Light emitting device
    2.
    发明授权
    Light emitting device 有权
    发光装置

    公开(公告)号:US08921878B2

    公开(公告)日:2014-12-30

    申请号:US13214572

    申请日:2011-08-22

    摘要: A light emitting device according to one embodiment includes a board; a light emitting element mounted on the board, emitting light having a wavelength of 250 nm to 500 nm; a red fluorescent layer formed on the element, including a red phosphor expressed by equation (1), having a semicircular shape with a diameter r; (M1−x1Eux1)aSibAlOcNd  (1) (In the equation (1), M is an element that is selected from IA group elements, IIA group elements, IIIA group elements, IIIB group elements except Al (Aliminum), rare-earth elements, and IVB group elements),an intermediate layer formed on the red fluorescent layer, being made of transparent resin, having a semicircular shape with a diameter D; and a green fluorescent layer formed on the intermediate layer, including a green phosphor, having a semicircular shape. A relationship between the diameter r and the diameter D satisfies equation (2): 2.0r(μm)≦D≦(r+1000)(μm).  (2)

    摘要翻译: 根据一个实施例的发光器件包括板; 安装在所述板上的发光元件,发射波长为250nm至500nm的光; 形成在元件上的红色荧光层,包括由等式(1)表示的具有直径为r的半圆形形状的红色荧光体; (M1-x1Eux1)aSibAlOcNd(1)(在式(1)中,M是选自IA族元素,IIA族元素,IIIA族元素,Al(Aliminum)以外的IIIB族元素,稀土元素 和IVB族元素),形成在红色荧光层上的由透明树脂制成的具有直径D的半圆形状的中间层; 以及形成在具有半圆形状的绿色荧光体的中间层上形成的绿色荧光体层。 直径r和直径D之间的关系满足式(2):2.0r(μm)≦̸ D≦̸(r + 1000)(μm)。 (2)

    FLUORESCENT SUBSTANCE AND LIGHT-EMITTING DEVICE EMPLOYING THE SAME
    7.
    发明申请
    FLUORESCENT SUBSTANCE AND LIGHT-EMITTING DEVICE EMPLOYING THE SAME 审中-公开
    使用其的荧光物质和发光装置

    公开(公告)号:US20120230010A1

    公开(公告)日:2012-09-13

    申请号:US13239578

    申请日:2011-09-22

    IPC分类号: F21V9/16 C09K11/79

    摘要: The embodiment provides a green light-emitting fluorescent substance having high quantum efficiency and also a light-emitting device comprising that substance so as to less undergo color discrepancies. The fluorescent substance is generally represented by (Sr1−xEux)3−yAl3+zSi13−zO2+uN21−w, and is a kind of the Sr3Al3Si13O2N21 phosphors. This substance also gives an X-ray diffraction pattern having a diffraction peak at 2θ of 15.2 to 15.5° and the half-width thereof is 0.14° or less. Further, the substance emits luminescence having a peak within 490 to 580 nm when excited by light of 250 to 500 nm. The light-emitting device provided by the embodiment comprises that substance in combination with a light-emitting element and a red light-emitting fluorescent substance.

    摘要翻译: 本实施方案提供了具有高量子效率的绿色发光荧光物质,并且还提供了包含该物质以减少色差的发光装置。 荧光物质通常由(Sr1-xEux)3-yAl3 + zSi13-zO2 + uN21-w表示,并且是Sr3Al3Si13O2N21荧光体的一种。 该物质还给出了在2θ处具有衍射峰的X射线衍射图; 为15.2〜15.5°,半值宽度为0.14°以下。 此外,当由250〜500nm的光激发时,该物质发射具有在490〜580nm内的峰值的发光。 由该实施方式提供的发光装置包含与发光元件和红色发光荧光物质组合的物质。

    LIGHT EMITTING DEVICE
    9.
    发明申请
    LIGHT EMITTING DEVICE 有权
    发光装置

    公开(公告)号:US20120056225A1

    公开(公告)日:2012-03-08

    申请号:US13214572

    申请日:2011-08-22

    IPC分类号: H01L33/50

    摘要: A light emitting device according to one embodiment includes a board; a light emitting element mounted on the board, emitting light having a wavelength of 250 nm to 500 nm; a red fluorescent layer formed on the element, including a red phosphor expressed by equation (1), having a semicircular shape with a diameter r; (M1−x1Eux1)aSibAlOcNd  (1) (In the equation (1), M is an element that is selected from IA group elements, IIA group elements, IIIA group elements, IIIB group elements except Al (Aliminum), rare-earth elements, and IVB group elements),an intermediate layer formed on the red fluorescent layer, being made of transparent resin, having a semicircular shape with a diameter D; and a green fluorescent layer formed on the intermediate layer, including a green phosphor, having a semicircular shape. A relationship between the diameter r and the diameter D satisfies equation (2): 2.0r(μm)≦D≦(r+1000)(μm).  (2)

    摘要翻译: 根据一个实施例的发光器件包括板; 安装在所述板上的发光元件,发射波长为250nm至500nm的光; 形成在元件上的红色荧光层,包括由等式(1)表示的具有直径为r的半圆形形状的红色荧光体; (M1-x1Eux1)aSibAlOcNd(1)(在式(1)中,M是选自IA族元素,IIA族元素,IIIA族元素,Al(Aliminum)以外的IIIB族元素,稀土元素 和IVB族元素),形成在红色荧光层上的由透明树脂制成的具有直径D的半圆形状的中间层; 以及形成在具有半圆形状的绿色荧光体的中间层上形成的绿色荧光体层。 直径r和直径D之间的关系满足式(2):2.0r(μm)≦̸ D≦̸(r + 1000)(μm)。 (2)