ATE517966T1 - Lichtemittierende vorrichtung mit leuchtstoffkonversion - Google Patents

Lichtemittierende vorrichtung mit leuchtstoffkonversion

Info

Publication number
ATE517966T1
ATE517966T1 AT05111855T AT05111855T ATE517966T1 AT E517966 T1 ATE517966 T1 AT E517966T1 AT 05111855 T AT05111855 T AT 05111855T AT 05111855 T AT05111855 T AT 05111855T AT E517966 T1 ATE517966 T1 AT E517966T1
Authority
AT
Austria
Prior art keywords
emitting device
light emitting
fluorescent conversion
light
converting material
Prior art date
Application number
AT05111855T
Other languages
English (en)
Inventor
Gerd Mueller
Regina Mueller-Mach
Joerg Meyer
Peter Schmidt
Detlef Wiechert
Original Assignee
Philips Lumileds Lighting Co
Koninkl Philips Electronics Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Lumileds Lighting Co, Koninkl Philips Electronics Nv filed Critical Philips Lumileds Lighting Co
Application granted granted Critical
Publication of ATE517966T1 publication Critical patent/ATE517966T1/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
    • C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
    • C09K11/77—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/77347—Silicon Nitrides or Silicon Oxynitrides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
    • C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
    • C09K11/0883—Arsenides; Nitrides; Phosphides
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
    • H10H20/8512—Wavelength conversion materials
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
    • H10H20/8512—Wavelength conversion materials
    • H10H20/8513—Wavelength conversion materials having two or more wavelength conversion materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)
  • Led Device Packages (AREA)
AT05111855T 2004-12-10 2005-12-08 Lichtemittierende vorrichtung mit leuchtstoffkonversion ATE517966T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/008,863 US7671529B2 (en) 2004-12-10 2004-12-10 Phosphor converted light emitting device

Publications (1)

Publication Number Publication Date
ATE517966T1 true ATE517966T1 (de) 2011-08-15

Family

ID=35998433

Family Applications (1)

Application Number Title Priority Date Filing Date
AT05111855T ATE517966T1 (de) 2004-12-10 2005-12-08 Lichtemittierende vorrichtung mit leuchtstoffkonversion

Country Status (5)

Country Link
US (1) US7671529B2 (de)
EP (1) EP1669429B1 (de)
JP (3) JP5106773B2 (de)
AT (1) ATE517966T1 (de)
TW (1) TWI414075B (de)

