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公开(公告)号：US11923485B2
公开(公告)日：2024-03-05
申请号：US17254228
申请日：2019-08-22
Applicant: GRIREM ADVANCED MATERIALS CO., LTD
Inventor： Ronghui Liu , Yuanhong Liu , Xiaoxia Chen , Yuan Xue , Xiaole Ma
CPC classification number: H01L33/504 , C09K11/7708 , C09K11/77347 , C09K11/77348 , C09K11/7774 , C09K11/7776
Abstract: An optical device includes an LED chip, a visible-light luminescent material, and a near-infrared luminescent material, wherein a luminous power of light emitted by the near-infrared and visible-light luminescent materials in a band of 650-1000 nm under the excitation of the LED chip is A, and a sum of a luminous power of light emitted by the near-infrared and visible-light luminescent materials in a band of 350-650 nm under the excitation of the LED chip and a luminous power of residual light emitted by the LED chip in the band of 350-650 nm after the LED chip excites the near-infrared and visible-light luminescent materials is B, with B/A*100% being 0.1%-10%. According to the implementation where the optical device employs the LED chip to combine the near-infrared luminescent material and the visible-light luminescent material simultaneously.
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公开(公告)号：US11932793B2
公开(公告)日：2024-03-19
申请号：US17748789
申请日：2022-05-19
Applicant: GRIREM ADVANCED MATERIALS CO., LTD. , GRIREM HI-TECH CO., LTD. , Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd.
Inventor： Ronghui Liu , Shaowei Qin , Yuanhong Liu , Yanfeng Li , Xiaoxia Chen , Xiaole Ma , Yuan Xue
CPC classification number: C09K11/7774 , C09K11/02 , H01L33/502 , C01P2004/84
Abstract: The invention relates to a phosphor with garnet structure and a light-emitting device comprising the phosphor, wherein the phosphor includes the following components in percentage by weight: 38.47-45.19% of Y element, 9.49-22.09% of Al element, 2.06-24.31% of Ga element, 27.3-32.04% of O element, 0.43-1.46% of Ce element. In the phosphor particles, the shortest distance from the surface of one side of the particle to the surface of the opposite side through the centroid of the particle is defined as R, the longest distance is R1, and 5 μm≤R≤40 μm; any distance from the particle surface to the centroid is r, and 0
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Patent Agency Ranking
公开(公告)号：US11485907B2
公开(公告)日：2022-11-01
申请号：US16469114
申请日：2018-09-29
Inventor： Ronghui Liu , Yuanhong Liu , Xia Zhang , Wei Gao , Xiaole Ma , Huibing Xu
Abstract: The present disclosure relates to the technical field of luminescent materials, and more particularly, to a nitride luminescent material and a light emitting device comprising the luminescent material. The nitride luminescent material recited in the present disclosure includes an inorganic compound with the structural composition RwQxSiyNz, the excitation wavelength of the luminescent material is between 300-650 nm, and the emission main peak of the NIR light region is broadband emission between 900-1100 nm; the excitation wavelength of the luminescent material is relatively broad and capable of excellent absorption of ultraviolet visible light, and has more intensive NIR emission as compared with NIR organic luminescent materials and inorganic luminescent materials of other systems, so it is an ideal application material for NIR devices.
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公开(公告)号：US11942577B2
公开(公告)日：2024-03-26
申请号：US17254226
申请日：2019-08-22
Applicant: GRIREM ADVANCED MATERIALS CO., LTD
Inventor： Ronghui Liu , Yuanhong Liu , Yanfeng Li , Xiaoxia Chen , Xiaole Ma , Yuan Xue
CPC classification number: H01L33/504 , C09K11/7716 , C09K11/77217 , G02B5/208 , H01L33/30
Abstract: An optical device includes an LED chip, a light absorber and/or visible-light luminescent material, and a near-infrared luminescent material, wherein a luminous power of light emitted by the near-infrared luminescent material and the light absorber and/or visible-light luminescent material in a band of 650-1000 nm under the excitation of the LED chip is A, and a sum of a luminous power of light emitted by the near-infrared and visible-light luminescent materials in a band of 350-650 nm under the excitation of the LED chip and a luminous power of residual light emitted by the LED chip in the band of 350-650 nm after the LED chip excites the near-infrared and visible-light luminescent materials is B, with B/A*100% being 0.1%-10%. According to the implementation where the optical device employs the LED chip to combine the near-infrared luminescent material and the light absorber and/or visible-light luminescent material simultaneously.
