Patents by Inventor Xianglong Yuan
Xianglong Yuan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11933461Abstract: A full spectrum light emitting device includes photoluminescence materials which generate light with a peak emission wavelength in a range 490 nm to 680 nm (green to red) and a broadband solid-state excitation source operable to generate broadband blue excitation light with a dominant wavelength in a range from 420 nm to 470 nm, where the broadband blue excitation light includes at least two different blue light emissions in a wavelength range 420 nm to 480 nm.Type: GrantFiled: October 25, 2022Date of Patent: March 19, 2024Assignee: Bridgelux, Inc.Inventors: Xianglong Yuan, Yi-Qun Li
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Patent number: 11887973Abstract: There is provided a full spectrum white light emitting device comprising: 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 and wherein broadband light generated by the broadband LED flip chip is composed of a combination of the multiple narrowband light emissions, and wherein the 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 nType: GrantFiled: February 6, 2023Date of Patent: January 30, 2024Assignee: Intematix CorporationInventors: Yi-Qun Li, Xianglong Yuan, Jun-Gang Zhao
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Publication number: 20230358943Abstract: 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.Type: ApplicationFiled: April 18, 2023Publication date: November 9, 2023Inventors: Yi-Qun Li, Xianglong Yuan
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Publication number: 20230290759Abstract: There is provided a full spectrum white light emitting device comprising: 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 and wherein broadband light generated by the broadband LED flip chip is composed of a combination of the multiple narrowband light emissions, and wherein the 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 nType: ApplicationFiled: February 6, 2023Publication date: September 14, 2023Inventors: Yi-Qun Li, Xianglong Yuan, Jun-Gang Zhao
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Publication number: 20230288033Abstract: A full spectrum light emitting device includes photoluminescence materials which generate light with a peak emission wavelength in a range 490 nm to 680 nm (green to red) and a broadband solid-state excitation source operable to generate broadband blue excitation light with a dominant wavelength in a range from 420 nm to 470 nm, where the broadband blue excitation light includes at least two different blue light emissions in a wavelength range 420 nm to 480 nm.Type: ApplicationFiled: October 25, 2022Publication date: September 14, 2023Inventors: Xianglong Yuan, Yi-Qun Li
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Publication number: 20230176275Abstract: 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.Type: ApplicationFiled: September 13, 2022Publication date: June 8, 2023Inventors: Xianglong Yuan, Yi-Qun Li
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Patent number: 11630258Abstract: 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.Type: GrantFiled: July 13, 2021Date of Patent: April 18, 2023Assignee: Intematix CorporationInventors: Yi-Qun Li, Xianglong Yuan
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Patent number: 11574896Abstract: A full spectrum white light emitting device comprising: a broadband solid-state excitation source operable to generate broadband blue excitation light; and at least one photoluminescence material which generates green to red light, wherein the device generates white light whose intensity over the blue to cyan region of the spectrum has a maximum percentage deviation from the intensity of light of a black-body or CIE Standard Illuminant D of less than 50%.Type: GrantFiled: September 20, 2021Date of Patent: February 7, 2023Assignee: Intematix CorporationInventors: Yi-Qun Li, Xianglong Yuan, Jun-Gang Zhao
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Patent number: 11480308Abstract: A full spectrum light emitting device includes photoluminescence materials which generate light with a peak emission wavelength in a range 490 nm to 680 nm (green to red) and a broadband solid-state excitation source operable to generate broadband blue excitation light with a dominant wavelength in a range from 420 nm to 470 nm, where the broadband blue excitation light includes at least two different blue light emissions in a wavelength range 420 nm to 480 nm.Type: GrantFiled: June 25, 2019Date of Patent: October 25, 2022Assignee: Intematix CorporationInventors: Xianglong Yuan, Yi-Qun Li
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Patent number: 11442218Abstract: 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.Type: GrantFiled: February 14, 2020Date of Patent: September 13, 2022Assignee: Intematix CorporationInventors: Xianglong Yuan, Yi-Qun Li
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Publication number: 20220254963Abstract: A COB type photoelectric device is provided. The COB type photoelectric device includes: a metallic substrate including a photoelectric element fixing area; a dam disposed on the metallic substrate and surrounding the photoelectric element fixing area; first photoelectric elements disposed on the metallic substrate and in the photoelectric element fixing area; a KSF phosphor based layer disposed on the first photoelectric elements and being not in contact with the metallic substrate; and an isolation layer disposed in the dam and covering the KSF phosphor based layer. The KSF phosphor based layer includes a KSF phosphor. The COB type photoelectric device can make full use of high luminous efficiency performance of the KSF, and improve luminous efficiency of the COB type photoelectric device while maintaining stability of the KSF.Type: ApplicationFiled: January 27, 2022Publication date: August 11, 2022Inventors: Debing Huang, Zhikun Shen, Yiqun Li, Gang Wang, Xianglong Yuan
