An active matrix electroluminescent display device in which the drive current through an electroluminescent display element (20) in each pixel (10) in a drive period is controlled by a driving device (22) based on a drive signal applied during a preceding address period and stored as a voltage on an...http://www.google.de/patents/US6542138?utm_source=gb-gplus-sharePatent US6542138 - Active matrix electroluminescent display device