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. 23, 2007
Filed:
Feb. 26, 2001
Johannes Stollenwerk, Rösrath, DE;
Johannes Stollenwerk, Rösrath, DE;
Cobes GmbH Nachrichten- und Datentechnik, Weisweil, DE;
Abstract
In an ion etching method for reducing a substrate thickness, an electric arc is generated in a vacuum chamber such that the electric arc is locally separated from the substrate and circulates about the substrate. A plasma of a supplied etching gas is produced by the electric arc, and the ions of the etching gas are accelerated onto the substrate by an electric potential. The employed device has a vacuum chamber, an etching gas supply, and first and second electrodes supplied with direct or alternating voltage for generating the electric arc that produces the plasma of the etching gas. The first electrode is ring-shaped and the second electrode is arranged centrally to the ring of the first electrode. A magnetic coil creates a migrating magnetic field such that the electric arc is locally separated from the substrate and circulates about the substrate in a carousel fashion.