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. 27, 1999
Filed:
Nov. 26, 1997
Mutsuhiro Mori, Hitachi, JP;
Ryuichi Saito, Hitachi, JP;
Shin Kimura, Hitachi, JP;
Syuuji Saitoo, Katsuta, JP;
Kiyoshi Nakata, Iwasemachi, JP;
Akira Horie, Katsuta, JP;
Yoshihiko Koike, Hitachi, JP;
Shigeki Sekine, Hitachi, JP;
Hitchi, Ltd., Tokyo, JP;
Abstract
An inverter device includes plural modules, each module being formed by a series circuit having a parallel circuit of a switching device and a first diode, and a parallel circuit of a second switching device and a second diode, allowing a reduced size, high reliability, high frequency switching and low noise. Each of the semiconductor modules includes a plurality of switching device chips and at least one diode chip formed on a metal substrate. Electrode plates are provided in locations of the module adjacent to the switching device chips and the diode chips to facilitate connection of the electrodes of the respective chips to one another and to the outside of the module.