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    METHOD OF PRODUCING ALUMINATE FLUORESCENT MATERIAL, ALUMINATE FLUORESCENT MATERIAL, AND LIGHT EMITTING DEVICE
    2.
    发明申请
    METHOD OF PRODUCING ALUMINATE FLUORESCENT MATERIAL, ALUMINATE FLUORESCENT MATERIAL, AND LIGHT EMITTING DEVICE 审中-公开

    公开(公告)号：US20180265782A1

    公开(公告)日：2018-09-20

    申请号：US15857926

    申请日：2017-12-29

    Applicant: NICHIA CORPORATION

    Inventor： Kazuya NISHIMATA ,  Tomokazu YOSHIDA ,  Shoji HOSOKAWA

    IPC: C09K11/77 ,  C09K11/55 ,  C09K11/57 ,  C09K11/64 ,  H01L33/50

    CPC classification number: C09K11/7734 ,  C09K11/55 ,  C09K11/57 ,  C09K11/64 ,  H01L33/504

    Abstract: Disclosed are a method of producing an aluminate fluorescent material, such an aluminate fluorescent material, and a light emitting device. The aluminate fluorescent material production method includes: subjecting a first mixture prepared by mixing a compound containing at least one metal element selected from the group consisting of Ba, Sr and Ca, and at least one compound selected from the group consisting of a compound containing Mn and a compound containing Eu, and a compound containing Al, in which a compound containing Mg may be optionally mixed, to first heat treatment to give a first calcined product having an average particle diameter D1, as measured according to a Fisher Sub-Sieve Sizer method, of 6 μm or more; and subjecting a second mixture prepared by mixing a compound containing at least one metal element selected from the group consisting of Ba, Sr and Ca, at least one compound selected from the group consisting of a compound containing Mn and a compound containing Eu, and a compound containing Al, and the first calcined product whose content is 10% by mass or more and 90% by mass or less relative to the total amount of the second mixture, in which a compound containing Mg may be optionally mixed, to second heat treatment to give a second calcined product.

    CHLOROSILICATE FLUORESCENT MATERIAL, METHOD FOR PRODUCING THE SAME, AND LIGHT EMITTING DEVICE
    4.
    发明公开
    CHLOROSILICATE FLUORESCENT MATERIAL, METHOD FOR PRODUCING THE SAME, AND LIGHT EMITTING DEVICE 审中-公开

    公开(公告)号：US20230332043A1

    公开(公告)日：2023-10-19

    申请号：US18341365

    申请日：2023-06-26

    Applicant: NICHIA CORPORATION

    Inventor： Ryuta MIYAI ,  Kazuya NISHIMATA ,  Shoji HOSOKAWA

    IPC: C09K11/61 ,  H01L33/26

    CPC classification number: C09K11/617 ,  H01L33/26

    Abstract: Provided are a chlorosilicate fluorescent material having high light emission efficiency, a method for producing the same, and a light emitting device. In certain embodiments, the chlorosilicate fluorescent material has a chemical composition comprising Ca, Eu, Mg, Si, O, and Cl, wherein when a molar ratio of Si in 1 mol of the chemical composition is set as 4, the chlorosilicate fluorescent material comprises Ca in a molar ratio range of 7.0 or more and 7.94 or less, Eu in a molar ratio range of 0.01 or more and 1.0 or less, Ca and Eu in a total molar ratio range of 7.70 or more and 7.95 or less, Mg in a molar ratio range of 0.9 or more and 1.1 or less, and Cl in a molar ratio range of more than 1.90 and 2.00 or less.

