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. 16, 2013
Filed:
May. 31, 2011
Baozhen LI, South Burlington, VT (US);
Chunyan E. Tian, Hopewell Junction, NY (US);
Chih-chao Yang, Glenmont, NY (US);
Baozhen Li, South Burlington, VT (US);
Chunyan E. Tian, Hopewell Junction, NY (US);
Chih-Chao Yang, Glenmont, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A metal electrically programmable fuse ('eFuse') includes a metal strip, having a strip width, of a metal line adjoined to wide metal line portions, having widths greater than the metal strip width, at both ends of the metal strip. The strip width can be a lithographic minimum dimension, and the ratio of the length of the metal strip to the strip width is greater than 5 to localize heating around the center of the metal strip during programming. Localization of heating reduces required power for programming the metal eFuse. Further, a gradual temperature gradient is formed during the programming within a portion of the metal strip that is longer than the Blech length so that electromigration of metal gradually occurs reliably at the center portion of the metal strip. Metal line portions are provides at the same level as the metal eFuse to physically block debris generated during programming.