System for coating substrates with magnetron cathodes

US5196105A · kind A · utility

Assignee

• Leybold GmBH · DE

Inventors

• Albert Feuerstein · Neuberg, DE
• Dieter Hofmann · Augsburg, DE
• Hans Schussler · Bad Marienberg, DE

Key dates

• Filing date: Mar 6, 1991
• Grant date: Mar 23, 1993
• Expiry date: Mar 6, 2011

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01J37/3405
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

The present invention provides a system for coating substrates which are arranged within a vacuum chamber on a substrate holder which is situated at least partially in a coating range on whose both sides magnetron cathodes with magnet systems of permanent magnets with outside poles and inside poles are disposed, wherein the polarity of the magnet systems of the magnetron cathodes is such that poles of opposed polarity are opposite one another on both sides of the coating range; and on opposite sides of the coating range at least one magnet coil is disposed, and the oppositely situated magnet coils being connectable to a power source in such a manner that the fields of the magnet coils together make up a closed magnetic field, and that the polarity of the outside poles of the permanent magnet systems and of the magnet coils is the same.