Patent ID: 8704738
Filing Date: 2014-04-22
Classification: G09G

Abstract:
1. A method of driving an organic light emitting display device comprising a plurality of pixels, each of the pixels comprising an organic light emitting diode, a driving transistor for controlling an amount of current supplied to the organic light emitting diode, and an initializing transistor coupled to a gate electrode of the driving transistor, the method comprising: initializing, concurrently, the gate electrodes of the driving transistors and the anode electrodes of the organic light emitting diodes of the pixels during a reset period; charging, concurrently, a second capacitor of each of the pixels with a voltage corresponding to a threshold voltage of the corresponding driving transistor during a threshold voltage compensation period; selecting the pixels of each horizontal line and charging a first capacitor of each of the pixels with a voltage corresponding to a corresponding data signal of the data signals during a scan period; and producing light in accordance with the amount of current supplied to a second power driver from a first power driver through the organic light emitting diode in accordance with the voltages of the first capacitor and the second capacitor during an emission period, wherein the voltages of the gate electrodes of the driving transistors are initialized to a reset voltage by turning on the initializing transistor during the reset period, and wherein a high voltage level of the second power driver is supplied during the reset period, the threshold voltage compensation period, and the scan period and a low voltage level of the second power driver is supplied during the emission period.