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:
Sep. 12, 1989
Filed:
Sep. 23, 1987
Applicant:
Inventors:
Assignee:
Zaidan Hojin Handotai Kankyu Shinkokai, Sendai, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 38 ; 357 20 ; 357 22 ; 357 30 ; 357 46 ; 357 55 ; 357 56 ; 357 86 ;
Abstract
An integrated light-triggered and light-quenched static induction thyristor and fabrication process thereof adapted in such a manner that an integrated SIPT operates in the normal mode in order to enhance current gain, tail current generated at the light-quenching time is reduced in order to enhance turn-off gain, and a buried-gate type of light-triggered static induction thyristor and a photo-darlington circuit composed of a first and second static induction phototransistors are integrated on a high-resistivity substrate in order to permit manufacturing said thyristor compact as a whole in facilitated processes.