JP2008544553A - 短波長ledとダウンコンバージョン物質で白色光を生成するパッケージ設計 - Google Patents
短波長ledとダウンコンバージョン物質で白色光を生成するパッケージ設計 Download PDFInfo
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Abstract
Description
本出願は、2005年6月23日に出願された米国特許仮出願No. 60/693,170及び2005年7月12日に出願された米国特許仮出願No. 60/698,591の優先権を主張するものであり、それぞれの内容は参照によって本明細書に組み込まれる。
本発明は、固体白色光放出デバイスに関する。特に、これらのデバイス及び方法は短波長光源を蛍光体及び量子ドット・ダウンコンバージョン物質と共に用いる。
Claims (36)
- 黒体軌跡に近い色度値を有しかつ演色評価数が約80より大きい可視光を生成する方法であって、該可視光は短波長固体発光デバイス、量子ドット物質、及び蛍光体物質を用いて生成され、該方法は:
a) 該短波長固体発光デバイスを用いて第一のピーク波長を含む第一のスペクトルを有する短波長光を発生するステップ、該第一のピーク波長は約500nmよりも短い;
b) 該量子ドット物質を該短波長光の少なくとも一部分によって照射し、該短波長光の第一の分画が該量子ドット物質によって吸収され、第二のピーク波長を含む第二のスペクトルを有する長波長光として再放出されるようにするステップ、該第二のピーク波長は約600nmよりも長い;
c) 該蛍光体物質を該短波長光の少なくとも一部分によって照射し、該短波長光の第二の分画が該蛍光体物質によって吸収され、第三のピーク波長を含む第三のスペクトルを有する中波長光として再放出されるようにするステップ、該第三のピーク波長は該第一のピーク波長と該第二のピーク波長の間にある;及び
d) 該短波長光の第三の分画、中波長光の少なくとも一部分、及び長波長光の少なくとも一部分を可視光として放出するステップ;
を含む方法。 - ステップ(d)で放出される該可視光の色度値が、CIE-1931ダイアグラム上で黒体軌跡のx色度値の約0.01及びy色度値の約0.01で限られる区域内にあることを特徴とする請求項1に記載の方法。
- ステップ(d)で放出される該可視光の演色評価数が約85より大きいことを特徴とする請求項1に記載の方法。
- ステップ(d)で放出される該可視光の演色評価数が約90より大きいことを特徴とする請求項1に記載の方法。
- ステップ(d)で放出される該可視光の相関色温度が約1000K〜約16000Kより小さいことを特徴とする請求項1に記載の方法。
- ステップ(d)で放出される該可視光の相関色温度が約3300K〜約3600Kにあることを特徴とする請求項1に記載の方法。
- ステップ(a)で該短波長固体発光デバイスによって発生される短波長光の該第一のピーク波長が約200nm〜約500nmにあることを特徴とする請求項1に記載の方法。
- ステップ(b)で該量子ドット物質によって放出される長波長光の該第二のピーク波長が約600nm〜約700nmにあることを特徴とする請求項1に記載の方法。
- ステップ(b)で該量子ドット物質によって放出される長波長光の該第二のスペクトルの半値全幅が約50nmより小さいことを特徴とする請求項1に記載の方法。
- ステップ(b)がさらに、該中波長光の少なくとも一部分によって該量子ドット物質を照射し、該中波長光の第四の分画が該量子ドット物質によって吸収され、追加の長波長光として再放出されるようにするステップを含むことを特徴とする請求項1に記載の方法。
- ステップ(c)で該蛍光体物質によって放出される中波長光の該第三のピーク波長が約500nm〜約600nmにあることを特徴とする請求項1に記載の方法。
- ステップ(c)で該蛍光体物質によって放出される中波長光の該第三のスペクトルの半値全幅が約150nmより小さいことを特徴とする請求項1に記載の方法。
- 広帯域幅光源であって:
第一のピーク波長を含む第一のスペクトルを有する短波長光を発生する短波長固体発光デバイス、該第一のピーク波長は約500nmより短い;
該短波長固体発光デバイスと光学的に結合され、該短波長光の第一の部分によって照射される量子ドット物質であって、該第一のスペクトルを有する入射光の第一の分画を吸収し、吸収された光を第二のピーク波長を含む第二のスペクトルを有する長波長光として再放出するようになっている量子ドット物質、該第二のピーク波長は約600nmより長い;及び
