The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 1979
Filed:
Sep. 22, 1977
Jean H Lorteije, Eindhoven, NL;
Geert Warrink, Eindhoven, NL;
Gerhard H DEVries, Eindhoven, NL;
Jacques A Hulshof, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
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.