Display device and method of driving the same

A display device comprising:

• a detector which detects a number of toggles in which an amount of change in gray values of successive pixels driven by a same data line in one frame is equal to or greater than a reference gray change amount;
• a comparator which compares the number of toggles detected by the detector with a reference number of toggles;
• and
• a driving voltage converter which controls a data driver to be driven using any one of a first driving voltage and a second driving voltage based on the comparator comparing the number of toggles detected by the detector with the reference number of toggles.

A method of driving a display device, the method comprising:

• detecting a number of toggles in an image data in which an amount of change in gray values of successive pixels driven by the same data line in one frame is equal to or greater than a reference gray change amount;
• determining whether the number of toggles detected is equal to or greater than a reference number of toggles;
• selecting a first lookup table when it is determined that the number of toggles is equal to or greater than the reference number of toggles;
• selecting a second lookup table when it is determined that the number of toggles detected is less than the reference number of toggles;
• and
• providing the selected first lookup table or second lookup table to a data driver.