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:
Jun. 13, 1989
Filed:
Aug. 20, 1987
Joseph J Gajda, Wappingers Falls, NY (US);
Kris V Srikrishnan, Wappingers Falls, NY (US);
Paul A Totta, Poughkeepsie, NY (US);
Francis G Trudeau, Wappingers Falls, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An integrated circuit chip including a first and a higher second surface levels with an abrupt sidewall step transition therebetween, and having a first layer of a first conductive material disposed over the first surface level and over the second surface level, but terminating on the first surface level in a first end portion which extends up to but does not touch the sidewall. This end portion comprises a conductive material which has been converted to an insulator. A second layer of a second conductive material is disposed on top of the first conductive layer with essentially no conductive material conversion to insulator therein adjacent to the abrupt sidewall transition. In a preferred embodiment, the conductive material is an alloy of aluminum and the end portion is aluminum oxide.