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:
Aug. 01, 1978
Filed:
Apr. 07, 1977
Applicant:
Inventors:
Alfred C Ipri, Princeton, NJ (US);
Doris W Flatley, Belle Meade, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
148-15 ; 357 44 ; 357 91 ;
Abstract
MNOS memory circuit fabrication problems that result in leakage, memory device depletion mode switching and leakage paths at the edges of silicon islands are eliminated by a production process in which deposited and thermal oxides are used as a diffusion mask on the island edges, selective control of the threshold level of the memory device is achieved by ion implantation, and a thick oxide is grown on the silicon island edges to control charge injection.