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. 18, 1989
Filed:
Sep. 18, 1987
Applicant:
Inventors:
C Christiaan Abbas, Baden, CH;
Jens Gobrecht, Gebenstorf, CH;
Jan Voboril, Nussbaumen, CH;
Horst Gruning, Baden, CH;
Assignee:
BBC Brown Boveri AG, Baden, CH;
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 38 ; 357 55 ; 357 81 ;
Abstract
In a semiconductor component, which has various differently doped layers (2, 3, 4, 5) within a semiconductor substrate, an improvement of the electrical properties is achieved, wherein the thickness of the substrate in the current-carrying region is locally reduced by a deep etch well (10), the original mechanical stability of the semiconductor substrate largely remaining retained.