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    WHITE LIGHT-EMITTING DEVICE
    11.
    发明申请
    WHITE LIGHT-EMITTING DEVICE 审中-公开
    白色发光装置

    公开(公告)号：US20140175971A1

    公开(公告)日：2014-06-26

    申请号：US14134293

    申请日：2013-12-19

    申请人： Kabushiki Kaisha Toshiba

    发明人： Naotoshi MATSUDA ,  Yasushi Hattori ,  Yumi Fukuda ,  Iwao Mitsuishi ,  Keiko Albessard

    IPC分类号： F21K99/00

    CPC分类号： C09K11/0883 ,  C09K11/7734 ,  H01L33/502 ,  H01L2224/48091 ,  Y02B20/181 ,  H01L2924/00014

    摘要： The embodiment of the present disclosure provides a light-emitting device capable of both realizing neutral white color and having high luminous efficiency. The device has a blue-light emitting semi-conductor element and a luminescent layer containing a mixture of fluorescent substances. The mixture contains first and second phosphors. The first phosphor is activated with Ce and emits luminescence with a peak wavelength of 540 to 560 nm, and the second phosphor emits luminescence with a peak wavelength of 580 to 610 nm and is represented by the following formula (2): (Sr1-x2Eux2) Sia2Alb2Oc2Nd2Ce2   (2).

    摘要翻译： 本公开的实施例提供一种能够实现中性白色并具有高发光效率的发光装置。 该装置具有蓝色发光半导体元件和含有荧光物质混合物的发光层。 该混合物包含第一和第二荧光体。 第一荧光体用Ce活化并发射峰值波长为540〜560nm的发光，第二荧光体发射峰值波长为580〜610nm的发光，由下式（2）表示：（Sr1-x2Eux2 ）Sia2Alb2Oc2Nd2Ce2（2）。

    Structure and joined composite
    12.
    发明授权
    Structure and joined composite 有权

    公开(公告)号：US11355416B2

    公开(公告)日：2022-06-07

    申请号：US17007087

    申请日：2020-08-31

    申请人： KABUSHIKI KAISHA TOSHIBA

    发明人： Yumi Fukuda ,  Koichi Harada ,  Yasushi Hattori ,  Maki Yonetsu ,  Kenji Essaki ,  Keiko Albessard ,  Yasuhiro Goto

    IPC分类号： H01L23/373

    摘要： A structure includes: a β silicon nitride crystal phase; and a Y2MgSi2O5N crystal phase. The structure gives a X-ray diffraction pattern by a θ-2θ method, the pattern having a ratio of a peak intensity of a (22-1) plane of the Y2MgSi2O5N crystal phase to a peak intensity of a (200) plane of the β silicon nitride crystal phase, the peak intensity of the (200) plane being determined at a position of 2θ=27.0±1°, the peak intensity of the (22-1) plane being determined at a position of 2θ=30.3±1°, and the ratio being 0.001 or more and 0.01 or less.

    Light-emitting device with phosphor excited by blue excitation light
    14.
    发明授权
    Light-emitting device with phosphor excited by blue excitation light 有权
    具有由蓝色激发光激发的荧光体的发光装置

    公开(公告)号：US09520540B2

    公开(公告)日：2016-12-13

    申请号：US14184881

    申请日：2014-02-20

    申请人： Kabushiki Kaisha Toshiba

    发明人： Kunio Ishida ,  Keiko Albessard ,  Yasushi Hattori ,  Iwao Mitsuishi ,  Yumi Fukuda ,  Ryosuke Hiramatsu ,  Aoi Okada ,  Masahiro Kato

    IPC分类号： H01L33/50 ,  C09K11/77

    CPC分类号： H01L33/504 ,  C09K11/7721 ,  C09K11/7734 ,  H01L33/502

    摘要： A light-emitting device of an embodiment includes a light-emitting element emitting blue excitation light and a first phosphor excited by the blue excitation light and emitting fluorescence. A peak wavelength of the fluorescence is not shorter than 520 nm and shorter than 660 nm and the peak wavelength of the fluorescence shifting in the same direction when a peak wavelength of the blue excitation light shifts. The first phosphor is one of a yellow phosphor emitting yellow fluorescence, a green phosphor emitting green fluorescence, a yellow-green/yellow phosphor emitting yellow-green/yellow fluorescence and a red phosphor emitting red fluorescence.

    摘要翻译： 实施例的发光装置包括发射蓝色激发光的发光元件和由蓝色激发光激发并发射荧光的第一荧光体。 当蓝色激发光的峰值波长偏移时，荧光的峰值波长不小于520nm且小于660nm，并且荧光的峰值波长在相同方向上移动。 第一荧光体是发出黄色荧光的黄色荧光体，发出绿色荧光的绿色荧光体，发出黄绿色/黄色荧光物质的黄绿色/黄色荧光体和发出红色荧光物质的红色荧光体之一。

    LIGHT EMITTING DEVICE
    15.
    发明申请
    LIGHT EMITTING DEVICE 审中-公开
    发光装置

    公开(公告)号：US20150318451A1

    公开(公告)日：2015-11-05

    申请号：US14696766

    申请日：2015-04-27

    申请人： Kabushiki Kaisha Toshiba

    发明人： Kunio ISHIDA ,  Keiko Albessard ,  Yasushi Hattori ,  Masahiro Kato

    IPC分类号： H01L33/50 ,  H01L33/56

    CPC分类号： H01L33/502 ,  C09K11/0883 ,  C09K11/7721 ,  C09K11/7734 ,  H01L33/504 ,  H01L33/56

    摘要： A light emitting device of an embodiment includes a light emitting element emitting near-ultraviolet light or blue light as exciting light; and a yellow color conversion layer including a yellow phosphor and a resin, the yellow phosphor represented by formula (1) and being capable of converting the exciting light to yellow light, the resin surrounding the yellow phosphor, the yellow color conversion layer containing the yellow phosphor at a volume concentration of at most 7%, the yellow color conversion layer having a region whose cross section parallel to a light emitting surface of the light emitting element has an area larger than the light emitting surface, (Sr1-x1Cex1)a1AlSib1Oc1Nd1   (1) wherein x1, a1, b1, c1, and d1 satisfy following relations: 0

    摘要翻译： 实施例的发光装置包括发射近紫外光或蓝光作为激发光的发光元件; 以及包含黄色荧光体和树脂的黄色变色层，由式（1）表示的黄色荧光体，能够将激发光转换成黄色的光，包围黄色荧光体的树脂，含有黄色荧光体的黄色转换层 荧光体的体积浓度为7％以下，具有与发光元件的发光面平行的截面的区域的黄色转换层的面积大于发光面的区域（Sr1-x1Cex1）a1AlSib1Oc1Nd1（ 1）其中x1，a1，b1，c1和d1满足以下关系：0