Families Citing this family (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7915085B2 (en) 2003-09-18 2011-03-29 Cree, Inc. Molded chip fabrication method
EP2113549B1 (de) * 2004-04-27 2011-12-28 Panasonic Corporation Phosphorzusammensetzung und lichtemittierende Vorrichtung damit
JP4674348B2 (ja) * 2004-09-22 2011-04-20 独立行政法人物質・材料研究機構 蛍光体とその製造方法および発光器具
US7671529B2 (en) * 2004-12-10 2010-03-02 Philips Lumileds Lighting Company, Llc Phosphor converted light emitting device
JP2006213910A (ja) * 2005-01-06 2006-08-17 Matsushita Electric Ind Co Ltd 酸窒化物蛍光体及び発光装置
US20070114562A1 (en) * 2005-11-22 2007-05-24 Gelcore, Llc Red and yellow phosphor-converted LEDs for signal applications
JP4975269B2 (ja) * 2005-04-28 2012-07-11 Ｄｏｗａホールディングス株式会社 蛍光体およびその製造方法、並びに当該蛍光体を用いた発光装置
US7358543B2 (en) * 2005-05-27 2008-04-15 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Light emitting device having a layer of photonic crystals and a region of diffusing material and method for fabricating the device
US7847302B2 (en) * 2005-08-26 2010-12-07 Koninklijke Philips Electronics, N.V. Blue LED with phosphor layer for producing white light and different phosphor in outer lens for reducing color temperature
KR101171186B1 (ko) * 2005-11-10 2012-08-06 삼성전자주식회사 고휘도 발광 다이오드 및 이를 이용한 액정 표시 장치
US7564070B2 (en) * 2005-11-23 2009-07-21 Visteon Global Technologies, Inc. Light emitting diode device having a shield and/or filter
US20080029720A1 (en) * 2006-08-03 2008-02-07 Intematix Corporation LED lighting arrangement including light emitting phosphor
JP2008038050A (ja) * 2006-08-08 2008-02-21 Sumitomo Chemical Co Ltd 蛍光体
JP5590092B2 (ja) * 2006-09-15 2014-09-17 三菱化学株式会社 蛍光体、蛍光体含有組成物、発光装置、並びに画像表示装置及び照明装置
DE102007020782A1 (de) * 2006-09-27 2008-04-03 Osram Opto Semiconductors Gmbh Strahlungsemittierende Vorrichtung
US9159888B2 (en) * 2007-01-22 2015-10-13 Cree, Inc. Wafer level phosphor coating method and devices fabricated utilizing method
US9024349B2 (en) * 2007-01-22 2015-05-05 Cree, Inc. Wafer level phosphor coating method and devices fabricated utilizing method
EP2109651B1 (de) * 2007-02-07 2011-09-28 Philips Intellectual Property & Standards GmbH Beleuchtungssystem mit einem monolithischen keramischen verbundlumineszenzumwandler
DE102007010719A1 (de) * 2007-03-06 2008-09-11 Merck Patent Gmbh Leuchtstoffe bestehend aus dotierten Granaten für pcLEDs
CN101157854B (zh) * 2007-07-02 2010-10-13 北京宇极科技发展有限公司 一种氮氧化合物发光材料、其制备方法及其应用
US8163202B2 (en) * 2007-08-21 2012-04-24 Samsung Electro-Mechanics Co., Ltd. (Oxy) nitride phosphor, white light-emitting device including the (oxy) nitride phosphor, method of preparing phosphor, and nitride phosphor prepared by the method
KR20090019677A (ko) * 2007-08-21 2009-02-25 삼성전기주식회사 옥시 나이트라이드 형광체, 이를 포함하는 백색 발광 소자및 형광체 제조 방법.
