Organic light emitting display and method of driving the same

An organic light emitting display comprising:

• pixels at crossing regions of data lines, scan lines, feedback lines, control lines, and emission control lines, each of the pixels comprising an organic light emitting diode;
• a scan driver for driving the scan lines and the emission control lines;
• a control line driver for driving the control lines;
• a sensing unit for supplying an electric current to the feedback lines during a sensing period to extract degradation information of the organic light emitting diode, and for outputting a first digital value and a second digital value corresponding to the extracted degradation information of the organic light emitting diode;
• a data driver for supplying voltages corresponding to the first digital value and the second digital value to the pixels during the sensing period, and for generating data signals corresponding to second data during a normal driving period;
• a first analog-digital converter for receiving and converting the voltage corresponding to the first digital value to a fourth digital value, and for receiving and converting the voltage corresponding to the second digital value to a fifth digital value;
• and
• a timing controller for storing the fourth digital value and the fifth digital value, and for changing externally supplied first data in accordance with the fourth digital value and the fifth digital value to generate the second data.