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:
Sep. 15, 1987
Filed:
Dec. 31, 1984
Paul E Poppert, Acton, MA (US);
Marvin J Tabasky, Peabody, MA (US);
GTE Laboratories Incorporated, Waltham, MA (US);
Abstract
Method of producing metal interconnections in a semiconductor integrated circuit structure of a body of silicon coated with silicon dioxide having openings therein exposing contact regions to underlying silicon. A thick layer of an insulating or dielectric material, for example, polymide, is deposited on the body. Grooves in the pattern of the desired interconnections are etched through the thick insulating layer to the underlying silicon dioxide and contact regions. Metal is deposited to fill the grooves and cover the thick layer of insulating material. Excess metal is removed to form a planar surface exposing the surface of the thick insulating layer with the grooves containing metal to provide electrical connections between contact regions.