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:
Mar. 18, 1997
Filed:
Dec. 14, 1994
Edward O Donner, Poughkeepsie, NY (US);
Michael L Zumbrunnen, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A new approach to providing thousands of contacts between electronic packages and their next package level by use of small formed spring contact elements (SCE) retained within a interposer structure or soldered directly into a printed circuit board or onto the module is disclosed. Each contact element can be either a signal or power line and, for improved electrical performance, alternate both horizontally and vertically in an orthogonal grid such that no signalling is adjacent to another signal. The spring contact elements (SCE) have multiple cross-sectional shapes and are pre-formed for improved mechanical performance. A retainer contains the multiplicity of SCE while providing a air plenum for improved thermal performance.