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. 07, 2023
Filed:
Apr. 19, 2019
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Chihiro Kawahara, Tokyo, JP;
Yukihiko Wada, Tokyo, JP;
Assignee:
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/26 (2020.01); G01N 17/00 (2006.01); G01R 31/30 (2006.01); G01R 31/317 (2006.01);
U.S. Cl.
CPC ...
G01R 31/26 (2013.01); G01N 17/00 (2013.01); G01R 31/3008 (2013.01); G01R 31/317 (2013.01);
Abstract
A direct-current power supply applies a DC voltage to test semiconductor devices. A current detection unit detects a leakage current of a test circuit in which test semiconductor devices are included. A measuring instrument records a pulse waveform of the leakage current. An analyzer analyzes reliability of test semiconductor devices included in the test circuit based on the recorded pulse waveform.