JP2005520916A - 発光装置及び燐光体組成物 - Google Patents
発光装置及び燐光体組成物 Download PDFInfo
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- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7715—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing cerium
- C09K11/7716—Chalcogenides
- C09K11/7718—Chalcogenides with alkaline earth metals
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- C—CHEMISTRY; METALLURGY
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- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
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- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/7729—Chalcogenides
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
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- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/77347—Silicon Nitrides or Silicon Oxynitrides
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Computer Hardware Design (AREA)
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- Luminescent Compositions (AREA)
- Led Device Packages (AREA)
Abstract
Description
(1)励起イオンを伴うガス放電をもたらし得るような高電圧が必要
(2)高エネルギーUV量子の放出
(3)それ相応に短い耐用時間
従って、これらの欠点を克服するような装置のニーズが今なお存在する。
本発明のある実施態様では、光のパターンを発光、即ち放射する発光ダイオードを含む装置を提供する。この装置は、さらに、一般式(Ba1-x-y-zSrxCay)2SiO4:Euz(但し、0≦x≦1, 0≦y≦1, 0<z<1 である。)である燐光体を含む燐光体組成物を含むものである。
この燐光体は、支持体成分(ホスト)としてアルカリ土類ケイ酸塩格子と、添加物としての2価のユウロピウムとを含み、この組成物は光のパターンにあわせて置かれる。
このような燐光体の高い消光温度のため、このような装置は、特にチップ温度が150℃を超えるよな場合に高効率を呈する。
特に、燐光体が薄膜層に含まれている場合には、燐光体の高い消光温度が利点となる。
CaS:Ce, Cl、
Li2SrSiO4:Eu、
(Sr1-xCax)SiO4:Eu(但し、0≦x<1 である。)、
(Y1-xGdx)3(Al1-yGay)5O12:Ce(但し、0≦x<1, 0≦y<1 である。)、及び
(Sr1-x-yBaxCay)2Si5N8:Eu(但し、0≦x<1, 0≦y<1 である。)、
からなる群から選択されるような赤色燐光体とを含む燐光体組成物を具える発光装置を提供する。このような燐光体組成物の放射スペクトルは、必要とされる色温度で優れた演色を持つ高品質の白色光とLEDの青色光とを一緒に得るために適切な波長を持つ。
(Sr1-x-yBaxCay)S:Eu(但し、0≦x<1, 0≦y<1である。)、
CaS:Ce, Cl、
Li2SrSiO4:Eu、
(Sr1-xCax)SiO4:Eu(但し、0≦x<1 である。)、
(Y1-xGdx)3(Al1-yGay)5O12:Ce(但し、0≦x<1, 0≦y<1 である。)、及び
(Sr1-x-yBaxCay)2Si5N8:Eu(但し、0≦x<1, 0≦y<1 である。)、
からなる群から選択する。
(Ba0.49Sr0.49)2SiO4:Eu0.02の調製
15.009(76.01mmol)BaCO3、11.22(76.01mmol)SrCO3、0.546(1.55mmol)EU203、及び4.809(79090mmol)SiO2をエタノールのなかで懸濁させる。溶媒を攪拌させながら蒸発させ、次にNH4Clを乾燥させた粉末に加える。この物質が完全に瑪瑙乳鉢ですりつぶした後、この物質をアルミナ坩堝に入れ、600℃で0.5時間加熱する。粉末を再度すりつぶし、得られた粉末をN2/H2存在下で4時間1100℃から1200℃までの間で熱処理する。N2/H2存在下で室温まで冷却し、粉末を粉砕し36μmの篩でふるいにかける。
このようにして調製された(Ba0.49Sr0.49)2SiO4:Eu0.02の分光特性は、70%のQE460nm、80%のAbs460nm、483[lm/W]のLE、色点(colour point)x=0.24、y=0.65である。
(Ba0.49Sr0.49)2SiO4:Eu0.02とSr2Si5N8:Euとを具える白色LED
(Ba0.49Sr0.49)2SiO4:Eu0.02とSr2Si5N8:Euとを含む燐光体混合物をシリコンモノマーオイルのなかで懸濁させ、この懸濁液の液滴をInGaNのダイ(die)にうえに置く。触媒をこのシリコンモノマーに加えて重合プロセスを開始させ、その結果シリコンが硬化する。最終的にLEDをプラスチックのキャップで密閉する。
(Ba0.49Sr0.49)2SiO4:Eu0.02とSrS:Euとを具える白色LED
(Ba0.49Sr0.49)2SiO4:Eu0.02とSrS:Euとを含む燐光体混合物はをシリコンモノマーオイルのなかで懸濁させ、この懸濁液の液滴をInGaNのダイ(die)にうえに置く。触媒をこのシリコンモノマーに加えて重合プロセスを開始させ、その結果シリコンが硬化する。最終的にLEDをプラスチックのキャップで密閉する。
Claims (9)
- 一般式(Ba1-x-y-zSrxCay)2SiO4:Euz(但し、0≦x≦1, 0≦y≦1, 0<z<1 である。)である燐光体組成物と、光のパターンを発光するLEDとを具える発光装置。
- 請求項1に記載の発光装置において、
前記発光装置が450nmから480nmまでの波長で発光する、ことを特徴とする発光装置。 - 請求項1または2に記載の発光装置において、
前記燐光体組成物が薄膜層に含まれている、ことを特徴とする発光装置。 - 請求項1に記載の発光装置において、
前記LEDが青色発光LEDである、ことを特徴とする発光装置。 - 請求項1に記載の発光装置において、
前記燐光体組成物が、
一般式(Ba1-x-y-zSrxCay)2SiO4:Euz(但し、0≦x≦1, 0≦y≦1, 0<z<1 である。)である緑色燐光体と、赤色燐光体とを含む、
ことを特徴とする発光装置。 - 請求項5に記載の発光装置において、
前記赤色燐光体が、
(Sr1-x-yBaxCay)S:Eu(但し、0≦x<1, 0≦y<1である。)、
CaS:Ce, Cl、
