JP2014500214A - Led照明用途のための蛍光体含有ガラスフリット材料 - Google Patents
Led照明用途のための蛍光体含有ガラスフリット材料 Download PDFInfo
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- 239000011521 glass Substances 0.000 title claims abstract description 199
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 239000000463 material Substances 0.000 title abstract description 50
- 239000000203 mixture Substances 0.000 claims abstract description 93
- 239000000758 substrate Substances 0.000 claims abstract description 58
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 20
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 20
- 238000010304 firing Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 9
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- 238000002844 melting Methods 0.000 claims description 3
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- 239000010410 layer Substances 0.000 description 64
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- 229910019990 cerium-doped yttrium aluminum garnet Inorganic materials 0.000 description 10
- 238000007650 screen-printing Methods 0.000 description 8
- 229910002601 GaN Inorganic materials 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
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- 239000000126 substance Substances 0.000 description 4
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
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- 230000007613 environmental effect Effects 0.000 description 2
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- 239000012530 fluid Substances 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- 229920002274 Nalgene Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
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- 238000000295 emission spectrum Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
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- 238000007873 sieving Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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- 239000002356 single layer Substances 0.000 description 1
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Abstract
Description
(1) 固結された蛍光体含有ガラス層および得られた装置全体は、被包材料としてシリコーンが使用された場合よりも、より熱ゆらぎ耐性である。
(2) 固結された蛍光体含有ガラス層は、良好な化学的安定性および環境安定性を有する。
(3) 固結された蛍光体含有層と、後方散乱を減少させるpn接合を含有する層との間の屈折率が良好に一致する。
(4) 様々な蛍光体を単層に組み合わせる可能性。
(5) 図10に示されるような、基板上に蛍光体の幾何パターンを製造する能力。
(6) 活性面への厚膜施用の適性。
(7) 実装されたLEDの色または白色点を制御する能力。蛍光体プレートは別個の部品として製造されるので、光学的厚さおよび発光色を、組立て前に測定することができ、それゆえ、不良品のLEDの数を減少させることができる。
表1は、ここに使用した蛍光体/フリット混合物のいくつかに使用した、モル%で表した、無鉛フリットガラスAの組成を示している。ガラスAは、コーニングコード2317ガラスである基板ガラスに適合する、84.3×10-7/℃の熱膨張係数および596℃の軟化点を有する。このフリットガラスAの組成物を6時間に亘り1500℃で白金坩堝内で溶融した。次いで、溶融ガラスを鋼製テーブル上に注ぎ、室温まで冷ました。冷却後、このガラスを、−400メッシュのサイズを有する粒子に粉砕した。次いで、この粉砕ガラスを使用して、表2に示された蛍光体材料を有するブレンドまたは混合物を作製した。表2のブレンドは、質量%基準で表されている。各ブレンドまたは混合物について材料を秤量した後、フリットガラス材料および蛍光体材料を、アルミナ媒質を含むNalgene(商標)または類似のボトルに入れ、15から40分の範囲の時間、一般に、約20分間に亘りロール処理(ミル処理)した。ロール処理後、ブレンドを−325メッシュのスクリーンに通して篩い分けした。ある場合には、ブレンドを湿式粉砕または凍結乾燥して、凝集塊を除去するのを助け、次いで、−325メッシュのスクリーンに通して篩い分けした。
選択したガラス組成物を提供する工程、
この組成物を溶融し、溶融した組成物をガラスに形成する工程、
溶融されたガラスを−400メッシュの粒子に粉砕し、それによって、選択した組成を有するフリットガラスを形成する工程、
粉砕されたガラスを1種類または複数の種類の選択した蛍光体とブレンドして、蛍光体とフリットガラスの混合物を形成する工程、
蛍光体とフリットガラスの混合物を15〜40分の範囲の時間に亘りミル処理する工程、
ミル処理された蛍光体とフリットガラスの混合物を−325メッシュスクリーンに通して篩い分けする工程、