JP2010538102A (ja) * 2007-09-04 2010-12-09 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 複合材料ＳｉＡｌＯＮをベースにしたセラミック材料を有する発光装置
US8680547B2 (en) * 2007-10-15 2014-03-25 Koninklijke Philips Electronics N.V. Light emitting device comprising a multiphase ceramic material
US9041285B2 (en) 2007-12-14 2015-05-26 Cree, Inc. Phosphor distribution in LED lamps using centrifugal force
US8878219B2 (en) 2008-01-11 2014-11-04 Cree, Inc. Flip-chip phosphor coating method and devices fabricated utilizing method
US8274215B2 (en) 2008-12-15 2012-09-25 Intematix Corporation Nitride-based, red-emitting phosphors
WO2009141960A1 (en) * 2008-05-20 2009-11-26 Panasonic Corporation Semiconductor light-emitting device as well as light source device and lighting system including the same
JP2009287027A (ja) * 2008-05-30 2009-12-10 Samsung Electro Mech Co Ltd （オキシ）ナイトライド蛍光体、それを含む白色発光素子及び蛍光体の製造方法
JP2009287024A (ja) * 2008-05-30 2009-12-10 Samsung Electro Mech Co Ltd （オキシ）ナイトライド蛍光体、それを含む白色発光素子及び蛍光体の製造方法
KR100963743B1 (ko) * 2009-06-23 2010-06-14 한국광기술원 파장변환물질층을 구비하는 발광 다이오드 및 이의 제조방법
DE102009037732A1 (de) 2009-08-17 2011-02-24 Osram Gesellschaft mit beschränkter Haftung Konversions-LED mit hoher Effizienz
DE102009037730A1 (de) 2009-08-17 2011-02-24 Osram Gesellschaft mit beschränkter Haftung Konversions-LED mit hoher Farbwiedergabe
CN102725378B (zh) * 2010-01-29 2016-01-13 默克专利有限公司 发光物质
DE102010021341A1 (de) * 2010-05-22 2011-11-24 Merck Patent Gmbh Leuchtstoffe
WO2012007885A1 (en) * 2010-07-13 2012-01-19 Koninklijke Philips Electronics N.V. Uv-a or uv-b-emitting discharge lamp
US20120019126A1 (en) * 2010-07-22 2012-01-26 General Electric Company Oxynitride phosphors, method of preparation, and light emitting instrument
US9133392B2 (en) 2010-07-22 2015-09-15 Osram Opto Semiconductors Gmbh Garnet material, method for its manufacturing and radiation-emitting component comprising the garnet material
US10546846B2 (en) * 2010-07-23 2020-01-28 Cree, Inc. Light transmission control for masking appearance of solid state light sources
US8534901B2 (en) 2010-09-13 2013-09-17 Teledyne Reynolds, Inc. Collimating waveguide apparatus and method
US9546765B2 (en) 2010-10-05 2017-01-17 Intematix Corporation Diffuser component having scattering particles
US8604678B2 (en) 2010-10-05 2013-12-10 Intematix Corporation Wavelength conversion component with a diffusing layer
US8610341B2 (en) 2010-10-05 2013-12-17 Intematix Corporation Wavelength conversion component
US8614539B2 (en) 2010-10-05 2013-12-24 Intematix Corporation Wavelength conversion component with scattering particles
US8957585B2 (en) 2010-10-05 2015-02-17 Intermatix Corporation Solid-state light emitting devices with photoluminescence wavelength conversion
JP6069205B2 (ja) 2010-10-05 2017-02-01 インテマティックス・コーポレーションＩｎｔｅｍａｔｉｘ Ｃｏｒｐｏｒａｔｉｏｎ フォトルミネッセンス波長変換を備える発光装置及び波長変換コンポーネント
US9257607B2 (en) * 2010-12-01 2016-02-09 Koninklijke Philips N.V. Red emitting luminescent materials
