Patent ID: 8373687

Claim:
An organic light emitting display, comprising: a plurality of pixels disposed near intersections of data lines, scan lines, and emission control lines, each pixel comprising: an organic light emitting diode, and a transistor configured to provide current to the organic light emitting diode; a scan driver configured to supply a scan signal to the scan lines and to supply an emission control signal to the emission control lines; a control line driver configured to supply a control signal to control lines; a data driver configured to generate data signals for the data lines; a sensing unit configured to: sense degradation information of a selected one of the organic light emitting diodes in a first operation, and sense degradation information of a threshold voltage and/or mobility information of the transistor that provides current to the selected organic light emitting diode in a second operation, wherein the first and second operations are separate in time; a switch unit configured to connect one of the sensing unit and the data driver to the data lines; a control block configured to store the sensed degradation information and the sensed threshold voltage and/or mobility information; and a timing controller configured to generate second data based on first data from another circuit, the sensed degradation information, and the sensed threshold voltage and/or mobility information.