KR20100009577A - 형광체 및 그의 제조 방법, 및 그것을 사용한 발광 장치 - Google Patents
형광체 및 그의 제조 방법, 및 그것을 사용한 발광 장치 Download PDFInfo
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- KR20100009577A KR20100009577A KR1020097024241A KR20097024241A KR20100009577A KR 20100009577 A KR20100009577 A KR 20100009577A KR 1020097024241 A KR1020097024241 A KR 1020097024241A KR 20097024241 A KR20097024241 A KR 20097024241A KR 20100009577 A KR20100009577 A KR 20100009577A
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- phosphor
- powder
- sialon
- light emitting
- light
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Images
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Abstract
Description
Claims (37)
- M(0) 원소(단, M(0)은 Sr, La로부터 선택되는 1종 또는 2종의 원소임)와, M(1) 원소(단, M(1)은 Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb로부터 선택되는 1종 이상의 원소임)와, Si와, Al과, 질소를 적어도 포함하고, α형 질화규소 결정과 동일한 결정 구조를 갖고, α형 사이알론 결정 구조를 포함하는 형광체.
- 제1항에 있어서, 산소를 더 포함하는 것을 특징으로 하는 형광체.
- 제1항 또는 제2항에 있어서, M(2) 원소(단, M(2)는 Li, Na, Be, Mg, Ca, Ba, Sc, Y, Gd, Lu로부터 선택되는 1종 이상의 원소임)를 더 포함하는 것을 특징으로 하는 형광체.
- 제1항 또는 제2항에 있어서, 상기 형광체는, 하기 조성식으로 나타내어지는 조성인 것을 특징으로 하는 형광체.M(0)xM(1)yM(2)zSi12-(m+n)Al(m+n)OnN16-n[단, 조성비를 나타내는 x, y, z는 0.01≤x≤4, 0.001<y≤2, 0≤z≤2이고, 조성비를 나타내는 m, n은 me=xㆍv(0)+yㆍv(1)+zㆍv(2)(단, v(0)은 M(0) 이온의 가수이고, v(1)은 M(1) 이온의 가수이고, v(2)는 M(2) 이온의 가수임)로 하였을 때, 0.8ㆍme≤m≤1.2ㆍme, 0≤n<4임]
- M(0) 원소(단, M(0)은 Sr, La로부터 선택되는 1종 또는 2종의 원소임)와 M(1) 원소(단, M(1)은 Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb로부터 선택되는 1종 이상의 원소임)와, Si와, Al과, 질소를 적어도 포함하고, α형 질화규소 결정과 동일한 결정 구조를 갖고, α형 사이알론 결정 구조를 포함하는 형광체이며,상기 형광체는 α형 사이알론 분말로 구성되고, 상기 α형 사이알론 분말에 포함되는 산소량이, 하기 조성식에 기초하여 계산되는 값보다 0.4질량% 이하의 범위에서 많은 것을 특징으로 하는 형광체.M(0)xM(1)yM(2)zSi12-(m+n)Al(m+n)OnN16-n[단, 조성비를 나타내는 x, y, z는 0.01≤x≤4, 0.001<y≤2, 0≤z≤2이고, 조성비를 나타내는 m, n은 me=xㆍv(0)+yㆍv(1)+zㆍv(2)(단, v(0)은 M(0) 이온의 가수이고, v(1)은 M(1) 이온의 가수이고, v(2)는 M(2) 이온의 가수임)로 하였을 때, 0.8ㆍme≤m≤1.2ㆍme, 0≤n<4임]
- 제1항 또는 제5항에 있어서, 0.05≤x≤2인 것을 특징으로 하는 형광체.
- 제1항 또는 제5항에 있어서, 0.001≤y≤1.2인 것을 특징으로 하는 형광체.
- 제1항 또는 제5항에 있어서, 0≤n≤1.5인 것을 특징으로 하는 형광체.
- 제1항 또는 제5항에 있어서, n=me인 것을 특징으로 하는 형광체.
- 제1항 또는 제5항에 있어서, Cu의 Kα선을 사용한 분말 X선 회절 측정에 의해 측정한 경우의 α-사이알론의 함유율이 90질량% 이상이며, 잔량부가 β-사이알론, 미반응의 질화규소, 산질화물 유리, SrSi6N8로부터 선택되는 1종인 것을 특징으로 하는 형광체.
- 제1항 또는 제5항에 있어서, 상기 형광체가 평균 입경 0.1㎛ 이상 50㎛ 이하의 분체인 것을 특징으로 하는 형광체.
- 제11항에 있어서, 상기 형광체를 구성하는 1차 입자의 평균 어스펙트비가 3 이하인 것을 특징으로 하는 형광체.
- 제1항 또는 제5항에 있어서, 상기 형광체는 불소를 5 내지 300ppm 함유하는 것을 특징으로 하는 형광체.
