JP2002533938A5 - - Google Patents

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Publication number
JP2002533938A5
JP2002533938A5 JP2000590229A JP2000590229A JP2002533938A5 JP 2002533938 A5 JP2002533938 A5 JP 2002533938A5 JP 2000590229 A JP2000590229 A JP 2000590229A JP 2000590229 A JP2000590229 A JP 2000590229A JP 2002533938 A5 JP2002533938 A5 JP 2002533938A5
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JP
Japan
Prior art keywords
emitting device
radiation source
contact
light emitting
radiation
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Pending
Application number
JP2000590229A
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English (en)
Japanese (ja)
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JP2002533938A (ja
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Publication date
Priority claimed from US09/218,816 external-priority patent/US6373188B1/en
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Publication of JP2002533938A publication Critical patent/JP2002533938A/ja
Publication of JP2002533938A5 publication Critical patent/JP2002533938A5/ja
Pending legal-status Critical Current

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JP2000590229A 1998-12-22 1999-11-30 励起蛍光体を有する可視光出力発生用の高効率固体発光装置 Pending JP2002533938A (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/218,816 1998-12-22
US09/218,816 US6373188B1 (en) 1998-12-22 1998-12-22 Efficient solid-state light emitting device with excited phosphors for producing a visible light output
PCT/US1999/028326 WO2000038250A1 (en) 1998-12-22 1999-11-30 Efficient solid-state light emitting device with excited phosphors for producing a visible light output

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2014032122A Division JP2014090220A (ja) 1998-12-22 2014-02-21 励起蛍光体を有する可視光出力発生用の高効率固体発光装置

Publications (2)

Publication Number Publication Date
JP2002533938A JP2002533938A (ja) 2002-10-08
JP2002533938A5 true JP2002533938A5 (https=) 2017-08-31

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
JP2000590229A Pending JP2002533938A (ja) 1998-12-22 1999-11-30 励起蛍光体を有する可視光出力発生用の高効率固体発光装置
JP2014032122A Pending JP2014090220A (ja) 1998-12-22 2014-02-21 励起蛍光体を有する可視光出力発生用の高効率固体発光装置

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2014032122A Pending JP2014090220A (ja) 1998-12-22 2014-02-21 励起蛍光体を有する可視光出力発生用の高効率固体発光装置

Country Status (5)

Country Link
US (1) US6373188B1 (https=)
EP (1) EP1145332A1 (https=)
JP (2) JP2002533938A (https=)
CA (1) CA2356530A1 (https=)
WO (1) WO2000038250A1 (https=)

