KR101115855B1 - 형광체와 그 제조 방법, 및 그것을 사용한 발광 소자 - Google Patents
형광체와 그 제조 방법, 및 그것을 사용한 발광 소자 Download PDFInfo
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- KR101115855B1 KR101115855B1 KR1020077017685A KR20077017685A KR101115855B1 KR 101115855 B1 KR101115855 B1 KR 101115855B1 KR 1020077017685 A KR1020077017685 A KR 1020077017685A KR 20077017685 A KR20077017685 A KR 20077017685A KR 101115855 B1 KR101115855 B1 KR 101115855B1
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- phosphor
- sialon
- powder
- transparent film
- refractive index
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Abstract
Description
Claims (26)
- 일반식 : (M1)X(M2)Y(Si)12-(m+n)(Al)m+n(O)n(N)16-n (단, M1 은 Li, Mg, Ca, Y 및 란타니드 금속 (La 와 Ce 를 제외한다) 으로 이루어지는 군에서 선택되는 1 종 이상의 원소이고, M2 는 Ce, Pr, Eu, Tb, Yb 및 Er 에서 선택되는 1 종 이상의 원소이고, 0.3≤X+Y≤1.5, 0<Y≤0.7, 0.6≤m≤3.0, 0≤n≤1.5, X+Y=m/2) 으로 나타나는 α 형 사이알론으로 이루어지는 분말상의 형광체이고,상기 α 형 사이알론의 분말 중의 산소 함유량이, 상기 일반식에 기초하여 계산되는 값보다, 그 값의 0.4 질량% 를 초과하지 않는 범위에서 많게 되어 있는 형광체.
- 삭제
- 일반식 : (M1)X(M2)Y(Si,Al)12(O,N)16 (단, 0.3≤X+Y≤1.5, 0<Y≤0.7) 로 나타나는 α 형 사이알론이고, 상기 α 형 사이알론의 분말을 구성하는 1 차 입자의 평균 애스펙트비가 3 이하이고, 또한 상기 1 차 입자의 80% (개수 백분율) 이상의 것의 직경이 3~10㎛ 인 α 형 사이알론으로 이루어지는 분말상의 형광체.
- 제 1 항 또는 제 3 항에 있어서,상기 일반식이 (Ca,Eu)m/2(Si)12-(m+n)(Al)m+n(O)n(N)16-n 이고, Eu 함유량이 0.1~0.35at%, 격자 상수 a 가 0.780~0.790㎚, 격자 상수 c 가 0.560~0.580㎚ 인 형광체.
- 금속의 질화물 또는 산질화물의 입자로 구성되는 분말상의 형광체로서, 상기 금속의 질화물 또는 산질화물의 입자의 적어도 일부 표면에, 두께 (10~180)/n (단위 : 나노미터, n : 투명막의 굴절률 (1.2~2.5)) 의 투명막이 형성되어 있는 것을 특징으로 하는 형광체.
- 제 1 항, 제 3 항 또는 제 5 항 중 어느 한 항에 있어서,사이알론의 분말 입자의 적어도 일부 표면에 투명막을 가지며, 그 투명막의 굴절률 (n) 이 1.2~2.5 이고, 두께 (10~180)/n (단위 : 나노미터, n : 투명막의 굴절률 (1.2~2.5)) 의 투명막이 형성되어 있는 형광체.
- 제 1 항 또는 제 3 항에 있어서,M1 이 적어도 Ca 를 함유하고, 또한 M2 가 적어도 Eu 를 함유하는 형광체.
- 제 7 항에 있어서,M1 이 Ca 이고, 또한 M2 가 Eu 인 형광체.
- 제 5 항에 있어서,상기 투명막의 굴절률 (n) 이 1.5~2.0 인 형광체.
- 제 1 항 또는 제 3 항에 있어서,불소를 5~300ppm 함유하는 형광체.
- 제 1 항 또는 제 3 항에 있어서,붕소를 10~3000ppm 함유하는 형광체.
- 제 1 항 또는 제 3 항에 있어서,M1 이 적어도 Ca 를 함유하고, M2 가 적어도 Eu 를 함유하고, 또한, 0.01<Y/(X+Y)<0.3 이고, 발광 파장의 최대 강도가 100~500㎚ 에 있는 자외선 또는 가시광을 조사함으로써, 550~600㎚ 의 범위의 파장역에 피크가 있는 발광 특성을 갖는 형광체.
- 제 1 항 또는 제 3 항에 있어서,상기 α 형 사이알론의 분말 입자의 평균 입경이 1~20㎛ 인 형광체.
- 제 1 항 또는 제 3 항에 있어서,상기 α 형 사이알론을 구성하는 원소 이외의 불순물이 1 질량% 이하인 형광체.
- 일반식 : CaX(M2)Y(Si)12-(m+n)(Al)m+n(O)n(N)16-n (단, M2 는 Ce, Pr, Eu, Tb, Yb 및 Er 에서 선택되는 1 종 이상의 원소이고, 0.3≤X+Y≤1.5, 0<Y≤0.7, 0.6≤m≤3.0, 0≤n≤1.5, X+Y=m/2) 으로 나타나는 α 형 사이알론으로 이루어지는 형광체의 제조 방법으로서, Ca 의 원료로서, 염화칼슘, 황화칼슘, 질화칼슘, 칼슘시아나미드, 탄화칼슘 중 어느 하나의 칼슘 화합물을 사용하는 것을 특징으로 하는 형광체의 제조 방법.
