Patent ID: 8405582
Filing Date: 2013-03-26
Classification: G09G

Abstract:
1. An organic light emitting display comprising: a plurality of scan lines for applying scan signals; a plurality of control lines for applying control signals; a plurality of data lines for applying data signals, the data lines crossing the scan lines and the control lines; a plurality of pixels for displaying an image, the pixels coupled to the scan lines, the control lines and the data lines; a plurality of power supply lines coupled to the pixels; a data driver for supplying the data signals of the image to the plurality of data lines; a power supply driver for swinging a voltage at the power supply lines between a first level and a second level; a sensing unit comprising a current sink configured to sink a first current from the pixels and a current source configured to supply a second current to the pixels, the current source being separate from the current sink and the power supply driver; and a switching unit for selectively electrically connecting the plurality of pixels to the data driver, the current source and the current sink to allow a current to flow between the pixels and the connected one of the data driver, the current source, and the current sink, wherein the voltage applied to the power supply lines while the first current flows has a level higher than that of a voltage applied to the power supply lines while the second current flows.