Li2SrSiO4:Eu、
(Sr1-xCax)SiO4:Eu(但し、0≦x<1 である。)、
(Y1-xGdx)3(Al1-yGay)5O12:Ce(但し、0≦x<1, 0≦y<1 である。)、及び
(Sr1-x-yBaxCay)2Si5N8:Eu(但し、0≦x<1, 0≦y<1 である。)、
からなる群から選択されるものである、
ことを特徴とする発光装置。 - 請求項1に記載の発光装置において、
前記発光装置がランプである、ことを特徴とする発光装置。 - 請求項1に記載の発光装置において、
前記発光装置が交通標識である、ことを特徴とする発光装置。 - 一般式(Ba1-x-y-zSrxCay)2SiO4:Euz(但し、0≦x≦1, 0≦y≦1, 0<z<1 である。)である燐光体を含む燐光体組成物。
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EP02006776 | 2002-03-25 | ||
PCT/IB2003/001042 WO2003080763A1 (en) | 2002-03-25 | 2003-03-21 | Tri-color white light led lamp |
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JP2005520916A true JP2005520916A (ja) | 2005-07-14 |
JP4431400B2 JP4431400B2 (ja) | 2010-03-10 |
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US (2) | US7642708B2 (ja) |
EP (1) | EP1490453B1 (ja) |
JP (1) | JP4431400B2 (ja) |
AU (1) | AU2003215785A1 (ja) |
TW (1) | TWI302936B (ja) |
WO (1) | WO2003080763A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006237113A (ja) * | 2005-02-23 | 2006-09-07 | Sumitomo Chemical Co Ltd | 白色led |
JP2006299259A (ja) * | 2005-04-15 | 2006-11-02 | Patent Treuhand Ges Elektr Gluehlamp Mbh | 青色ないし黄橙色の発光を示す蛍光物質及びかかる蛍光体を有する光源 |
JP2007500776A (ja) * | 2003-05-17 | 2007-01-18 | フォスファーテック コーポレーション | シリケート蛍光りん光物質を有する発光装置 |
JP2007158296A (ja) * | 2005-12-01 | 2007-06-21 | Samsung Electronics Co Ltd | 白色発光ダイオード |
WO2007091687A1 (ja) * | 2006-02-10 | 2007-08-16 | Mitsubishi Chemical Corporation | 蛍光体及びその製造方法、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 |
JP2009209332A (ja) * | 2008-03-06 | 2009-09-17 | Sharp Corp | 発光装置用蛍光体およびそれを用いた発光装置 |
Families Citing this family (85)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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- 2003-03-21 JP JP2003578495A patent/JP4431400B2/ja not_active Expired - Lifetime
- 2003-03-21 EP EP03744945A patent/EP1490453B1/en not_active Expired - Lifetime
- 2003-03-21 WO PCT/IB2003/001042 patent/WO2003080763A1/en active Application Filing
- 2003-03-25 TW TW092106623A patent/TWI302936B/zh not_active IP Right Cessation
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2009
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JP2007500776A (ja) * | 2003-05-17 | 2007-01-18 | フォスファーテック コーポレーション | シリケート蛍光りん光物質を有する発光装置 |
JP2006237113A (ja) * | 2005-02-23 | 2006-09-07 | Sumitomo Chemical Co Ltd | 白色led |
JP2006299259A (ja) * | 2005-04-15 | 2006-11-02 | Patent Treuhand Ges Elektr Gluehlamp Mbh | 青色ないし黄橙色の発光を示す蛍光物質及びかかる蛍光体を有する光源 |
JP2007158296A (ja) * | 2005-12-01 | 2007-06-21 | Samsung Electronics Co Ltd | 白色発光ダイオード |
WO2007091687A1 (ja) * | 2006-02-10 | 2007-08-16 | Mitsubishi Chemical Corporation | 蛍光体及びその製造方法、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 |
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JP2009209332A (ja) * | 2008-03-06 | 2009-09-17 | Sharp Corp | 発光装置用蛍光体およびそれを用いた発光装置 |
Also Published As
Publication number | Publication date |
---|---|
TWI302936B (en) | 2008-11-11 |
EP1490453A1 (en) | 2004-12-29 |
JP4431400B2 (ja) | 2010-03-10 |
WO2003080763A1 (en) | 2003-10-02 |
US20100060144A1 (en) | 2010-03-11 |
US7642708B2 (en) | 2010-01-05 |
EP1490453B1 (en) | 2012-08-15 |
TW200307738A (en) | 2003-12-16 |
US20050200271A1 (en) | 2005-09-15 |
AU2003215785A1 (en) | 2003-10-08 |
WO2003080763A8 (en) | 2003-11-27 |
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