- 제1항 또는 제5항에 있어서, 상기 형광체는 붕소를 10 내지 3000ppm 함유하는 것을 특징으로 하는 형광체.
- M(0) 원소(단, M(0)은 Sr, La로부터 선택되는 1종 또는 2종의 원소임)와, M(1) 원소(단, M(1)은 Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb로부터 선택되는 1종 이상의 원소임)와, Si와, Al과, 질소를 적어도 포함하고, α형 질화규소 결정과 동일한 결정 구조를 갖는, α형 사이알론 결정을 갖는 형광체의 제조 방법이며,M(여기서, M은 Sr, M(1)을 포함하는 원소군 중에서 II가의 가수를 취하는 원소로부터 선택되는 1종 이상임)을 함유하는 화합물로서, MSiN2, M2Si5N8, M3Al2N4, MSi6N8로부터 선택되는 1종 이상의 원료를 적어도 출발 원료로 하는 형광체의 제조 방법.
- Sr과, M(1) 원소(단, M(1)은 Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb로부터 선택되는 1종 이상의 원소임)와, Si와, Al과, 질소를 적어도 포함하고, α형 질화규소 결정과 동일한 결정 구조를 갖는, α형 사이알론 결정 구조를 갖는 형광체의 제조 방법이며,M(여기서, M은 Sr, M(1)을 포함하는 원소군 중에서 II가의 가수를 취하는 원소로부터 선택되는 1종 이상임)을 함유하는 화합물로서, MSiN2, M2Si5N8, M3Al2N4, MSi6N8로부터 선택되는 1종 이상의 원료를 적어도 출발 원료로서 준비하는 공정과, 상기 원료를 혼련하여 원료 혼합물을 만드는 공정과, 상기 원료 혼합물의 성형체를 만드는 공정과, 상기 성형체를 소성하는 공정과, 상기 소성된 성형체를 열처리하는 공정을 구비하는 형광체의 제조 방법.
- 제15항 또는 제16항에 있어서, 산소를 더 함유시키는 것을 특징으로 하는 형광체의 제조 방법.
- 제15항 또는 제16항에 있어서, M(2) 원소(단, M(2)는 Li, Na, Be, Mg, Ca, Ba, Sc, Y, Gd, Lu로부터 선택되는 1종 이상의 원소임)를 더 함유시킬 때에, Li를 함유하는 화합물로서, LiSi2N3을 출발 원료로서 포함하는 것을 특징으로 하는 형광체의 제조 방법.
- 제16항에 있어서, 종자로서 미리 합성한 목적하는 조성을 갖는 형광체 분말을 상기 원료 혼합물에 첨가하여 이루어지는 것을 특징으로 하는 형광체의 제조 방법.
- 제16항에 있어서, 상기 소성된 형광체의 덩어리를, 알루미나, 질화규소 또는 α-사이알론제의 분쇄 매체 혹은 라이닝재를 포함하는 분쇄 장치를 사용하여 평균 입경이 20㎛ 이하가 될 때까지 분쇄하는 공정을 더 구비하는 것을 특징으로 하는 형광체의 제조 방법.
- 제16항에 있어서, 상기 원료 혼합물을 분무 건조함으로써 원료 분말의 응집체의 입경을 정돈하는 조립 공정을 더 구비하는 것을 특징으로 하는 형광체의 제조 방법.
- 제16항에 있어서, 상기 혼련 공정은, 습식 밀에 의해 원료 분말을 용매와 함께 혼련하는 것을 특징으로 하는 형광체의 제조 방법.
- 제16항에 있어서, 상기 소성 공정은, 0.1㎫ 이상 100㎫ 이하의 압력의 질소 분위기 중에 있어서 1500℃ 이상 2200℃ 이하의 온도 범위에서 행하는 것을 특징으로 하는 형광체의 제조 방법.
- 제16항에 있어서, 상기 소성 공정은, 탄소 혹은 탄소 함유 화합물의 공존하에서 행하는 것을 특징으로 하는 형광체의 제조 방법.
- 제16항에 있어서, 상기 소성 공정은, 벌크 밀도 40% 이하의 충전율로 유지한 상태에서 행하는 것을 특징으로 하는 형광체의 제조 방법.
- 제16항에 있어서, 상기 소성 공정은, 원료 혼합물의 벌크 체적과 사용하는 용기의 체적의 비율로서 20체적% 이상의 충전율로 유지한 상태에서 행하는 것을 특징으로 하는 형광체의 제조 방법.
- 제26항에 있어서, 상기 소성 공정은, 응집체 분말 용기에 수용하여 소성하는 것을 특징으로 하는 형광체의 제조 방법.
- 제16항에 있어서, 상기 열처리 공정은 질소, 암모니아, 수소로부터 선택되는 1종 또는 2종 이상의 분위기 중, 600℃ 이상 2200℃ 이하의 온도에서 행하는 것을 특징으로 하는 형광체의 제조 방법.
