公开(公告)号：US20220019012A1

公开(公告)日：2022-01-20

申请号：US17374739

申请日：2021-07-13

Applicant: Intematix Corporation

Inventor： Yi-Qun Li ,  Xianglong Yuan

IPC: F21V8/00 ,  C09K11/77 ,  C09K11/88 ,  G02B5/04 ,  G02B5/02 ,  G02F1/13357 ,  G02B5/20

Abstract: A display backlight, comprises: an excitation source, LED (146), for generating blue excitation light (148) with a peak emission wavelength in a wavelength range 445 nm to 465 nm; and a photoluminescence wavelength conversion layer (152). The photoluminescence wavelength conversion layer (152) comprises a mixture of a green-emitting photoluminescence material with a peak emission in a wavelength range 530 nm to 545 nm, a red-emitting photoluminescence material with a peak emission in a wavelength range 600 nm to 650 nm and particles of light scattering material.

公开(公告)号：US20200347999A1

公开(公告)日：2020-11-05

申请号：US16909921

申请日：2020-06-23

Applicant: Intematix Corporation

Inventor： Yi-Qun Li ,  Xianglong Yuan ,  Jun-Gang Zhao

IPC: F21K9/64 ,  H01L33/06 ,  F21V15/01 ,  H01L33/62 ,  H01L33/54 ,  H01L33/50 ,  H01L25/075

Abstract: A full spectrum white light emitting device may include a broadband solid-state excitation source for generating broadband excitation light with a dominant wavelength from about 420 nm to about 480 nm and a full width at half maximum intensity greater than about 25 nm; and a narrowband red photoluminescence material with an emission peak wavelength from about 620 nm to about 640 nm and a full width at half maximum emission intensity of less than about 30 nm; where the device has an efficacy of at least 130 lm/W and generates white light with a CRI Ra≥90, and where over a wavelength range from about 430 nm to about 520 nm, a maximum percentage intensity deviation of the white light from the intensity of light of a black-body curve or CIE Standard Illuminant D of the same Correlated Color Temperature is less than about 50%.

公开(公告)号：US20200303355A1

公开(公告)日：2020-09-24

申请号：US16734822

申请日：2020-01-06

Applicant: Intematix Corporation

Inventor： Gang Wang ,  Jun-Gang Zhao ,  Yi-Qun Li

IPC: H01L25/075 ,  H01L33/50

Abstract: An LED-filament includes a partially light-transmissive substrate; 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 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 include 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.

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.

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.

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.

公开(公告)号：US20190241806A1

公开(公告)日：2019-08-08

申请号：US16375848

申请日：2019-04-04

Applicant: Intematix Corporation

Inventor： Yi-Qun Li ,  Xiongfei Shen ,  Haoguo Zhu

IPC: C09K11/88 ,  C09K11/02 ,  C23C16/44 ,  C23C16/442 ,  C23C16/40 ,  H01L33/50

CPC classification number: C09K11/886 ,  C09K11/02 ,  C09K11/025 ,  C23C16/402 ,  C23C16/403 ,  C23C16/405 ,  C23C16/4417 ,  C23C16/442 ,  H01L33/502 ,  H01L33/504 ,  H01L33/505 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48465 ,  H01L2224/49107 ,  H01L2224/73265 ,  H01L2924/181 ,  H01L2924/00014 ,  H01L2924/00012 ,  H01L2924/00

Abstract: A coated phosphor comprises: phosphor particles comprised of a phosphor with composition MSe1−xSx:Eu, wherein M is at least one of Mg, Ca, Sr, Ba and Zn and 0

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.

公开(公告)号：US10274166B2

公开(公告)日：2019-04-30

申请号：US15653071

申请日：2017-07-18

Applicant: Intematix Corporation

Inventor： Yi-Qun Li ,  Haitao Yang ,  Hyung-Chul Lee ,  Charles Edwards

IPC: F21K9/27 ,  F21K9/64 ,  F21V3/02 ,  F21V3/12 ,  F21V5/04 ,  F21V7/00 ,  F21V9/30 ,  F21K9/232 ,  F21V13/02 ,  F21V13/14 ,  F21Y103/10 ,  F21Y107/30 ,  F21Y115/10 ,  F21Y115/30

Abstract: A solid-state linear lamp comprises a co-extruded component, the co-extruded component comprising an elongate lens and a layer of photoluminescent material. The elongate lens is for shaping light emitted from the lamp and comprises an elongate interior cavity. The layer of a photoluminescent material is located on an interior wall of the elongate interior cavity. The lamp further comprises an array of solid-state light emitters configured to emit light into the elongate interior cavity.

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.