- 제 15 항에 있어서,Ca 의 원료로서, 산소를 함유하지 않은 칼슘 화합물과 산소를 함유하는 칼슘 화합물을 병용하는 형광체의 제조 방법.
- 제 16 항에 있어서,산소를 함유하지 않은 칼슘 화합물을, 산소를 함유하는 칼슘 화합물에 대하여, 몰비로 0.5 배 이상 사용하는 형광체의 제조 방법.
- 제 15 항 내지 제 17 항 중 어느 한 항에 있어서,전체 원료 중의 산소 함유량을 4 질량% 이하로 하는 형광체의 제조 방법.
- 제 15 항 내지 제 17 항 중 어느 한 항에 있어서,형광체를 제조한 후, 추가로 상기 형광체를 산처리하는 형광체의 제조 방법.
- 일반식 : CaX(M2)Y(Si)12-(m+n)(Al)m+n(O)n(N)16-n (단, M2 는 Ce, Pr, Eu, Tb, Yb 및 Er 에서 선택되는 1 종 이상의 원소이고, 0.3≤X+Y≤1.5, 0<Y≤0.7, 0.6≤m≤3.0, 0≤n≤1.5, X+Y=m/2) 로 나타나는 α 형 사이알론으로 이루어지는 분말상의 형광체를 유기 용매에 현탁시키고, 그 현탁액에 유기 금속 착물 또는 금속 알콕시드를 적하하고,형광체 입자 표면에 금속산화물 또는 수산화물의 피막을 형성하고, 공기중 또는 불활성가스 중에서 소성함으로써,형광체를 구성하는 α 형 사이알론의 입자의 적어도 일부 표면에, 두께 (10~180)/n (단위 : 나노미터, n : 투명막의 굴절률 (1.2~2.5)) 의 투명막을 형성하는 것을 특징으로 하는 형광체의 제조 방법.
- 일반식 : CaX(M2)Y(Si)12-(m+n)(Al)m+n(O)n(N)16-n (단, M2 는 Ce, Pr, Eu, Tb, Yb 및 Er 에서 선택된 1 종 이상의 원소이고, 0.3≤X+Y≤1.5, 0<Y≤0.7, 0.6≤m≤3.0, 0≤n≤1.5, X+Y=m/2) 으로 나타나는 α 형 사이알론으로 이루어지는 분말상의 형광체를 물에 현탁시키고, pH 를 일정하게 유지하면서 금속염 수용액을 적하하고,형광체 입자 표면에 금속산화물 또는 수산화물의 피막을 형성하고, 공기중 또는 불활성가스 중에서 소성함으로써,형광체를 구성하는 α 형 사이알론 입자의 적어도 일부 표면에 두께 (10~180)/n (단위 : 나노미터, n : 투명막의 굴절률 (1.2~2.5)) 의 투명막을 형성하는 것을 특징으로 하는 형광체의 제조 방법.
- 발광 광원과 형광체를 구성 요소로서 포함하고 있는 발광 소자에 있어서, 상기 형광체가 적어도 제 1 항, 제 3 항 또는 제 5 항 중 어느 한 항에 기재된 형광체인 것을 특징으로 하는 발광 소자.
- 제 22 항에 있어서,상기 발광 광원이 발광 파장의 최대 강도가 240~480㎚ 에 있는 LED 인 발광 소자.
- 제 23 항에 있어서,LED 와, 상기 형광체를, 굴절률 1.58~1.85 의 수지층에 매립하고, 그 수지층 표면을 굴절률 1.3~1.58 의 수지로 덮는 발광 소자.
- 제 22 항에 기재된 발광 소자를 사용한 조명 기구.
- 제 25 항에 있어서,100~500㎚ 의 파장을 갖는 자외선 또는 가시광을 여기원으로 하여 조사함으로써 500~550㎚ 의 범위의 파장에 피크를 갖는 발광 특성을 갖는 형광체가 사용되 고 있는 조명 기구.
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- 2006-02-28 CN CN200910208339A patent/CN101712868A/zh active Pending
- 2006-02-28 CN CN200910208341A patent/CN101712870A/zh active Pending
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JP2004238506A (ja) * | 2003-02-06 | 2004-08-26 | Ube Ind Ltd | サイアロン系酸窒化物蛍光体およびその製造方法 |
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TWI411660B (zh) | 2013-10-11 |
KR20070106507A (ko) | 2007-11-01 |
WO2006093135A1 (ja) | 2006-09-08 |
EP1854864A1 (en) | 2007-11-14 |
EP1854864A4 (en) | 2010-10-06 |
US20090021141A1 (en) | 2009-01-22 |
CN101712869A (zh) | 2010-05-26 |
US8125139B2 (en) | 2012-02-28 |
EP1854864B1 (en) | 2012-11-21 |
CN102585810A (zh) | 2012-07-18 |
CN101982891A (zh) | 2011-03-02 |
TW200643148A (en) | 2006-12-16 |
CN101712869B (zh) | 2013-04-10 |
CN101712868A (zh) | 2010-05-26 |
CN101712870A (zh) | 2010-05-26 |
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