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:
Jul. 01, 1980
Filed:
Apr. 27, 1978
Ralph S Keen, Missouri City, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A programmable read only memory array of the fusible link type employs a small part of a deposited metal film as a fuse. The film is covered by a protective glaze which seals the surface of the semiconductor chip to avoid deterioration of the transistors or other components. In order to minimize heat loss to the semiconductor substrate when programming, and to provide a cavity beneath the protective glaze, the metal film is raised above the surface at the position of the fusible link. This is accomplished by a segment of photoresist applied prior to metal deposition, then removed with photoresist stripper after the metal is patterned.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile