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:
Jan. 05, 1988
Filed:
Nov. 27, 1984
Applicant:
Inventors:
Hideo Matsuda, Yokohama, JP;
Yoshiaki Tsunoda, Kawasaki, JP;
Takashi Fujiwara, Yokohama, JP;
Yasunori Usui, Kawasaki, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 38 ; 357 43 ; 357 2314 ; 357 30 ; 357 2312 ; 357 86 ;
Abstract
A semiconductor device has a main GTO thyristor section, an auxiliary GTO thyristor section and a MOS transistor section. The main GTO thyristor section is turned on and off in accordance with a gate signal supplied to its gate terminal. The auxiliary GTO thyristor section supplies an igniting signal to the gate of the main GTO thyristor in accordance with an optical signal. The MOS transistor supplies an extinguishing signal to the gate of the main GTO thyristor section in accordance with an optical signal supplied to it.