Title:
FLUORESCENT SUBSTANCE, LIGHT EMITTING DEVICE, SURFACE LIGHT SOURCE DEVICE, DISPLAY DEVICE AND ILLUMINATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/099800
Kind Code:
A2
Abstract:
One aspect of the present invention provides a fluorescent substance comprising oxynitride which has a β-type Si3N4 crystal structure, and which is expressed by the composition formula Si6-zAlzOzN8-z:Eua,Mb, wherein M is at least Sr or Ba, an amount (a) of Eu falls within the range of 0.1 to 5 mol%, an amount (b) of M falls within the range of 0.1 to 10 mol%, and a composition ratio (z) of Al satisfies 0.1 < z < 1. The fluorescent substance emits light having a peak in a wavelength range of 500 to 550nm upon exposure to light from an excitation source.
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Inventors:
YOON CHANG BUN (KR)
WON HYONG SIK (KR)
YOON CHUL SOO (KR)
WON HYONG SIK (KR)
YOON CHUL SOO (KR)
Application Number:
PCT/KR2011/000920
Publication Date:
August 18, 2011
Filing Date:
February 11, 2011
Export Citation:
Assignee:
SAMSUNG LED CO LTD (KR)
YOON CHANG BUN (KR)
WON HYONG SIK (KR)
YOON CHUL SOO (KR)
YOON CHANG BUN (KR)
WON HYONG SIK (KR)
YOON CHUL SOO (KR)
International Classes:
C09K11/80; H01L51/50; H05B33/00
Foreign References:
| KR20070021140A | 2007-02-22 | |||
| KR20090113354A | 2009-10-30 | |||
| KR20050111666A | 2005-11-28 | |||
| KR20070116697A | 2007-12-10 |
Attorney, Agent or Firm:
C&S LOGOS PATENT AND LAW OFFICE (KR)
특허법인 씨엔에스·로고스 (KR)
특허법인 씨엔에스·로고스 (KR)
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Claims: