Patent ID: 7760171
Filing Date: 2010-07-20
Classification: G09G

Abstract:
1. An organic light emitting display device comprising: a display region including a plurality of pixels coupled with scan lines, data lines, current supply lines, and address lines; a scan driver for supplying a scan signal to the scan lines to sequentially drive the pixels in horizontal lines, a pixel selected by the scan signal being a selected pixel; a current sink coupled with the current supply lines for sinking a sinking current from selected pixels; an address driver for providing a select signal to the address lines at predetermined intervals of time; and a data driver for supplying a data signal to synchronize with the select signal, such that light emissions from the pixels are controlled by synchronization of the data signal and the select signal, wherein the current sink includes: sample/hold sections coupled with the current supply lines for sinking the sinking current; a first switch for controlling coupling between the sample/hold sections and the current supply lines; a second switch for controlling a coupling to supply a reference current to at least one of the sample/hold sections; and a controller for controlling the sample/hold sections, the first switch, and the second switch.