Patents by Inventor Yuanhong LIU
Yuanhong LIU 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: 11942577Abstract: 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.Type: GrantFiled: August 22, 2019Date of Patent: March 26, 2024Assignee: GRIREM ADVANCED MATERIALS CO., LTD.Inventors: Ronghui Liu, Yuanhong Liu, Yanfeng Li, Xiaoxia Chen, Xiaole Ma, Yuan Xue
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Patent number: 11932793Abstract: 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 ?m?R?40 ?m; any distance from the particle surface to the centroid is r, and 0<r<½R; and the space with the distance from the particle surface to the centroid direction being less than or equal to r is defined as rinner.Type: GrantFiled: May 19, 2022Date of Patent: March 19, 2024Assignees: GRIREM ADVANCED MATERIALS CO., LTD., Grirem Hi-Tech Co., Ltd, Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd.Inventors: Ronghui Liu, Shaowei Qin, Yuanhong Liu, Yanfeng Li, Xiaoxia Chen, Xiaole Ma, Yuan Xue
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Patent number: 11932790Abstract: Disclosed are a red light and near-infrared light-emitting material and a preparation method thereof, and a light-emitting device including the light-emitting material. The red light and near-infrared light-emitting material contains a compound represented by a molecular formula, aSc2O3·Ga2O3·bR2O3, wherein the element R includes one or two of Cr, Ni, Fe, Yb, Nd or Er; 0.001?a?0.6; and 0.001?b?0.1. The light-emitting material can be excited by a spectrum having a wide wavelength range (ultraviolet light or purple light or blue light) to emit light with a wide spectrum of 650 nm to 1700 nm or multiple spectra, thus having higher light-emitting intensity.Type: GrantFiled: July 9, 2019Date of Patent: March 19, 2024Assignee: GRIREM ADVANCED MATERIALS CO., LTD.Inventors: Xiaoxia Chen, Yuanhong Liu, Ronghui Liu, Yuan Xue
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Patent number: 11923485Abstract: 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.Type: GrantFiled: August 22, 2019Date of Patent: March 5, 2024Assignee: GRIREM ADVANCED MATERIALS CO., LTD.Inventors: Ronghui Liu, Yuanhong Liu, Xiaoxia Chen, Yuan Xue, Xiaole Ma
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Patent number: 11718788Abstract: 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.Type: GrantFiled: July 9, 2019Date of Patent: August 8, 2023Assignee: GRIREM ADVANCED MATERIALS CO., LTDInventors: Ronghui Liu, Yuanhong Liu, Xiaoxia Chen, Xiaole Ma, Yuan Xue, Tongyu Gao
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Patent number: 11680203Abstract: 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.Type: GrantFiled: October 18, 2017Date of Patent: June 20, 2023Assignee: GRIREM ADVANCED MATERIALS CO., LTD.Inventors: Ronghui Liu, Guantong Chen, Yuanhong Liu, Xiaole Ma
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Publication number: 20220411694Abstract: 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 ?m?R?40 ?m; any distance from the particle surface to the centroid is r, and 0<r<½R; and the space with the distance from the particle surface to the centroid direction being less than or equal to r is defined as rinner.Type: ApplicationFiled: May 19, 2022Publication date: December 29, 2022Inventors: Ronghui LIU, Shaowei QIN, Yuanhong LIU, Yanfeng LI, Xiaoxia CHEN, Xiaole MA, Yuan XUE
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Patent number: 11518935Abstract: The present invention belongs to the technical field of inorganic luminescent materials, particularly relates to a nitride fluorescent material, and further discloses a light-emitting device containing such a fluorescent material. The nitride fluorescent material contains a compound with a structure like MmAlxSiyN3: aR, bEu, cCe. The fluorescent material has very high physical stability and chemical stability, and the fluorescent material is better in crystallization, and thus has relatively high external quantum efficiency. When being applied to a light-emitting device, the fluorescent material can fully exert the advantages of good stability and high external quantum efficiency, and the light-emitting efficiency and stability of the light-emitting device can be further improved.Type: GrantFiled: September 13, 2018Date of Patent: December 6, 2022Assignees: GRIREM ADVANCED MATERIALS CO., LTD., GUOKE RE ADVANCED MATERIALS CO., LTD.Inventors: Ronghui Liu, Yuanhong Liu, Lei Chen, Ze Jiang, Lengleng Shao
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Patent number: 11485907Abstract: 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.Type: GrantFiled: September 29, 2018Date of Patent: November 1, 2022Assignees: GRIREM ADVANCED MATERIALS CO., LTD., GUOKE RE ADVANCED MATERIALS CO., LTD.Inventors: Ronghui Liu, Yuanhong Liu, Xia Zhang, Wei Gao, Xiaole Ma, Huibing Xu
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Publication number: 20220173282Abstract: 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.Type: ApplicationFiled: August 22, 2019Publication date: June 2, 2022Inventors: Ronghui LIU, Yuanhong LIU, Xiaoxia CHEN, Yuan XUE, Xiaole MA
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Publication number: 20220173281Abstract: 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.Type: ApplicationFiled: August 22, 2019Publication date: June 2, 2022Inventors: Ronghui LIU, Yuanhong LIU, Yanfeng LI, Xiaoxia CHEN, Xiaole MA, Yuan XUE
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Publication number: 20220119704Abstract: 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.Type: ApplicationFiled: July 9, 2019Publication date: April 21, 2022Inventors: Ronghui LIU, Yuanhong LIU, Xiaoxia CHEN, Xiaole MA, Yuan XUE, Tongyu GAO
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Patent number: 11299672Abstract: 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.Type: GrantFiled: September 13, 2018Date of Patent: April 12, 2022Assignees: GRIREM ADVANCED MATERIALS CO., LTD., GUOKE RE ADVANCED MATERIALS CO., LTD.Inventors: Ronghui Liu, Xiaoxia Chen, Yuanhong Liu, Yanfeng Li, Xiaole Ma
