Organic light emitting display and driving method thereof

An organic light emitting display configured to be driven using a plurality of sensing frames for extracting threshold voltage and mobility information of driving transistors included in pixels, the organic light emitting display comprising:

• the pixels at areas defined by scan lines and data lines;
• a scan driver configured to supply a scan signal to a specific scan line of the scan lines during a third period of a sensing frame of the sensing frames, and configured to sequentially supply scan signals to the scan lines during a sixth period of the sensing frame;
• a data driver configured to supply, to the data lines, a previous data signal corresponding to a gray scale according to the scan signal supplied to the specific scan line during the third period, and configured to supply a current data signal to the data lines to be synchronized with the scan signals supplied to the scan lines during the sixth period;
• a compensator configured to extract the threshold voltage and mobility information of the driving transistors from ones of the pixels at a specific horizontal line and coupled to the specific scan line before the scan signal is supplied to the specific scan line during the third period;
• and
• a control driver configured to supply a first control signal to first control lines during a first period of the sensing frame, configured to supply the first control signal to a specific first control line during a fourth period of the sensing frame, configured to supply a second control signal to a second control line commonly coupled to the pixels during second and fifth periods of the sensing frame, and configured to supply a third control signal to a specific third control line among third control lines during the third period of the sensing frame,
• wherein the scan driver is configured to supply a first emission control signal to a first emission control line commonly coupled to the pixels during the first and fifth periods of the sensing frame, and is configured to supply a second emission control signal to a second emission control line commonly coupled to the pixels during the first, second, fourth, and fifth periods of the sensing frame.

A method of driving an organic light emitting display using a plurality of sensing frames for extracting threshold voltage and mobility information of driving transistors of pixels, the method comprising:

• supplying a voltage of a specific data signal to specific pixels at a specific horizontal line, and storing the voltage of the specific data signal in a second capacitor included in a first driver of each of the specific pixels;
• supplying the voltage of the specific data signal to a first capacitor included in a second driver comprising the driving transistor of each of the specific pixels;
• extracting threshold voltage and mobility information of the driving transistors, using current flowing from the driving transistors according to the specific data signal;
• storing a current data signal corresponding to a gray scale in the second capacitor included in the first driver of each of the pixels concurrently with a scan signal supplied to each of the pixels;
• supplying a stored previous data signal to the first capacitor included in the second driver of each of the pixels before storing the current data signal in the second capacitor included in the first driver;
• and
• supplying current corresponding to the previous data signal to an organic light emitting diode.