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:
Mar. 04, 1997
Filed:
Mar. 13, 1995
Applicant:
Inventors:
Yoshiaki Aizawa, Kanagawa-ken, JP;
Toshimitu Katoh, Kanagawa-ken, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257132 ; 257119 ; 257121 ; 257212 ;
Abstract
A bidirectional semiconductor switch employs two insulated gate semiconductor devices such as insulated gate bipolar transistors (IGBTs) that are connected oppositely in parallel, with the collector of one of the IGBTs being connected to the emitter of the other. The gates of the IGBTs are biased by gate controllers that are potentially independent of each other. The semiconductor switch is capable of controlling a direct current as well as an alternating current at a low ON-state voltage, reducing a conduction loss, and improving efficiency.