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Patent number: 11292360Abstract: A battery equalization method includes: obtaining a voltage value of a to-be-equalized cell in a battery pack; obtaining a reference voltage value required for equalization; determining a target equalization duration of the to-be-equalized cell according to a voltage value of the to-be-equalized cell, the reference voltage value, and a preset equalization duty cycle, where the equalization duty cycle is a ratio of an equalization period in a unit cycle to the unit cycle, and the unit cycle includes the equalization period and a sampling period; and controlling equalization of the to-be-equalized cell in the equalization period in the unit cycle according to the target equalization duration. According to this method, sampling is separated from equalization in a unit cycle, thereby ensuring accuracy of collected battery information, making the calculated equalization duration relatively accurate, and improving equalization effects of the battery pack.Type: GrantFiled: August 31, 2018Date of Patent: April 5, 2022Assignee: BYD COMPANY LIMITEDInventors: Hongbin Luo, Chao Wang, Xiaofeng Shen, Qiuyong Zeng, Yuanhong Liu, Xiang Zhang
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Publication number: 20210388262Abstract: Disclosed are a red light and near-infrared light-emitting material and a preparation method thereof, and a light-emitting device including the light-emitting material. The red light and near-infrared light-emitting material contains a compound represented by a molecular formula, aSc2O3.Ga2O3.bR2O3, wherein the element R includes one or two of Cr, Ni, Fe, Yb, Nd or Er; 0.001?a?0.6; and 0.001?b?0.1. The light-emitting material can be excited by a spectrum having a wide wavelength range (ultraviolet light or purple light or blue light) to emit light with a wide spectrum of 650 nm to 1700 nm or multiple spectra, thus having higher light-emitting intensity.Type: ApplicationFiled: July 9, 2019Publication date: December 16, 2021Inventors: Xiaoxia CHEN, Yuanhong LIU, Ronghui LIU, Yuan XUE
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Patent number: 11098249Abstract: Phosphor, a preparation method for the phosphor, and a light emitting device having the phosphor. The phosphor comprises an inorganic compound which at least comprises an element M, an element A, an element D, and an element R; the element M is one or two elements selected from the group consisting of Lu, La, Pr, Nd, Sm, Y, Tb, and Gd and must comprise Lu; the element A is Si and/or Ge; the element D is one or two elements selected from the group consisting of O, N, and F and must comprise N; the element R is Ce and/or Dy. Since the ionic radius of Lu3+ is smaller than that of La3+, when the inorganic compound comprises element Lu, the original ligand site would be contracted. In order to reduce lattice distortion due to the ligand site contraction, the adjacent ligand site expands, and the photochromic property is adjusted.Type: GrantFiled: June 30, 2017Date of Patent: August 24, 2021Assignee: GRIREM ADVANCED MATERIALS CO., LTD.Inventors: Ronghui Liu, Weidong Zhuang, Fu Du, Yuanhong Liu, Wei Gao, Xia Zhang, Huibing Xu, Chunpei Yan, Xiaowei Zhang
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Patent number: 11066600Abstract: 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.Type: GrantFiled: June 30, 2017Date of Patent: July 20, 2021Assignee: GRIREM ADVANCED MATERIALS CO., LTD.Inventors: Ronghui Liu, Weidong Zhuang, Fu Du, Yuanhong Liu, Wei Gao, Xia Zhang, Huibing Xu, Chunpei Yan, Xiaowei Zhang
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Publication number: 20210155848Abstract: 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.Type: ApplicationFiled: October 18, 2017Publication date: May 27, 2021Inventors: Ronghui LIU, Guantong CHEN, Yuanhong LIU, Xiaole MA
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Publication number: 20210139775Abstract: The present invention belongs to the technical field of inorganic luminescent materials, particularly relates to a nitride fluorescent material, and further discloses a light-emitting device containing such a fluorescent material. The nitride fluorescent material contains a compound with a structure like MmAlxSiyN3: aR, bEu, cCe. The fluorescent material has very high physical stability and chemical stability, and the fluorescent material is better in crystallization, and thus has relatively high external quantum efficiency. When being applied to a light-emitting device, the fluorescent material can fully exert the advantages of good stability and high external quantum efficiency, and the light-emitting efficiency and stability of the light-emitting device can be further improved.Type: ApplicationFiled: September 13, 2018Publication date: May 13, 2021Inventors: RONGHUI LIU, Yuanhong LIU, LEI CHEN, ZE JIANG, LENGLENG SHAO
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Patent number: 10990367Abstract: Embodiments of the present application disclose an application development method performed at a computing device. The method includes: obtaining an input file in a predetermined format, the input file including content code of each part used for forming an application; disassembling the content code of each part in the input file into different category code according to corresponding categories; invoking a corresponding compiler according to an attribute of each piece of the category code, to compile the category code, to correspondingly obtain a description file of each piece of the category code; and performing plug-in processing on the description file of the category code of each part, to obtain the application.Type: GrantFiled: June 21, 2019Date of Patent: April 27, 2021Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Cheng Gong, Yuanhong Liu, Ji Zhang, Yuanming Li, Yu Zhong, Jiangwei Xu