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. 29, 1989
Filed:
Sep. 08, 1987
Applicant:
Inventors:
Bruno Broich, Baden, CH;
Horst Gruning, Baden, CH;
Assignee:
BBC Brown Boveri AG, Baden, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 38 ; 357 36 ; 357 56 ; 357 65 ; 357 68 ; 357 51 ;
Abstract
In a power semiconductor component having a so-called 'recessed-gate' structure on the cathode side, the large-area control structure consisting of cathode fingers (1) and a lower-lying gate level (2) is divided into a plurality of small-area control zones (25a, 25b) which in each case by themselves are soldered to a cathode block (13a, 13b). This creates high-power components without the possibility of excessive thermal stresses occurring during load cycles.