ORGANIC LIGHT EMITTING DISPLAY

摘要

An organic light emitting display is provided to improve image quality as well as resolution of the OLED(Organic Light Emitting Device) by quickly charging a data voltage using a voltage programming method. Data lines(Data[m]) supply data voltages. Scan lines(Scan[n]) supply scan signals. A first current line(Isink) supplies a first current. A control electrode of a first switch(S1) is connected to the scan line. The first switch delivers the data voltage from the data line. A driving transistor(M1) includes a control electrode connected to the first switch, and controls a driving current for a first voltage line. A first capacitor(C1) is connected between the first switch and the control electrode of the driving transistor. An OLED is connected between the driving transistor and a second voltage line, and displays an image according to the current from the driving transistor. A second switch(S2) is connected between a first current line and the driving transistor and compensates for a variation of the driving transistor by applying the first current to the driving transistor. When the second switch is turned on, the first current from the first current line is supplied, such that a variation in the driving transistor is compensated. When the first switch is turned on, the data voltage is applied to the first capacitor.