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:
Sep. 26, 2000
Filed:
Jan. 15, 1999
Hiroshi Watanabe, Machida, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
With regard to a method for fault or failure analysis of a fault or failure phenomenon caused by a leakage current, or a method for characterization of semiconductor devices, pre-treatment is conducted to check a leakage point of the semiconductor devices covered by a conductive film. The pre-treatment includes a step of forming a metal film having a lower etching rate than a conductive film over a part of the conductive film. The metal film is used as a mask for forming a nonetching area on the conductive film, when the conductive film is etched. The metal film is also used as an electrode pad to be applied a potential at the characterization of the semiconductor devices.