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    FLUORIDE PHOSPHOR, PRODUCTION METHOD THEREFOR, AND LIGHT-EMITTING DEVICE
    11.
    发明申请
    FLUORIDE PHOSPHOR, PRODUCTION METHOD THEREFOR, AND LIGHT-EMITTING DEVICE 有权

    公开(公告)号：US20230114859A1

    公开(公告)日：2023-04-13

    申请号：US17932881

    申请日：2022-09-16

    Applicant: NICHIA CORPORATION

    Inventor： Tomokazu YOSHIDA

    IPC: C09K11/61 ,  C09K11/77 ,  H01L33/50

    Abstract: Provided is a fluoride phosphor having higher durability. The fluoride phosphor includes a first fluoride and a second fluoride deposited on at least part of a surface of the first fluoride. The first fluoride has a composition containing an alkali metal, Si, Al, Mn, and F, wherein, when the number of moles of the alkali metal is taken as 2, the total number of moles of Si, Al, and Mn is 0.9 to 1.1; the number of moles of Al is more than 0 and less than 0.10; the number of moles of Mn is more than 0 and less than 0.20; and the number of moles of F is 5.9 to 6.1. The second fluoride has a composition which contains an alkali metal, Si, and F, and which is substantially free of Al and Mn.

    FLUORIDE PHOSPHOR AND METHOD OF PRODUCING THE SAME, WAVELENGTH CONVERSION MEMBER, AND LIGHT EMITTING DEVICE
    12.
    发明申请
    FLUORIDE PHOSPHOR AND METHOD OF PRODUCING THE SAME, WAVELENGTH CONVERSION MEMBER, AND LIGHT EMITTING DEVICE 有权

    公开(公告)号：US20220403236A1

    公开(公告)日：2022-12-22

    申请号：US17807845

    申请日：2022-06-20

    Applicant: NICHIA CORPORATION

    Inventor： Yohei YAMAUCHI ,  Tomokazu YOSHIDA ,  Yuki SHIOTA

    IPC: C09K11/61 ,  C09K11/64 ,  C09K11/02 ,  H01L33/50

    Abstract: A fluoride phosphor, comprising fluoride particles having an average particle size of 0.1 μm to 7 μm and a maximum particle size of 1 μm to 18 μm, wherein a ratio of the maximum particle size with respect to the average particle size is higher than 1. The fluoride particles have a composition containing an element M containing at least one selected from the group consisting of Group 4 elements, Group 13 elements, and Group 14 elements; an alkali metal; Mn; and F. In the composition, when the number of moles of the alkali metal is 2, the number of moles of Mn is more than 0 but less than 0.2, the number of moles of the element M is more than 0.8 but less than 1, and the number of moles of F is more than 5 but less than 7.

    FLUORIDE FLUORESCENT MATERIAL, LIGHT EMITTING DEVICE, AND METHOD FOR PRODUCING FLUORIDE FLUORESCENT MATERIAL
    13.
    发明申请
    FLUORIDE FLUORESCENT MATERIAL, LIGHT EMITTING DEVICE, AND METHOD FOR PRODUCING FLUORIDE FLUORESCENT MATERIAL 审中-公开

    公开(公告)号：US20200208050A1

    公开(公告)日：2020-07-02

    申请号：US16724485

    申请日：2019-12-23

    Applicant: NICHIA CORPORATION

    Inventor： Tomokazu YOSHIDA

    IPC: C09K11/67 ,  H01L33/50

    Abstract: A fluoride fluorescent material includes a composition including K, Ge, Mn4+, and F and having a molar ratio of K of 2, a total molar ratio of Ge and Mn4+ of 1, a molar ratio of Mn4+ of more than 0 and less than 0.2, and a molar ratio of F of 6 in 1 mol of the composition, has a light emission spectrum having a first light emission peak in a range of 615 nm or more and less than 625 nm having a full width at half maximum of 6 nm or less, and a second light emission peak in a range of 625 nm or more and less than 635 nm, and has an internal quantum of 85% or more efficiency under excitation of light having a wavelength of 450 nm.