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公开(公告)号：US11718788B2
公开(公告)日：2023-08-08
申请号：US17254225
申请日：2019-07-09
Applicant: GRIREM ADVANCED MATERIALS CO., LTD
Inventor： Ronghui Liu , Yuanhong Liu , Xiaoxia Chen , Xiaole Ma , Yuan Xue , Tongyu Gao
CPC classification number: C09K11/7734 , C09K11/7792 , H01L33/26 , H01L33/502
Abstract: The present invention discloses a red light and near-infrared light-emitting material and a light-emitting device. The red light and near-infrared light-emitting material contains a compound represented by a molecular formula, xA2O3·yIn2O3·bR2O3, wherein the element A is Sc and/or Ga; the element R is one or two of Cr, Yb, Nd or Er and necessarily includes Cr; and 0.001≤x≤1, 0.001≤y≤1, 0.001≤b≤0.2, and 0.001≤b/(x+y)≤0.2. The light-emitting material can be excited by a technically mature blue light source to emit light with a high-intensity wide-spectrum or multiple spectra. Compared with existing materials, the light-emitting material has higher luminescent intensity. The light-emitting device uses an LED chip to combine an infrared light-emitting material and a visible light light-emitting material. In this way, the same LED chip can emit near-infrared light and visible light at the same time, which greatly simplifies the packaging process and reduces the packaging cost.
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公开(公告)号：US11680203B2
公开(公告)日：2023-06-20
申请号：US16612299
申请日：2017-10-18
Applicant: GRIREM ADVANCED MATERIALS CO., LTD.
Inventor： Ronghui Liu , Guantong Chen , Yuanhong Liu , Xiaole Ma
CPC classification number: C09K11/677 , C09K11/025 , H01L33/502
Abstract: The present invention relates to a red phosphor, a preparation method thereof and a light-emitting device prepared therefrom. A particle of the red phosphor consists of a phosphor inner core having a chemical formula of Ax1Gez1F6:y1Mn4+ and an outer shell having a chemical formula of Bx2Mz2F6:y2Mn4+, wherein 1.596≤x1≤2.2, 1.6≤x2≤2.2, 0.001≤y1≤0.2, 0≤y2≤0.2, 0.9≤z1≤1.1, and 0.9≤z2≤1.1; A and B are independently selected from alkali metal elements; and M is Si, or Si and Ge. The red phosphor provided by the present invention has high luminous efficiency and stability. Moreover, the phosphor alone or in combination with other luminescent materials can be used for preparing a light-emitting device with high performance.
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公开(公告)号：US11299672B2
公开(公告)日：2022-04-12
申请号：US16612315
申请日：2018-09-13
Inventor： Ronghui Liu , Xiaoxia Chen , Yuanhong Liu , Yanfeng Li , Xiaole Ma
Abstract: The near-infrared luminescent material is capable of efficiently emitting near-infrared light with a peak wavelength of 900 nm to 1,100 nm under an effective excitation wavelength of 250 nm to 750 nm. The luminescent material has the characteristics of wide excitation emission wavelength, high luminous efficiency, uniform luminescence, no impurity phase, high stability, simple preparation and the like. The present invention further provides the light-emitting device prepared from the near-infrared luminescent material. The luminescent material and the light-emitting device provided by the present invention solve the problems of poor stability, low luminous efficiency, high preparation cost and the like of a conventional near-infrared luminescent material and light-emitting device, and have a favorable application prospect.
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