Patterned thin-film wavelength converter and method of making same

US9373761B2 · kind B2 · utility

Assignee

• OSRAM SYLVANIA Inc. · US

Inventors

• Darshan Kundaliya · Beverly, US
• Jörg Frischeisen · Birkenfeld, DE
• Alan Lenef · Belmont, US
• Jörg Erich Sorg · Regensburg, DE
• Norwin von Malm · Nittendorf, DE

Key dates

• Filing date: Sep 23, 2014
• Grant date: Jun 21, 2016
• Expiry date: Sep 23, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/882

Abstract

There is herein described a patterned thin-film wavelength converter which comprises a substrate having a first patterned surface with a first pattern, and a thin film deposited on the first patterned surface. The thin film consists of a wavelength converting material and has a second patterned surface that is distal from the substrate. The second patterned surface has a second pattern that is substantially the same as the first pattern of the substrate. An advantage of the patterned thin-film wavelength converter is that post-deposition processing is not required to produce a textured surface on the wavelength converting material. A method of making the patterned thin-film wavelength converter is also described.