Patent ID: 6498595
Filing Date: 2002-12-24
Classification: G09G

Abstract:
An active matrix liquid crystal display device comprising a row and column array of display elements each of which is connected to a transistor, sets of row and column address conductors connected to the transistors, each display element having an associated storage capacitor connected between the display element and a row conductor adjacent that to which the transistor associated with the display element is connected, and a drive circuit for applying data signals to the column conductors and, during a row address period for each row of display elements, a selection pulse signal to each row conductor in sequence for driving the display elements, the drive circuit being arranged to provide adjacent to a selection pulse signal in the row drive waveform a step level which exists at the termination of a selection pulse signal on an adjacent row conductor and which contributes to a drive voltage obtained on a display element via its associated storage capacitor, characterised in that drive circuit is arranged to provide in the row drive waveform applied to each row conductor a step level both before and after the selection pulse signal.