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:
May. 17, 2005
Filed:
Sep. 27, 2002
Mark Pavier, Guildford, GB;
Tim Sammon, Helensburgh, GB;
Mark Pavier, Guildford, GB;
Tim Sammon, Helensburgh, GB;
International Rectifier Corporation, El Segundo, CA (US);
Abstract
A flip chip structure contains laterally spaced semiconductor devices such as MOSFETs in a common chip. A deep trench isolates the devices. Contacts are connected to the source drain and gate electrode (or other electrodes) and are interconnected as required for a circuit function either within the chip or on the support board. Ball contacts are connected to the electrodes. The opposite surface of the chip to that in which the devices are formed receives a copper or other metal layer which is patterned to increase its area for heat exchange. The surface of the copper is coated with black oxide to increase its ability to radiate heat.