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Title:
LIGHT-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/044288
Kind Code:
A1
Abstract:
A light-emitting device, provided with: a solid light-emitting element emitting excitation light that has a maximum intensity value in the wavelength region of 440 nm to less than 470 nm; and a wavelength conversion member 100 obtained by combining a first wavelength converter 1 containing a first phosphor 1A, which is a particulate phosphor and which is an inorganic phosphor activated by Ce3+, and a second wavelength converter 2 containing a second phosphor, which is an inorganic phosphor activated by Ce3+. The first phosphor emits a first fluorescent light, which has a maximum intensity value in the wavelength region of 470 nm to less than 530 nm, and the second phosphor emits a second fluorescent light, which has a maximum intensity value in the wavelength region of 580 nm to less than 660 nm. The first wavelength converter has a dispersed state in which the particles of the first phosphor are not in contact with each other.

Inventors:
ABE TAKESHI
OSHIO SHOZO
Application Number:
PCT/JP2018/027810
Publication Date:
March 07, 2019
Filing Date:
July 25, 2018
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01S5/02; C09K11/08; C09K11/79; C09K11/80; G02B5/20; H01L33/50
Domestic Patent References:
WO2016092743A12016-06-16
WO2016092743A12016-06-16
Foreign References:
JP2017521867A2017-08-03
JP2007126536A2007-05-24
JP2015130459A2015-07-16
JP2014207436A2014-10-30
JP2015503180A2015-01-29
US20070262288A12007-11-15
US20120091494A12012-04-19
JP2017163575A2017-09-14
Other References:
See also references of EP 3678266A4
Attorney, Agent or Firm:
ITO Masakazu et al. (JP)
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