ミル処理され篩い分けされた蛍光体とフリットガラスのブレンドを、このブレンドに少なくとも1種類の有機液体を添加することによって、ペーストに転化させる工程、
このペーストを基板表面に施す工程、
施されたペーストを空気中で、2℃/分の昇温速度で約350℃の温度に焼成し、このペーストを1時間に亘り約350℃に保持して、有機物質を焼き尽くす工程、
この施されたペーストを空気中で、2℃/分の昇温速度で575〜650℃の範囲の選択した温度にさらに焼成し、この施されたペーストを2時間に亘り選択した温度に保持する工程、および
焼成された蛍光体とフリットガラスを室温まで冷却して、基板表面に施された焼成済み蛍光体・フリットガラスを生じる工程、
を有してなる方法にも関する。様々な実施の形態において、前記フリットガラス組成物は、モル%で表して、
(a) 20〜24%のK2O、8〜12%のZnO、2〜6%のAl2O3、35〜41%のB2O3および22〜28%のSiO2;
(b) 22.5±1%のK2O、10±1%のZnO、4±0.5%のAl2O3、38.8±1%のB2O3および25±1.5%のSiO2;
(c) 72〜79%のPbO、8〜13%のAl2O3、8〜13%のB2O3、2〜5%のSiO2および0〜0.3%のSb2O3;
(d) 74.4±1%のPbO、10.6±0.6%のAl2O3、11±0.6%のB2O3、および3.8±0.5%のSiO2;および
(e) 76.4±1%のPbO、9±0.6%のAl2O3、11±0.6%のB2O3、3.2±0.5%のSiO2および0.08±0.05%のSb2O3;
からなる群より選択される。
(a) 20〜24%のK2O、8〜12%のZnO、2〜6%のAl2O3、35〜41%のB2O3および22〜28%のSiO2;
(b) 22.5±1%のK2O、10±1%のZnO、4±0.5%のAl2O3、38.8±1%のB2O3および25±1.5%のSiO2;
(c) 72〜79%のPbO、8〜13%のAl2O3、8〜13%のB2O3、2〜5%のSiO2および0〜0.3%のSb2O3;
(d) 74.4±1%のPbO、10.6±0.6%のAl2O3、11±0.6%のB2O3、および3.8±0.5%のSiO2;および
(e) 76.4±1%のPbO、9±0.6%のAl2O3、11±0.6%のB2O3、3.2±0.5%のSiO2および0.08±0.05%のSb2O3;
からなる群より選択される。
12,112 ワイヤボンド
14 蛍光体粒子
16 シリコーン材料
18,118 パッケージ基板
20 パッケージ
22,122 カップ
24 エポキシ樹脂レンズ
130 基板
Claims (5)
- 基板と、該基板に結合された蛍光体含有ガラス層を含むガラス物品であって、
前記蛍光体含有ガラス層がフリットガラスと少なくとも1種類の蛍光体との焼成混合物であり、
前記蛍光体含有ガラス層と前記基板のCTEが互いに±5×10-7/℃以内である、ガラス物品。 - 前記蛍光体含有ガラス層が無鉛であり、
前記フリットガラスと前記少なくとも1種類の蛍光体との間の屈折率差が0.20以下である、請求項1記載のガラス物品。 - 前記フリットガラスが、モル%で表して、20〜24%のK2O、8〜12%のZnO、2〜6%のAl2O3、35〜41%のB2O3および22〜28%のSiO2から実質的になる、請求項2記載のガラス物品。
- 前記蛍光体含有ガラス層が鉛含有層であり、
前記フリットガラスと前記少なくとも1種類の蛍光体との間の屈折率差が0.06以下である、請求項1記載のガラス物品。 - 基板と、該基板に結合された蛍光体含有ガラス層を含むガラス物品を製造する方法であって、
選択したガラス組成物を提供する工程、
前記組成物を溶融し、溶融した組成物をガラスに形成する工程、
形成された前記ガラスを−400メッシュの粒子に粉砕し、それによって、選択した組成を有するフリットガラスを形成する工程、
粉砕されたガラスを1種類または複数の種類の選択した蛍光体とブレンドして、蛍光体とフリットガラスの混合物を形成する工程、
前記蛍光体とフリットガラスの混合物を15〜40分の範囲の時間に亘りミル処理する工程、
ミル処理された前記蛍光体とフリットガラスの混合物を−325メッシュスクリーンに通して篩い分けする工程、
ミル処理され篩い分けされた前記蛍光体とフリットガラスの混合物を、該混合物に少なくとも1種類の有機液体を添加することによって、ペーストに転化させる工程、
前記ペーストを基板表面に施す工程、
施された前記ペーストを空気中で、2℃/分の昇温速度で約350℃の温度に焼成し、該ペーストを1時間に亘り約350℃に保持して、有機物質を焼き尽くす工程、
前記施されたペーストを空気中で、2℃/分の昇温速度で575〜650℃の範囲の選択した温度にさらに焼成し、該施されたペーストを2時間に亘り選択した温度に保持する工程、および
焼成された蛍光体・フリットガラスを室温まで冷却して、基板表面に施された焼成済み蛍光体・フリットガラスを生じる工程、
を有してなる方法。
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US40771010P | 2010-10-28 | 2010-10-28 | |
US61/407,710 | 2010-10-28 | ||
PCT/US2011/056503 WO2012058040A1 (en) | 2010-10-28 | 2011-10-17 | Phosphor containing glass frit materials for led lighting applications |
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JP2014500214A true JP2014500214A (ja) | 2014-01-09 |
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JP2013536658A Pending JP2014500214A (ja) | 2010-10-28 | 2011-10-17 | Led照明用途のための蛍光体含有ガラスフリット材料 |
Country Status (7)
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US (1) | US8822032B2 (ja) |
EP (1) | EP2632868A1 (ja) |
JP (1) | JP2014500214A (ja) |
KR (1) | KR20140009987A (ja) |
CN (1) | CN103189326B (ja) |
TW (1) | TW201219338A (ja) |
WO (1) | WO2012058040A1 (ja) |
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EP2632868A1 (en) | 2013-09-04 |
US8822032B2 (en) | 2014-09-02 |
TW201219338A (en) | 2012-05-16 |
CN103189326A (zh) | 2013-07-03 |
CN103189326B (zh) | 2015-12-02 |
KR20140009987A (ko) | 2014-01-23 |
US20120107622A1 (en) | 2012-05-03 |
WO2012058040A1 (en) | 2012-05-03 |
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