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. 12, 2003
Filed:
Dec. 20, 2001
Sven Lanzerstorfer, Feldkirchen, AT;
Hubert Maier, Villach, AT;
Infineon Technologies AG, Munich, DE;
Abstract
A field-effect-controllable semiconductor component and a method for fabricating an electrode of the component includes a semiconductor body having a first zone of a first conduction type, a second zone of a second conduction type disposed above the first zone, and at least one trench extending into the semiconductor body in a vertical direction through the second zone, applying a first insulation layer at least in a region of the second zone in the trench, applying a first layer of electrode material to the semiconductor body, applying an intermediate layer to the first layer, applying a second layer of electrode material to the intermediate layer, removing a portion of the second layer and of the intermediate layer to leave the intermediate layer and the second layer at least partly in the trench, and patterning the first layer.