公开(公告)号：US20190341530A1

公开(公告)日：2019-11-07

申请号：US16472884

申请日：2017-10-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tatsuya OKUNO ,  Masahiro NAKAMURA ,  Youshin LEE

IPC: H01L33/50 ,  C09K11/08 ,  G02B5/20

Abstract: A wavelength converter includes: inorganic phosphor particles; translucent non-fluorescent light emitting inorganic particles; and an inorganic binder, wherein the inorganic phosphor particles and the translucent non-fluorescent light emitting inorganic particles are bound to each other by the inorganic binder, an average particle size of the translucent non-fluorescent light emitting inorganic particles is equal to or more than an average particle size of the inorganic phosphor particles, thermal conductivity of the translucent non-fluorescent light emitting inorganic particles is larger than thermal conductivity of the inorganic phosphor particles, a refractive index of the translucent non-fluorescent light emitting inorganic particles stays within a range of ±6% of a refractive index of the inorganic phosphor particles, and fluorescence is emitted upon receiving excitation light.

公开(公告)号：US20190027656A1

公开(公告)日：2019-01-24

申请号：US16071906

申请日：2017-01-31

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Youshin LEE ,  Shozo OSHIO ,  Tatsuya OKUNO ,  Takeshi ABE ,  Masahiro NAKAMURA

IPC: H01L33/50 ,  C09K11/08 ,  H01L33/16 ,  H01L33/58

CPC classification number: H01L33/502 ,  C09K11/08 ,  F21S2/00 ,  F21V9/30 ,  G02B5/20 ,  H01L33/16 ,  H01L33/50 ,  H01L33/58 ,  H01S5/022 ,  Y02B20/181

Abstract: A light emitting device 1 includes: a substrate 30; and a phosphor layer 40 composed in such a manner that a large number of phosphor particles 60 are adhered onto a flat surface 32 of the substrate 30. At least one of the phosphor particles 60 is a polyhedral phosphor particle 65 that is monodispersed, is derived from a crystal structure of garnet and has facets, and a median particle size D50 of the polyhedral phosphor particle 65 is 30 μm or more and a maximum thickness of the phosphor layer 40 or less. It is preferable that at least one of the phosphor particles 60 adhered onto the flat surface 32 of the substrate 30 is the polyhedral phosphor particle 65 that is monodispersed, is derived from the crystal structure of the garnet, and has the facets.

公开(公告)号：US20200255729A1

公开(公告)日：2020-08-13

申请号：US15774552

申请日：2016-12-09

Applicant: Panasonic Intellectual Property Management Co., Ltd

Inventor： Tatsuya OKUNO ,  Masahiro NAKAMURA ,  Youshin LEE ,  Shunpei FUJII

IPC: C09K11/64 ,  C09K11/02 ,  F21V9/30

Abstract: A wavelength converter includes: a plurality of phosphor particles; and a binder layer that adheres the plurality of adjacent phosphor particles to one another, the binder layer being composed of a nanoparticle-adhered body in which a plurality of nanoparticles having an average particle size D50 of 1 nm or more and less than 100 nm are adhered to one another.

公开(公告)号：US20190280166A1

公开(公告)日：2019-09-12

申请号：US16427243

申请日：2019-05-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Youshin LEE ,  Shozo OSHIO ,  Tatsuya OKUNO ,  Takeshi ABE ,  Masahiro NAKAMURA

IPC: H01L33/50 ,  H01L33/58 ,  H01L33/16 ,  H01S5/022 ,  F21V9/30 ,  C09K11/08 ,  G02B5/20 ,  F21S2/00

Abstract: A light emitting device 1 includes: a substrate 30; and a phosphor layer 40 composed in such a manner that a large number of phosphor particles 60 are adhered onto a flat surface 32 of the substrate 30. At least one of the phosphor particles 60 is a polyhedral phosphor particle 65 that is monodispersed, is derived from a crystal structure of garnet and has facets, and a median particle size D50 of the polyhedral phosphor particle 65 is 30 μm or more and a maximum thickness of the phosphor layer 40 or less. It is preferable that at least one of the phosphor particles 60 adhered onto the flat surface 32 of the substrate 30 is the polyhedral phosphor particle 65 that is monodispersed, is derived from the crystal structure of the garnet, and has the facets.

公开(公告)号：US20190169494A1

公开(公告)日：2019-06-06

申请号：US16092453

申请日：2017-04-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masahiro NAKAMURA ,  Tatsuya OKUNO ,  Youshin LEE

IPC: C09K11/02 ,  C09K11/77

Abstract: A wavelength conversion member includes: a substrate; and a wavelength converter that converts color of incident light, the wavelength converter being provided on a surface of the substrate. The wavelength converter has: inorganic phosphor particles which convert the color of the incident light; and a binder layer that fixes the inorganic phosphor particle to one another, the binder layer including at least one type of metal oxides with a melting point of 800° C. or less. The substrate and the wavelength converter are fixed to each other by the binder layer of the wavelength converter.