JP6054180B2 - 蛍光体及びその製造方法、白色発光装置、面光源装置、ディスプレー装置、及び照明装置 - Google Patents
蛍光体及びその製造方法、白色発光装置、面光源装置、ディスプレー装置、及び照明装置 Download PDFInfo
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- JP6054180B2 JP6054180B2 JP2012552807A JP2012552807A JP6054180B2 JP 6054180 B2 JP6054180 B2 JP 6054180B2 JP 2012552807 A JP2012552807 A JP 2012552807A JP 2012552807 A JP2012552807 A JP 2012552807A JP 6054180 B2 JP6054180 B2 JP 6054180B2
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Description
前記組成式中、MはSrとBaのうちから選択される少なくとも1種であり、Eu添加量(a)は0.1乃至5mol%の範囲であり、M添加量(b)は0.1乃至10mol%の範囲であり、Al組成比(z)は0.1<z<1を満足し、
励起源を照射して500乃至550nmの範囲にピーク波長を有する光を放出し、
Mはドーパントとして蛍光体結晶構造の空隙に添加される、ことを特徴とする。
前記組成式中、MはSrとBaのうちから選択される少なくとも1種であり、Eu添加量(a)は100乃至5000ppmの範囲であり、M添加量(b)は100乃至10000ppmの範囲であり、Al組成比(z)は0.1<z<1を満足し、
励起源を照射して500乃至550nmの範囲にピーク波長を有する光を放出し、
Mはドーパントとして蛍光体結晶構造の空隙に添加される、ことを特徴とする。
1)MはSrとBaのうちから選択される少なくとも1種である。
2)Eu添加量(a)は0.1〜5mol%の範囲である。
3)M添加量(b)は0.1〜5mol%の範囲である。
4)Al組成比(z)は0.1<z<1である。
原料物質Si3N4、AlN、Al2O3、Eu2O3、SrCO3を下記の表1の組成比を満足する化学量論比で秤量して、実施例1による原料物質群を用意する。原料物質群のうちのSrCO3を除いて残りの原料物質を、ボールミルを用いてエタノール溶媒と混合する。
Sr原料物質に関連する事項のみを除き実施例1の条件のうちの1次焼成条件まで工程を同一に行った後、得られた蛍光体を実施例1の条件と同一に粉砕し、後熱処理及び酸洗工程によりSi5.8Al0.2O0.2N7.8:Eu0.0152であるβ−サイアロン蛍光体を製造した。
実施例2〜5では、実施例1の条件と同一に行い、且つ表1の組成比を満足するようにそれぞれSrを1.5mol%、2mol%、3mol%、及び4mol%添加したβ−サイアロン蛍光体を製造した。
比較例2〜4では、SrCO3の代わりにCa含有化合物としてCaCO3を用いることを除いては実施例1と同一の条件と工程により表3の比較例2〜4の組成比を満足するようにそれぞれCaを0.5mol%、1.0mol%、及び1.5mol%添加したβ−サイアロン蛍光体を製造した。
比較例5では、SrCO3の代わりにMg含有化合物としてMgCO3を用いることを除いては実施例1と同一の条件と工程により表3の比較例5の組成比を満足するようにMgを1.0mol%添加したβ−サイアロン蛍光体を製造した。
本実施例では、SrCO3と共にBa含有化合物であるBaCO3を更に用いることを除いては実施例1と同一の条件と工程により表3の実施例6の組成比を満足するようにSr、Baをそれぞれ0.5mol%ずつ添加したβ−サイアロン蛍光体を製造した。
本実施例では、SrCO3の代わりにBa含有化合物であるBaCO3を用いることを除いては実施例1と同一の条件と工程により表3の実施例7の組成比を満足するようにBaを1.0mol%添加したβ−サイアロン蛍光体を製造した。
本実施例では、AlN及びAl2O3を最終蛍光体におけるAl組成比(z)が0.1、0.2、0.3、0.4、0.5、1.0(それぞれ実施例8〜13)となるように秤量し、1次原料混合物に一緒に混合することを除いては実施例1と同一の条件と工程によりβ−サイアロン蛍光体を製造した。
本比較例では、AlN及びAl2O3を最終蛍光体におけるAl組成比(z)が1.5、2.0(それぞれ実施例5及び6)となるように秤量し、1次原料混合物に一緒に混合することを除いては実施例1と同一の条件と工程によりβ−サイアロン蛍光体を製造した。
本実施例では、Eu2O3を最終蛍光体におけるEuモル比(a)が0.65、0.98、1.30、1.52、1.73、1.95、2.17、2.38、2.60、3.90mol%(それぞれ実施例14〜23)となるように秤量し、1次原料混合物に一緒に混合することを除いては実施例1と同一の条件と工程によりβ−サイアロン蛍光体を製造した。
12、22 緑色蛍光体
14、24 赤色蛍光体
15、25、35 青色LEDチップ
19、29、39 樹脂包装部
21、31 パッケージ本体
26 黄色又は黄橙色蛍光体
32 第1の樹脂層(緑色蛍光体)
34 第2の樹脂層(赤色蛍光体)
36 第3の樹脂層(黄色又は黄橙色蛍光体)
50、60 LCDバックライト用光源モジュール
51、61 回路基板
100、200、300 発光素子
