Method of manufacturing a part of a color ring and a part of a color ring

US8998455B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Ulrich Weichmann · Aachen, DE
• Yuri Aksenov · Eindhoven, NL
• Johannes Baier · Harsewinkel, DE
• Jan Renier Marie Hochstenbach · Baexem, NL
• Uwe Mackens · Aachen, DE
• Joachim Opitz · Aachen, DE
• Peter Josef Schmidt · Aachen, DE

Key dates

• Filing date: Nov 23, 2011
• Grant date: Apr 7, 2015
• Expiry date: Nov 23, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2237/78
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method 200 of manufacturing a (part of) color ring is provided. The color ring converts a color of light emitted by a light emitter into at least one other color. The method (200) comprising the steps of: i) pressing (102) a first ring body of a first granulated precursor comprising a first luminescent material for converting the color of the light of the light emitter into a first one of the at least one other color, and ii) sintering (104) the first ring body for obtaining a first ceramic ring. The color ring comprises at least a segment of the first ceramic ring. Further, the method may comprises the steps of: iii) pressing (208) a second ring body of a second granulated precursor, wherein the first luminescent material is absent, iv) sintering (210) the second ring body for obtaining a second ceramic ring, v) segmenting (206) the first ceramic rings in at least two parts and segmenting (212) the second ceramic ring in at least two parts, and vi) forming (214) at least a part of the color ring by coupling a part of the first ceramic ring and a part of the second ceramic ring.