JP2006306981A - 窒化物蛍光体及びそれを用いた発光装置 - Google Patents
窒化物蛍光体及びそれを用いた発光装置 Download PDFInfo
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
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- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
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- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
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Abstract
【解決手段】窒化物蛍光体は、ユーロピウムで賦活された近紫外線乃至青色光を吸収して赤色に発光する窒化物蛍光体であって、以下の一般式で示され、w、x、y、zを以下の範囲とし、さらに添加元素として希土類元素、4価の元素、3価の元素の少なくともいずれかを含む。
MwAlxSiyN((2/3)w+x+(4/3)y):Eu2+
MはMg、Ca、Sr、Baの群から選ばれる少なくとも一
0.04≦w≦9、x=1、0.056≦y≦18
【効果】ピーク波長を長波長にシフトできるので、高価な希土類元素であるユーロピウムの賦活量を少なくしても、より深い赤色に発光できる。
【選択図】図4
Description
MはMg、Ca、Sr、Baの群から選ばれる少なくとも1種
0.04≦w≦9、x=1、0.056≦y≦18
MはMg、Ca、Sr、Baの群から選ばれる少なくとも1種、
0.04≦w≦9、x=1、0.056≦y≦18、0.001≦z≦0.5
(発光装置1)
(発光装置2)
(蛍光体)
Euを必須とする混合物を使用する場合、所望により配合比を変えることができる。ユーロピウムは、主に2価と3価のエネルギー準位を持つが、本発明の実施の形態に係る窒化物蛍光体は、母体のCaに対して、Eu2+を賦活剤として用いる。Eu2+は、酸化されやすく、3価のEu2O3の組成で市販されている。しかし、市販のEu2O3では、Oの関与が大きく、良好な蛍光体が得られにくい。そのため、Eu2O3からOを、系外へ除去したものを使用することが好ましい。たとえば、ユーロピウム単体、窒化ユーロピウムを用いることが好ましい。
(蛍光体の製造方法)
(蛍光体)
(励起光源)
(発光素子)
(発光素子)
(コーティング部材)
(リードフレーム)
(導電性ワイヤ)
(モールド部材)
(実施例1〜10、比較例1〜3)
(希土類元素)
(比較例1〜3)
(実施例11〜25)
(Lu系)
(実施例26〜37)
(Y系)
(実施例38〜42)
(Sc系)
(実施例43〜46)
(Ga系)
(実施例47〜50)
(In系)
(実施例51〜58)
(Ge、Zr系)
(比較例4)
(実施例59〜70)
(ホウ素及び希土類元素)
(比較例5〜7)
(実施例71〜77)
(比較例8)
<発光装置1>
<発光装置2>
<発光装置3>
2…半導体層
3…電極
4…バンプ
10…発光素子
11…蛍光体
12…コーティング部材
13…リードフレーム
13a…マウントリード
13b…インナーリード
14…導電性ワイヤ
15…モールド部材
101…発光素子
102…リード電極
103…絶縁封止材
104…導電性ワイヤ
105…パッケージ
106…リッド
107…窓部
108…蛍光体
109…コーティング部材
Claims (4)
- ユーロピウムで賦活される窒化物蛍光体であって、
以下の一般式で示され、w、x、y、zを以下の範囲とし、さらにLa、Ce、Pr、Gd、Tb、Dy、Ho、Er、Luの群から選ばれる少なくとも1種、またはSc、Y、Ga、Inのいずれか1種、またはGe、Zrのいずれか1種、が含有されていることを特徴とする窒化物蛍光体。
MwAlxSiyN((2/3)w+x+(4/3)y):Eu
MはMg、Ca、Sr、Baの群から選ばれる少なくとも1種、
0.04≦w≦9、x=1、0.056≦y≦18 - ユーロピウムで賦活される窒化物蛍光体であって、
以下の一般式で示され、w、x、y、zを以下の範囲とし、さらにLa、Ce、Pr、Gd、Tb、Dy、Ho、Er、Luの群から選ばれる少なくとも1種、またはSc、Y、Ga、Inのいずれか1種、または4価の元素Ge、Zrのいずれか1種、が含有されていることを特徴とする窒化物蛍光体。
MwAlxSiyBzN((2/3)w+x+(4/3)y+z):Eu
MはMg、Ca、Sr、Baの群から選ばれる少なくとも1種、
0.04≦w≦9、x=1、0.056≦y≦18、0.001≦z≦0.5 - 請求項1または2のいずれかに記載の窒化物蛍光体であって、
組成中にOが含有されていることを特徴とする窒化物蛍光体。 - 近紫外線から青色光を発する第1の発光スペクトルを有する励起光源と、
第1の発光スペクトルの少なくとも一部を吸収して、第2の発光スペクトルを発光する1種または2種以上の蛍光体と、
を有する発光装置であって、
前記蛍光体は、請求項1から3の少なくとも一項に記載の窒化物蛍光体を有することを特徴とする発光装置。
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JP2005130565A JP5066786B2 (ja) | 2005-04-27 | 2005-04-27 | 窒化物蛍光体及びそれを用いた発光装置 |
