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:
Jan. 25, 2000
Filed:
Jun. 28, 1999
Paul A Rubens, Salem, OR (US);
Charlie W Gilson, Philomath, OR (US);
Brian G Spreadbury, Corvallis, OR (US);
Horst F Irmscher, Corvallis, OR (US);
Tim J Jondrow, Corvallis, OR (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A heat conductive substrate is mounted within a through-opening of a printed circuit board. An integrated circuit then is mounted to one side of the heat conductive substrate, while a heat sink is fixed in thermal contact to the other side of the substrate. There is no direct thermal contact between the IC and the PC board The heat conductive substrate is mounted to the PC board by applying a controlled pressure to normal surfaces of multiple portions of the substrate. Such pressure reducing the thickness and expands the area of the pressed portions locking the substrate to the PC board. An air gap occurs between the substrate and the PC board everywhere except for the pressed regions of the substrate. Such pressed regions occur along the periphery of the substrate.