公开(公告)号：US20140319568A1

公开(公告)日：2014-10-30

申请号：US14261638

申请日：2014-04-25

Applicant: NICHIA CORPORATION

Inventor： Takashi KAIDE ,  Shoji HOSOKAWA

IPC: H01L33/50 ,  C09K11/77

CPC classification number: H01L33/502 ,  C09K11/7766 ,  C09K11/7774 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2924/00014

Abstract: A phosphor is provided which is represented by the general formula MxCeyPrzSi6N8+w. M is at least one element selected from the group consisting of La, Y, Tb and Lu. And x, y, z and w satisfy 2.0

Abstract translation: 提供了由通式MxCeyPrzSi6N8 + w表示的荧光体。 M是选自La，Y，Tb和Lu中的至少一种元素。 而x，y，z和w分别满足2.0

公开(公告)号：US20230045233A1

公开(公告)日：2023-02-09

申请号：US17937766

申请日：2022-10-03

Applicant: NICHIA CORPORATION

Inventor： Kenichi AOYAGI ,  Takashi KAIDE ,  Yuya TAKAHASHI ,  Shoji HOSOKAWA

IPC: C01B21/082 ,  C01F17/30 ,  C09K11/08 ,  C09K11/77

Abstract: Provided a method of producing a β-sialon fluorescent material having excellent emission intensity. The method includes providing a first composition containing aluminum, an oxygen atom, and a europium-containing silicon nitride, heat treating the first composition, contacting the heat-treated composition and a basic substance to obtain a second composition, and contacting the second composition resulting from contacting the heat-treated composition with the basic substance and an acidic liquid medium containing an acidic substance.

公开(公告)号：US20210095203A1

公开(公告)日：2021-04-01

申请号：US17120662

申请日：2020-12-14

Applicant: NICHIA CORPORATION

Inventor： Kenichi AOYAGI ,  Takashi KAIDE ,  Motoharu MORIKAWA ,  Shoji HOSOKAWA

IPC: C09K11/77 ,  C09K11/08

Abstract: Provided is a method of producing a β-sialon fluorescent material having a high light emission intensity and an excellent light emission luminance. The method includes preparing a calcined product having a composition of β-sialon containing an activating element; grinding the calcined product to obtain a ground product; and heat-treating the ground product to obtain a heat-treated product. A specific surface area of the ground product is 0.2 m2/g or more.

公开(公告)号：US20190305193A1

公开(公告)日：2019-10-03

申请号：US16369046

申请日：2019-03-29

Applicant: NICHIA CORPORATION

Inventor： Kenichi AOYAGI ,  Takashi KAIDE ,  Takuya NAKABAYASHI ,  Tetsuya ISHIKAWA ,  Shoji HOSOKAWA

IPC: H01L33/50 ,  C09K11/08 ,  C09K11/77

Abstract: A wavelength converting member comprising a first wavelength converting layer containing: a first fluorescent material having a light emission peak wavelength in a range of 620 nm or more and 660 nm or less; a second fluorescent material having a light emission peak wavelength in a range of 510 nm or more and 560 nm or less; and a resin, wherein the average particle diameter, as measured according to a Fisher Sub-Sieve Sizer method, of the first fluorescent material is in a range of 2 μm or more and 30 μm or less, wherein the second fluorescent material comprises a β-SiAlON fluorescent material, the circularity of the β-SiAlON fluorescent material is 0.7 or more, and the volume average particle diameter, as measured according to a laser diffraction scattering particle size distribution measuring method, of the β-SiAlON fluorescent material is in a range of 2 μm or more and 30 μm or less, and wherein the thickness of the first wavelength converting layer is in a range of 50 μm or more and 200 μm or less.

公开(公告)号：US20170342321A1

公开(公告)日：2017-11-30

申请号：US15606153

申请日：2017-05-26

Applicant: NICHIA CORPORATION

Inventor： Kenichi AOYAGI ,  Takashi KAIDE ,  Motoharu MORIKAWA ,  Shoji HOSOKAWA

IPC: C09K11/77 ,  C09K11/08

CPC classification number: C09K11/7734 ,  C09K11/0883

Abstract: Provided is a method of producing a β-sialon fluorescent material having a high light emission intensity and an excellent light emission luminance. The method includes preparing a calcined product having a composition of β-sialon containing an activating element; grinding the calcined product to obtain a ground product; and heat-treating the ground product to obtain a heat-treated product. A specific surface area of the ground product is 0.2 m2/g or more.