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:
Jul. 27, 1982
Filed:
Jun. 06, 1980
Praveen Chaudhari, Briarcliff Manor, NY (US);
John B Kiessling, Wappingers Falls, NY (US);
David J Perlman, Wappingers Falls, NY (US);
Eugene E Tynan, Mahopac Falls, NY (US);
Robert J von Gutfeld, New York, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A wire is positioned in intimate contact with a microcircuit chip above a conductor line or pad on the chip. The line is protected by a layer of passivating or insulating material deposited upon the chip. A short pulse, focussed, energy source such as a laser beam drills a hole through or on the edge of the wire, and also opens a hole drawn through the insulating material to expose the conductor line. Then energy is directed upon the portion of the wire surrounding the hole to melt metal from the wire down into the hole which coalesces with molten metal below to form an electrical and mechanical bond of the wire to the line.