| 摘要 |
The present invention relates to an organic light emitting display device and a driving method thereof. The disclosed organic light emitting display device of the present invention includes a plurality of sub pixels connected to a data line, a scan line, and a reference line. The sub pixels individually comprise: an organic light emitting diode; a driving transistor to control current passing through the organic light emitting diode; a switching transistor to supply data voltage supplied to the data line to a first node connected to a gate electrode of the driving transistor; a capacitor arranged between the first node and a second node in which the driving transistor and the organic light emitting diode are connected; and a cathode power line which classifies at least two sub pixels among the sub pixels as one unit, and is connected to a cathode of the organic light emitting diode commonly arranged on the sub pixels of the classified unit. Therefore, a degradation degree of the organic light emitting diode arranged on an individual sub pixel (P) can be sensed. |