Families Citing this family (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6329676B1 (en) * 1999-03-01 2001-12-11 Toru Takayama Flat panel solid state light source
US6696703B2 (en) 1999-09-27 2004-02-24 Lumileds Lighting U.S., Llc Thin film phosphor-converted light emitting diode device
TW480744B (en) * 2000-03-14 2002-03-21 Lumileds Lighting Bv Light-emitting diode, lighting device and method of manufacturing same
JP2001267555A (ja) 2000-03-22 2001-09-28 Matsushita Electric Ind Co Ltd 半導体装置及びその製造方法
WO2002001649A1 (en) 2000-06-29 2002-01-03 Koninklijke Philips Electronics N.V. Optoelectric element
US6650044B1 (en) 2000-10-13 2003-11-18 Lumileds Lighting U.S., Llc Stenciling phosphor layers on light emitting diodes
TW474033B (en) * 2000-11-03 2002-01-21 United Epitaxy Co Ltd LED structure and the manufacturing method thereof
JP2002170989A (ja) * 2000-12-04 2002-06-14 Sharp Corp 窒化物系化合物半導体発光素子
DE10112542B9 (de) * 2001-03-15 2013-01-03 Osram Opto Semiconductors Gmbh Strahlungsemittierendes optisches Bauelement
US6522063B2 (en) * 2001-03-28 2003-02-18 Epitech Corporation Light emitting diode
KR100413435B1 (ko) * 2001-04-02 2003-12-31 엘지전자 주식회사 발광다이오드 및 그 제조방법
US6642652B2 (en) 2001-06-11 2003-11-04 Lumileds Lighting U.S., Llc Phosphor-converted light emitting device
US6576488B2 (en) * 2001-06-11 2003-06-10 Lumileds Lighting U.S., Llc Using electrophoresis to produce a conformally coated phosphor-converted light emitting semiconductor
JPWO2003058726A1 (ja) * 2001-12-28 2005-05-19 サンケン電気株式会社 半導体発光素子、発光表示体、半導体発光素子の製造方法及び発光表示体の製造方法
US6888170B2 (en) * 2002-03-15 2005-05-03 Cornell Research Foundation, Inc. Highly doped III-nitride semiconductors
US6953740B2 (en) * 2002-03-15 2005-10-11 Cornell Research Foundation, Inc. Highly doped III-nitride semiconductors
ATE535009T1 (de) * 2002-05-08 2011-12-15 Phoseon Technology Inc Hocheffiziente halbleiter-lichtquelle sowie verfahren zu deren verwendung und herstellung
JP3707688B2 (ja) * 2002-05-31 2005-10-19 スタンレー電気株式会社 発光装置およびその製造方法
US20040140474A1 (en) * 2002-06-25 2004-07-22 Matsushita Electric Industrial Co., Ltd. Semiconductor light-emitting device, method for fabricating the same and method for bonding the same
EP1528842A4 (en) * 2002-08-08 2009-10-28 Panasonic Corp LIGHT EMITTING ELEMENT, MANUFACTURING METHOD AND DISPLAY DEVICE
US10340424B2 (en) 2002-08-30 2019-07-02 GE Lighting Solutions, LLC Light emitting diode component
KR101182041B1 (ko) * 2002-09-19 2012-09-11 크리 인코포레이티드 경사 측벽을 포함하고 인광물질이 코팅된 발광 다이오드,및 그의 제조방법
KR20050103200A (ko) * 2003-01-27 2005-10-27 쓰리엠 이노베이티브 프로퍼티즈 컴파니 인광계 광원 요소와 제조 방법
US7312560B2 (en) * 2003-01-27 2007-12-25 3M Innovative Properties Phosphor based light sources having a non-planar long pass reflector and method of making
US7245072B2 (en) * 2003-01-27 2007-07-17 3M Innovative Properties Company Phosphor based light sources having a polymeric long pass reflector
US7091653B2 (en) 2003-01-27 2006-08-15 3M Innovative Properties Company Phosphor based light sources having a non-planar long pass reflector
