controllers, and the converter is included in one of the data drivers. a multiplexer configured to perform a selection operation for obtaining the reference voltages; and a correction circuit (ADIC) configured to extract correction parameters based on the reference voltages obtained by the multiplexer and corrects for the voltage variations between the reference voltages based on the extracted correction parameters; wherein the correction circuit comprises: a selector configured to output selection signals for controlling the multiplexer; a converter configured to sense the reference voltages and convert the sensed reference voltages to digital data; a parameter extractor configured to extract correction parameters based on the digital data corresponding to the reference voltages; and a correction value generator configured to generate correction values for correcting for the voltage variations between the reference voltages based on the correction parameters; wherein the display device further comprises M timing controllers that control data drivers for driving the display panel, wherein the selector, the parameter extractor, and the correction value generator are included in each of the timing controllers, and the converter is included in one of the data drivers. a selector configured to output selection signals for controlling the multiplexer; a converter configured to sense the reference voltages and convert the sensed reference voltages to digital data; a parameter extractor configured to extract correction parameters based on the digital data corresponding to the reference voltages; and a correction value generator configured to generate correction values for correcting for the voltage variations between the reference voltages based on the correction parameters; wherein the display device further comprises M timing controllers that control data drivers for driving the display panel, wherein the selector, the parameter extractor, and the correction value generator are included in each of the timing controllers, and the converter is included in one of the data drivers.