Patent · US Active

Surface-modified conversion phosphors

US8801968B2 · kind B2 · utility

6Cited by

7References

22Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Ralf Petry · Griesheim, DE
Reinhold Rueger · Wittenberg, DE
Tim Vosgroene · Ober-Ramstadt, DE
Holger Winkler · Darmstadt, DE

Key dates

Filing date	Oct 29, 2008
Grant date	Aug 12, 2014
Priority date	—
Expiry date	Dec 25, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/8512
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to surface-modified phosphor particles based on luminescent particles which comprise at least one luminescent compound, where (Ca,Sr,Ba)2SiO4 and other silicates having one or more activator ions, such as Eu, Ce and Mn, are excluded as luminescent compounds, and where at least one inorganic layer comprising oxides/hydroxides of Si, Al, Zr, Zn, Ti and/or mixtures thereof and an organic coating of organosilanes or polyorganosiloxanes (silicones) and/or mixtures thereof are applied to the luminescent particles, and to a production process.

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