PCT/JP2006/307672 WO2006117984A1 (ja) | 2005-04-27 | 2006-04-11 | 窒化物蛍光体及びそれを用いた発光装置 |
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JP2006306981A true JP2006306981A (ja) | 2006-11-09 |
JP5066786B2 JP5066786B2 (ja) | 2012-11-07 |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006306982A (ja) * | 2005-04-27 | 2006-11-09 | Nichia Chem Ind Ltd | 窒化物蛍光体及びそれを用いた発光装置 |
WO2009028656A1 (ja) * | 2007-08-30 | 2009-03-05 | Nichia Corporation | 発光装置 |
WO2009028370A1 (ja) * | 2007-08-30 | 2009-03-05 | Toppan Printing Co., Ltd. | 液晶表示装置およびそれに用いるカラーフィルタ |
JP2009076836A (ja) * | 2007-08-30 | 2009-04-09 | Toppan Printing Co Ltd | 液晶表示装置およびそれに用いるカラーフィルタ |
US20090140630A1 (en) | 2005-03-18 | 2009-06-04 | Mitsubishi Chemical Corporation | Light-emitting device, white light-emitting device, illuminator, and image display |
JP2009151245A (ja) * | 2007-12-21 | 2009-07-09 | Toppan Printing Co Ltd | 液晶表示装置およびそれに用いるカラーフィルタ |
JP2010518194A (ja) * | 2007-02-06 | 2010-05-27 | 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 | 赤色放射蛍光材料 |
JP2011080068A (ja) * | 2006-03-10 | 2011-04-21 | Toshiba Corp | 蛍光体 |
US8206611B2 (en) | 2005-05-24 | 2012-06-26 | Mitsubishi Chemical Corporation | Phosphor and use thereof |
CN103113884A (zh) * | 2013-02-05 | 2013-05-22 | 江门市远大发光材料有限公司 | 一种基于氮化物红色荧光粉的led植物生长灯 |
JP2014224231A (ja) * | 2013-04-26 | 2014-12-04 | 日亜化学工業株式会社 | 蛍光体及びそれを用いた発光装置並びに蛍光体の製造方法 |
CN106795429A (zh) * | 2014-10-23 | 2017-05-31 | 三菱化学株式会社 | 荧光体、发光装置、照明装置和图像显示装置 |
JP2017149963A (ja) * | 2013-04-26 | 2017-08-31 | 日亜化学工業株式会社 | 蛍光体及びそれを用いた発光装置 |
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Cited By (29)
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US9028718B2 (en) | 2005-03-18 | 2015-05-12 | Mitsubishi Chemical Corporation | Light-emitting device, white light-emitting device, illuminator, and image display |
US8269410B2 (en) | 2005-03-18 | 2012-09-18 | Mitsubishi Chemical Corporation | Light-emitting device, white light-emitting device, illuminator, and image display |
US20090140630A1 (en) | 2005-03-18 | 2009-06-04 | Mitsubishi Chemical Corporation | Light-emitting device, white light-emitting device, illuminator, and image display |
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US8703019B2 (en) | 2005-05-24 | 2014-04-22 | Mitsubishi Chemical Corporation | Phosphor and use thereof |
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