- 제1항 또는 제5항에 기재된 형광체를 구성하는 α-사이알론 입자의 적어도 일부 표면에, 두께 (10 내지 180)/n(단위: 나노미터)의 투명막을 갖고, 여기서 n은 투명막의 굴절률로 1.2 내지 2.5인 형광체.
- 제29항에 있어서, 상기 투명막의 굴절률이 1.5 이상 2.0 이하인 것을 특징으로 하는 형광체.
- M(0) 원소(단, M(0)은 Sr, La로부터 선택되는 1종 또는 2종의 원소임)와, M(1) 원소(단, M(1)은 Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb로부터 선 택되는 1종 이상의 원소임)와, Si와, Al과, 질소를 적어도 포함하고, α형 질화규소 결정과 동일한 결정 구조를 갖고, α형 사이알론 결정 구조를 갖는 형광체를 유기 용매에 현탁시켜, 유기 금속 착체 또는 금속 알콕시드를 적하하여 α형 사이알론 입자의 적어도 일부 표면에 두께 (10 내지 180)/n(단위: 나노미터)의 투명막을 형성하고, 여기서 n은 투명막의 굴절률로 1.2 내지 2.5인 것을 특징으로 하는 형광체의 제조 방법.
- M(0) 원소(단, M(0)은 Sr, La로부터 선택되는 1종 또는 2종의 원소임)와, M(1) 원소(단, M(1)은 Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb로부터 선택되는 1종 이상의 원소임)와, Si와, Al과, 질소를 적어도 포함하고, α형 질화규소 결정과 동일한 결정 구조를 갖고, α형 사이알론 결정 구조를 갖는 형광체를 물에 현탁시켜, pH를 일정하게 유지하면서 금속염 수용액을 적하하여, α형 사이알론 입자의 적어도 일부 표면에 두께 (10 내지 180)/n(단위: 나노미터)의 투명막을 형성하고, 여기서 n은 투명막의 굴절률로 1.2 내지 2.5인 것을 특징으로 하는 형광체의 제조 방법.
- 발광 광원과 형광체로 구성되는 발광 장치이며,제1항 또는 제5항에 기재된 형광체, 또는 제29항에 기재된 형광체를 사용하는 것을 특징으로 하는 발광 장치.
- 발광 광원과 형광체로 구성되는 발광 장치이며,제1항 또는 제5항에 기재된 형광체, 또는 제29항에 기재된 형광체와, CaAlSiN3:Eu를 사용하는 것을 특징으로 하는 발광 장치.
- 제33항에 있어서, 상기 발광 광원이 330 내지 500㎚의 파장의 광을 발하는 LED, 무기 EL, 유기 EL 중 어느 하나인 것을 특징으로 하는 발광 장치.
- 제34항에 있어서, 상기 발광 광원이 330 내지 500㎚의 파장의 광을 발하는 LED, 무기 EL, 유기 EL 중 어느 하나인 것을 특징으로 하는 발광 장치.
- 제1항 또는 제5항에 기재된 형광체, 또는 제29항에 기재된 형광체와, 발광 파장의 최대 강도가 330 내지 500㎚에 있는 LED를 구성 요소로서 구비하는 것을 특징으로 하는 발광 장치.
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JP4512869B2 (ja) | 2005-02-28 | 2010-07-28 | 電気化学工業株式会社 | 蛍光体とその製造方法、およびそれを用いた発光素子 |
US20060264314A1 (en) * | 2005-03-14 | 2006-11-23 | Diamorph Ceramic Ab | Group of alpha-sialon compositions and a method for the production thereof |
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TWI266563B (en) * | 2005-08-12 | 2006-11-11 | Epistar Corp | Compound, phosphor composition and light-emitting device containing the same |
JP4769132B2 (ja) * | 2005-11-30 | 2011-09-07 | シャープ株式会社 | 発光装置 |
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Cited By (2)
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US9120973B2 (en) | 2011-02-14 | 2015-09-01 | Samsung Electronics Co., Ltd. | Fluorescent substance and a production method therefor |
KR20150086274A (ko) * | 2012-11-13 | 2015-07-27 | 덴끼 가가꾸 고교 가부시키가이샤 | 형광체, 발광소자 및 조명장치 |
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CN101755030A (zh) | 2010-06-23 |
EP2163595B1 (en) | 2018-07-11 |
KR101109988B1 (ko) | 2012-03-14 |
WO2008146571A1 (ja) | 2008-12-04 |
US8513876B2 (en) | 2013-08-20 |
JP2009256558A (ja) | 2009-11-05 |
JP5594620B2 (ja) | 2014-09-24 |
CN101755030B (zh) | 2014-05-14 |
US20100164367A1 (en) | 2010-07-01 |
EP2163595A1 (en) | 2010-03-17 |
EP2163595A4 (en) | 2010-09-29 |
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