ORGANIC LIGHT EMITTING DIODE DISPLAY AND DRIVING METHOD THEREOF

摘要

An organic light emitting diode display and a driving method thereof are provided to increase display quality and lifetime of a display by compensating for threshold voltage variation of TFT(Thin Film Transistor). A voltage stored in a first storage capacitor (Cst1) by a switching circuit is discharged and an electric potential of a first node (n1) is set as a threshold voltage of a driver device. A data voltage is applied from data line to a first storage capacitor by a switching circuit and the electric potential of the first node is maintained to a compensation voltage. The compensation voltage is made by adding the threshold voltage of the driving device and a data voltage. A current path between a ground voltage source (VSS) and a high potential drive voltage source (VDD) are conducted through a switching circuit.