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公开(公告)号：US11066600B2
公开(公告)日：2021-07-20
申请号：US16313894
申请日：2017-06-30
Applicant: GRIREM ADVANCED MATERIALS CO., LTD.
Inventor： Ronghui Liu , Weidong Zhuang , Fu Du , Yuanhong Liu , Wei Gao , Xia Zhang , Huibing Xu , Chunpei Yan , Xiaowei Zhang
Abstract: A lutetium nitride-based phosphor and a light emitting device comprising the same, wherein the lutetium nitride-based phosphor comprises an inorganic compound, and the composition of the inorganic compound comprises at least an M element, an A element, a D element and an R element; the M element is one or two elements selected from a group consisting of Lu, La, Pr, Nd, Sm, Y, Tb and Gd, and necessarily comprises Lu; the A element is Si and/or Ge; the D element is one or two elements selected from a group consisting of O, N and F, and necessarily comprises N; the R element is Ce and/or Dy, and the atomic molar ratio of the Lu element in the M element is greater than 50%. Because the ion radius of Lu3+ is smaller than the ion radius of La3+, the light color performance thereof can be flexibly adjusted according to needs.
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公开(公告)号：US09926489B2
公开(公告)日：2018-03-27
申请号：US14900198
申请日：2014-06-20
Inventor： Ronghui Liu , Huibing Xu , Xiaofang Zhou , Chunlei Zhao , Qian Ma , Yuanhong Liu , Huaqiang He , Xiaowei Huang
CPC classification number: C09K11/7792 , C09K11/0883 , C09K11/7721 , C09K11/7734 , C09K11/7749 , C09K11/7773 , C09K11/7774 , H01L33/504
Abstract: The present disclosure relates to a fluorescent powder and a light-emitting device including the same. The fluorescent powder includes an inorganic compound. The inorganic compound contains components including an element M, an element A, an element D, an element E, and an element R. The element M is selected from Eu, Ce, Mn, Tb, Dy, and Tm, the element A is selected from Mg, Ca, Sr, and Ba, the element D is selected from B, Al, Ga, In, La, Gd, Sc, Lu, and Y, the element E is selected from Si, Ge, Zr, and Hf, and the element R is at least two elements selected from N, O, F, and Cl. In a powder X-Ray Diffraction (XRD) spectrum with CoKα radiation, the inorganic compound at least has diffraction peaks within ranges of an Bragg angle (2θ) from 27.3° to 28.3°, 29.7° to 30.7°, 41.9° to 42.9°, and 43.5° to 44.5°.
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Patent Agency Ranking
13.发明申请公开(公告)号：US20170218267A1
公开(公告)日：2017-08-03
申请号：US15321956
申请日：2015-08-03
Inventor： Weidong Zhuang , Jiyou Zhong , Ronghui Liu , Yanfeng Li , Yuanhong Liu , Huibing Xu , Lei Chen
CPC classification number: C09K11/7792 , C09K11/7718 , C09K11/7721 , C09K11/7769 , C09K11/7774 , C30B1/10 , C30B29/22 , H01L33/502 , H01L33/505
Abstract: The application relates to fluorescent powder which has a garnet structure and can be effectively excited by ultraviolet light or blue light, a method for preparing the fluorescent powder, and a light emitting device, an image display device and an illumination device comprising the fluorescent powder. A chemical formula of the fluorescent powder is expressed as: (M1a-xM2x)ZrbM3cOd, where M1 is one or two elements selected from Sr, Ca, La, Y, Lu and Gd, Ca or Sr being necessary; M2 is one or two elements selected from Ce, Pr, Sm, Eu, Tb and Dy, Ce being necessary; M3 is at least one element selected from Ga, Si, and Ge, Ga being necessary; and 2.8≦a≦3.2, 1.9≦b≦2.1, 2.8≦c≦3.2, 11.8≦d≦12.2, and 0.002≦x≦0.6.
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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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