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. 07, 2013
Filed:
Nov. 29, 2007
Kouji Takahashi, Isesaki, JP;
Yusuke Igarashi, Isesaki, JP;
Jun Sakano, Kiryuu, JP;
SANYO Electric Co., Ltd., Moriguchi-shi, JP;
SANYO Semiconductor Co., Ltd., Ora-gun, JP;
Abstract
A circuit device of the present invention includes a wiring board, and circuit elements such as semiconductor elementsmounted on the wiring board. The wiring boardincludes: a conductive pattern, which is a metal core layer; a first insulating layerand a second insulating layerrespectively covering an upper surface and a lower surface of the conductive pattern; and a first wiring layerand a second wiring layerformed respectively on an upper surface of the first insulating layerand a lower surface of the second insulating layer. The conductive patternis made of rolled metal. With this configuration, the thermal resistance of the conductive pattern, which is the metal core, is reduced, and the thermal dissipation of the entire device can be improved.