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:
Dec. 03, 1991
Filed:
May. 18, 1990
E Henry Stevens, Colorado Springs, CO (US);
Quality Microcircuits Corporation, Colorado Springs, CO (US);
Abstract
An improved structure and process for contacting and interconnecting semiconductor devices within a VLSI integrated circuit are described. The structure includes several regions which cooperate to provide (1) contacts of low electrical resistance to semiconductor device terminals, (2) barriers to unwanted metallurgic reactions, (3) strong bonds between major regions of the structure, (4) overall mechanical strength, (5) a primary current path of low electrical resistance, (6) a secondary current path in parallel with the primary current path, and (7) circuit bond pads for use in making electrical connections to the VLSI circuit. Because of the structure's mechanical strength, semiconductor devices may be placed beneath circuit bond pads. The inventive process facilitates accurate control of the composition and thickness of each of the several regions within the material structure.