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. 05, 1988
Filed:
Aug. 19, 1983
Hubert Patalong, Munich, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A light-firable thyristor has two emitter layers and two base layers therebetween. One of the emitter layers comprises a plurality of partial layers one of which has a light-active semiconductor region. Each of the emitter layers has an additional region therein which in combination with the partial layer and the base layer adjacent the partial layer forms a gate controlled MIS structure for providing a controllable emitter short circuit path between each partial layer in the base layer adjacent therewith. The short circuit path is opened during initial device firing to provide increased sensitivity but which is shorted at other times to provide operational stability.