Patent · US Active

Luminescent material particles comprising a coating and lighting unit comprising such luminescent material

US9334442B2 · kind B2 · utility

2Cited by

4References

13Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Georg Greuel · Roetgen, DE
Thomas Juestel · Aachen, DE
Jagoda KUC · Neuchâtel, CH

Key dates

Filing date	Jun 25, 2012
Grant date	May 10, 2016
Priority date	—
Expiry date	Nov 26, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01J61/44
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention provides a a luminescent material comprising particles of UV-luminescent material having a coating, wherein the coating (a “multi-layer coating”) comprises a first coating layer and a second coating layer, wherein the first coating layer is between the luminescent material and the second coating layer, and wherein in a specific embodiment the second coating layer comprises an alkaline earth oxide, especially MgO. Further, the invention provides a lighting unit comprising such luminescent material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.