U.S. Philips Corporation

Jacques A Hulshof

Jean H Lorteije

Geert Warrink

Gerhard H DEVries

In a matrix of display elements arranged in rows and columns having row scanning and column selection, all display elements which are connected to a scanned row conductor are always ignited such that the non-selected display elements of that row receive a low quiescent current through quiescent current supply circuits in the column selection circuits and the selected display elements receive a higher display current through selection circuits in the column selection circuits. The low quiescent currents reduce the ignition-voltage required for the next following row to be scanned while a high contrast is produced between the selected and non-selected display elements.

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Eindhoven, Netherlands

Jacques A Hulshof