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:
May. 24, 1994
Filed:
Jul. 23, 1991
Jon J Fong, San Diego, CA (US);
William B Reid, Solana Beach, CA (US);
Hewlett Packard Company, Palo Alto, CA (US);
Abstract
An electrostatic discharge structure protection structure formed on an interconnect circuit (20) that includes elongated interconnect lines (13) and interconnect contact pads (17) formed on a dielectric substrate (11) wherein portions of the interconnect circuit are subject to physical contact by a person. The electrostatic discharge protection structure includes an interconnected conductive grounding metallization ground pattern that includes a ground ring pattern (19) adjacent selected edges of the perimeter of the substrate and conductive metallization traces (29) adjacent selected edges of openings in the substrate. The electrostatic discharge protection structure further includes spark gaps (23a, 23b) formed between the interconnect pads and the conductive grounding pattern, and grounding pads (25') exposed by openings in the substrate.