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Publication number: 20220229222Abstract: A display includes a display panel and a backlight. The backlight includes an excitation source that generates blue excitation light with a dominant emission wavelength in a range 445 nm to 465 nm; and a wavelength converting film located remotely to the excitation source and between the excitation source and display panel. The wavelength converting film, in terms of photoluminescence material, includes a manganese-activated fluoride phosphor and a europium activated sulfide phosphor; where the manganese-activated fluoride phosphor receives at least a portion of the blue excitation light and in response emits red light with a peak emission wavelength in a range 610 nm to 650 nm; and where the europium activated sulfide phosphor receives at least a portion of the blue excitation light and in response emits green light having a peak emission wavelength in a range 525 nm to 545 nm; and where the europium activated sulfide phosphor is coated with at least one oxide material.Type: ApplicationFiled: February 3, 2022Publication date: July 21, 2022Inventors: Xianglong Yuan, Gang Wang, Yi-Qun Li
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Publication number: 20220019012Abstract: 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.Type: ApplicationFiled: July 13, 2021Publication date: January 20, 2022Inventors: Yi-Qun Li, Xianglong Yuan
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Publication number: 20220020732Abstract: A full spectrum white light emitting device comprising: a broadband solid-state excitation source operable to generate broadband blue excitation light; and at least one photoluminescence material which generates green to red light, wherein the device generates white light whose intensity over the blue to cyan region of the spectrum has a maximum percentage deviation from the intensity of light of a black-body or CIE Standard Illuminant D of less than 50%.Type: ApplicationFiled: September 20, 2021Publication date: January 20, 2022Inventors: Yi-Qun Li, Xianglong Yuan, Jun-Gang Zhao
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Patent number: 11127721Abstract: A full spectrum white light emitting device includes photoluminescence materials which generate light with a peak emission wavelength in a range from about 490 nm to about 680 nm; and a broadband solid-state excitation source operable to generate broadband excitation light with a dominant wavelength in a range from about 420 nm to about 480 nm. The device is operable to generate white light with a Correlated Color Temperature in a range from about 1800K to about 6800K, a CRI R9 less than 90, a spectrum whose intensity decreases from its maximum value in the orange to red region of the spectrum to about 50% of the maximum value at a wavelength in a range from about 645 nm to about 695 nm, and over a wavelength range from about 430 nm to about 520 nm, a maximum percentage intensity deviation of light emitted by the device is less than 60% from the intensity of light of at least one of a black-body curve and CIE Standard Illuminant D of the same Correlated Color Temperature.Type: GrantFiled: June 16, 2020Date of Patent: September 21, 2021Assignee: Intematix CorporationInventors: Yi-Qun Li, Xianglong Yuan, Jun-Gang Zhao
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Patent number: 11061180Abstract: 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.Type: GrantFiled: April 19, 2018Date of Patent: July 13, 2021Assignee: Intematix CorporationInventors: Yi-Qun Li, Xianglong Yuan
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Patent number: 11054090Abstract: A white light emitting device includes a solid-state excitation source operable to generate excitation light having a dominant wavelength ranging from 440 nm to 455 nm; a first photoluminescence material which generates light having a peak emission wavelength ranging from 500 nm to 530 nm; and a second photoluminescence material which generates light having a peak emission wavelength ranging from 640 nm to 690 nm, where the device is operable to generate white light with an IEC TM-30 Gamut Index Rg ranging from 105 to 115. The device can be operable to generate white light having an IEC TM-30 Fidelity Index Rf which ranges from 85 to 95 and a sum of Gamut Index Rg and fidelity index Rf is greater than or equal to 195 and less than or equal to 200.Type: GrantFiled: January 28, 2020Date of Patent: July 6, 2021Assignee: Intematix CorporationInventors: Xianglong Yuan, Yi-Qun Li
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Publication number: 20210131618Abstract: A full spectrum light emitting device includes photoluminescence materials which generate light with a peak emission wavelength in a range 490 nm to 680 nm (green to red) and a broadband solid-state excitation source operable to generate broadband blue excitation light with a dominant wavelength in a range from 420 nm to 470 nm, where the broadband blue excitation light includes at least two different blue light emissions in a wavelength range 420 nm to 480 nm.Type: ApplicationFiled: June 25, 2019Publication date: May 6, 2021Inventors: Xianglong Yuan, Yi-Qun Li
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Publication number: 20210013185Abstract: A full spectrum white light emitting device includes photoluminescence materials which generate light with a peak emission wavelength in a range from about 490 nm to about 680 nm; and a broadband solid-state excitation source operable to generate broadband excitation light with a dominant wavelength in a range from about 420 nm to about 480 nm. The device is operable to generate white light with a Correlated Color Temperature in a range from about 1800K to about 6800K, a CRI R9 less than 90, a spectrum whose intensity decreases from its maximum value in the orange to red region of the spectrum to about 50% of the maximum value at a wavelength in a range from about 645 nm to about 695 nm, and over a wavelength range from about 430 nm to about 520 nm, a maximum percentage intensity deviation of light emitted by the device is less than 60% from the intensity of light of at least one of a black-body curve and CIE Standard Illuminant D of the same Correlated Color Temperature.Type: ApplicationFiled: June 16, 2020Publication date: January 14, 2021Inventors: Yi-Qun Li, Xianglong Yuan, Jun-Gang Zhao
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Patent number: 10837608Abstract: 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%.Type: GrantFiled: June 23, 2020Date of Patent: November 17, 2020Assignee: Intematix CorporationInventors: Yi-Qun Li, Xianglong Yuan, Jun-Gang Zhao