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. 12, 1989
Filed:
Sep. 24, 1987
Applicant:
Inventors:
Eric F Schulte, Santa Barbara, CA (US);
Eric D Olson, Lompoc, CA (US);
Assignee:
Santa Barbara Research Center, Goleta, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ;
U.S. Cl.
CPC ...
228116 ; 228205 ; 2281802 ;
Abstract
A method is disclosed for joining two semiconductor devices 10 and 10', each having a plurality of metallic contact bumps 12 and 12' on the major surfaces 14 and 14' thereof. The devices are etched to remove oxide 18 from the contact bumps and to prevent subsequent oxidation thereon. The devices are then oriented so that the bumps 12 and 12' on the respective devices are aligned opposite each other. By applying pressure to the devices, the bumps are caused to cold-weld together to form a single device 24.