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公开(公告)号：US10910525B2
公开(公告)日：2021-02-02
申请号：US16599931
申请日：2019-10-11
IPC分类号： H01L33/50 , B22F1/00 , B22F9/24 , C09C3/06 , C09K11/62 , B22F1/02 , B01J13/02 , C09K11/64 , C09K11/70 , C01B25/08 , H01L33/00 , C09B67/02 , B82Y20/00 , B82Y40/00
摘要： Quantum dot semiconductor nanoparticle compositions that incorporate ions such as zinc, aluminum, calcium, or magnesium into the quantum dot core have been found to be more stable to Ostwald ripening. A core-shell quantum dot may have a core of a semiconductor material that includes indium, magnesium, and phosphorus ions. Ions such as zinc, calcium, and/or aluminum may be included in addition to, or in place of, magnesium. The core may further include other ions, such as selenium, and/or sulfur. The core may be coated with one (or more) shells of semiconductor material. Example shell semiconductor materials include semiconductors containing zinc, sulfur, selenium, iron and/or oxygen ions.
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公开(公告)号：US10483440B2
公开(公告)日：2019-11-19
申请号：US15725768
申请日：2017-10-05
IPC分类号： H01L33/50 , C01B25/08 , H01L33/00 , B22F1/00 , B22F9/24 , C09C3/06 , C09K11/62 , B22F1/02 , B01J13/02 , C09K11/64 , C09K11/70 , C09B67/02 , B82Y20/00 , B82Y40/00
摘要： Quantum dot semiconductor nanoparticle compositions that incorporate ions such as zinc, aluminum, calcium, or magnesium into the quantum dot core have been found to be more stable to Ostwald ripening. A core-shell quantum dot may have a core of a semiconductor material that includes indium, magnesium, and phosphorus ions. Ions such as zinc, calcium, and/or aluminum may be included in addition to, or in place of, magnesium. The core may further include other ions, such as selenium, and/or sulfur. The core may be coated with one (or more) shells of semiconductor material. Example shell semiconductor materials include semiconductors containing zinc, sulfur, selenium, iron and/or oxygen ions.
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公开(公告)号：US20190198730A1
公开(公告)日：2019-06-27
申请号：US16290450
申请日：2019-03-01
IPC分类号： H01L33/50 , F21V8/00 , G02F1/1335 , C09K11/70 , H01L33/48 , C09K11/02 , H01L33/56 , C09K11/61
CPC分类号： H01L33/507 , C09K11/02 , C09K11/617 , C09K11/70 , G02B6/005 , G02B6/0073 , G02F1/133621 , G02F2001/133614 , H01L33/486 , H01L33/504 , H01L33/56 , H01L2933/0041 , H05B33/14 , Y02B20/181
摘要： LED devices emitting white light comprise a blue-emitting LED, green-emitting quantum dots (QDs) and red-emitting K2SiF6:Mn4+ (KSF) phosphor. A backlight unit (BLU) for a liquid crystal display (LCD) comprises one or more blue-emitting LEDs and a polymer film containing green-emitting QDs and KSF phosphor. The QDs and/or KSF phosphor may be encapsulated in beads that provide protection from oxygen and/or moisture.
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公开(公告)号：US10312418B2
公开(公告)日：2019-06-04
申请号：US15424556
申请日：2017-02-03
发明人： Imad Naasani , James Harris , Nigel Pickett
摘要： A light emitting layer including a plurality of light emitting particles embedded within a host matrix material. Each of said light emitting particles includes a population of semiconductor nanoparticles embedded within a polymeric encapsulation medium. A method of fabricating a light emitting layer comprising a plurality of light emitting particles embedded within a host matrix material, each of said light emitting particles comprising a population of semiconductor nanoparticles embedded within a polymeric encapsulation medium. The method comprises providing a dispersion containing said light emitting particles, depositing said dispersion to form a film, and processing said film to produce said light emitting layer.
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5.发明授权公开(公告)号：US10014452B2
公开(公告)日：2018-07-03
申请号：US15241328
申请日：2016-08-19
发明人： Nigel Pickett , James Harris
IPC分类号： H01L33/56 , B82Y15/00 , C09K11/02 , C09K11/56 , C09K11/70 , C09K11/88 , G01N33/58 , H01L33/00 , H01L33/04 , H01L33/50
CPC分类号： H01L33/56 , B82Y15/00 , C09K11/02 , C09K11/565 , C09K11/70 , C09K11/883 , G01N33/588 , H01L33/005 , H01L33/04 , H01L33/501 , H01L33/502 , H01L2224/48091 , H01L2924/181 , H01L2933/0041 , H01L2933/005 , H01L2924/00012 , H01L2924/00014
摘要： Embodiments of the present invention relate to a formulation for use in the fabrication of a light-emitting device, the formulation including a population of semiconductor nanoparticles incorporated into a plurality of discrete microbeads comprising an optically transparent medium, the nanoparticle-containing medium being embedded in a host light-emitting diode encapsulation medium. A method of preparing such a formulation is described. There is further provided a light-emitting device including a primary light source in optical communication with such a formulation and a method of fabricating the same.
