Patent · US Active

Light emitting device

US8847254B2 · kind B2 · utility

6Cited by

59References

13Claims

0Family size

Assignee

Seoul Semiconductor Co., Ltd. · KR

Inventors

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

Key dates

Filing date	Dec 15, 2006
Grant date	Sep 30, 2014
Priority date	—
Expiry date	Dec 15, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH10H29/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The present invention relates to a light emitting device comprising at least one light emitting diode which emits light in a predetermined wavelength region, copper-alkaline earth metal based inorganic mixed crystals activated by rare earths, which include copper-alkaline earth silicate phosphors which are disposed around the light emitting diode and absorb a portion of the light emitted from the light emitting diode and to emit light different in wavelength from the absorbed light.

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