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:
Nov. 30, 1976
Filed:
Apr. 28, 1975
Applicant:
Inventor:
Bob Hong Yun, South Burlington, VT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ;
U.S. Cl.
CPC ...
3241 / ; 3241 / ; 324 / ;
Abstract
An apparatus for measuring and quantitatively determining the number of surface states at or near the insulator-semiconductor interface in a metal-insulator-semiconductor (MIS) structure by injecting a controlled amount of charge into the insulator to induce a change in the surface state occupancy and measuring simultaneously and directly the amount of charge injected into the insulator, the charge so induced in the semiconductor and in the surface states and the corresponding change in the surface potential of the semiconductor induced by the injected charge.