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:
Jul. 29, 2008
Filed:
Oct. 03, 2006
Masuo Koga, Fukuoka, JP;
Tetsuo Mizoshiri, Tokyo, JP;
Yukimasa Hayashida, Fukuoka, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A first insulating substrate is formed on a heat sink, and a semiconductor element is formed thereon. An insulating resin casing is formed so as to cover the first insulating substrate and the semiconductor element. A second insulating substrate is mounted inside the insulating resin casing apart from the first insulating substrate. On the second insulating substrate, a resistance element that functions as a gate balance resistance is fixed by soldering. The second insulating substrate on which the resistance element was thus mounted was made apart from the first insulating substrate on which the semiconductor element was mounted, and was mounted on the side of the insulating resin casing.