CN100416873C - 白色发光照明系统 - Google Patents

白色发光照明系统 Download PDF

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CN100416873C
CN100416873C CNB200480026470XA CN200480026470A CN100416873C CN 100416873 C CN100416873 C CN 100416873C CN B200480026470X A CNB200480026470X A CN B200480026470XA CN 200480026470 A CN200480026470 A CN 200480026470A CN 100416873 C CN100416873 C CN 100416873C
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fluorophor
light
white light
led
light emitting
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CN1853283A (zh
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V·D·希尔敦布兰德
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Koninklijke Philips NV
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    • 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, 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
    • C09K11/7734—Aluminates
    • 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, 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
    • C09K11/77342—Silicates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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

Abstract

一种白色发光照明系统，包括蓝色或UV发光二极管和包括具有大于550nm的峰值发射波长的黄色发光荧光体的涂层，其中该荧光体包括Sr2-x-y-zCayBazSiO4:Eux荧光体，并且其中0＜x＜＝0.06且0＜(3y+z)＜＝0.5。如果二极管是UV发光二极管，则该涂层此外还包括蓝色发光荧光体。

Description

白色发光照明系统
技术领域
本发明涉及白色发光照明系统，包括蓝色或UV发光二极管和包括黄色发光荧光体的涂层.
背景技术
传统的用于产生白光的LED照明系统典型地包括LED或荧光体LED.使用LED地的照明系统通过组合出各种不同的红色、绿色和蓝色LED的组合来产生白光.基于荧光体LED的照明系统通过使用蓝色或UV光LED顶部上的一种或多种不同的发光荧光体材料将所发出的一部分蓝色或UV光转换成波长较长的光来产生白光.如果使用的蓝光LED，则荧光体应当发黄光，以获得白光.如果使用UV光LED，则应当施加额外的荧光体，这一荧光体将部分UV光转换成蓝光，例如BaMgAl10O17:Eu荧光体.
与带有黄色发光荧光体的蓝光LED相比，使用带有蓝色和黄色发光荧光体的UV光LED的优点是，首先不太容易受到由存在于LED中的荧光体量的变化造成的颜色变化的影响.
一般来说，与基于LED的照明系统相比，用基于荧光体LED的照明系统产生白光比较容易，因为荧光体LED不需要进行混合并且材料成本较低(它们是自身混合的).
公知的方法是使用带有黄色发光荧光体的蓝色LED，该荧光体是铈掺杂的钇铝石榴石Y3Al5O12:Ce，也称为YAG:Ce.
发明内容
本发明的目的是提供一种可供选用的与蓝色或UV LED一起使用以便获得白光LED的黄色发光荧光体，并且所获得的白光LED可以具有更好的颜色或效率特性.
此外本发明提供了一种蓝色或UV发光二极管和包括黄色发光Sr2- x-y-zCayBazSiO4:Eux荧光体的涂层，并且其中0＜x＜＝0.06且0＜(3y+z)＜＝0.5.最好0＜x＜＝0.04，0＜＝y＜＝0.1和/或0＜＝z＜＝0.3.更好的情况是，0.01＜＝x＜＝0.03，0.01＜＝y＜＝0.06和/或0.03＜＝z＜＝0.25.测试证明，含有少量Ca、Ba和Eu的硅酸锶荧光体在大于550nm(黄色)的峰值发射波长下发光，这使得这样的荧光体适于期望的用途.
按照本发明，Sr的量占优，得到大于55Onm(黄色)的峰值发射波长，这使得将其与蓝色光混合并且获得仅由两种颜色成分组成的白色光成为可能.
附图说明
在考虑现在就要结合附图详细介绍的说明性实施方式的情况下，本发明的优点、本质和各种不同的附加特征将会更加充分地表露出来，其中：
附图1是用在本发明的照明系统中的典型荧光体LED的截面图.
附图2是表示荧光体实例的峰值发射波长的曲线图.
应当理解，附图的用途是解释说明本发明的概念，并不是按比例画出的.
具体实施方式
按照附图1，本发明的照明系统总的来说包括由蓝色或UV LED和至少一种发射一定光谱波长(颜色)的荧光体构成的荧光体LED 14，用来产生白光.LED 14是使用标准AlInGaN或AlInGaP工艺按照常规手段构成的，并且包括安装在用透明环氧树脂18填充的反射金属盘或反射体16上的LED芯片15.填充反射体16的环氧树脂18包含均匀混合于其中的一种或多种类型的发光荧光体材料的颗粒19.荧光体颗粒19将由LED芯片15发出的一部分光转换成不同光谱波长的光.
附图2表示Sr2-x-y-zCayBazSiO4:Eux型荧光体材料的五个测试实例的峰值发射波长.按照本发明，实例C、D和E可以用于与蓝色发光二极管进行组合，或者按照另外一种可选方案与UV发光二极管和蓝色发光荧光体组合，以产生白色光.
虽然前述发明是参照上述实例加以介绍的，但是可以对其进行各种不同的改造和改变，而不会超出本发明的思想.因此，所有这些改造和改变全都看作是处于所附的权利要求的范围内的.

