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. 23, 1996
Filed:
Jun. 10, 1993
Applicant:
Inventors:
Abdul R Forouhi, San Jose, CA (US);
Iton Wang, San Jose, CA (US);
Assignee:
Actel Corporation, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
257530 ; 257528 ; 257529 ; 257530 ;
Abstract
A metal-to-metal antifuse comprises a lower electrode comprising a first metal layer in an integrated circuit, a first barrier layer formed from a layer of TiW:N disposed over the lower electrode, a layer of antifuse material formed from amorphous silicon over the first barrier layer, a second barrier layer formed from a layer of TiW:N disposed over the layer of antifuse material, said second barrier layer, and an upper electrode over the second barrier layer, the upper electrode comprising a second metal layer in the integrated circuit.