Patent ID: 6373454
Filing Date: 2002-04-16
Classification: G09G

Abstract:
An active matrix electroluminescent display device comprising a matrix array of electroluminescent display elements each of which has an associated switching means for controlling the current through the display element in accordance with an applied drive signal and in which the switching means comprises a drive transistor whose first current-carrying terminal is connected to a first supply line, whose second current-carrying terminal is connected via the display element to a second supply line and whose gate is connected to its first current-carrying terminal via a capacitance, wherein the second current-carrying terminal of the drive transistor is connected to an input terminal for the drive signal and wherein a switch device is connected in series between the second current-carrying terminal and the gate of the transistor which is operable during the application of a drive signal so as to store a gate voltage on the capacitance determined by the drive signal.