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. 04, 1996
Filed:
Aug. 05, 1994
Ronald L Williams, San Marcos, CA (US);
Joe B Tyra, Carlsbad, CA (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
A method and apparatus for protecting metal bumped chips during processing and for providing mechanical support to interconnected chips. A protective adhesive stop is affixed to a metal bumped chip so that the height of the stop is at least as high as the metal bump. The stop protects the metal bump during routine handling. When the chip is interconnected to another bumped chip by cold welding their respective metal bumps, the stop contacts the face of the second chip and provides mechanical support. The stop is preferably a thermoplastic that is heated to adhere it to the second chip. The addition of the protective stop facilitates automated processing of metal bumped chips, and provides stronger, faster, and lower power chips.