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    Narrow-Band Red Photoluminescence Materials for Solid-State Light Emitting Devices and Filaments
    41.
    发明申请
    Narrow-Band Red Photoluminescence Materials for Solid-State Light Emitting Devices and Filaments 审中-公开

    公开(公告)号：US20200270520A1

    公开(公告)日：2020-08-27

    申请号：US16628577

    申请日：2018-06-22

    Applicant: Intematix Corporation

    Inventor： Yi-Qun Li

    IPC: C09K11/88 ,  H01L33/50 ,  F21K9/232 ,  C09K11/61 ,  C09K11/77

    Abstract: Light emitting devices and LED-filaments comprise an excitation source (e.g. LED) and a photoluminescence material comprising a combination of a first narrow-band red photoluminescence material which generates light with a peak emission wavelength in a range 580 nm to 628 nm and a full width at half maximum emission intensity in a range 45 nm to 60 nm and a second narrow-band red photoluminescence material generates light with a peak emission wavelength in a range 628 nm to 640 nm and a full width at half maximum emission intensity in a range 5 nm to 20 nm. At least one of the first and second narrow-band red photoluminescence materials can comprise a narrow-band red phosphor or a quantum dot (QD) material.

    Narrow-Band Red Phosphors for LED Lamps
    42.
    发明申请
    Narrow-Band Red Phosphors for LED Lamps 审中-公开

    公开(公告)号：US20200176646A1

    公开(公告)日：2020-06-04

    申请号：US16742910

    申请日：2020-01-14

    Applicant: Intematix Corporation

    Inventor： Yi-Qun Li ,  Gang Wang

    IPC: H01L33/50 ,  F21V31/00 ,  F21K9/232 ,  C09K11/88

    Abstract: A light emitting device (LED-Filament) comprises: a light-transmissive substrate; at least one blue LED chip mounted on the light-transmissive substrate, for instance mounted on a face thereof; and a photoluminescence material at least partially covering the at least one blue LED chip. The photoluminescence material comprises narrow-band red phosphor particles that generates light with a peak emission wavelength in a range of 600 nm to 640 nm and a full width at half maximum emission intensity of 50 nm to 60 nm. The light emitting device is characterized by CRI Ra greater than or equal to about 90. The narrow-band red phosphor particles can comprise at least one Group IIA/IIB selenide sulfide-based phosphor material such as for example CaSe1−xSx:Eu (CSS phosphor). The LED-filament can be incorporated in a lamp, with a yellow to green-emitting phosphor that generates light with a peak emission wavelength in a range of 520 nm to 570 nm, to provide light with a color temperature in a range of 1500 K to 4000 K or 1500 K to 6500 K and a General Color Rendering Index (CRI Ra) greater than or equal to about 90 and a CRI R9 greater than or equal to about 50.

    Coated narrow band green phosphor
    43.
    发明授权
    Coated narrow band green phosphor 有权

    公开(公告)号：US10584280B2

    公开(公告)日：2020-03-10

    申请号：US15775318

    申请日：2017-10-20

    Applicant: Intematix Corporation

    Inventor： Haoguo Zhu ,  Yi-Qun Li

    IPC: C09K11/02 ,  C09K11/77 ,  H01L33/50 ,  F21K9/64 ,  H01L33/32 ,  H01L33/48 ,  H01L33/56 ,  H01L33/60 ,  H01L33/62

    Abstract: A coated phosphor may comprise: phosphor particles comprised of a phosphor with composition (M)(A)2S4: Eu, wherein: M is at least one of Mg, Ca, Sr and Ba; and A is at least one of Ga, Al, In, Y; a dense impermeable (pinhole-free) coating of an oxide material encapsulating individual ones of the phosphor particles. The coated phosphor is configured to satisfy one or more of the conditions: (1) under excitation by blue light, the reduction in photoluminescent intensity at the peak emission wavelength after 1,000 hours of aging at about 85° C. and about 85% relative humidity is no greater than about 30%; (2) the change in chromaticity coordinates CIE(y), ΔCIE y, after 1,000 hours of aging at about 85° C. and about 85% relative humidity is less than about 5×10−3; (3) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least two hours at 85° C.; (4) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least one day at 20° C.; and (5) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least 5 days at 20° C.

