An emission control gate electrode G6 of the emission control TFT T6 is connected to the emission control line EL, an emission control source electrode S6 of the emission control TFT T6 is connected to the driving drain electrode D1 of the driving TFT T1 and the compensation source electrode S3 of the compensation TFT T3, and an emission control drain electrode D6 of the emission control TFT T6 is electrically connected to a second initialization source electrode S7 of the second initialization TFT T7 and the pixel electrode of the OLED.
The operation control TFT T5 and the emission control TFT T6 are simultaneously turned on in response to the emission control signal EM received through the emission control line EL, so that the driving voltage ELVDD is transmitted to the OLED and the driving current IOLED flows through the OLED.
A second initialization gate electrode G7 of the second initialization TFT T7 is connected to the previous scan line SIL, the second initialization source electrode S7 of the second initialization TFT T7 is connected to the emission control drain electrode D6 of the emission control TFT T6 and the pixel electrode of the OLED, and the second initialization drain electrode D7 of the second initialization TFT T7 is connected to the first initialization source electrode S4 of the first initialization TFT T4 and the initialization voltage line VIL. The second initialization TFT T7 is turned on according to the previous scan signal GI received through the previous scan line SIL and initializes the pixel electrode of the OLED.