ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF DRIVING THE SAME

摘要

A method of driving an organic light emitting display device includes compensating threshold voltages of driving transistors included in respective pixels while concurrently supplying scan signals to scan lines, lowering voltages of gate electrodes of the driving transistors and equalizing voltages of first electrodes and second electrodes of the driving transistors after the compensating of the threshold voltages, transmitting data signals to the pixels while progressively supplying the scan signals to the scan lines, and emitting light concurrently from the pixels in response to gray levels of the data signals.

主权项

1. An organic light emitting display device comprising:
a scan driver configured to supply scan signals to scan lines concurrently during a first period of a single frame and progressively during a second period of the single frame; a data driver configured to supply data signals to data lines in synchronization with the scan signals progressively supplied to the scan lines during the second period; pixels coupled to the scan lines and the data lines; a first voltage driver configured to supply a first voltage varying between a low-level first voltage and a high-level first voltage to the pixels during the single frame; and a second voltage driver configured to supply a second voltage varying between a low-level second voltage and a high-level second voltage to the pixels during the single frame, wherein the first period is divided into an initialization period, a threshold voltage compensation period, and a stabilization period, and wherein the data driver is configured to supply
a first initialization voltage to the data lines for some of the initialization period,a reference voltage that is higher than the first initialization voltage to the data lines during the threshold voltage compensation period, anda second initialization voltage that is lower than the reference voltage to the data lines for some of the stabilization period.