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:
Jan. 15, 1980
Filed:
Dec. 11, 1978
Applicant:
Inventors:
Harry G Oehler, Glen Burnie, MD (US);
David S Herman, Columbia, MD (US);
James R Cricchi, Catonsville, MD (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
29571 ; 148-15 ; 148187 ; 148188 ; 357 42 ;
Abstract
Described herein a technique for constructing a complementary MOS device on a sapphire substrate so that the surface of the device is planarized, the P-channel and N-channel devices are in substantially correct registration, the threshold voltage for the back-channel leakage effect inherent in sapphire substrate device to occur is increased, and the areas of gate oxidation are pseudo self-aligned so as to minimize overlap of the gate oxide with the source and drain regions.