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:
Feb. 13, 2001
Filed:
Dec. 02, 1999
Applicant:
Inventor:
Anthony Michael Palagonia, Underhill, VT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 3/102 ; H05K 3/02 ;
U.S. Cl.
CPC ...
G01R 3/102 ; H05K 3/02 ;
Abstract
An interposer for making a penetrating temporary contact between the contact pads of a chip having bumped or unbumped I/O pads and a test board for the purpose of testing said chip is disclosed. The interposer comprises a silicon substrate having sharp penetrating structures integrally formed at a predetermined depth in the silicon substrate along crystallographic planes. The resultant apparatus has a matching lateral thermal expansion to the chip being tested and provides uniform contact to all chip I/O pads.