JP2018506079A - ダウンコンバージョンフィルム要素 - Google Patents
ダウンコンバージョンフィルム要素 Download PDFInfo
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
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- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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Abstract
Description
本実施例で使用する材料は、以下を含んでいた。
量子ドットディスプレイを以下のようにモデル化した。MATLABソフトウェアパッケージ(MathWorks(Natick,MA)から入手可能)及び参照により本明細書に組み込まれるWO2014/123724(Benoitら)の実施例に記載の方法を使用し、ディスプレイシステムのコンピュータモデルを調製した。システムの原色光源は、青色LEDであった。青色LEDは、赤色及び緑色発光量子ドットからなるダウンコンバージョンフィルム、又は緑色蛍光体及び赤色量子ドットを含有するハイブリッド構造体を照光した。LED及び蛍光発光体(量子ドット又は蛍光体のいずれか)は、固有の半値全幅(FWHM)によって特徴付けられた。青色LEDでは、FHWMは445nmで18nmであった。緑色及び赤色量子ドットでは、FWHM値は、535nm及び625nmでそれぞれ34nm及び39nmであった。
色域は、システム効率を犠牲にして得られる。このトレードオフは、LCD技術に固有であるが、量子ドットのような狭い発光源の使用により改善することができる。これは、以下の計算例で実証された。
量子ドットディスプレイを以下のようにモデル化した。MATLABソフトウェアパッケージ(MathWorks(Natick,MA)から入手可能)及び参照により本明細書に組み込まれるWO2014/123724(Benoitら)の実施例に記載の方法を使用し、ディスプレイシステムのコンピュータモデルを調製した。システムの原色光源は、青色LEDであった。青色LEDは、赤色及び緑色発光量子ドットからなるダウンコンバージョンフィルム、又は緑色量子ドット及び赤色蛍光体を含有するハイブリッド構造体を照光した。LED及び蛍光発光体(量子ドット又は蛍光体のいずれか)は、固有の半値全幅(FWHM)によって特徴付けられた。青色LEDでは、FHWMは445nmで18nmであった。
Claims (18)
- 量子ドット及び蛍光体を含むダウンコンバージョンフィルム要素であって、
(a)前記量子ドットが、615〜660nmの範囲でFWHMが50nm未満のピーク赤色波長を発光し、前記蛍光体が、515〜555nmの範囲でFWHMが80nm未満のピーク緑色波長を発光し、75%以上の内部蛍光量子収率を有する、又は
(b)前記量子ドットが、515〜555nmの範囲でFWHMが40nm未満のピーク緑色波長を発光し、前記蛍光体が、615〜645nmの範囲でFWHMが80nm未満のピーク赤色波長を発光し、75%以上の内部蛍光量子収率を有する、のいずれかであるダウンコンバージョンフィルム要素。 - フィルムが、615〜660nmの範囲でFWHMが50nm未満のピーク赤色波長を発光する量子ドットと、515〜555nmの範囲でFWHMが80nm未満のピーク緑色波長を発光し、75%以上の内部蛍光量子収率を有する蛍光体とを含む、請求項1に記載のダウンコンバージョンフィルム要素。
- 前記蛍光体が、ユーロピウムドープオルトケイ酸塩、ユーロピウムドープストロンチウムチオガリウム酸塩、ユーロピウム及びマンガンドープバリウムマグネシウムアルミニウムオキシド、希土類ドープニトリドケイ酸塩及びこれらの組み合わせからなる群から選択される、請求項2に記載のダウンコンバージョンフィルム要素。
- フィルムが、515〜555nmの範囲でFWHMが40nm未満のピーク緑色波長を発光する量子ドットと、615〜645nmの範囲でFWHMが80nm未満のピーク赤色波長を発光し、75%以上の内部蛍光量子収率を有する蛍光体とを含む、請求項1に記載のダウンコンバージョンフィルム要素。
- 前記蛍光体が、Mn(+4)ドープ蛍光体、ユーロピウムドープ硫化カルシウム、ユーロピウム(+3)ドープ蛍光体及びこれらの組み合わせからなる群から選択される、請求項4に記載のダウンコンバージョンフィルム要素。
- 前記フィルムが、200pm未満のカドミウムを含む、請求項1〜5のいずれか一項に記載のダウンコンバージョンフィルム要素。
- 前記フィルムが、100ppm未満のカドミウムを含む、請求項6に記載のダウンコンバージョンフィルム要素。
- 前記フィルムが、75ppm未満のカドミウムを含む、請求項7に記載のダウンコンバージョンフィルム要素。
- (a)440〜460nmの範囲の波長及び25nm未満のFWHMを有する青色光を発光する青色光源と、
(b)赤色、青色及び緑色のカラーフィルターのセットを備えた液晶ディスプレイ(LCD)パネルと、
(c)光学的に前記青色光源と前記LCDパネルとの間にある、請求項1〜8のいずれか一項に記載のダウンコンバージョンフィルム要素と
を備えた、光学構造体。 - 前記LCDパネルが、35%〜45%NTSCの範囲のネイティブ色域を有し、前記光学構造体が、少なくとも50%NTSCの色域を実現する、請求項9に記載の光学構造体。
- 前記LCDパネルが、45%〜55%NTSCの範囲のネイティブ色域を有し、前記光学構造体が、少なくとも60%NTSCの色域を実現する、請求項9に記載の光学構造体。
- 前記LCDパネルが、55%〜65%NTSCの範囲のネイティブ色域を有し、前記光学構造体が、少なくとも70%NTSCの色域を実現する、請求項9に記載の光学構造体。
- 前記LCDパネルが、65%〜75%NTSCの範囲のネイティブ色域を有し、前記光学構造体が、少なくとも80%NTSCの色域を実現する、請求項9に記載の光学構造体。
- 前記LCDパネルが、75%〜85%NTSCの範囲のネイティブ色域を有し、前記光学構造体が、少なくとも90%NTSCの色域を実現する、請求項9に記載の光学構造体。
- 前記LCDパネルが、85%〜95%NTSCの範囲のネイティブ色域を有し、前記光学構造体が、少なくとも100%NTSCの色域を実現する、請求項9に記載の光学構造体。
- 光学的に前記ダウンコンバージョンフィルム要素と前記LCDパネルとの間にある光リサイクル要素を更に備えた、請求項9〜15のいずれか一項に記載の光学構造体。
- (a)440〜460nmの範囲の波長及び25nm未満のFWHMを有する青色光を発光する青色光源と、
(b)前記青色光源に光学的に結合するように適合された光学部品と、
(c)前記光学部品に隣接して配置された、請求項1〜8のいずれか一項に記載のダウンコンバージョンフィルム要素と
を備えた、照明器具。 - 前記光学部品が光ガイドである、請求項17に記載の照明器具。
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KR20170096173A (ko) | 2017-08-23 |
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