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    Phosphor converted light emitting diode, a lamp and a luminaire
    35.
    发明授权
    Phosphor converted light emitting diode, a lamp and a luminaire 有权
    荧光转换发光二极管，灯和灯具

    公开(公告)号：US09406849B2

    公开(公告)日：2016-08-02

    申请号：US14419951

    申请日：2013-08-06

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Hans-Helmut Bechtel ,  Matthias Heidemann

    IPC: H01L33/50

    CPC classification number: H01L33/504 ,  H01L33/507 ,  H01L2924/0002 ,  H01L2924/00

    Abstract: A phosphor converted Light Emitting Diode (LED), a lamp and a luminaire are provided. The phosphor converted LED 106 comprises a LED 102, a first luminescent material 166, a second luminescent material 164 and a third luminescent material 162. The LED 102 emits a first spectral distribution having a first peak wavelength in the blue spectral range. The first luminescent material 166 absorbs a portion of the light of the first spectral distribution and converts at least a portion of the absorbed light towards light of a second spectral distribution. The second spectral distribution has a second peak wavelength in the green spectral range. The second luminescent material 164 absorbs absorbing a portion of the light of the first spectral distribution and/or a portion of the second spectral distribution. The second luminescent material 164 converts at least a portion of the absorbed light towards lights of a third spectral distribution. The third spectral distribution has a third spectral width and has a third peak wavelength. The third luminescent material 162 absorbs a portion of the light of at least one of the first spectral distribution, second spectral distribution, and the third spectral distribution. The third luminescent material 162 converts at least a portion of the absorbed light towards light of a fourth spectral distribution. The fourth spectral distribution has a fourth spectral width and has a fourth peak wavelength. The third peak wavelength and the fourth peak wavelength are in the orange/red spectral range. The third peak wavelength is smaller than the fourth peak wavelength and the third spectral width is larger than the fourth spectral width.

    Abstract translation: 提供了磷光体转换发光二极管（LED），灯和照明器。 磷光体转换的LED 106包括LED 102，第一发光材料166，第二发光材料164和第三发光材料162. LED 102发射具有蓝色光谱范围中的第一峰值波长的第一光谱分布。 第一发光材料166吸收第一光谱分布的一部分光，并将至少一部分吸收的光转换成第二光谱分布的光。 第二光谱分布在绿色光谱范围内具有第二峰值波长。 第二发光材料164吸收吸收第一光谱分布的光的一部分和/或第二光谱分布的一部分。 第二发光材料164将吸收的光的至少一部分转换成第三光谱分布的光。 第三光谱分布具有第三光谱宽度并且具有第三峰值波长。 第三发光材料162吸收第一光谱分布，第二光谱分布和第三光谱分布中的至少一个的一部分光。 第三发光材料162将吸收的光的至少一部分转换成第四光谱分布的光。 第四光谱分布具有第四光谱宽度并且具有第四峰值波长。 第三峰值波长和第四峰值波长处于橙色/红色光谱范围。 第三峰值波长小于第四峰值波长，第三光谱宽度大于第四光谱宽度。

    LED WITH SCATTERING FEATURES IN SUBSTRATE
    36.
    发明申请
    LED WITH SCATTERING FEATURES IN SUBSTRATE 有权
    LED在基板上具有散射特征

    公开(公告)号：US20160093782A1

    公开(公告)日：2016-03-31

    申请号：US14891344

    申请日：2014-05-05

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Kenneth Vampola ,  Hans-Helmut Bechtel

    IPC: H01L33/60 ,  H01L33/50

    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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