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:
Jun. 20, 2000
Filed:
Mar. 24, 1998
Peter Streit, Widen, CH;
Kenneth Thomas, Schaffhausen, CH;
Asea Brown Boveri AG, Baden, CH;
Abstract
A specification is given of a bidirectionally controllable thyristor which is distinguished by improved decoupling between the two thyristor structures. In particular, the intention is that the switched-off structure cannot be triggered in an uncontrolled manner by undesirable migration of charge carriers. This is achieved by virtue of the fact that the degree of shorting of the cathode region increases toward the isolation region. In particular, this can be achieved by virtue of the fact that the density per unit area of the short-circuit regions tends to a maximum value toward the isolation region. The use of a linear, continuous short-circuit region running along the isolation region is particularly favorable. (FIG. 1).