101 (Si−Al合金)基板
102 接合金属層
103 反射金属層
104 p型半導体層
105、260、360 活性層
106 n型半導体層
107 n側電極
110 シード金属層
120 保護層
122 導電層
123 コンタクト金属層
210、310 導電性基板
220、320 第1の電極層
230、330 絶縁層
240、340 第2の電極層
245、345 電気連結部(露出領域)
247、347 電極パッド部
250、350 第2の導電型半導体層
270、370 第1の導電型半導体層
280、380 コンタクト孔
290、390 接触領域
1300、1510、1610、2100 LED光源モジュール
1310、1501、1601、2110 印刷回路基板
1350、1505、1605、1705、2150 LED光源
1420、2220 反射板
1440、1640、1740、2240 導光板
1500、1600、1700、1800、2200 バックライトユニット
1550 蛍光体フィルム
1650、1750 蛍光体膜
1704 光拡散板
1710、2210 ボトムケース
2000 ディスプレー装置
2260 光学シート
2300 画像表示パネル
Claims (2)
- β型Si3N4の結晶構造を有し、組成式Si6−zAlzOzN8−z:Eua、Mb(ここで、MはSrとBaのうちから選択される少なくとも1種であり、Eu添加量(a)は0.65乃至3.90mol%の範囲であり、M添加量(b)は1乃至4mol%の範囲であり、Al組成比(z)は0.1乃至1の範囲である)で表される酸窒化物蛍光体を製造するために、Si含有酸化物又は窒化物、Al含有酸化物又は窒化物、Eu含有化合物、及びM含有化合物を含む原料物質を測量する段階と、
前記M含有化合物を除いた前記原料物質を混合して1次混合物を製造する段階と、
前記1次混合物を1次焼成し、該1次焼成の結果物を粉砕する段階と、
前記粉砕された1次焼成の結果物に前記M含有化合物を混合して2次混合物を製造する段階と、
前記2次混合物を2次焼成し、該2次焼成の結果物を粉砕する段階と、を有し、
Mはドーパントとして前記結晶構造の空隙に添加される、ことを特徴とする蛍光体の製造方法。 - 前記1次焼成は1850乃至2300℃の温度範囲で行われ、前記2次焼成は前記1次焼成温度より低い温度で行われることを特徴とする請求項1に記載の蛍光体の製造方法。
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KR100899401B1 (ko) * | 2005-05-12 | 2009-05-26 | 도쿠리츠교세이호징 붓시쯔 자이료 겐큐키코 | β형 사이알론 형광체 |
JP5122765B2 (ja) | 2006-06-09 | 2013-01-16 | 電気化学工業株式会社 | 蛍光体の製造方法、蛍光体と照明器具 |
KR100930171B1 (ko) | 2006-12-05 | 2009-12-07 | 삼성전기주식회사 | 백색 발광장치 및 이를 이용한 백색 광원 모듈 |
KR100990647B1 (ko) * | 2006-12-05 | 2010-10-29 | 삼성엘이디 주식회사 | 백색 발광장치 및 이를 이용한 백색 광원 모듈 |
JP3975451B2 (ja) * | 2006-12-19 | 2007-09-12 | 独立行政法人物質・材料研究機構 | 蛍光体を用いた照明器具および画像表示装置 |
JP5200741B2 (ja) * | 2007-08-01 | 2013-06-05 | 三菱化学株式会社 | 結晶性窒化珪素及びその製造方法、並びに、それを用いた蛍光体、該蛍光体含有組成物、発光装置、照明装置、画像表示装置、焼結体及び顔料 |
CN101883835B (zh) | 2007-12-03 | 2013-05-29 | 皇家飞利浦电子股份有限公司 | 包含绿色发光SiAlON基材料的发光器件 |
WO2010027016A1 (ja) * | 2008-09-05 | 2010-03-11 | シャープ株式会社 | 窒化物半導体発光素子および半導体発光素子 |
KR101717668B1 (ko) * | 2010-03-26 | 2017-03-17 | 삼성전자주식회사 | 복합 결정 형광체, 발광장치, 디스플레이 장치 및 조명장치 |
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DE112011100522B4 (de) | 2022-03-31 |
US20120306356A1 (en) | 2012-12-06 |
WO2011099800A2 (ko) | 2011-08-18 |
CN102844405B (zh) | 2014-08-20 |
DE112011100522T5 (de) | 2012-11-29 |
KR20110093519A (ko) | 2011-08-18 |
KR101077990B1 (ko) | 2011-10-31 |
US9127203B2 (en) | 2015-09-08 |
CN102844405A (zh) | 2012-12-26 |
WO2011099800A3 (ko) | 2011-12-15 |
JP2013519750A (ja) | 2013-05-30 |
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