US9166126B2 (en) 2011-01-31 2015-10-20 Cree, Inc. Conformally coated light emitting devices and methods for providing the same
US8608328B2 (en) 2011-05-06 2013-12-17 Teledyne Technologies Incorporated Light source with secondary emitter conversion element
WO2012163417A1 (de) 2011-05-31 2012-12-06 Osram Ag Optoelektronisches halbleiterbauelement
CN103045257B (zh) * 2011-10-17 2015-09-23 有研稀土新材料股份有限公司 一种氮化物发光材料及采用该发光材料制成的发光器件
CN102495495B (zh) 2011-10-28 2015-03-11 友达光电股份有限公司 具可透视性的显示装置及其使用的影像显示方法
CN102399552B (zh) * 2011-11-08 2014-07-30 杭州广陵科技开发有限公司 一种用于白光led的氮化物红色荧光粉及其制备方法
US8663502B2 (en) 2011-12-30 2014-03-04 Intematix Corporation Red-emitting nitride-based phosphors
WO2013102222A1 (en) 2011-12-30 2013-07-04 Intematix Corporation Nitride phosphors with interstitial cations for charge balance
KR20150034782A (ko) * 2012-07-13 2015-04-03 메르크 파텐트 게엠베하 인광체의 제조 방법
US8597545B1 (en) 2012-07-18 2013-12-03 Intematix Corporation Red-emitting nitride-based calcium-stabilized phosphors
TWI582214B (zh) * 2012-07-25 2017-05-11 國立研究開發法人物質 材料研究機構 螢光體及其製造方法、使用螢光體之發光裝置、圖像顯示裝置、顏料及紫外線吸收劑
CN103881706B (zh) * 2012-12-21 2016-01-20 有研稀土新材料股份有限公司 一种氮氧化物荧光粉、其制备方法及含该荧光粉的发光装置
WO2014094975A1 (de) * 2012-12-21 2014-06-26 Merck Patent Gmbh Leuchtstoffe
TWI494413B (zh) 2012-12-22 2015-08-01 奇美實業股份有限公司 螢光體與發光裝置
US20140185269A1 (en) 2012-12-28 2014-07-03 Intermatix Corporation Solid-state lamps utilizing photoluminescence wavelength conversion components
CN105121951A (zh) 2013-03-15 2015-12-02 英特曼帝克司公司 光致发光波长转换组件
TWI464238B (zh) * 2013-03-27 2014-12-11 奇美實業股份有限公司 螢光體與發光裝置
JP6083881B2 (ja) * 2013-05-14 2017-02-22 国立研究開発法人物質・材料研究機構 蛍光体、その製造方法、発光装置、画像表示装置、顔料および紫外線吸収剤
DE102013105056A1 (de) 2013-05-16 2014-11-20 Osram Opto Semiconductors Gmbh Verfahren zur Herstellung eines Leuchtstoffs, Leuchtstoff und optoelektronisches Bauelement
JP6608359B2 (ja) * 2013-07-19 2019-11-20 ルミレッズ ホールディング ベーフェー 基板キャリアを有さず光学素子を有するｐｃｌｅｄ
JP6240962B2 (ja) * 2013-09-25 2017-12-06 国立研究開発法人物質・材料研究機構 蛍光体及びその製造方法並びにこれを用いた発光装置
KR102357584B1 (ko) * 2014-12-17 2022-02-04 삼성전자주식회사 질화물 형광체, 백색 발광장치, 디스플레이 장치 및 조명장치
KR102544954B1 (ko) * 2014-12-24 2023-06-20 루미리즈 홀딩 비.브이. 인광체 변환 led
CN104726095B (zh) * 2015-02-03 2017-04-12 五邑大学 一种常压低能耗制备氮化物红色荧光粉的方法
WO2018021201A1 (ja) * 2016-07-26 2018-02-01 デクセリアルズ株式会社 赤色蛍光体及びその製造方法、並びにそれを用いた白色光源、照明装置及び表示装置
JP2018021167A (ja) * 2016-07-26 2018-02-08 デクセリアルズ株式会社 赤色蛍光体及びその製造方法、並びにそれを用いた白色光源、照明装置及び表示装置
WO2018054753A1 (en) * 2016-09-26 2018-03-29 Lumileds Holding B.V. Wavelength converting material for a light emitting device
JP6439844B2 (ja) * 2016-09-29 2018-12-19 日亜化学工業株式会社 窒化物蛍光体の製造方法
WO2018163830A1 (ja) * 2017-03-08 2018-09-13 パナソニックＩｐマネジメント株式会社 光源装置
US11692135B2 (en) 2021-06-11 2023-07-04 Nichia Corporation Nitride phosphor, method for manufacturing the same, and light emitting device

