公开(公告)号：US11447694B2

公开(公告)日：2022-09-20

申请号：US17167763

申请日：2021-02-04

Applicant: NICHIA CORPORATION

Inventor： Tadayoshi Yanagihara ,  Naoto Fujioka ,  Keisuke Suzuki

IPC: C09K11/02 ,  C04B35/117 ,  C04B35/645 ,  F21V9/30 ,  C09K11/77 ,  C04B35/44 ,  C04B35/626

Abstract: A method for manufacturing a wavelength conversion member that offers a high emission intensity and a high light conversion efficiency is provided. The method for manufacturing a wavelength conversion member includes providing a green body containing an yttrium-aluminum-garnet phosphor with a composition represented by Formula (I) below and alumina particles with an alumina purity of 99.0% by mass or more, primary-sintering the green body to obtain a first sintered body, and secondary-sintering the first sintered body by applying a hot isostatic pressing (HIP) treatment to obtain a second sintered body. (Y1-a-bGdaCeb)3Al5O12  (I) wherein a and b satisfy 0≤a≤0.3 and 0≤b≤0.022.

公开(公告)号：US11084977B2

公开(公告)日：2021-08-10

申请号：US16553263

申请日：2019-08-28

Applicant: NICHIA CORPORATION

Inventor： Naoto Fujioka ,  Tadayoshi Yanagihara ,  Keisuke Suzuki ,  Hiroshi Ogasa

IPC: C09K11/02 ,  C09K11/77 ,  C04B41/00 ,  C04B35/645 ,  C04B35/117

Abstract: Provided are a ceramic complex having high light emission intensity and a method for producing the same. Proposed is a ceramic complex, including a rare earth aluminate fluorescent material having a composition represented by the following formula (I) and an aluminum oxide, wherein the content of the aluminum oxide is 70% by mass or more, the content of Na is 7 ppm by mass or less, the content of Si is 5 ppm by mass or less, the content of Fe is 3 ppm by mass or less, and the content of Ga is 5 pm by mass or less, relative to the total amount of the rare earth aluminate fluorescent material having a composition represented by the following formula (I) and the aluminum oxide. (Ln1-aCea)3Al5O12   (I) wherein Ln represents at least one element selected from the group consisting of Y, Gd, Lu, and Tb; and a satisfies 0

公开(公告)号：US11851375B2

公开(公告)日：2023-12-26

申请号：US17304956

申请日：2021-06-29

Applicant: NICHIA CORPORATION

Inventor： Toshiyuki Hirai ,  Keisuke Suzuki ,  Hirofumi Oguri

IPC: C04B35/10 ,  C04B35/64 ,  C04B35/44 ,  C09K11/77 ,  C04B35/117 ,  C04B35/645 ,  C04B111/80

CPC classification number: C04B35/10 ,  C04B35/117 ,  C04B35/44 ,  C04B35/64 ,  C04B35/6455 ,  C09K11/7774 ,  C04B2111/807 ,  C04B2235/3222 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/661 ,  C04B2235/662 ,  C04B2235/77 ,  C04B2235/78 ,  C04B2235/786 ,  C04B2235/963

Abstract: A method for producing a ceramic complex includes: preparing a raw material mixture that contains 5% by mass or more and 40% by mass or less of first rare earth aluminate fluorescent material particles containing an activating element and a first rare earth element different from the activating element, 0.1% by mass or more and 32% by mass or less of oxide particles containing a second rare earth element, and the balance of aluminum oxide particles, relative to 100% by mass of the total amount of the first rare earth aluminate fluorescent material particles, the oxide particles, and the aluminum oxide particles; preparing a molded body of the raw material mixture; and obtaining a sintered body by calcining the molded body in a temperature range of 1,550° C. or higher and 1,800° C. or lower.

公开(公告)号：US10947448B2

公开(公告)日：2021-03-16

申请号：US15906612

申请日：2018-02-27

Applicant: NICHIA CORPORATION

Inventor： Tadayoshi Yanagihara ,  Naoto Fujioka ,  Keisuke Suzuki

IPC: C09K11/02 ,  C04B35/117 ,  C04B35/645 ,  F21V9/30 ,  C09K11/77 ,  C04B35/44 ,  C04B35/626

Abstract: A method for manufacturing a wavelength conversion member that offers a high emission intensity and a high light conversion efficiency is provided. The method for manufacturing a wavelength conversion member includes providing a green body containing an yttrium-aluminum-garnet phosphor with a composition represented by Formula (I) below and alumina particles with an alumina purity of 99.0% by mass or more, primary-sintering the green body to obtain a first sintered body, and secondary-sintering the first sintered body by applying a hot isostatic pressing (HIP) treatment to obtain a second sintered body. (Y1-a-bGdaCeb)3Al5O12  (I) wherein a and b satisfy 0≤a≤0.3 and 0

公开(公告)号：US20180244986A1

公开(公告)日：2018-08-30

申请号：US15906612

申请日：2018-02-27

Applicant: NICHIA CORPORATION

Inventor： Tadayoshi Yanagihara ,  Naoto Fujioka ,  Keisuke Suzuki

IPC: C09K11/02 ,  C09K11/77 ,  C04B35/117 ,  C04B35/645 ,  F21V9/30

CPC classification number: C09K11/025 ,  C04B35/117 ,  C04B35/44 ,  C04B35/6265 ,  C04B35/62685 ,  C04B35/6455 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3222 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3229 ,  C04B2235/445 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6583 ,  C04B2235/661 ,  C04B2235/663 ,  C04B2235/664 ,  C04B2235/764 ,  C04B2235/77 ,  C09K11/7774 ,  F21V9/30

Abstract: A method for manufacturing a wavelength conversion member that offers a high emission intensity and a high light conversion efficiency is provided. The method for manufacturing a wavelength conversion member includes providing a green body containing an yttrium-aluminum-garnet phosphor with a composition represented by Formula (I) below and alumina particles with an alumina purity of 99.0% by mass or more, primary-sintering the green body to obtain a first sintered body, and secondary-sintering the first sintered body by applying a hot isostatic pressing (HIP) treatment to obtain a second sintered body. (Y1-a-bGdaCeb)3Al5O12  (I) wherein a and b satisfy 0≤a≤0.3 and 0