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:
Sep. 07, 2021

Filed:

Jul. 02, 2019
Applicant:

Fei Company, Hillsboro, OR (US);

Inventors:

Pavel Stejskal, Brno, CZ;

Christopher J. Stephens, West Sussex, GB;

Assignee:

FEI Company, Hillsboro, OR (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 37/00 (2006.01); H01J 37/295 (2006.01); G01N 23/20058 (2018.01); G01N 23/203 (2006.01); H01J 37/244 (2006.01); H01J 37/26 (2006.01);
U.S. Cl.
CPC ...
H01J 37/2955 (2013.01); G01N 23/203 (2013.01); G01N 23/20058 (2013.01); H01J 37/244 (2013.01); H01J 37/261 (2013.01); H01J 2237/24475 (2013.01); H01J 2237/24485 (2013.01); H01J 2237/24495 (2013.01);
Abstract

Various methods and systems are provided for acquiring electron backscatter diffraction patterns. In one example, a first scan is performed by directing a charged particle beam towards multiple impact points within a ROI and detecting particles scattered from the multiple impact points. A signal quality of each impact point of the multiple impact points is calculated based on the detected particles. A signal quality of the ROI is calculated based on the signal quality of each impact point. Responsive to the signal quality of the ROI lower than a threshold signal quality, a second scan of the ROI is performed. A structural image of the sample may be formed based on detected particles from both the first scan and the second scan.


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