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5847507A (en) * 1997-07-14 1998-12-08 Hewlett-Packard Company Fluorescent dye added to epoxy of light emitting diode lens
US5959316A (en) * 1998-09-01 1999-09-28 Hewlett-Packard Company Multiple encapsulation of phosphor-LED devices
US6273589B1 (en) * 1999-01-29 2001-08-14 Agilent Technologies, Inc. Solid state illumination source utilizing dichroic reflectors
US6351069B1 (en) * 1999-02-18 2002-02-26 Lumileds Lighting, U.S., Llc Red-deficiency-compensating phosphor LED
US6680569B2 (en) * 1999-02-18 2004-01-20 Lumileds Lighting U.S. Llc Red-deficiency compensating phosphor light emitting device
US6696703B2 (en) * 1999-09-27 2004-02-24 Lumileds Lighting U.S., Llc Thin film phosphor-converted light emitting diode device
US6630691B1 (en) * 1999-09-27 2003-10-07 Lumileds Lighting U.S., Llc Light emitting diode device comprising a luminescent substrate that performs phosphor conversion
WO2001024284A1 (en) * 1999-09-27 2001-04-05 Lumileds Lighting, U.S., Llc A light emitting diode device that produces white light by performing complete phosphor conversion
US6686691B1 (en) * 1999-09-27 2004-02-03 Lumileds Lighting, U.S., Llc Tri-color, white light LED lamps
EP1104799A1 (de) * 1999-11-30 2001-06-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Rotstrahlendes lumineszentes Material
US6603258B1 (en) * 2000-04-24 2003-08-05 Lumileds Lighting, U.S. Llc Light emitting diode device that emits white light
JP2001322867A (ja) * 2000-05-09 2001-11-20 Matsushita Electric Ind Co Ltd 透光性焼結体と、これを用いた発光管及び放電灯
US6417019B1 (en) * 2001-04-04 2002-07-09 Lumileds Lighting, U.S., Llc Phosphor converted light emitting diode
JP4009828B2 (ja) * 2002-03-22 2007-11-21 日亜化学工業株式会社 窒化物蛍光体及びその製造方法
KR100983193B1 (ko) 2002-03-22 2010-09-20 니치아 카가쿠 고교 가부시키가이샤 질화물 형광체와 그 제조 방법 및 발광 장치
JP2003321675A (ja) * 2002-04-26 2003-11-14 Nichia Chem Ind Ltd 窒化物蛍光体及びその製造方法
WO2003080763A1 (en) * 2002-03-25 2003-10-02 Philips Intellectual Property & Standards Gmbh Tri-color white light led lamp
US7061024B2 (en) * 2002-10-14 2006-06-13 Koninklijke Philips Electronics N.V. Light-emitting device comprising an EU(II)-activated phosphor
US6717353B1 (en) * 2002-10-14 2004-04-06 Lumileds Lighting U.S., Llc Phosphor converted light emitting device
ATE454718T1 (de) 2002-11-08 2010-01-15 Nichia Corp Lichtemissionsbauelement, leuchtstoff und verfahren zur herstellung eines leuchtstoffs
JP4207537B2 (ja) * 2002-11-08 2009-01-14 日亜化学工業株式会社 蛍光体および発光装置
JP4418758B2 (ja) * 2002-12-13 2010-02-24 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 放射源と発光体を有する照射システム
US7038370B2 (en) * 2003-03-17 2006-05-02 Lumileds Lighting, U.S., Llc Phosphor converted light emitting device
EP1566426B1 (de) * 2004-02-23 2015-12-02 Philips Lumileds Lighting Company LLC Lichtemittierende vorrichtung, enthaltend einen wellenlängenkonvertierenden leuchtstoff
JP4045298B2 (ja) * 2004-03-22 2008-02-13 株式会社フジクラ 発光デバイス及び照明装置
US6956247B1 (en) * 2004-05-26 2005-10-18 Lumileds Lighting U.S., Llc Semiconductor light emitting device including photonic band gap material and luminescent material
US7700002B2 (en) * 2004-05-27 2010-04-20 Koninklijke Philips Electronics N.V. Illumination system comprising a radiation source and fluorescent material
US7671529B2 (en) * 2004-12-10 2010-03-02 Philips Lumileds Lighting Company, Llc Phosphor converted light emitting device

Also Published As

Publication number Publication date
JP5838130B2 (ja) 2015-12-24
US20060124947A1 (en) 2006-06-15
TWI414075B (zh) 2013-11-01
JP5566423B2 (ja) 2014-08-06
JP5106773B2 (ja) 2012-12-26
TW200633270A (en) 2006-09-16
EP1669429A2 (de) 2006-06-14
JP2012224857A (ja) 2012-11-15
JP2006169526A (ja) 2006-06-29
US7671529B2 (en) 2010-03-02
EP1669429A3 (de) 2009-09-09
JP2012184440A (ja) 2012-09-27
EP1669429B1 (de) 2011-07-27

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