中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

78 records (took 0.018 seconds)

    Lutetium nitride-based phosphor and light emitting device comprising same
    32.
    发明授权
    Lutetium nitride-based phosphor and light emitting device comprising same 有权

    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

    IPC: C09K11/77 ,  C09K11/08 ,  H01L33/50

    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.

    RED PHOSPHOR, PREPARATION METHOD THEREOF AND LIGHT-EMITTING DEVICE PREPARED THEREFROM
    33.
    发明申请
    RED PHOSPHOR, PREPARATION METHOD THEREOF AND LIGHT-EMITTING DEVICE PREPARED THEREFROM 有权

    公开(公告)号：US20210155848A1

    公开(公告)日：2021-05-27

    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

    IPC: C09K11/67 ,  C09K11/02 ,  H01L33/50

    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.

    LUTETIUM NITRIDE-BASED PHOSPHOR AND LIGHT EMITTING DEVICE COMPRISING SAME
    34.
    发明申请
    LUTETIUM NITRIDE-BASED PHOSPHOR AND LIGHT EMITTING DEVICE COMPRISING SAME 审中-公开

    公开(公告)号：US20190225882A1

    公开(公告)日：2019-07-25

    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

    IPC: C09K11/77 ,  C09K11/08 ,  H01L33/50

    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.

    Method of recovering rare earth aluminum and silicon from rare earth-containing aluminum-silicon scraps
    35.
    发明授权
    Method of recovering rare earth aluminum and silicon from rare earth-containing aluminum-silicon scraps 有权

    公开(公告)号：US10280482B2

    公开(公告)日：2019-05-07

    申请号：US15736874

    申请日：2016-06-16

    Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

    Inventor： Xiaowei Huang ,  Yang Xu ,  Jinyu Wang ,  Liangshi Wang ,  Zongyu Feng ,  Dali Cui ,  Zhiqi Long ,  Xu Sun ,  Na Zhao

    IPC: C22B7/00 ,  C01F7/04 ,  C01F7/06 ,  C01F7/22 ,  C01F7/24 ,  C01F7/26 ,  C01F17/00 ,  C22B21/00 ,  C22B59/00 ,  C22B3/44

    Abstract: Disclosed is a method of recovering rare earth, aluminum and silicon from rare earth-containing aluminum-silicon scrap. The method comprises: S1, acid-leaching the rare earth-containing aluminum-silicon scrap with an inorganic acid aqueous solution to obtain a silicon-rich slag and acid leached solution containing rare earth and aluminum element; S2, adding an alkaline substance into the acid leached solution containing the rare earth and aluminum element and controlling a PH value of the acid leaching solution between 3.5 to 5.2, performing a solid-liquid separation to obtain a aluminum hydroxide-containing precipitate and a rare earth-containing solution filter; S3, reacting the aluminum hydroxide containing precipitate with sodium hydroxide to obtain sodium metaaluminate solution and aluminum-silicon slag, and preparing a rare earth compound product with the rare earth-containing filtrate. The method dissolves an the aluminum and the rare earth with the acid and then via step wise alkaline conversion, convert aluminum icons to an aluminum hydroxide precipitate separated from rare earth ions, and then adds excessive amounts of sodium hydroxide to convert the aluminum hydroxide to a sodium metaaluminate solution, thereby realizing high-efficiency recovery of both rare earth and aluminum while significantly reducing the consumption of the sodium hydroxide and thus recovery cost.

Patent Agency Ranking