US7210977B2 (en) 2003-01-27 2007-05-01 3M Innovative Properties Comapny Phosphor based light source component and method of making
US20040159900A1 (en) * 2003-01-27 2004-08-19 3M Innovative Properties Company Phosphor based light sources having front illumination
US20040145312A1 (en) * 2003-01-27 2004-07-29 3M Innovative Properties Company Phosphor based light source having a flexible short pass reflector
US7118438B2 (en) * 2003-01-27 2006-10-10 3M Innovative Properties Company Methods of making phosphor based light sources having an interference reflector
US7091661B2 (en) * 2003-01-27 2006-08-15 3M Innovative Properties Company Phosphor based light sources having a reflective polarizer
US7125501B2 (en) * 2003-04-21 2006-10-24 Sarnoff Corporation High efficiency alkaline earth metal thiogallate-based phosphors
US7368179B2 (en) * 2003-04-21 2008-05-06 Sarnoff Corporation Methods and devices using high efficiency alkaline earth metal thiogallate-based phosphors
US7005679B2 (en) * 2003-05-01 2006-02-28 Cree, Inc. Multiple component solid state white light
US6869812B1 (en) 2003-05-13 2005-03-22 Heng Liu High power AllnGaN based multi-chip light emitting diode
US20050104072A1 (en) 2003-08-14 2005-05-19 Slater David B.Jr. Localized annealing of metal-silicon carbide ohmic contacts and devices so formed
US7675075B2 (en) * 2003-08-28 2010-03-09 Panasonic Corporation Semiconductor light emitting device, light emitting module, lighting apparatus, display element and manufacturing method of semiconductor light emitting device
US7029935B2 (en) 2003-09-09 2006-04-18 Cree, Inc. Transmissive optical elements including transparent plastic shell having a phosphor dispersed therein, and methods of fabricating same
US7183587B2 (en) * 2003-09-09 2007-02-27 Cree, Inc. Solid metal block mounting substrates for semiconductor light emitting devices
DE10353679A1 (de) * 2003-11-17 2005-06-02 Siemens Ag Kostengünstige, miniaturisierte Aufbau- und Verbindungstechnik für LEDs und andere optoelektronische Module
WO2005062389A2 (en) * 2003-12-24 2005-07-07 Matsushita Electric Industrial Co., Ltd. Semiconductor light emitting device, lighting module, lighting apparatus, display element, and manufacturing method for semiconductor light emitting device
DE102004015700A1 (de) * 2004-03-29 2005-11-03 Platsch Gmbh & Co.Kg Flächige UV-Lichtquelle
WO2005120135A1 (en) * 2004-06-04 2005-12-15 Philips Intellectual Property & Standards Gmbh Electroluminescent structure and led with an el structure
EP1780592A4 (en) * 2004-06-30 2014-07-09 Mitsubishi Chem Corp LIGHT-EMITTING COMPONENT, BACKLIGHT UNIT, DISPLAY UNIT AND DISPLAY UNIT
US7427366B2 (en) * 2004-07-06 2008-09-23 Sarnoff Corporation Efficient, green-emitting phosphors, and combinations with red-emitting phosphors
CN100521266C (zh) * 2004-08-06 2009-07-29 皇家飞利浦电子股份有限公司 Led灯系统
US20060097385A1 (en) * 2004-10-25 2006-05-11 Negley Gerald H Solid metal block semiconductor light emitting device mounting substrates and packages including cavities and heat sinks, and methods of packaging same
