A compensation gate electrode G3 of the compensation thin film transistor T3 may be connected to the scan line SL, a compensation source electrode S3 of the compensation thin film transistor T3 may be connected to the driving drain electrode D1 of the driving thin film transistor T1 and connected to the pixel electrode of the organic light-emitting diode OLED via the emission control thin film transistor T6, and a compensation drain electrode D3 of the compensation thin film transistor T3 may be connected to the first storage capacitor plate CE1 of the storage capacitor Cst, the first initialization drain electrode D4 of the first initialization thin film transistor T4, and the driving gate electrode G1 of the driving thin film transistor T1. The compensation thin film transistor T3 may be turned on according to the scan signal Sn received through the scan line SL, to electrically connect the driving gate electrode G1 and the driving drain electrode D1 of the driving thin film transistor T1, to thereby diode-connect the driving thin film transistor T1.