    LIGHT-EMITTING DEVICE
    16.
    发明申请
    LIGHT-EMITTING DEVICE 审中-公开

    公开(公告)号：US20190109266A1

    公开(公告)日：2019-04-11

    申请号：US16201141

    申请日：2018-11-27

    Applicant: NICHIA CORPORATION

    Inventor： Shoji HOSOKAWA ,  Kazuya NISHIMATA ,  Tomokazu YOSHIDA

    IPC: H01L33/50 ,  G02F1/13357 ,  C09K11/64 ,  C09K11/77 ,  C09K11/08

    Abstract: Provided is a light-emitting device including a light-emitting element having a peak emission wavelength in a range of from 400 nm to 470 nm, and a fluorescent member including a first fluorescent material including an aluminate that contains Mg, Mn, and at least one alkali earth metal selected from the group consisting of Ba, Sr, and Ca, a second fluorescent material having a different composition from the first fluorescent material, and a third fluorescent material. The first, second and third fluorescent materials have a peak emission wavelength in a range of from 510 nm to 525 nm, from 510 nm to 550 nm, and from 620 nm to 670 nm, respectively.

    LIGHT EMITTING DEVICE
    17.
    发明申请
    LIGHT EMITTING DEVICE 审中-公开

    公开(公告)号：US20180090647A1

    公开(公告)日：2018-03-29

    申请号：US15715841

    申请日：2017-09-26

    Applicant: NICHIA CORPORATION

    Inventor： Shoji HOSOKAWA ,  Kazuya NISHIMATA ,  Tomokazu YOSHIDA

    IPC: H01L33/50 ,  G02F1/1335

    CPC classification number: H01L33/504 ,  G02F1/133603 ,  H01L33/502

    Abstract: Provided is a light emitting device capable of realizing color reproducibility in a broad range. The light emitting device contains a light emitting element having an emission peak wavelength in a range of 430 nm or more and 470 nm or less, a first fluorescent material having a composition represented by formula (I), which has an emission peak wavelength in a range of 510 nm or more and 525 nm or less and has an average particle diameter that is 10.0 μm or more and 30.0 μm or less, and a second fluorescent material having an emission peak wavelength in a range of 620 nm or more and 670 nm or less: X1aMgbMncAldOa+b+c+1.5d  (I) wherein X1 represents at least one element selected from the group consisting of Ba, Sr and Ca, and a, b, c and d satisfy 0.5≦a≦1.0, 0.0≦b≦0.7, 0.3≦c≦0.7, and 8.5≦d≦13.0.

    FLUORIDE PHOSPHOR, METHOD FOR MANUFACTURING SAME, AND LIGHT-EMITTING DEVICE
    20.
    发明公开
    FLUORIDE PHOSPHOR, METHOD FOR MANUFACTURING SAME, AND LIGHT-EMITTING DEVICE 审中-公开

    公开(公告)号：US20240240082A1

    公开(公告)日：2024-07-18

    申请号：US18565503

    申请日：2022-05-26

    Applicant: NICHIA CORPORATION

    Inventor： Kenichi AOYAGI ,  Tomokazu YOSHIDA ,  Kazuya NISHIMATA

    IPC: C09K11/77 ,  H01L33/50

    CPC classification number: C09K11/77348 ,  H01L33/502 ,  H01L2933/0041

    Abstract: Provided is a fluoride phosphor that can improve reliability in a light-emitting device. The fluoride phosphor includes fluoride particles and an oxide covering at least a portion of the surface of the fluoride particles. The oxide contains at least one element selected from the group consisting of Si, Al, Ti, Zr, Sn, and Zn, and a content percentage of the oxide is in a range from 2 mass % to 30 mass %. The fluoride particles have a composition containing an element M including at least one element selected from the group consisting of Group 4 elements, Group 13 elements, and Group 14 elements, an alkali metal, Mn, and F, and when the number of moles of the alkali metal is 2, the number of moles of Mn is in a range greater than 0 and less than 0.2, the number of moles of the element M is a range greater than 0.8 and less than 1, and the number of moles of F is in a range greater than 5 and less than 7.

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