公开(公告)号：US10047286B2

公开(公告)日：2018-08-14

申请号：US14950644

申请日：2015-11-24

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Fangming Du ,  William Winder Beers ,  William Erwin Cohen ,  Clark David Nelson ,  Jenna Marie Novak ,  John Matthew Root ,  James Edward Murphy ,  Srinivas Prasad Sista

IPC: C09K11/61 ,  C09K11/62 ,  C09K11/64 ,  C09K11/66 ,  H01L33/00 ,  H01L33/50

Abstract: A process for preparing a Mn+4 doped phosphor of formula I Ax[MFy|:Mn+4  I includes gradually adding a first solution to a second solution and periodically discharging the product liquor from the reactor while volume of the product liquor in the reactor remains constant; wherein A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; and y is 5, 6 or 7. The first solution includes a source of M and HF and the second solution includes a source of Mn to a reactor in the presence of a source of A.

公开(公告)号：US10563121B2

公开(公告)日：2020-02-18

申请号：US15171098

申请日：2016-06-02

Applicant: GENERAL ELECTRIC COMPANY

Inventor： William Winder Beers ,  Jianmin He ,  Fangming Du ,  James Edward Murphy ,  William Erwin Cohen ,  Clark David Nelson ,  Cynthia Susan Link

IPC: C09K11/61 ,  H01L33/50

Abstract: A method includes obtaining particles of a phosphor precursor of formula Ax[MFy]:Mn4+, reducing sizes of the particles of the phosphor precursor by wet milling the particles and annealing the particles that are wet milled by contacting the particles with a fluorine-containing oxidizing agent. Additionally, a manganese doped complex fluoride phosphor prepared by this method is provided. A lighting apparatus and backlight device that include manganese-doped phosphor prepared by this method also are provided.

公开(公告)号：US09117650B2

公开(公告)日：2015-08-25

申请号：US14315904

申请日：2014-06-26

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Fangming Du ,  Brett R. Bradley ,  William Erwin Cohen ,  Nathaniel Jon Farkas ,  Clark David Nelson

IPC: H01J1/62 ,  H01J63/04 ,  H01J61/44 ,  C09K11/71 ,  C09K11/77 ,  C09K11/76 ,  H01J61/35

CPC classification number: H01J61/44 ,  C09K11/71 ,  C09K11/76 ,  C09K11/7734 ,  H01J61/35

Abstract: A coating system for a fluorescent lamp, and fluorescent lamps provided therewith. The coating system includes a phosphor-containing coating containing a mixture of phosphors that contain less than 10% weight rare earth phosphors. The phosphor-containing coating emits visible light having a color rendering index of at least 87 when excited by UV radiation.

Abstract translation: 一种用于荧光灯的涂层系统，以及提供荧光灯的荧光灯。 该涂层系统包括含有含有少于10重量％稀土荧光体的磷光体混合物的含磷光体涂层。 当通过紫外线辐射激发时，含荧光体的涂层发射具有至少87的显色指数的可见光。

公开(公告)号：US20190048258A1

公开(公告)日：2019-02-14

申请号：US15674495

申请日：2017-08-10

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Fangming Du ,  Clark David Nelson ,  Sara Anne Krosschell

IPC: C09K11/66 ,  C09K11/59 ,  C09K11/67

Abstract: A process for preparing a population of coated phosphor particles is presented. The process includes combining particles of a phosphor of formula I: Ax[MFy]:Mn4+ with a first solution including a compound of formula II: Ax[MFy] to form a suspension, where A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Hf, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is an absolute value of a charge of the [MFy] ion; and y is 5, 6 or 7. The process further includes combining a second solution including a source A+ ions with the suspension.

公开(公告)号：US20170298273A1

公开(公告)日：2017-10-19

申请号：US15411250

申请日：2017-01-20

Applicant: General Electric Company

Inventor： Fangming Du ,  William Winder Beers ,  William Erwin Cohen ,  Clark David Nelson

IPC: C09K11/08

CPC classification number: C09K11/08 ,  C09K11/617

Abstract: A method includes mixing a first fluoride phosphor powder that is doped with tetravalent manganese with a treatment solution for a designated period of time, stopping the mixing to allow the fluoride phosphor powder to settle, removing at least some liquid that has separated from the first fluoride phosphor powder, repeating (a) the mixing, (b) the stopping of the mixing, and (c) removing at least some of the liquid during one or more additional cycles, and obtaining a second fluoride phosphor powder following the repeating of the mixing, the stopping of the mixing, and the removing of at least some of the liquid. The second fluoride phosphor powder includes a reduced amount of the manganese relative to the first fluoride phosphor powder.

公开(公告)号：US20160115382A1

公开(公告)日：2016-04-28

申请号：US14950644

申请日：2015-11-24

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Fangming Du ,  William Winder Beers ,  William Erwin Cohen ,  Clark David Nelson ,  Jenna Marie Novak ,  John Matthew Root ,  James Edward Murphy ,  Srinivas Prasad Sista

IPC: C09K11/61 ,  F21K99/00 ,  F21V9/16

CPC classification number: C09K11/617 ,  H01L33/00 ,  H01L33/502 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2924/181 ,  H01L2924/00014 ,  H01L2924/00012

Abstract: A process for preparing a Mn+4 doped phosphor of formula I Ax[MFy]:Mn+4   I includes gradually adding a first solution to a second solution and periodically discharging the product liquor from the reactor while volume of the product liquor in the reactor remains constant; wherein A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; y is 5, 6 or 7. The first solution includes a source of M and HF and the second solution includes a source of Mn to a reactor in the presence of a source of A.

Abstract translation: 制备式I的掺杂Mn + 4的磷光体的方法Ax [MFy]：Mn + 4I包括逐渐向第二溶液中加入第一溶液并且周期性地从反应器中排出产物液体，同时反应器中产物液体的体积 保持不变; 其中A为Li，Na，K，Rb，Cs或其组合; M是Si，Ge，Sn，Ti，Zr，Al，Ga，In，Sc，Y，La，Nb，Ta，Bi，Gd或它们的组合; x是[MFy]离子的电荷的绝对值; y为5,6或7.第一溶液包括M和HF源，第二溶液在A源的存在下包含Mn的反应器源。