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:
Apr. 14, 2020
Filed:
Jul. 03, 2018
Fei Efa, Inc., Fremont, CA (US);
Herve Deslandes, Sunnyvale, CA (US);
Prasad Sabbineni, San Ramon, CA (US);
Regina Freed, Los Altos, CA (US);
FEI EFA, Inc., Fremont, CA (US);
Abstract
An apparatus and method for optical probing of a DUT is disclosed. The system enables identifying, localizing and classifying faulty devices within the DUT. A selected area of the DUT is imaged while the DUT is receiving test signals, which may be static or dynamic, i.e., causing certain of the active devices to modulate. Light from the DUT is collected and is passed through a rotatable diffracting element prior to imaging it by a sensor and converting it into an electrical signal. The resulting image changes depending on the rotational positioning of the grating. The diffracted image is inspected to identify, localize and classify faulty devices within the DUT.