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    High brightness, low-cri semiconductor light emitting devices including narrow-spectrum luminescent materials
    1.
    发明授权
    High brightness, low-cri semiconductor light emitting devices including narrow-spectrum luminescent materials 有权

    公开(公告)号：US09905735B1

    公开(公告)日：2018-02-27

    申请号：US15475366

    申请日：2017-03-31

    Applicant: Cree, Inc.

    Inventor： Florin A. Tudorica ,  Brian Thomas Collins

    IPC: H01L29/20 ,  H01L21/00 ,  H01L33/50 ,  H01L51/42

    CPC classification number: H01L33/502 ,  H01L51/42

    Abstract: A semiconductor light emitting device includes an LED and a recipient luminophoric medium that includes a first narrow-spectrum luminescent material that down-converts a first portion of the radiation emitted by the LED to radiation having a first peak wavelength in the green-yellow color range and a second narrow-spectrum luminescent material that down-converts a second portion of the radiation emitted by the LED to radiation having a second peak wavelength in an orange-red color range. The first and second luminescent materials and any additional narrow-spectrum luminescent materials that are included in the recipient luminophoric medium generate at least 80% of the light emitted by the recipient luminophoric medium. A CRI value of the combined light emitted by the semiconductor light emitting device is at least 60 and less than 80.

    Semiconductor Light Emitting Devices Including Multiple Red Phosphors That Exhibit Good Color Rendering Properties With Increased Brightness
    4.
    发明申请
    Semiconductor Light Emitting Devices Including Multiple Red Phosphors That Exhibit Good Color Rendering Properties With Increased Brightness 审中-公开
    包括多个红色荧光体的半导体发光器件，它们随着亮度的增加而呈现良好的色彩呈现特性

    公开(公告)号：US20150060922A1

    公开(公告)日：2015-03-05

    申请号：US14471697

    申请日：2014-08-28

    Applicant: Cree, Inc.

    Inventor： Robert Wilcox ,  Brian Thomas Collins

    IPC: H01L33/50

    CPC classification number: H01L33/504 ,  C09K11/0883 ,  C09K11/7734 ,  H01L33/502 ,  H01L2224/48091 ,  H01L2224/8592 ,  H01L2924/00014

    Abstract: A light emitting device includes a light emitting diode chip (“LED”) that emits light having a dominant wavelength in the blue color range and a recipient luminophoric medium that is configured to down-convert at least some of the light emitted by the LED. The recipient luminophoric medium includes a green phosphor, a yellow phosphor, a first red phosphor having a first dominant wavelength and a second red phosphor having a second dominant wavelength that is different from the first dominant wavelength.

    Abstract translation: 发光装置包括发射蓝色区域中的主波长的光的发光二极管芯片（“LED”）和被配置为对由LED发射的至少一些光进行下变频的接收器发光体介质。 受体发光体包括绿色荧光体，黄色荧光体，具有第一主要波长的第一红色荧光体和具有与第一主要波长不同的第二主波长的第二红色荧光体。

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