公开(公告)号：US20240128413A1

公开(公告)日：2024-04-18

申请号：US18275863

申请日：2022-02-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuru NITTA ,  Ryosuke SHIGITANI ,  Emi MIYAZAKI ,  Toru HIRANO

IPC: H01L33/50

CPC classification number: H01L33/504 ,  H01L33/507

Abstract: Provided is a wavelength converter including a phosphor ceramic containing a first phosphor that emits fluorescence due to a parity-forbidden transition, and a phosphor part containing a second phosphor that emits fluorescence due to a parity-allowed transition. A main surface of the phosphor ceramic has a concave and convex structure including a plurality of convex parts and a plurality of concave parts. The phosphor part is arranged inside the plurality of concave parts in the phosphor ceramic. Also provided is a light emitting device including the wavelength converter, and a solid-state light source that emits light with which the wavelength converter is irradiated and which has a light emission peak within a wavelength range of 400 nm or more and less than 500 nm.

公开(公告)号：US20170145306A1

公开(公告)日：2017-05-25

申请号：US15319084

申请日：2015-06-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinji SHIBAMOTO ,  Shozo OSHIO ,  Keiichi YAMAZAKI ,  Emi MIYAZAKI ,  Di WEN

IPC: C09K11/77 ,  H01L33/50 ,  C09K11/02

CPC classification number: C09K11/7706 ,  C09K11/025 ,  C09K11/7734 ,  H01L33/50 ,  H01L33/502 ,  H01L2224/48091 ,  H01L2924/181 ,  H01L2924/00012 ,  H01L2924/00014

Abstract: A method of manufacturing a surface-treated phosphor (11) in which the surface of an alkaline-earth silicate phosphor (12) containing a silicate of alkaline-earth metal is covered with a surface treatment layer (13), the method comprising: surface treatment which brings the alkaline-earth silicate phosphor (12) into contact with the surface treatment substance (23) molten or pyrolyzed to form the surface treatment layer (13) on the surface of the alkaline-earth silicate phosphor (12) wherein the surface treatment substance (23) is at least one selected from a group consisting of a sulfate, a phosphate, a carbonate, a borate, a boric acid, a titanate, and a fluoride.