Method for the application of a filter on a web

US8323734B2 · kind B2 · utility

Assignee

• Applied Materials GmbH & Co. KG · DE

Inventors

• Gerd Hoffmann · Bruchköbel, DE
• Rainer Ludwig · Bitburg, DE
• Hans-Georg Lotz · Grundau, DE
• Gerhard Steiniger · Ronneburg, DE

Key dates

• Filing date: Dec 9, 2010
• Grant date: Dec 4, 2012
• Expiry date: May 16, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B5/288
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A Fabry-Perot filter is applied as a thin coating on a film, for example, a packaging film, and permits interesting color effects. The coating has a layered construction in which both reflecting layers of the filter may be made of aluminum and the intermediate layer between the reflecting layers may be made of aluminum oxide.