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:
Sep. 18, 1979
Filed:
Jan. 16, 1978
Applicant:
Inventors:
Richard Williams, Princeton, NJ (US);
Murray H Woods, Palo Alto, CA (US);
Assignee:
RCA Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01T / ;
U.S. Cl.
CPC ...
250370 ; 250316 ; 3241 / ;
Abstract
A body of semiconductor material having a layer of an oxide on a surface thereof is subjected to a negative corona discharge in air to deposit a negative charge on the outer surface of the oxide. This results in an immobile positive charge at the interface between the oxide layer and the semiconductor body. The amount of this positive charge, which can be measured by standard MOS capacitance measurements, indicates the radiation hardness of the device.