該短波長固体発光デバイスと光学的に結合され、該短波長光の第二の部分によって照射される蛍光体物質であって、該第一のスペクトルを有する入射光の第二の分画を吸収し、吸収された光を第三のピーク波長を含む第三のスペクトルを有する中波長光として再放出するようになっている蛍光体物質、該第三のピーク波長は該第一のピーク波長と該第二のピーク波長の間にある;
を含み、該短波長固体発光デバイス、該量子ドット物質、及び該蛍光体物質は、第一の量の短波長光、第二の量の長波長光、及び第三の量の中波長光が実質的に同時に該広帯域幅光源から黒体軌跡に近い色度値を有しかつ演色評価数が80より大きい可視光として放出されるように構成されることを特徴とする広帯域幅光源。 - 該短波長固体発光デバイスが、短波長発光ダイオード(LED)、短波長共振器型LED、又は短波長ダイオード・レーザーのいずれかであることを特徴とする請求項13に記載の広帯域幅光源。
- 該短波長固体発光デバイスによって発生される該短波長光の該第一のピーク波長が約200nm〜約500nmにあることを特徴とする請求項13に記載の広帯域幅光源。
- 該短波長固体発光デバイスによって発生される該短波長光の該第一のスペクトルの半値全幅が約50nmより小さいことを特徴とする請求項13に記載の広帯域幅光源。
- 該量子ドット物質が、可視光を実質的に透過するマトリクス物質内に分散された複数の量子ドットを含むことを特徴とする請求項13に記載の広帯域幅光源。
- 該複数の量子ドットが、CdSe量子ドット、ZnS量子ドット、CdTe量子ドット、PbTe量子ドット、ZnSe量子ドット、Si量子ドット、Ge量子ドット、又はPbSe量子ドットの少なくとも一つを含むことを特徴とする請求項17に記載の広帯域幅光源。
- 該マトリクス物質が、UV硬化性透明樹脂、熱硬化性ゾル−ゲル樹脂、UV硬化性ゾル−ゲル樹脂、ポリカーボネート、ポリスチレン、ポリメチル・メタクリレート(PMMA)、ポリエチレン、エポキシ、シリコーン、シリカ、又はチタニアの少なくとも一つを含むことを特徴とする請求項17に記載の広帯域幅光源。
- 該量子ドット物質によって放出される長波長光の該第二のピーク波長が約600nm〜約700nmにあることを特徴とする請求項13に記載の広帯域幅光源。
- 該量子ドット物質によって発生される長波長光の該第二のスペクトルの半値全幅が約50nmより小さいことを特徴とする請求項13に記載の広帯域幅光源。
- 該量子ドット物質がさらに該蛍光体物質と光学的に結合されて、該中波長光の一部分によって照射され;
該量子ドット物質がさらに該第三のスペクトルを有する入射光の第三の分画を吸収するようになっている;
ことを特徴とする請求項13に記載の広帯域幅光源。 - 該蛍光体物質が照射される該短波長光の該第二の部分が該蛍光体物質に入射する前に該量子ドット物質を透過するように該量子ドット物質が該広帯域幅光源内に配置されていることを特徴とする請求項22に記載の広帯域幅光源。
- 該蛍光体物質は、該可視光を実質的に透過するマトリクス物質内に分散された複数の蛍光体粒子を含むことを特徴とする請求項13に記載の広帯域幅光源。
- 該複数の蛍光体粒子は、ZnS:Cu-Al; ZnSiO4:Mn2+; Sr3SiO5:Eu2+; BaMgAl10O17: Eu2+Mn2+; SrAlO4:Eu, Dy; (YGdCe)3Al5O12:Eu; YAG:Ce; Sr4Al14O25:Eu; (Ce, Tb)MgAl11O19; YAG:Ce; 又は(La, Ce, Tb)PO4の少なくとも一つを含むことを特徴とする請求項24に記載の広帯域幅光源。
- 該マトリクス物質は、UV硬化性透明樹脂、熱硬化性ゾル−ゲル樹脂、UV硬化性ゾル−ゲル樹脂、ポリカーボネート、ポリスチレン、ポリメチルメタクリレート(PMMA)、ポリエチレン、エポキシ、シリコーン、シリカ、又はチタニアの少なくとも一つを含むことを特徴とする請求項24に記載の広帯域幅光源。
- 該蛍光体物質は、バルクZnS:Cu-Al; バルクZnSiO4:Mn2+; バルクSr3SiO5:Eu2+; バルクBaMgAl10O17:Eu2+Mn2+; バルクSrAlO4:Eu, Dy; バルク(YGdCe)3Al5O12:Eu;バルクSr4Al14O25:Eu; バルク(Ce, Tb)MgAl11O19; 又はバルク(La, Ce, Tb)PO4の少なくとも一つを含むことを特徴とする請求項13に記載の広帯域幅光源。