    METHOD FOR PRODUCING NITRIDE FLUORESCENT MATERIAL, NITRIDE FLUORESCENT MATERIAL AND LIGHT EMITTING DEVICE
    5.
    发明申请
    METHOD FOR PRODUCING NITRIDE FLUORESCENT MATERIAL, NITRIDE FLUORESCENT MATERIAL AND LIGHT EMITTING DEVICE 有权

    公开(公告)号：US20210032536A1

    公开(公告)日：2021-02-04

    申请号：US17063696

    申请日：2020-10-05

    Applicant: NICHIA CORPORATION

    Inventor： Sadakazu WAKUI ,  Kazuya NISHIMATA ,  Shoji HOSOKAWA

    IPC: C09K11/77 ,  H01L33/50

    Abstract: Disclosed are a production method for a nitride fluorescent material, a nitride fluorescent material and a light emitting device. The production method is for producing a nitride fluorescent material that has, as a fluorescent material core, a calcined body having a composition containing at least one element Ma selected from the group consisting of Sr, Ca, Ba and Mg, at least one element Mb selected from the group consisting of Li, Na and K, at least one element Mc selected from the group consisting of Eu, Ce, Tb and Mn, and Al, and optionally Si, and N, and the method includes preparing a calcined body having the above-mentioned composition, bringing the calcined body into contact with a fluorine-containing substance, and subjecting it to a first heat treatment at a temperature of 100° C. or higher and 500° C. or lower to form a fluoride-containing first film on the calcined body, and forming on the calcined body, a second film that contains a metal oxide containing at least one metal element M2 selected from the group consisting of Si, Al, Ti, Zr, Sn and Zn and subjecting it to a second heat treatment at a temperature in a range of higher than 250° C. and 500° C. or lower.

    METHOD FOR PRODUCING FLUORESCENT MATERIAL, AND FLUORESCENT MATERIAL
    6.
    发明申请
    METHOD FOR PRODUCING FLUORESCENT MATERIAL, AND FLUORESCENT MATERIAL 审中-公开

    公开(公告)号：US20190300785A1

    公开(公告)日：2019-10-03

    申请号：US16368984

    申请日：2019-03-29

    Applicant: NICHIA CORPORATION

    Inventor： Ryuta MIYAI ,  Kazuya NISHIMATA ,  Shoji HOSOKAWA

    IPC: C09K11/64 ,  C09K11/08

    Abstract: A method for producing a γ-AlON fluorescent material, comprising: preparing a first mixture containing a compound containing Mn, a compound containing Li, a compound containing Mg, an aluminum oxide, and an aluminum nitride, in which the amount of fluorine is 150 ppm by mass or less relative to the total amount of the first mixture excluding fluorine, and subjecting the first mixture to a first heat treatment to obtain a first calcined product having an average particle diameter D1, as measured according to a Fisher Sub-Sieve Sizer method, of 10.0 μm or more; and preparing a second mixture containing the first calcined product, a compound containing Mn, a compound containing Li, a compound containing Mg, an aluminum oxide, and an aluminum nitride, in which the amount of fluorine is 150 ppm by mass or less relative to the total amount of the second mixture excluding fluorine, and subjecting the second mixture to a second heat treatment to obtain a second calcined product having an average particle diameter D2, as measured according to the Fisher Sub-Sieve Sizer method, of 16.0 μm or more, wherein the second mixture contains the first calcined product in an amount of more than 20% by mass and 82% by mass or less.

    LIGHT-EMITTING DEVICE
    7.
    发明申请
    LIGHT-EMITTING DEVICE 审中-公开

    公开(公告)号：US20180203301A1

    公开(公告)日：2018-07-19

    申请号：US15866826

    申请日：2018-01-10

    Applicant: NICHIA CORPORATION

    Inventor： Shoji HOSOKAWA ,  Kazuya NISHIMATA ,  Tomokazu YOSHIDA

    IPC: G02F1/1335

    CPC classification number: G02F1/133602 ,  G02F1/133514 ,  H01L33/50

    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. The light-emitting device has an emission spectrum with a relative emission intensity of 35% or less at 500 nm and of 65% or less at 540 nm when a local maximum light-emitting emission intensity in a range of from 510 nm to 535 nm is taken as 100%.

    LIGHT-EMITTING DEVICE
    10.
    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.

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