A pixel comprising: an organic light emitting diode; a first transistor connected to a scan line (Sn) and a data line (Dm), the first transistor configured to be turned on when a scan signal is supplied to the scan line; a storage capacitor (Cst) for storing a voltage corresponding to a data signal supplied to the data line; a second transistor for supplying a current corresponding to the voltage stored in the storage capacitor, the current flowing from a first power supply (ELVDD) to a second power supply (ELVSS) via the organic light emitting diode, the second transistor having a first electrode connected to the organic light emitting diode and a second electrode connected to the first power supply; and a compensation unit for controlling a voltage of a gate electrode of the second transistor corresponding to a deterioration of the organic light emitting diode, and for connecting the first electrode of the second transistor to the data line during a compensation period in which a threshold voltage of the second transistor is compensated, wherein the compensation unit comprises: a fourth transistor connected between a first node and the first electrode of the second transistor; a third transistor connected between the first node and a voltage source (Vsus); and a feedback capacitor (Cfb) connected between the first node and the gate electrode of the second transistor, said compensation unit being characterized in that it further comprises a fifth transistor connected between the first node and the data line; an organic light emitting diode; a first transistor connected to a scan line (Sn) and a data line (Dm), the first transistor configured to be turned on when a scan signal is supplied to the scan line; a storage capacitor (Cst) for storing a voltage corresponding to a data signal supplied to the data line; a second transistor for supplying a current corresponding to the voltage stored in the storage capacitor, the current flowing from a first power supply (ELVDD) to a second power supply (ELVSS) via the organic light emitting diode, the second transistor having a first electrode connected to the organic light emitting diode and a second electrode connected to the first power supply; and a compensation unit for controlling a voltage of a gate electrode of the second transistor corresponding to a deterioration of the organic light emitting diode, and for connecting the first electrode of the second transistor to the data line during a compensation period in which a threshold voltage of the second transistor is compensated, wherein the compensation unit comprises: a fourth transistor connected between a first node and the first electrode of the second transistor; a third transistor connected between the first node and a voltage source (Vsus); and a feedback capacitor (Cfb) connected between the first node and the gate electrode of the second transistor, said compensation unit being characterized in that it further comprises a fifth transistor connected between the first node and the data line; a fourth transistor connected between a first node and the first electrode of the second transistor; a third transistor connected between the first node and a voltage source (Vsus); and a feedback capacitor (Cfb) connected between the first node and the gate electrode of the second transistor, said compensation unit being characterized in that it further comprises a fifth transistor connected between the first node and the data line; a fifth transistor connected between the first node and the data line;