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Patent Searching and Data


Title:
PHOSPHOR AND PRODUCTION METHOD THEREFOR, PHOSPHOR SHEET, AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/021756
Kind Code:
A1
Abstract:
Provided is a phosphor which is represented by general formula (1) and which contains at least a fluorescent substance that satisfies conditions (1)-(3). General formula (1): (BaySr1-y)1-xGa2S4:Eux (in general formula (1), 0.025≤x≤0.20 and 0.15≤y≤0.49 are satisfied). Condition (1): The maximum peak of the diffraction intensity in an XRD pattern is a diffraction peak that appears at a diffraction angle 2θ=23.7° to 24.1° and is attributed to the (422) plane of SrGa2S4. Condition (2): The second highest peak of the diffraction intensity appears at a diffraction angle 2θ=38.1° to 38.5° and is attributed to the (444) plane of SrGa2S4. Condition (3): Diffraction peaks having a relative intensity of 5-20% of the maximum peak of the diffraction intensity appear at a diffraction angle 2θ=30.0° to 30.4°.

Inventors:
YAGIHASHI KAZUHIRO (JP)
Application Number:
JP2018/025116
Publication Date:
January 31, 2019
Filing Date:
July 02, 2018
Export Citation:
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Assignee:
DEXERIALS CORP (JP)
International Classes:
C09K11/62; C09K11/08; H01L33/50
Domestic Patent References:
WO2015146231A12015-10-01
WO2011033830A12011-03-24
Foreign References:
US20080259251A12008-10-23
JP2011236310A2011-11-24
JP2017026905A2017-02-02
JP2007335399A2007-12-27
JP2008274028A2008-11-13
Other References:
KO KI-YOUNG ET AL.: "Cathodoluminescence and Longevity Properties of Potential Sr1-XMXGa2S4:Eu(M = Ba or Ca) Green Phosphors for Field Emission Displays", BULLETIN- KOREAN CHEMICAL SOCIETY, vol. 29, no. 4, April 2008 (2008-04-01), pages 822 - 826, XP055677370
Attorney, Agent or Firm:
HIROTA, Koichi et al. (JP)
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