公开(公告)号：US20220010202A1

公开(公告)日：2022-01-13

申请号：US17371342

申请日：2021-07-09

Applicant: NICHIA CORPORATION

Inventor： Toshiaki YAMASHITA

IPC: C09K11/02 ,  B28B11/24 ,  C09K11/08

Abstract: A method of manufacturing a wavelength conversion member that includes a sintered body having a light incidence face, a light emission face, and a light reflecting face different from the light incidence face and the light emission face, the method comprising: providing a sintered body containing inorganic particles and phosphor particles, and forming a plurality of recessed portions on the light reflecting face of the sintered body, which comprises acid treating the sintered body.

公开(公告)号：US20210313767A1

公开(公告)日：2021-10-07

申请号：US17222548

申请日：2021-04-05

Applicant: NICHIA CORPORATION

Inventor： Toshiaki YAMASHITA

IPC: H01S5/06 ,  H01S5/024 ,  H01S5/22

Abstract: A light emitting device includes: a light emitting element; and a wavelength conversion member including: a wavelength conversion part configured to convert light emitted from the light emitting element into light having a different wavelength and to output the light having the different wavelength, an enclosing part enclosing the wavelength conversion part, and a conducting layer disposed on the enclosing part and surrounding the wavelength conversion part. The conducting layer comprises ruthenium oxide.

公开(公告)号：US20200332984A1

公开(公告)日：2020-10-22

申请号：US16853045

申请日：2020-04-20

Applicant: NICHIA CORPORATION

Inventor： Toshiaki YAMASHITA ,  Akinori HARA

IPC: F21V9/32 ,  H01S5/022 ,  H01S5/024

Abstract: A wavelength conversion part includes: a wavelength conversion member formed primarily of a ceramic material, wherein the wavelength conversion member has a lower face and one or more lateral faces; an enclosing member formed primarily of a ceramic material, wherein the enclosing member has a lower face, and wherein the enclosing member surrounds the one or more lateral faces of the wavelength conversion member; and a heat dissipating member having a upper face, wherein the heat dissipating member is fixed to the wavelength conversion member, and wherein the upper face of the heat dissipating member opposes the lower face of the wavelength conversion member and the lower face of the enclosing member. The lower face of the wavelength conversion member projects towards the heat dissipating member beyond the lower face of the enclosing member.

公开(公告)号：US20190101276A1

公开(公告)日：2019-04-04

申请号：US16207662

申请日：2018-12-03

Applicant: NICHIA CORPORATION

Inventor： Toshiaki YAMASHITA

IPC: F21V29/502 ,  F21V9/30 ,  F21S41/16 ,  F21S41/14 ,  H04N9/31 ,  G03B21/20

CPC classification number: F21V29/502 ,  F21S41/14 ,  F21S41/16 ,  F21V9/30 ,  F21Y2115/30 ,  G02F2001/133614 ,  G03B21/204 ,  H04N9/31

Abstract: A wavelength conversion member includes a light-reflecting member and a phosphor-containing layer. The light-reflecting member is configured to reflect laser light. The phosphor-containing layer includes a base component provided on the light-reflecting member and one or more projecting portions protruding from the base component toward a direction away from the light-reflecting member. Each of the one or more projecting portions is configured to be irradiated with laser light. Each of the one or more projecting portions is smaller than the base component and larger than a spot of the laser light to be irradiated.23

公开(公告)号：US20240063349A1

公开(公告)日：2024-02-22

申请号：US18447299

申请日：2023-08-09

Applicant: NICHIA CORPORATION

Inventor： Toshiaki YAMASHITA

IPC: H01L33/50 ,  H01L33/46 ,  H01L33/48

CPC classification number: H01L33/507 ,  H01L33/46 ,  H01L33/486

Abstract: A light-emitting device includes first and second light-emitting elements, an optical member, and a wavelength conversion member. The optical member includes an optical action layer configured to reflect or transmit light in accordance with a wavelength of the light. The optical action layer is configured to reflect first emission light emitted from the first light-emitting element and second emission light emitted from the second light-emitting element. The wavelength conversion member is configured to receive the first emission light reflected by the optical action layer of the optical member, to convert a wavelength of the first emission light, and to emit a wavelength-converted light having a converted wavelength. The optical action layer of the optical member is configured to transmit the wavelength-converted light. The optical member is arranged so that the wavelength-converted light and the second emission light are emitted from an upward-facing surface of the optical action layer.

