Patent · US Active

Electroluminescent device

US8829779B2 · kind B2 · utility

3Cited by

2References

17Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Peter Josef Schmidt · Aachen, DE
Hans-Helmut Bechtel · Roetgen, DE
Wolfgang Busselt · Roetgen, DE
Baby-Seriyati Schreinemacher · Eynatten, BE

Key dates

Filing date	Mar 13, 2007
Grant date	Sep 9, 2014
Priority date	—
Expiry date	Jun 12, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/249953
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A conversion element (3) comprising a ceramic material (31) with a multiplicity of pores (32) provided for at least the partial absorption of at least one primary radiation (52) and for transforming the primary radiation (52) into at least one secondary radiation (53), wherein the conversion element (3) has a density greater than or equal to 97% of the theoretical solid-state density of the ceramic material (31), and the pores (32) in the conversion element (3) have a diameter substantially between 200 nm and 5000 nm.

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