DE102004053116A1 (de) * 2004-11-03 2006-05-04 Tridonic Optoelectronics Gmbh Leuchtdioden-Anordnung mit Farbkonversions-Material
WO2006049533A2 (en) * 2004-11-05 2006-05-11 Mikhail Evgenjevich Givargizov Radiating devices and method for the production thereof
US7322732B2 (en) 2004-12-23 2008-01-29 Cree, Inc. Light emitting diode arrays for direct backlighting of liquid crystal displays
US7304694B2 (en) * 2005-01-12 2007-12-04 Cree, Inc. Solid colloidal dispersions for backlighting of liquid crystal displays
US7341878B2 (en) * 2005-03-14 2008-03-11 Philips Lumileds Lighting Company, Llc Wavelength-converted semiconductor light emitting device
US8748923B2 (en) * 2005-03-14 2014-06-10 Philips Lumileds Lighting Company Llc Wavelength-converted semiconductor light emitting device
US7276183B2 (en) * 2005-03-25 2007-10-02 Sarnoff Corporation Metal silicate-silica-based polymorphous phosphors and lighting devices
US20060267043A1 (en) * 2005-05-27 2006-11-30 Emerson David T Deep ultraviolet light emitting devices and methods of fabricating deep ultraviolet light emitting devices
US20070125984A1 (en) * 2005-12-01 2007-06-07 Sarnoff Corporation Phosphors protected against moisture and LED lighting devices
US8906262B2 (en) * 2005-12-02 2014-12-09 Lightscape Materials, Inc. Metal silicate halide phosphors and LED lighting devices using the same
KR20090009772A (ko) 2005-12-22 2009-01-23 크리 엘이디 라이팅 솔루션즈, 인크. 조명 장치
US8441179B2 (en) 2006-01-20 2013-05-14 Cree, Inc. Lighting devices having remote lumiphors that are excited by lumiphor-converted semiconductor excitation sources
TWI491062B (zh) * 2006-01-20 2015-07-01 克里公司 空間分離發光膜以偏移固態發光器的光譜內容
US8998444B2 (en) * 2006-04-18 2015-04-07 Cree, Inc. Solid state lighting devices including light mixtures
US7821194B2 (en) * 2006-04-18 2010-10-26 Cree, Inc. Solid state lighting devices including light mixtures
US8033692B2 (en) 2006-05-23 2011-10-11 Cree, Inc. Lighting device
TW200833814A (en) * 2006-10-03 2008-08-16 Sarnoff Corp Metal silicate halide phosphors and LED lighting devices using the same
CN101536197A (zh) * 2006-11-06 2009-09-16 皇家飞利浦电子股份有限公司 具有反射边缘的波长转换元件
EP2087563B1 (en) 2006-11-15 2014-09-24 The Regents of The University of California Textured phosphor conversion layer light emitting diode
WO2008060615A1 (en) * 2006-11-15 2008-05-22 The Regents Of The University Of California Transparent mirrorless light emitting diode
TWI633679B (zh) * 2006-11-15 2018-08-21 美國加利福尼亞大學董事會 豎立式透明無鏡發光二極體
JP2010512662A (ja) 2006-12-11 2010-04-22 ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニア 透明発光ダイオード
US20080198572A1 (en) 2007-02-21 2008-08-21 Medendorp Nicholas W LED lighting systems including luminescent layers on remote reflectors
US7863635B2 (en) * 2007-08-07 2011-01-04 Cree, Inc. Semiconductor light emitting devices with applied wavelength conversion materials