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公开(公告)号：US10014447B2
公开(公告)日：2018-07-03
申请号：US15400524
申请日：2017-01-06
发明人： Nigel Pickett , Imad Naasani , James Harris
CPC分类号： H01L33/502 , C09K11/025 , C09K11/565 , C09K11/70 , C09K11/883 , H01L33/005 , H01L33/504 , H01L33/56 , H01L2224/48091 , H01L2933/0041 , H01L2924/00014
摘要： The present invention relates to a primary particle comprised of a primary matrix material containing a population of semiconductor nanoparticles, wherein each primary particle further comprises an additive to enhance the physical, chemical and/or photo-stability of the semiconductor nanoparticles. A method of preparing such particles is described. Composite materials and light emitting devices incorporating such primary particles are also described.
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公开(公告)号：US09853190B2
公开(公告)日：2017-12-26
申请号：US14579237
申请日：2014-12-22
IPC分类号： H01L21/20 , H01L33/50 , C01B25/08 , H01L33/00 , B22F1/00 , B22F9/24 , C09C3/06 , C09K11/62 , B22F1/02 , B01J13/02 , C09K11/64 , C09K11/70 , C09B67/02 , B82Y20/00 , B82Y40/00
CPC分类号： H01L33/502 , B01J13/02 , B22F1/0018 , B22F1/02 , B22F9/24 , B82Y20/00 , B82Y40/00 , C01B25/088 , C01P2002/84 , C01P2004/64 , C01P2006/40 , C01P2006/60 , C09B67/0097 , C09C3/063 , C09K11/62 , C09K11/623 , C09K11/64 , C09K11/70 , H01L33/005 , H01L2933/0041 , Y10S977/774 , Y10S977/892
摘要： Quantum dot semiconductor nanoparticle compositions that incorporate ions such as zinc, aluminum, calcium, or magnesium into the quantum dot core have been found to be more stable to Ostwald ripening. A core-shell quantum dot may have a core of a semiconductor material that includes indium, magnesium, and phosphorus ions. Ions such as zinc, calcium, and/or aluminum may be included in addition to, or in place of, magnesium. The core may further include other ions, such as selenium, and/or sulfur. The core may be coated with one (or more) shells of semiconductor material. Example shell semiconductor materials include semiconductors containing zinc, sulfur, selenium, iron and/or oxygen ions.
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公开(公告)号：US20170125650A1
公开(公告)日：2017-05-04
申请号：US15337557
申请日：2016-10-28
IPC分类号： H01L33/50 , G02F1/1335 , F21V8/00 , H01L33/48 , H01L33/56
摘要： LED devices emitting white light comprise a blue-emitting LED, green-emitting quantum dots (QDs) and red-emitting K2SiF6:Mn4+ (KSF) phosphor. A backlight unit (BLU) for a liquid crystal display (LCD) comprises one or more blue-emitting LEDs and a polymer film containing green-emitting QDs and KSF phosphor. The QDs and/or KSF phosphor may be encapsulated in beads that provide protection from oxygen and/or moisture.
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公开(公告)号：US09478700B2
公开(公告)日：2016-10-25
申请号：US14209603
申请日：2014-03-13
CPC分类号： C09K11/703 , B01J2/003 , C09K11/02 , H01L33/06
摘要： A scalable method for the manufacture of narrow, bright, monodisperse, photo-luminescent quantum dots prepared in the presence of a Group II-VI molecular seeding cluster fabricated in situ from a zinc salt and a thiol or selenol compound. Exemplary quantum dots have a core containing indium, phosphorus, zinc and either sulfur or selenium.
摘要翻译： 用于制造在由锌盐和硫醇或硒酚化合物原位制备的II-VI族分子晶种簇存在下制备的窄，明亮，单分散的光致发光量子点的可扩展方法。 示例性的量子点具有含有铟，磷，锌以及硫或硒的核。
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公开(公告)号：US20160268486A1
公开(公告)日：2016-09-15
申请号：US15159538
申请日：2016-05-19
发明人： James Harris
CPC分类号： H01L33/504 , B82Y20/00 , C09K11/54 , C09K11/565 , C09K11/70 , H01L33/483 , H01L33/502 , H01L33/505 , H01L33/507 , H01L33/56 , H01L33/58 , H01L2224/48091 , H01L2933/0041 , H01L2933/0083 , Y10S977/774 , Y10S977/825 , Y10S977/95 , H01L2924/00014
摘要： An LED device has a cap containing one or more quantum dot (QD) phosphors. The cap may be sized and configured to be integrated with standard LED packages. The QD phosphor may be held within the well of the LED package, so as to absorb the maximum amount of light emitted by the LED, but arranged in spaced-apart relation from the LED chip to avoid excessive heat that can lead to degradation of the QD phosphor(s). The packages may be manufactured and stored for subsequent assembly onto an LED device.
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