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. 27, 2013
Filed:
Jun. 29, 2010
Katsunori Azuma, Hitachi, JP;
Mutsuhiro Mori, Mito, JP;
Michiaki Hiyoshi, Yokohama, JP;
Seiichi Hayakawa, Hitachi, JP;
Koji Sasaki, Mito, JP;
Isamu Yoshida, Fujisawa, JP;
Katsunori Azuma, Hitachi, JP;
Mutsuhiro Mori, Mito, JP;
Michiaki Hiyoshi, Yokohama, JP;
Seiichi Hayakawa, Hitachi, JP;
Koji Sasaki, Mito, JP;
Isamu Yoshida, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A power module includes an upper arm circuit unit and a lower arm circuit unit each having a power semiconductor element; an insulating substrate with the units mounted on one surface thereof; a metal base bonded onto the other surface of the substrate opposite to the one surface where the units are mounted; a first connection conductor for supplying a high potential to the upper unit from outside; a second connection conductor for supplying a low potential to the lower unit from outside; an insulating sheet interposed between the conductors; and a resin case disposed on the metal base to support the conductors, the conductors are flat conductors and laminated with the sheet sandwiched therebetween; the sheet extends from one end of the laminated structure to secure the creepage distance between the conductors; and the case is furnished with a recess for containing the laminated structure.