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, 2000
Filed:
Sep. 17, 1999
Vincent Michael Donnelly, Jr, Berkeley Heights, NJ (US);
Kazuyoshi Ueno, Kanagawa, JP;
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
The present invention is directed to a device that has wires on at least two levels. The wires are either copper or a metal containing copper. At lease one via plug formed of copper or a metal containing copper is formed which electrically connects at least one wire on the first level with at least one wire on the second level. The device is fabricated under conditions that remove oxides and other metal that form on the exposed surface of the first level of metal during processing prior to the via plug being formed. The resulting interconnect between the first level of metal and the via plus is substantially non-oxidized copper or copper-containing metal.