Title:
WAVELENGTH CONVERSION MEMBER AND LIGHT EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/063115
Kind Code:
A1
Abstract:
A wavelength conversion member of the present invention includes a phosphor plate including an inorganic base material and a phosphor dispersed in the inorganic base material, and a reflective multilayer film which is formed on one surface of the phosphor plate and in which a plurality of inorganic material films having different refractive indexes is laminated, the wavelength conversion member being configured so that in L*a*b* color coordinates on the surface of the reflective multilayer film formed on the one surface of the phosphor plate when measured in accordance with JIS Z 8781-4, the a* value satisfies -20 to 0, and/or the b* value satisfies 20 to 60.
Inventors:
TAKEDA YUSUKE (JP)
KUBOTA YUKI (JP)
NOMURA KENJI (JP)
KUBOTA YUKI (JP)
NOMURA KENJI (JP)
Application Number:
PCT/JP2023/034197
Publication Date:
March 28, 2024
Filing Date:
September 21, 2023
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
G02B5/20; G02B5/28; H01L33/50; H01L33/60
Domestic Patent References:
| WO2014156550A1 | 2014-10-02 | |||
| WO2011129135A1 | 2011-10-20 |
Foreign References:
| JP2012226986A | 2012-11-15 | |||
| JP2017194706A | 2017-10-26 | |||
| JP2019135756A | 2019-08-15 | |||
| JP2016021582A | 2016-02-04 | |||
| JP2004506459A | 2004-03-04 | |||
| JP2021057480A | 2021-04-08 |
Attorney, Agent or Firm:
HAYAMI Shinji (JP)
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