    Photoluminescence material coating of LED chips
    45.
    发明授权
    Photoluminescence material coating of LED chips 有权

    公开(公告)号：US10347798B2

    公开(公告)日：2019-07-09

    申请号：US15169648

    申请日：2016-05-31

    Applicant: Intematix Corporation

    Inventor： Bing Dai ,  Xianglong Yuan ,  Yi-Qun Li

    IPC: H01L33/50

    Abstract: A photoluminescence sheet comprises a polymer sheet having particles of at least one photoluminescence material homogeneously distributed throughout its volume. The polymer sheet comprises a UV-curable polymer that is partially cured and which is thermally re-flowable before being fully cured by exposure to UV light.

    LED-based light sources for light emitting devices and lighting arrangements with photoluminescence wavelength conversion
    47.
    发明授权
    LED-based light sources for light emitting devices and lighting arrangements with photoluminescence wavelength conversion 有权

    公开(公告)号：US10204888B2

    公开(公告)日：2019-02-12

    申请号：US15376385

    申请日：2016-12-12

    Applicant: Intematix Corporation

    Inventor： Yi-Qun Li ,  Hwa (Harik) Su ,  Chienli (Jeff) Yang

    IPC: H01L25/075 ,  F21V9/30 ,  H01L33/48 ,  H01L33/50 ,  H01L33/54 ,  F21K9/232 ,  F21K9/64 ,  F21V9/32

    Abstract: An LED-based light source for generating light having a selected dominant wavelength λds comprises a package housing a plurality of LEDs consisting of LEDs from first and second wavelength bins. The first wavelength bin comprises LEDs having a dominant wavelength λd1 that is within a first wavelength range and the second wavelength bin comprises LEDs having a dominant wavelength λd2 that is within a second wavelength range. The first wavelength bin can comprise LEDs having a dominant wavelength that is shorter than the selected dominant wavelength while the second wavelength bin comprises LEDs having a dominant wavelength that is longer than the selected dominant wavelength. The wavelength bins and number of LEDs are selected such that in operation the dominant wavelength of the combined light emitted by the source is the selected dominant wavelength. Lighting arrangements and light emitting devices incorporating such light sources are disclosed.

    SOLID-STATE LAMPS UTILIZING PHOTOLUMINESCENCE WAVELENGTH CONVERSION COMPONENTS
    49.
    发明申请
    SOLID-STATE LAMPS UTILIZING PHOTOLUMINESCENCE WAVELENGTH CONVERSION COMPONENTS 审中-公开

    公开(公告)号：US20180328548A1

    公开(公告)日：2018-11-15

    申请号：US15815577

    申请日：2017-11-16

    Applicant: Intematix Corporation

    Inventor： Yi-Qun Li

    IPC: F21K9/64 ,  H01L33/50 ,  G02B6/00 ,  F21K9/233 ,  F21K9/232 ,  F21V29/70 ,  F21V29/83 ,  F21V29/506 ,  F21V3/02 ,  F21V7/04 ,  F21Y115/10

    CPC classification number: F21K9/64 ,  F21K9/232 ,  F21K9/233 ,  F21V3/02 ,  F21V7/048 ,  F21V29/506 ,  F21V29/70 ,  F21V29/83 ,  F21Y2115/10 ,  G02B6/00 ,  G02B6/0096 ,  H01L33/50

    Abstract: Disclosed are improved photoluminescence wavelength conversion components and lamps that incorporate such components. The photoluminescence wavelength conversion component comprises a hollow cylindrical tube having a given bore of diameter and an axial length. The relative dimensions and shape of the component can affect the radial emission pattern of the component and are configured to give a required emission pattern (typically omnidirectional). The photoluminescence material can be homogeneously distributed throughout the volume of the component during manufacture of the component. An extrusion method can be used to form the improved photoluminescence wavelength conversion component. Injection molding or casting can also be used to form the component. Another possible approach is to manufacture the component is by forming a flexible sheet material to include the phosphor and/or quantum dots, and then rolling the sheet material into the desired shape and dimensions for the component. The improved wavelength conversion components and lamps that incorporate these components provide for improved emission characteristic, while allowing for relatively cost-effective manufacturing costs. A further advantage of components is that their light emission resembles a filament of a conventional incandescent light bulb.

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