Claims (10)

1. 一种白色发光照明系统，包括蓝色或UV发光二极管和包括具有大于550nm的峰值发射波长的黄色发光荧光体的涂层，其中该荧光体包括Sr2-x-y-zCayBazSiO4:Eux荧光体，并且其中0＜x≤0.06且0＜(3y+z)≤0.5。
2. 按照权利要求1所述的系统，其中0＜x≤0.04。
3. 按照权利要求1或2所述的系统，其中0＜y≤0.1。
4. 按照权利要求1或2所述的系统，其中0≤z≤0.3。
5. 按照前述权利要求1或2所述的系统，其中荧光体此外还包括铈掺杂钇铝石榴石(YAG:Ce)荧光体。
6. 按照前述权利要求1或2所述的系统，其中二极管是UV发光二极管，并且所述涂层此外还包括蓝色发光荧光体。
7. 按照权利要求6所述的系统，其中蓝色发光荧光体包括BaMgAl1-0O17:Eu荧光体。
8. 按照权利要求2所述的系统，其中0.01≤x≤0.03。
9. 按照权利要求3所述的系统，其中0.01≤y≤0.06。
10. 按照权利要求4所述的系统，其中0.03≤z≤0.25。
CNB200480026470XA 2003-09-15 2004-08-27 白色发光照明系统 Active CN100416873C (zh)

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EP (1) EP1665399B1 (zh)
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AT (1) ATE449426T1 (zh)
DE (1) DE602004024216D1 (zh)
WO (1) WO2005027231A1 (zh)

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KR20060034055A (ko) * 2004-10-18 2006-04-21 엘지이노텍 주식회사 형광체 및 이를 이용한 발광소자
JP4836429B2 (ja) 2004-10-18 2011-12-14 株式会社東芝 蛍光体およびこれを用いた発光装置
JP4880892B2 (ja) * 2004-10-18 2012-02-22 株式会社東芝 蛍光体，蛍光体の製造方法およびこれを用いた発光装置
US7501753B2 (en) * 2005-08-31 2009-03-10 Lumination Llc Phosphor and blends thereof for use in LEDs
US7859182B2 (en) 2005-08-31 2010-12-28 Lumination Llc Warm white LED-based lamp incoporating divalent EU-activated silicate yellow emitting phosphor
CN101077973B (zh) * 2006-05-26 2010-09-29 大连路明发光科技股份有限公司 硅酸盐荧光材料及其制造方法以及使用其的发光装置
JP2008135725A (ja) * 2006-10-31 2008-06-12 Toshiba Corp 半導体発光装置
TWI496315B (zh) * 2006-11-13 2015-08-11 Cree Inc 照明裝置、被照明的殼體及照明方法
CN102192422B (zh) * 2010-03-12 2014-06-25 四川新力光源股份有限公司 白光led照明装置
CN107129802A (zh) * 2017-04-19 2017-09-05 南昌大学 铕掺杂碱土正硅酸盐基绿色荧光粉体及其制备方法

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DE1801486A1 (de) * 1967-10-26 1969-05-29 Philips Nv Leuchtschirm
CN1289455A (zh) * 1998-11-30 2001-03-28 通用电气公司 具有高发光效率的含磷光体的发光器件
WO2001089001A2 (en) * 2000-05-15 2001-11-22 General Electric Company White light emitting phosphor blends for led devices
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WO2005027231A1 (en) 2005-03-24
JP2007506264A (ja) 2007-03-15
US20070075620A1 (en) 2007-04-05
CN1853283A (zh) 2006-10-25
ATE449426T1 (de) 2009-12-15
DE602004024216D1 (de) 2009-12-31
EP1665399B1 (en) 2009-11-18
EP1665399A1 (en) 2006-06-07

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