Driving device of display panel and display device including the same

A display device comprising:

• a display panel including a plurality of pixels;
• and
• a driver which provides a data signal and a gate signal to the pixels, and
• wherein the driver includes:
• a timing controller which converts a first image data provided from an external device to a second image data and generates control signals which control a driving timing of the second image data;
• a gamma data provider which determines a driving frequency of the second image data based on a number of a counting signal output during an active period and a black period of a vertical synchronized signal, and outputs one of a plurality of gamma data sets based on the driving frequency;
• a data driver which generates the data signal corresponding to the second image data based on the one of the plurality of gamma data sets, and outputs the data signal to a data line of the display panel based on the control signals;
• and
• a gate driver which outputs the gate signal to a gate line of the display panel based on the control signals.