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, 2015
Filed:
Jan. 24, 2014
Altera Corporation, San Jose, CA (US);
Shuang Xie, Saratoga, CA (US);
Shankar Sinha, San Jose, CA (US);
Cheng-Hsiung Huang, Cupertino, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
An integrated circuit with electrically programmable fuse circuitry coupled to a programming transistor is provided. The programming transistor may be a metal-oxide-semiconductor transistor that is separated from other circuitry in an integrated circuit substrate with shallow trench isolation. The electrically programmable fuse circuitry may be formed in a second layer above the integrated circuit substrate using a conductive material which may be tungsten-based. This second layer may further include interconnect wires made from the same conductive material. The electrically programmable fuse may be coupled to the programming transistor through vias and routing paths in a fourth layer above the integrated circuit substrate. The routing paths in the fourth layer may be made from a conductive material which may be different than the fuse conductive material used to form the programmable fuse circuitry.