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. 20, 1998
Filed:
Jun. 27, 1995
Applicant:
Inventors:
Friedhelm Bauer, Suhr, CH;
Simon Eicher, Zurich, CH;
Assignee:
Asea Brown Boveri AG, Baden, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
257147 ; 257149 ; 257152 ; 257153 ; 257163 ; 257172 ;
Abstract
A GTO is specified which, starting from the anode-side main surface (2), comprises an anode emitter (6), a barrier layer (11), an n-base (7), a p-base (8) and a cathode emitter (9). The anode emitter (6) is designed as a transparent emitter and has anode short-circuits (10). By virtue of the combination of the barrier layer, the transparent anode emitter and the anode short-circuits, a GTO is obtained which can be operated at high switching frequencies, the substrate thickness of which can be reduced and which nevertheless exhibits no increase in the switching losses.