US20090039375A1 (en) * 2007-08-07 2009-02-12 Cree, Inc. Semiconductor light emitting devices with separated wavelength conversion materials and methods of forming the same
KR101525274B1 (ko) * 2007-10-26 2015-06-02 크리, 인코포레이티드 하나 이상의 루미퍼를 갖는 조명 장치, 및 이의 제조 방법
DE102008012407A1 (de) * 2008-01-31 2009-08-06 Osram Opto Semiconductors Gmbh Strahlungsemittierende Vorrichtung
US8350461B2 (en) 2008-03-28 2013-01-08 Cree, Inc. Apparatus and methods for combining light emitters
JP5207812B2 (ja) * 2008-04-25 2013-06-12 京セラ株式会社 発光デバイスおよび発光デバイスの製造方法
KR101639793B1 (ko) * 2008-09-25 2016-07-15 코닌클리케 필립스 엔.브이. 코팅된 발광 장치 및 그 코팅 방법
US8333631B2 (en) * 2009-02-19 2012-12-18 Cree, Inc. Methods for combining light emitting devices in a package and packages including combined light emitting devices
US7967652B2 (en) 2009-02-19 2011-06-28 Cree, Inc. Methods for combining light emitting devices in a package and packages including combined light emitting devices
US8921876B2 (en) * 2009-06-02 2014-12-30 Cree, Inc. Lighting devices with discrete lumiphor-bearing regions within or on a surface of remote elements
BRPI1012906A2 (pt) 2009-06-10 2017-06-27 Rensselaer Polytech Inst bulbo de lâmpada de fonte de luz em estado sólido
KR20120094477A (ko) 2009-09-25 2012-08-24 크리, 인코포레이티드 낮은 눈부심 및 높은 광도 균일성을 갖는 조명 장치
US8593040B2 (en) 2009-10-02 2013-11-26 Ge Lighting Solutions Llc LED lamp with surface area enhancing fins
US9435493B2 (en) 2009-10-27 2016-09-06 Cree, Inc. Hybrid reflector system for lighting device
US8466611B2 (en) 2009-12-14 2013-06-18 Cree, Inc. Lighting device with shaped remote phosphor
US9275979B2 (en) 2010-03-03 2016-03-01 Cree, Inc. Enhanced color rendering index emitter through phosphor separation
KR101662010B1 (ko) 2010-05-20 2016-10-05 엘지이노텍 주식회사 발광 소자
US8684559B2 (en) 2010-06-04 2014-04-01 Cree, Inc. Solid state light source emitting warm light with high CRI
KR101719655B1 (ko) 2010-09-29 2017-03-24 서울반도체 주식회사 형광체 시트, 형광체 시트를 갖는 발광장치 및 그 제조 방법
US8556469B2 (en) 2010-12-06 2013-10-15 Cree, Inc. High efficiency total internal reflection optic for solid state lighting luminaires
US8772817B2 (en) 2010-12-22 2014-07-08 Cree, Inc. Electronic device submounts including substrates with thermally conductive vias
US11251164B2 (en) 2011-02-16 2022-02-15 Creeled, Inc. Multi-layer conversion material for down conversion in solid state lighting
KR102062383B1 (ko) * 2011-12-01 2020-01-06 서울반도체 주식회사 간접 조명 장치
JP5985322B2 (ja) * 2012-03-23 2016-09-06 株式会社東芝 半導体発光装置及びその製造方法
US9500355B2 (en) 2012-05-04 2016-11-22 GE Lighting Solutions, LLC Lamp with light emitting elements surrounding active cooling device
CN104241262B (zh) 2013-06-14 2020-11-06 惠州科锐半导体照明有限公司 发光装置以及显示装置
WO2016004374A1 (en) * 2014-07-02 2016-01-07 Trustees Of Boston University Ultraviolet light emitting diodes
US11592166B2 (en) 2020-05-12 2023-02-28 Feit Electric Company, Inc. Light emitting device having improved illumination and manufacturing flexibility
US11876042B2 (en) 2020-08-03 2024-01-16 Feit Electric Company, Inc. Omnidirectional flexible light emitting device