公开(公告)号：US20230299248A1

公开(公告)日：2023-09-21

申请号：US18183943

申请日：2023-03-14

Applicant: NICHIA CORPORATION

Inventor： Toshiaki YAMASHITA

IPC: H01L33/60 ,  H01L33/00 ,  H01L33/50

CPC classification number: H01L33/60 ,  H01L33/005 ,  H01L33/502 ,  H01L2933/0058 ,  H01L2933/0041

Abstract: A method for manufacturing an optical member includes: preparing a first light-transmissive member and a first molded body made of an inorganic material and surrounding at least one or more lateral surfaces of the first light-transmissive member; firing the first molded body at a first temperature to obtain a first light-reflective member; bonding an upper surface of the first light-transmissive member to a lower surface of a second light-transmissive member; forming, on an upper surface of the first light-reflective member, a second molded body made of an inorganic material and surrounding at least one or more lateral surfaces of the second light-transmissive member; and firing the second molded body at a second temperature lower than the first temperature to obtain a second light-reflective member.

公开(公告)号：US20230118200A1

公开(公告)日：2023-04-20

申请号：US18047989

申请日：2022-10-19

Applicant: NICHIA CORPORATION

Inventor： Toshiaki YAMASHITA

IPC: F21V9/30

Abstract: An optical member includes a first wavelength conversion member including a wavelength conversion portion and a ceramic portion surrounding lateral surfaces of the wavelength conversion portion, and a light shielding film arranged on an outer lateral surface of the first wavelength conversion member.

公开(公告)号：US20210384699A1

公开(公告)日：2021-12-09

申请号：US17339439

申请日：2021-06-04

Applicant: NICHIA CORPORATION

Inventor： Toshiaki YAMASHITA

IPC: H01S5/00 ,  C04B41/45 ,  F21V7/04 ,  C04B41/88

Abstract: A method of manufacturing a metal-coated member includes: providing a composite ceramic member including a ceramic part, and a connection part connected to the ceramic part; disposing a precious metal layer on a surface region that includes at least a portion of a surface of the ceramic part and a portion of a surface of the connection part, the precious metal layer including a precious metal; and removing at least a portion of the precious metal layer that is on the surface of the ceramic part and delineated by the boundary between the ceramic part and the connection part. The connection part has stronger adhesion to the precious metal than the ceramic part.

公开(公告)号：US20180226770A1

公开(公告)日：2018-08-09

申请号：US15891949

申请日：2018-02-08

Applicant: NICHIA CORPORATION

Inventor： Toshiaki YAMASHITA

IPC: H01S5/20 ,  H01S5/028 ,  H01S5/30 ,  H01L33/46 ,  H01L33/50 ,  H01L33/60 ,  H01L33/00 ,  H01L33/32

CPC classification number: H01S5/2027 ,  H01L33/007 ,  H01L33/32 ,  H01L33/46 ,  H01L33/502 ,  H01L33/504 ,  H01L33/60 ,  H01L2933/0041 ,  H01S5/005 ,  H01S5/02212 ,  H01S5/02288 ,  H01S5/0286 ,  H01S5/3013

Abstract: A method of manufacturing a light emitting device includes: disposing a first glass that does not contain a fluorescent material on a light-reflecting member; disposing a fluorescent material containing member on the light-reflecting member via the first glass; fusing the first glass to the fluorescent material containing member at a first temperature to fix the fluorescent material containing member to the light-reflecting member; placing a second glass containing a second fluorescent material on a light emitting surface side of the fluorescent material containing member; fusing the second glass to at least one of the light-reflecting member and the first glass at a second temperature that is lower than the first temperature; and disposing a light emitting element such that light emitted from the light emitting element is irradiated on a light incident surface of the fluorescent material containing member.

公开(公告)号：US20230151946A1

公开(公告)日：2023-05-18

申请号：US18054132

申请日：2022-11-09

Applicant: NICHIA CORPORATION

Inventor： Toshiaki YAMASHITA

IPC: F21V7/26

CPC classification number: F21V7/26 ,  F21Y2115/10

Abstract: A method of manufacturing a wavelength conversion member includes: preparing a composite by layering a layered body and a ceramic sheet that includes a phosphor, the layered body including a pair of light-reflective green sheets each containing a reflective material, and a light-shielding green sheet containing a light shielding material with the light-shielding green sheet being layered between the pair of reflective green sheets; and pressurizing and firing the composite.