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:
Feb. 19, 1980
Filed:
Apr. 14, 1978
Theodore C Baker, Wayne, OH (US);
William E Johnson, Toledo, OH (US);
Owens-Illinois, Inc., Toledo, OH (US);
Abstract
A driving and addressing circuit for applying sustaining, writing and erasing voltages to the cells of a multicelled gas discharge display/memory panel. The voltage generating circuitry is isolated from each panel electrode by a pair of oppositely poled diodes individual to that electrode. The diodes provide low impedance paths for the sustainer current and isolate the electrodes from each other. The writing and erasing voltages are coupled to the electrodes through a plurality of complementary MOSFETs, one per electrode, which eliminate all but one of the diode switch circuits per electrode array of the prior art circuitry. The P-channel and N-channel MOSFETs can be formed on separate integrated circuit chips with one of the pair of the diodes while the other diodes are formed on common anode and common cathode integrated circuit chips. In addition, a portion of the addressing circuitry can be formed on the MOSFET chips. Such a circuit configuration substantially reduces the power requirements and circuit complexity.