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:
Feb. 05, 1985
Filed:
Mar. 12, 1984
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
Light-controlled thyristor, including a semiconductor body having a surface, a first zone being of a given conduction type and having a given depth and being adjacent to the surface of the body, a second zone of the given conduction type having a region intended for exposure, a third zone of a conduction type opposite to the given type being disposed under the first and second zones and having a part thereof emerging to the surface of the body between the first and second zones and having a depression formed therein containing the region intended for exposure, electrodes contacting the first and second zones, said second zone having a first and a second subzone, the first subzone having the given depth and being disposed between the part of the third zone emerging to the surface of the body and the depression, the first subzone being in contact with one of the electrodes, the second subzone being the region intended for exposure in the depression and being formed by implanted ions, the second subzone being disposed parallel to the surface of the body and being electrically connected to the first subzone.