Display device having compensation for degradation of driving transistors and electronic device having the same

An electronic device comprising a display device and a processor which controls the display device, wherein the display device includes:

• a display panel including a first pixel, a second pixel, and a third pixel;
• a scan driver which provides a scan signal to the first pixel, the second pixel, and the third pixel through scan lines coupled to the first pixel, the second pixel and the third pixel;
• a data driver which provides a data signal to the first pixel, the second pixel, and the third pixel through data lines coupled to the first pixel, the second pixel, and the third pixel;
• a reference voltage generator which provides a first reference voltage which compensates a degradation of a first driving transistor included in the first pixel, a second reference voltage which compensates a degradation of a second driving transistor included in the second pixel, and a third reference voltage which compensates a degradation of a third driving transistor included in the third pixel;
• a timing controller which generates a control signal which controls the scan driver, the data driver, and the reference voltage generator;
• and
• a compensating current calculator which calculates compensating currents of every grayscales of the first pixel, the second pixel, and the third pixel and stores the compensating currents of the first pixel, the second pixel, and the third pixel in a memory device,
• wherein the reference voltage generator differently controls a length of an applied time period of the first reference voltage, a length of an applied time period of the second reference voltage, and a length of an applied time period of the third reference voltage,
• wherein the length of the applied time period of at least one of the first, second and third reference voltages is different from the length of the applied time period of at least one of the other first, second and third reference voltages, and
• wherein the first, second and third reference voltages are all applied beginning at a same time.