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.

Date of Patent:
Aug. 20, 2019

Filed:

Mar. 20, 2018
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Keith A. Jenkins, Sleepy Hollow, NY (US);

Barry Linder, Hastings-on-Hudson, NY (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/66 (2006.01); G01R 31/28 (2006.01); G01R 31/26 (2014.01);
U.S. Cl.
CPC ...
H01L 22/34 (2013.01); G01R 31/2884 (2013.01); G01R 31/2642 (2013.01);
Abstract

Methods and circuits for monitoring circuit degradation include measuring degradation in a set of on-chip test oscillators that vary according to a quantity that influences a first type of degradation. A second type of contribution to the measured degradation is determined by extrapolating from the measured degradation for the plurality of test oscillators. The second type of contribution is subtracted from the measured degradation at a predetermined value of the quantity to determine the first type of degradation for devices represented by the predetermined value.


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