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:
Aug. 07, 2018
Filed:
Jul. 20, 2017
International Business Machines Corporation, Armonk, NY (US);
Martin Beaumier, Granby, CN;
Yves Dallaire, Lac-Brome, CN;
Melania C. Doll, Armonk, NY (US);
Michael Gaynes, Armonk, NY (US);
Edward J. Yarmchuk, Armonk, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A contact spring for placement in a gap between an electrical substrate opposite a lid (electrically conductive heat spreader) of an electronic device comprises a spring that both conducts heat from the substrate to the lid and electrically connects the substrate and lid. The spring comprises a flat single element configured as a plurality of polygons, providing contact points, the spring substantially lying in a plane and extending substantially in a straight line, or a spiral. The spring in an electronic device such as a flip chip ball grid array having this lid and an electrical substrate with EMI emitters: (1) provides low impedance electrical connection between the electronic circuit and lid; (2) grounds the lid to the electronic circuit; (3) minimizes EMI in the electronic circuit; (4) conducts heat from the electronic circuit to the lid; or any one or combination of the foregoing features (1)-(4).