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    White phosphor converted LED with stable flux output versus temperature
    13.
    发明授权
    White phosphor converted LED with stable flux output versus temperature 有权

    公开(公告)号：US10205066B2

    公开(公告)日：2019-02-12

    申请号：US15551220

    申请日：2016-02-15

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Hans-Helmut Bechtel ,  Oliver Jens Steigelmann ,  Detlef Uwe Wiechert ,  Matthias Heidemann

    IPC: H01J1/63 ,  H01L33/50 ,  F21V8/00

    Abstract: The invention provides a lighting device comprising a solid state light source and a ceramic body, wherein the solid state light source is configured to provide blue light source light to the ceramic body, wherein the ceramic body comprises a ceramic material configured to wavelength convert part of the blue light source light into yellow converter light, to provide white lighting device light comprising said blue light source light and said yellow converter light, said white lighting device light having a color point selected from the range of 0.18≤u′≤0.25 and 0.42≤v′≤0.54, and wherein the ceramic material comprises a (Y(1-y-q-z),Gdy,Luq, Cez)3(Al(1-x),Gax)5O12 ceramic material, with 0≤x≤0.6, 0≤y≤0.5, 0≤q

    WHITE PHOSPHOR CONVERTED LED WITH STABLE FLUX OUTPUT VERSUS TEMPERATURE
    14.
    发明申请
    WHITE PHOSPHOR CONVERTED LED WITH STABLE FLUX OUTPUT VERSUS TEMPERATURE 审中-公开

    公开(公告)号：US20180026165A1

    公开(公告)日：2018-01-25

    申请号：US15551220

    申请日：2016-02-15

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Hans-Helmut Bechtel ,  Oliver Jens Steigelmann ,  Detlef Uwe Wiechert ,  Matthias Heidemann

    IPC: H01L33/50

    CPC classification number: H01L33/502 ,  G02B6/0003

    Abstract: The invention provides a lighting device comprising a solid state light source and a ceramic body, wherein the solid state light source is configured to provide blue light source light to the ceramic body, wherein the ceramic body comprises a ceramic material configured to wavelength convert part of the blue light source light into yellow converter light, to provide white lighting device light comprising said blue light source light and said yellow converter light, said white lighting device light having a color point selected from the range of 0.18≦u′≦0.25 and 0.42≦v′≦0.54, and wherein the ceramic material comprises a (Y(1-y-q-z),Gdy,Luq, Cez)3(Al(1-x), Gax)5O12 ceramic material, with 0≦x≦0.6, 0≦y≦0.5, 0≦q

    LED with scattering features in substrate
    17.
    发明授权
    LED with scattering features in substrate 有权
    LED在基板中具有散射特征

    公开(公告)号：US09508908B2

    公开(公告)日：2016-11-29

    申请号：US14891344

    申请日：2014-05-05

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Kenneth Vampola ,  Hans-Helmut Bechtel

    IPC: H01L33/60 ,  H01L33/02 ,  H01L33/50

    CPC classification number: H01L33/60 ,  H01L33/02 ,  H01L33/36 ,  H01L33/501 ,  H01L33/502 ,  H01L33/507 ,  H01L33/508 ,  H01L2933/0091

    Abstract: In one embodiment, the transparent growth substrate (38) of an LED die is formed to have light scattering areas (40A-C), such as voids formed by a laser. In another embodiment, the growth substrate is removed and replaced by another substrate that is formed with light scattering areas. In one embodiment, the light scattering areas are formed over the light absorbing areas of the LED die, to reduce the amount of incident light on those absorbing areas, and over the sides (42A, 42B) of the substrate to reduce light guiding. Another embodiment comprises a replacement substrate may be formed to include reflective particles in selected areas where there are no corresponding light generating areas in the LED semiconductor layers such as—type metal contacts (28). This prevents reabsorption into absorbing regions of the semiconductor layer thereby enhancing external efficiency of the device. A 3D structure may be formed by stacking substrate layers containing the reflective areas. The substrate may be a transparent substrate or a phosphor tile (20) that is affixed to the top of the LED.

    Abstract translation: 在一个实施例中，LED管芯的透明生长衬底（38）形成为具有光散射区域（40A-C），例如由激光形成的空隙。 在另一个实施方案中，生长衬底被去除并由用光散射区域形成的另一衬底代替。 在一个实施例中，光散射区域形成在LED管芯的光吸收区域的上方，以减少在这些吸收区域上的入射光的量，并且在衬底的侧面（42A，42B）上减少光引导。 另一个实施例包括替换衬底可以被形成为在LED半导体层中没有对应的发光区域的选定区域中包括反射粒子，例如类型的金属触点（28）。 这防止了再吸收到半导体层的吸收区域中，从而提高了器件的外部效率。 可以通过堆叠包含反射区域的衬底层来形成3D结构。 衬底可以是固定到LED的顶部的透明衬底或荧光砖（20）。

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