Family Cites Families (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7018169A (https=) 1970-03-09 1971-09-13
GB1328303A (en) 1971-06-24 1973-08-30 Standard Telephones Cables Ltd Ga as diode-phosphor lamps
JPS48102585A (https=) 1972-04-04 1973-12-22
US3774086A (en) 1972-09-25 1973-11-20 Gen Electric Solid state lamp having visible-emitting phosphor at edge of infrated-emitting element
US4081764A (en) 1972-10-12 1978-03-28 Minnesota Mining And Manufacturing Company Zinc oxide light emitting diode
US3864592A (en) 1973-03-22 1975-02-04 Rca Corp Electroluminescent semiconductor display
US4668049A (en) 1984-12-18 1987-05-26 Itt Corporation Illumination for a scattering type liquid crystal display
US4822144A (en) * 1986-12-24 1989-04-18 U.S. Philips Corporation Electro-optic color display including luminescent layer and interference filter
CA1274613A (en) * 1986-12-24 1990-09-25 Leendert Vriens Projection device and associated display device
US4894116A (en) 1987-05-20 1990-01-16 Planar Systems, Inc. Phosphor only etching process for TFEL panel having multiple-colored display
JP2914981B2 (ja) 1988-07-27 1999-07-05 パイオニア株式会社 表示装置
JPH0291980A (ja) * 1988-09-29 1990-03-30 Toshiba Lighting & Technol Corp 固体発光素子
US5126214A (en) 1989-03-15 1992-06-30 Idemitsu Kosan Co., Ltd. Electroluminescent element
DE69117781T2 (de) 1990-03-14 1996-10-31 Matsushita Electric Ind Co Ltd Licht-emittierender Dünnfilm und elektrolumineszente Dünnfilmvorrichtung
US5267062A (en) 1991-08-26 1993-11-30 Rockwell International Corporation System for backlighting LCD matrices including luminescent dots each followed by and at the focal point of a lens
US5578839A (en) 1992-11-20 1996-11-26 Nichia Chemical Industries, Ltd. Light-emitting gallium nitride-based compound semiconductor device
US5396406A (en) 1993-02-01 1995-03-07 Display Technology Industries Thin high efficiency illumination system for display devices
US5422902A (en) * 1993-07-02 1995-06-06 Philips Electronics North America Corporation BeTe-ZnSe graded band gap ohmic contact to p-type ZnSe semiconductors
JPH0794781A (ja) * 1993-09-24 1995-04-07 Toshiba Corp 面発光型半導体発光ダイオード
JPH0799345A (ja) 1993-09-28 1995-04-11 Nichia Chem Ind Ltd 発光ダイオード
US5442204A (en) * 1994-05-12 1995-08-15 Philips Electronics North America Corporation III-V Semiconductor heterostructure contacting a P-type II-VI compound
US5557115A (en) * 1994-08-11 1996-09-17 Rohm Co. Ltd. Light emitting semiconductor device with sub-mount
JP3326545B2 (ja) * 1994-09-30 2002-09-24 ローム株式会社 半導体発光素子
US5625202A (en) * 1995-06-08 1997-04-29 University Of Central Florida Modified wurtzite structure oxide compounds as substrates for III-V nitride compound semiconductor epitaxial thin film growth
JP2783210B2 (ja) * 1995-09-04 1998-08-06 日本電気株式会社 面発光型ダイオード
US5581150A (en) 1995-10-13 1996-12-03 Planar Systems, Inc. TFEL device with injection layer
JPH09153645A (ja) * 1995-11-30 1997-06-10 Toyoda Gosei Co Ltd ３族窒化物半導体発光素子
US5650692A (en) 1996-01-11 1997-07-22 Planar Systems, Inc. Electroluminescent device construction employing polymer derivative coating
US5667724A (en) 1996-05-13 1997-09-16 Motorola Phosphor and method of making same
WO1997048138A2 (en) 1996-06-11 1997-12-18 Philips Electronics N.V. Visible light emitting devices including uv-light emitting diode and uv-excitable, visible light emitting phosphor, and method of producing such devices
JP3065258B2 (ja) * 1996-09-30 2000-07-17 日亜化学工業株式会社 発光装置及びそれを用いた表示装置
US5834331A (en) * 1996-10-17 1998-11-10 Northwestern University Method for making III-Nitride laser and detection device
JPH10163526A (ja) 1996-11-27 1998-06-19 Matsushita Electron Corp 発光素子及び発光ダイオード
JP3737226B2 (ja) * 1996-12-24 2006-01-18 ローム株式会社 半導体発光素子
JP3378465B2 (ja) * 1997-05-16 2003-02-17 株式会社東芝 発光装置
US5813752A (en) * 1997-05-27 1998-09-29 Philips Electronics North America Corporation UV/blue LED-phosphor device with short wave pass, long wave pass band pass and peroit filters
US5813753A (en) * 1997-05-27 1998-09-29 Philips Electronics North America Corporation UV/blue led-phosphor device with efficient conversion of UV/blues light to visible light
US6229160B1 (en) * 1997-06-03 2001-05-08 Lumileds Lighting, U.S., Llc Light extraction from a semiconductor light-emitting device via chip shaping
US5847507A (en) 1997-07-14 1998-12-08 Hewlett-Packard Company Fluorescent dye added to epoxy of light emitting diode lens
JP2947344B2 (ja) * 1997-08-19 1999-09-13 サンケン電気株式会社 発光ダイオード装置
JPH11145519A (ja) * 1997-09-02 1999-05-28 Toshiba Corp 半導体発光素子、半導体発光装置および画像表示装置

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