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:
Oct. 04, 2022
Filed:
Apr. 18, 2018
Applicant:
Hamamatsu Photonics K.k., Hamamatsu, JP;
Inventors:
Toru Matsumoto, Hamamatsu, JP;
Koichi Endo, Tokyo, JP;
Tomonori Nakamura, Hamamatsu, JP;
Kazushige Koshikawa, Hamamatsu, JP;
Assignee:
HAMAMATSU PHOTONICS K.K., Hamamatsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/26 (2020.01);
U.S. Cl.
CPC ...
G01R 31/2608 (2013.01);
Abstract
A device analysis apparatus is a device analysis apparatus for determining a quality of a power semiconductor device, including an application unit that applies a voltage signal to the power semiconductor device, a light detection unit that detects light from the power semiconductor device at a plurality of detection positions and outputs detection signals based on detection results, and a determination unit that determines the quality of the power semiconductor device based on temporal changes of the detection signals.