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    LIGHT EMITTING DEVICE
    51.
    发明申请
    LIGHT EMITTING DEVICE 审中-公开

    公开(公告)号：US20190198724A1

    公开(公告)日：2019-06-27

    申请号：US16227791

    申请日：2018-12-20

    Applicant: NICHIA CORPORATION

    Inventor： Mika AMIYA ,  Shoji HOSOKAWA

    IPC: H01L33/50 ,  H01L33/32

    CPC classification number: H01L33/504 ,  H01L33/32

    Abstract: Provided is a light emitting device capable of realizing an excellent color rendering property. The light emitting device includes a first light emitting element having a light emission peak wavelength within a range of 400 nm or more and 490 nm or less, a second light emitting element having a different light emission peak wavelength from the first light emitting element within a range of 400 nm or more and 490 nm or less, a first fluorescent material that is excited by at least one of the first light emitting element and the second light emitting element and emits light having a light emission peak wavelength within a range of 500 nm or more and 540 nm or less, and a second fluorescent material that is excited by at least one of the first light emitting element and the second light emitting element and emits light having a light emission peak wavelength within a range of 600 nm or more and 680 nm or less, wherein the first fluorescent material is a Ce-activated aluminate fluorescent material containing Lu, Al, and Ga, and optionally at least one element selected from rare earth elements other than Lu.

    METHOD OF PRODUCING ALUMINATE FLUORESCENT MATERIAL, ALUMINATE FLUORESCENT MATERIAL, AND LIGHT EMITTING DEVICE
    53.
    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.

    LIGHT EMITTING DEVICE
    60.
    发明申请
    LIGHT EMITTING DEVICE 有权
    发光装置

    公开(公告)号：US20160181473A1

    公开(公告)日：2016-06-23

    申请号：US14969602

    申请日：2015-12-15

    Applicant: NICHIA CORPORATION

    Inventor： Shoji HOSOKAWA

    IPC: H01L33/32 ,  H01L33/50

    CPC classification number: H01L33/504 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2224/73265 ,  H01L2924/181 ,  H01L2924/00014 ,  H01L2924/00012

    Abstract: A light emitting device including a light emitting element that has a peak light emission wavelength of from 400 nm to 455 nm, a first fluorescent material that has a peak fluorescence wavelength in the range of from 650 nm to 670 nm, and a second fluorescent material that has a peak fluorescence wavelength in the range of from 520 nm to 550 nm, wherein the light emitting device exhibits a light emission spectrum with an average light emission strength of 30% or less in the range of from 600 nm to 620 nm, when the maximum light emission strength in the range of from 520 nm to 550 nm is taken as 100%.

    Abstract translation: 一种发光器件，包括具有400nm至455nm的峰值发光波长的发光元件，具有650nm至670nm范围内的峰值荧光波长的第一荧光材料和第二荧光材料 其具有在520nm至550nm范围内的峰值荧光波长，其中，所述发光器件在600nm至620nm的范围内显示平均发光强度为30％以下的发光光谱， 在520nm至550nm范围内的最大发光强度取为100％。

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