Patent ID: 9734800
Date: 2017-08-15
CPC Classifications: G09G

Claim:
1. An organic light emitting display comprising: a display panel including subpixels; a data driver that supplies a plurality of data signals to the display panel; a scan driver that supplies a plurality of scan signals to the display panel; and a sensing circuit unit that measures threshold voltages of driving transistors through sensor transistors of the display panel and prepares compensation data, wherein the scan driver turns on the sensor transistors of selected subpixels to measure the threshold voltages of the driving transistors of the selected subpixels during a vertical blank interval of the display panel, and turns on the sensor transistors of non-selected subpixels to supply voltages below a threshold voltage of organic light emitting diodes to the non-selected subpixels during an image display interval of the display panel.