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:
Nov. 14, 2006
Filed:
Feb. 01, 2006
Don Alan Gilliland, Rochester, MN (US);
Ross T. Fredericksen, Mantorville, MN (US);
Don Alan Gilliland, Rochester, MN (US);
Ross T. Fredericksen, Mantorville, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A permeable conductive shield providing protection from electromagnetic interference and electrostatic discharge has a laminated structure suitable for application to the foil side or the component side of a circuit board. The laminated structure includes an array of foam spacers arranged with spaces between them, a layer of foam attached to the top of the spacers, a first insulating sheet on the layer of foam spacers; a conductive sheet on the first insulating sheet, and a second insulating sheet on the conductive sheet. Each of the layers has a multiplicity of through holes aligned with corresponding through holes in the other layers and with the spaces between the foam spacers so as to allow airflow through the structure. The layers are bonded together with intervening adhesive layers. A pressure-sensitive adhesive is applied to the bottom of the spacers for attaching the permeable conductive shield to the circuit board.