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. 29, 2004
Filed:
Jan. 29, 2002
Alexander Brandorff, New Milford, CT (US);
William P. Pardee, Redding, CT (US);
Wentworth Laboratories Inc., Brookfield, CT (US);
Abstract
A probe card assembly that compensates for differing rates of thermal expansion is disclosed herein. The assembly is comprised of a multi-layered dielectric plate interposed between a probe head and a printed circuit board. The printed circuit board has arrayed upon its surface a first plurality of electrical contacts arranged in a pattern. The dielectric plate has a second plurality of electrical contacts arranged in a pattern matching the first plurality of contacts. A planarizing interposer is interposed between the plate and the printed circuit board and has a pattern of holes matching the pattern of electrical contacts on the printed circuit board and plate. The assembly further includes a plurality of electrical connectors disposed within each of the holes arrayed in a pattern upon the planarizing interposer a plurality conductive bumps or fuzz buttons making electrical contact with the first and second plurality of electrical contacts.