PHOSPHOR POWDER, PHOSPHOR-CONTAINING COMPOSITION, PHOSPHOR, LIGHT-EMITTING ELEMENT, AND LIGHT-EMITTING DEVICE

WIPO Patent Application WO/2024/071305

A1

Provided is a phosphor powder that can be uniformly filled into a package rib even in the case of a micro package rib, and that makes it possible to fabricate a light-emitting element demonstrating a high EQE. Further, the present invention also provides: a phosphor-containing composition comprising such a phosphor powder; a phosphor; a light-emitting element; and a light-emitting device. This phosphor powder comprises a plurality of phosphor particles and has a cumulative 80% diameter (D80) in a volumetric particle size distribution, as measured by a laser diffraction particle size distribution measurement method, of 30 μm or less. Further, this phosphor powder has a grain gauge evaluation value of 10 μm or more and 50 μm or less, the grain gauge evaluation value being obtained by measuring, in accordance with JIS K 5600-2-5: 1999, a slurry obtained by adding the phosphor powder at a ratio of 40 parts by mass with respect to 100 parts by mass of a silicone resin, and then mixing by using a revolution-rotation type stirring and defoaming device.

KIMURA HIROTO (JP)
SASAKURA ASUKA (JP)
OZAWA IKUHIRO (JP)
TAKAHASHI TSUYOSHI (JP)

PCT/JP2023/035422

April 04, 2024

September 28, 2023

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MITSUI MINING & SMELTING CO LTD (JP)

C09K11/62; C09K11/02; C09K11/56; H01L33/50

WO2009136505A1	2009-11-12
WO2019107285A1	2019-06-06
WO2021193183A1	2021-09-30
WO2020054351A1	2020-03-19
WO2021193182A1	2021-09-30
WO2020054350A1	2020-03-19
WO2022118600A1	2022-06-09
WO2021211181A1	2021-10-21

JP2011236310A

2011-11-24

SEKIGUCHI Masao et al. (JP)

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