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:
Apr. 14, 1981
Filed:
Dec. 11, 1978
Richard F Dreves, Westford, VT (US);
John F Fresia, Shelburne, VT (US);
Sang U Kim, Essex Junction, VT (US);
John J Lajza, Jr, Essex Junction, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of forming a self aligned guard ring surrounding a schottky barrier diode device without requiring an enlargement of the final schottky barrier device. The method involves creating an overhanging opening in a insulator layer overlying a semiconductor body to expose the schottky contact area on the surface of the semiconductor body, depositing a diffusion barrier material such as molybdenum in the opening, the deposit being of the same size as the smallest part of the overhanging opening so that a guard ring can be formed from a vapor by diffusion around the deposited barrier material.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile