Patent · US Active

Surface-modified silicate luminophores

US8945421B2 · kind B2 · utility

7Cited by

5References

13Claims

0Family size

Assignees

Seoul Semiconductor Co., Ltd. · KR
LITEC-LP Gmbh · DE

Inventors

Chung Hoon Lee · Ansan-si, KR
Walter Tews · Greifswald, DE
Gundula Roth · Levenhagen, DE
Detlef Starick · Berlin, DE

Key dates

Filing date	Jul 15, 2011
Grant date	Feb 3, 2015
Priority date	—
Expiry date	Oct 21, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2998
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A surface-modified silicate luminophore includes a silicate luminophore and a coating includes at least one of (a) a fluorinated coating including a fluorinated inorganic agent, a fluorinated organic agent, or a combination of fluorinated inorganic and organic agents, the fluorinated coating generating hydrophobic surface sites and (b) a combination of the fluorinated coating and at least one moisture barrier layer. The moisture barrier layer includes MgO, Al2O3, Y2O3, La2O3, Gd2O3, Lu2O3, and SiO2 or the corresponding precursors, and the coating is disposed on the surface of the silicate luminophore.

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