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:
Aug. 20, 1985
Filed:
Nov. 14, 1983
Applicant:
Inventors:
Donald L Miller, Penn Township, Westmoreland County, PA (US);
John X Przybysz, Penn Hills Township, Allegheny County, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 38 ; 357 30 ; 357 55 ; 357 86 ; 357 51 ;
Abstract
The present invention is directed to a light-triggered thyristor having a high di/dt, high dv/dt, and high photosensitivity. The thyristor has a three-stage cathode emitter gating structure with integrated current limiting resistors. The current limiting resistors are defined by moats etched in the cathode base region. The moats also cause a 'turn-on ' current to flow through substantially all of the cathode base region.