METHOD FOR CONTROLLING A MATRIX DISPLAY SCREEN FOR ADJUSTING ITS CONTRAST AND DEVICE FOR CARRYING OUT SAID METHOD

摘要

P A control method of a matrix display screen for adjusting its contrast consisting in applying to periodically line conductors addressing signals Vl having for a certain duration a value Vmax in absolute value, to be applied to drivers columns of control signals. Lines of the address conductors whose lengths during which they have a value Vmax overlap for two consecutive lines are applied to the line conductors. / P P Device for implementing this method. / P P Application to the realization of displays for the visualization of still or moving images. / P