- 該蛍光体物質によって放出される該中波長光の該第三のピーク波長が約500nm〜約600nmにあることを特徴とする請求項13に記載の広帯域幅光源。
- 該蛍光体物質によって放出される中波長光の該第三のスペクトルの半値全幅が約150nmより小さいことを特徴とする請求項13に記載の広帯域幅光源。
- 該量子ドット物質が複数の量子ドットを含み;
該蛍光体物質が複数の蛍光体粒子を含み;
該複数の量子ドットと該複数の蛍光体粒子が該可視光を実質的に透過するマトリクス物質内に混合して分散されていることを特徴とする請求項13に記載の広帯域幅光源。 - 該短波長固体発光デバイス、該量子ドット物質、及び該蛍光体物質は、該広帯域幅光源から放出される該可視光の色度値が、CIE-1931ダイアグラム上で黒体軌跡のx色度値の約0.01及びy色度値の約0.01で限られる区域内にあるように構成されることを特徴とする請求項13に記載の広帯域幅光源。
- 該短波長固体発光デバイス、該量子ドット物質、及び該蛍光体物質は、該広帯域幅光源から放出される該可視光の演色評価数が約85より大きくなるように構成されることを特徴とする請求項13に記載の広帯域幅光源。
- 該短波長固体発光デバイス、該量子ドット物質、及び該蛍光体物質は、該広帯域幅光源から放出される該可視光の演色評価数が約90より大きくなるように構成されることを特徴とする請求項2に記載の広帯域幅光源。
- 該短波長固体発光デバイス、該量子ドット物質、及び該蛍光体物質は、該広帯域幅光源から放出される該可視光の演色評価数が約1000K〜約16000Kの相関色温度を有するように構成されることを特徴とする請求項13に記載の広帯域幅光源。
- 該短波長固体発光デバイス、該量子ドット物質、及び該蛍光体物質は、該広帯域幅光源から放出される該可視光の演色評価数が約3300K〜約3600Kの相関色温度を有するように構成されることを特徴とする請求項13に記載の広帯域幅光源。
- 黒体軌跡に近い色度値を有しかつ演色評価数が約80より大きい可視光を生成する広帯域幅光源であって、該広帯域幅光源が:
第一のピーク波長を含む第一のスペクトルを有する短波長光を発生する手段、該第一のピーク波長は約500nmよりも短い;
該短波長光の第一の分画を吸収し、第二のピーク波長を含む第二のスペクトルを有する長波長光として再放出する手段、該第二のピーク波長は約600nmよりも長い;及び
該短波長光の第二の分画を吸収し、第三のピーク波長を含む第三のスペクトルを有する中波長光として再放出する手段、該第三のピーク波長は該第一のピーク波長と該第二のピーク波長の間にある;
を含み、該短波長光の第三の分画、中波長光の少なくとも一部分、及び長波長光の少なくとも一部分が可視光として放出されることを特徴とする広帯域幅光源。
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Publication number | Publication date |
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CN101138104A (zh) | 2008-03-05 |
JP2013153191A (ja) | 2013-08-08 |
CA2597697C (en) | 2014-12-02 |
AU2006262152B2 (en) | 2011-04-21 |
WO2007002234A1 (en) | 2007-01-04 |
JP5934130B2 (ja) | 2016-06-15 |
AU2006262152A1 (en) | 2007-01-04 |
KR20080026529A (ko) | 2008-03-25 |
BRPI0613822A2 (pt) | 2011-02-15 |
US20080105887A1 (en) | 2008-05-08 |
KR101266130B1 (ko) | 2013-05-27 |
CA2597697A1 (en) | 2007-01-04 |
EP1894257A1 (en) | 2008-03-05 |
US7750359B2 (en) | 2010-07-06 |
CN101138104B (zh) | 2011-08-24 |
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