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公开(公告)号：US20250054919A1
公开(公告)日：2025-02-13
申请号：US18427182
申请日：2024-01-30
Applicant: Intematix Corporation
Inventor： Yi-Qun Li , Xianglong Yuan , Jun-Gang Zhao
IPC: H01L25/075 , H01L33/06 , H01L33/08 , H01L33/32 , H01L33/50
Abstract: A device may include a broadband LED flip chip that generates broadband light of dominant wavelength from about 420 nm to about 480 nm and a FWHM from 25 nm to 50 nm; and at least one photoluminescence layer covering a light emitting face of the broadband LED flip chip; wherein the broadband LED flip chip comprises a broadband InGaN/GaN multiple quantum wells LED chip comprising multiple different wavelength quantum wells in its active region that generate multiple narrowband light emissions of multiple different wavelengths, where broadband light generated by the broadband LED flip chip includes a combination of the multiple narrowband light emissions, and where at least one photoluminescence material layer comprises a first photoluminescence material which generates light with a peak emission wavelength from 490 nm to 550 nm; and a second photoluminescence material which generates light with a peak emission wavelength from 600 nm to 680 nm.
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公开(公告)号：US11442218B2
公开(公告)日：2022-09-13
申请号：US16791702
申请日：2020-02-14
Applicant: Intematix Corporation
Inventor： Xianglong Yuan , Yi-Qun Li
IPC: F21V8/00 , G02F1/13357 , C09K11/88 , C09K11/61 , C09K11/67 , C09K11/77 , G02F1/1335
Abstract: There is provided a display backlight (604), including an excitation source (644) for generating blue light (650); and a wavelength converter (654) being a unitary construction including a combination of a wavelength selective filter layer (658) bonded to a photoluminescence layer (660), where the photoluminescence layer (658) includes a green photoluminescence material and a red photoluminescence material; and where the wavelength selective filter layer (658) is transmissive to blue light and reflective to green and red light.
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公开(公告)号：US20220107060A1
公开(公告)日：2022-04-07
申请号：US17543639
申请日：2021-12-06
Applicant: Intematix Corporation
Inventor： Gang Wang , Jun-Gang Zhao , Yi-Qun Li
IPC: F21K9/232 , H01L25/075 , H01L33/50 , C09K11/61 , C09K11/77
Abstract: An LED-filament comprising: a partially light transmissive substrate; a plurality of LED chips on a front face of the substrate; a photoluminescence material that is in direct contact with and covers all of the plurality of LED chips; and a light scattering layer that is in direct contact with and covers at least the photoluminescence material, wherein the light scattering layer comprises particles of light scattering material, and wherein the photoluminescence material comprises broadband green to red photoluminescence materials and narrowband red photoluminescence material.
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公开(公告)号：US20200303354A1
公开(公告)日：2020-09-24
申请号：US16540019
申请日：2019-08-13
Applicant: Intematix Corporation
Inventor： Gang Wang , Jun-Gang Zhao , Yi-Qun Li
IPC: H01L25/075 , H01L33/50
Abstract: An LED-filament comprising: a partially light-transmissive substrate; a plurality of blue LED chips mounted on a front face of the substrate; first broad-band green to red photoluminescence materials and a first narrow-band manganese-activated fluoride red photoluminescence material covering the plurality of blue LED chips and the front face of the substrate; and second broad-band green to red photoluminescence materials covering the back face of the substrate. The LED-filament can further comprise a second narrow-band manganese-activated fluoride red photoluminescence material on the back face of the substrate in an amount that is less than 5 wt % of a total red photoluminescence material content on the back face of the substrate.
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公开(公告)号：US20200264361A1
公开(公告)日：2020-08-20
申请号：US16791702
申请日：2020-02-14
Applicant: Intematix Corporation
Inventor： Xianglong Yuan , Yi-Qun Li
Abstract: There is provided a display backlight (604), including an excitation source (644) for generating blue light (650); and a wavelength converter (654) being a unitary construction including a combination of a wavelength selective filter layer (658) bonded to a photoluminescence layer (660), where the photoluminescence layer (658) includes a green photoluminescence material and a red photoluminescence material; and where the wavelength selective filter layer (658) is transmissive to blue light and reflective to green and red light.
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Patent Agency Ranking
公开(公告)号：US10557594B2
公开(公告)日：2020-02-11
申请号：US15815577
申请日：2017-11-16
Applicant: Intematix Corporation
Inventor： Yi-Qun Li
IPC: F21K9/64 , F21K9/232 , F21K9/233 , G02B6/00 , H01L33/50 , F21V8/00 , F21V3/02 , F21V7/04 , F21V29/506 , F21V29/70 , F21V29/83 , F21Y115/10
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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公开(公告)号：US10535805B2
公开(公告)日：2020-01-14
申请号：US15870705
申请日：2018-01-12
Applicant: Intematix Corporation
IPC: F21V21/00 , H01L33/50 , C09K11/88 , F21K9/232 , F21V31/00 , F21K9/237 , F21V19/00 , F21V3/10 , F21V3/06 , F21Y103/10 , F21Y115/10
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-x Sx: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.
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公开(公告)号：US10234725B2
公开(公告)日：2019-03-19
申请号：US15078921
申请日：2016-03-23
Applicant: Intematix Corporation
Inventor： Haitao Yang , Yi-Qun Li
IPC: G02F1/1333 , G02F1/1335 , G02B5/20 , G02F1/1343
Abstract: A photoluminescence color display comprises a display panel that displays red, green and blue sub-pixel areas, an excitation source operable to generate excitation radiation for operating the display, and a combined layer of photoluminescence materials and filter pigments. The combined layer comprises at least one photoluminescence material, such as a phosphor material or quantum dots, that is operable to emit light corresponding to red, green and blue sub-pixel areas of the display in response to said excitation radiation.
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公开(公告)号：US20180204984A1
公开(公告)日：2018-07-19
申请号：US15588262
申请日：2017-05-05
Applicant: Intematix Corporation
Abstract: A light emitting device (LED-Filament) comprises: a light-transmissive substrate; at least one blue LED chip mounted on a face of the light-transmissive substrate; and a photoluminescence material at least partially covering the at least one blue LED chip. The photoluminescence material comprises phosphor particles of at least one Group IIA/IIB selenide sulfide-based phosphor material that generates red 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 55 nm. The LED-filament can be incorporated in a lamp, with a yellow to green-emitting phosphor that generates yellow to green 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 and a General Color Rendering Index (CRI Ra) of greater than or equal to 90 and a CRI R9 greater than or equal to 50.
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10.发明申请公开(公告)号：US20180130775A1
公开(公告)日：2018-05-10
申请号：US15376385
申请日：2016-12-12
Applicant: Intematix Corporation
Inventor： Yi-Qun Li , Hwa (Harik) Su , Chienli (Jeff) Yang
CPC classification number: H01L25/0753 , F21K9/232 , F21K9/64 , F21V9/30 , F21V9/32 , H01L33/486 , H01L33/507 , H01L33/54 , H01L2224/48091 , H01L2224/73265 , H01L2924/0002 , H01L2924/00014 , H01L2924/00
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 whilst 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.
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