Clean common unwanted signals from pixel measurements in emission displays

摘要

A method of compensating for common unwanted signals present in pixel data measurements of a pixel circuit in a display having a plurality of pixel circuits each comprising a memory device, a driving transistor and a light emitting device. From a first pixel circuit, first pixel data are measured by means of a monitoring line. By means of the monitoring line or another monitoring line, second pixel data are measured from the first pixel circuit or a second pixel circuit. The first measured pixel data or the second measured pixel data or both are used to purify the other of the first measured pixel data or the second measured common unwanted signal pixel data to produce cleaned data for parameter extraction from the first pixel and / or the second pixel.