JP2017533473A - Lcベース光学ディスプレイシステム - Google Patents
Lcベース光学ディスプレイシステム Download PDFInfo
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- 229910017115 AlSb Inorganic materials 0.000 description 1
- 229910004613 CdTe Inorganic materials 0.000 description 1
- 229910005540 GaP Inorganic materials 0.000 description 1
- 229910005542 GaSb Inorganic materials 0.000 description 1
- -1 HgSe Inorganic materials 0.000 description 1
- 229910004262 HgTe Inorganic materials 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- 240000002329 Inga feuillei Species 0.000 description 1
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 description 1
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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
- 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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- G02F1/00—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
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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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- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
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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
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- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13712—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering the liquid crystal having negative dielectric anisotropy
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- G02F2202/36—Micro- or nanomaterials
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- G02F2203/01—Function characteristic transmissive
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Abstract
Description
液晶材料は、好ましくは、外部電場に応答してその配向を変化させるように構成される。さらに、液晶材料の配向の変化は、好ましくは、前記光学活性ナノロッドの整列軸の回転をもたらし、それにより光学活性ナノロッドによって吸収され、光学活性ナノロッドから放出される光の特性を変化させる。液晶材料の配向の変化は、ナノロッドからの光の放出の連続的な変化を提供することができる。
典型的には、光学活性構造は、ディスプレイ装置での使用のために構成され得ることに留意すべきである。
第1のポンピング波長範囲の光照射を提供するように構成されたポンピング光源と、
整列されたナノロッドおよびLC材料を含む光学活性構造であって、ナノロッドは、ポンピング光に応答して1以上の選択された第2の波長範囲の光を放出するように構成される、前記光学活性構造と、
外部場を提供し、それによってLC材料およびナノロッドの配向を局所的に変化させ、それによってナノロッドからの光放出を変調する電極装置であって;一般に、LCの配向における変化は、ナノロッドの配向の対応する変化を誘発し、それにより、ディスプレイ装置の所望の画素領域からの光放射を選択的に変調するように構成される、前記電極装置と、を含む。
1.液晶材料(LC)
2.異方性蛍光半導体ナノ構造(ナノロッド)を含む。
しかしながら、ナノ構造の液晶への挿入を可能にするおよび/または簡略化するために、リガンドおよび添加剤のような追加の成分を光学活性層に使用することができることに留意すべきである。
したがって、偏光子は、オフ状態で放出された非偏光光の約50%を遮断し、オン状態で放出された偏光光の大部分を伝搬するので、偏光子フィルタを使用するとコントラスト比をほぼ倍にすることができる。ただし、オフ状態の光放出は実質的に無視できる程度に構成されている。この効果は、画素領域内の比較的均質な液晶配向を利用したディスプレイ装置において最も重要であることにさらに留意されたい。これは、典型的には、画素領域のマルチドメイン型構成が、偏光子フィルタの使用に利益をもたらさない場合があるからである。
Claims (34)
- 所望の画像を生成するパターン化された照明を生成するように構成された光学活性構造を含むディスプレイシステムであって、光学活性構造は、ポンピングエネルギーに応答して所定の波長範囲の出力光を放出するように構成された光学活性ナノロッドを含む少なくとも1つの層、および液晶材料を含む、前記ディスプレイ装置。
- ディスプレイ装置が可視光に対して少なくとも部分的に透明である、請求項1に記載のディスプレイ装置。
- 前記少なくとも1つの層が、液晶材料の配向における変化が光学活性ナノロッドの配向における対応する変化をもたらすような前記光学活性ナノロッドおよび前記液晶材料の混合物を含む、請求項1または2に記載のディスプレイ装置。
- 前記光学活性ナノロッドが、第1の所定の波長範囲の光学ポンピングとなるポンピングエネルギーに応答するように構成されることで、1以上の第2の波長範囲の光を放出する、請求項1〜3のいずれか一項に記載のディスプレイ装置。
- 前記第1の波長範囲が、紫色光および紫外光波長の少なくとも1つを含み、前記1以上の第2の波長範囲は可視光を含む、請求項4に記載のディスプレイ装置。
- 前記光学活性構造が、前記液晶材料上に電場を選択的に印可するように構成された電極配置を含むことで、その配向における変化をもたらす、請求項1〜5のいずれか一項に記載のディスプレイ装置。
- 前記電極配置が、前記光学活性構造の別々に操作される複数の画素領域を画定する複数の電極要素を含む、請求項6に記載のディスプレイ装置。
- 前記光学活性ナノロッドが、2以上の種類のナノロッドを含み、各ナノロッドの種類は、所定の異なる波長範囲の光を放出するナノロッドの寸法および構造および組成に従って選択される、請求項1〜7のいずれか一項に記載のディスプレイ装置。
- 前記2以上の種類のナノロッドが、少なくとも3つの種類のナノロッドを含み、各種類は原色に応答した所定の波長範囲の光を放出するように選択される、請求項8に記載のディスプレイ装置。
- ディスプレイ装置が、第1の波長範囲の光学ポンピングの形態におけるポンピングエネルギーを提供するように構成されるポンピング光源を含むことで、前記光学活性ナノロッドが1以上の第2の波長範囲の光を放出することをもたらす、請求項1〜9のいずれか一項に記載のディスプレイ装置。
- 前記ポンピング光源が、前記光学活性構造から所定の距離に位置するように構成され、前記所定の距離が1センチメートルより大きい、請求項10に記載のディスプレイ装置。
- 不要な波長範囲の光を除去するように構成される少なくとも1つのフィルター層をさらに含む、請求項1〜11のいずれか一項に記載のディスプレイ装置。
- 前記フィルター層が、紫外照明の伝搬を遮断し、可視スペクトルの伝搬を許容するように構成される、請求項12に記載のディスプレイ装置。
- 前記液晶材料および前記光学活性構造の光学活性ナノロッドが、構造の特定の領域における前記液晶材料の配向における変化が前記領域における前記光学活性の回転の変化をもたらすように混合されることで、ポンピングエネルギーに応答して前記ナノロッドからの光学的放出を増加または低減させる、請求項1〜13のいずれか一項に記載のディスプレイ装置。
- 液晶材料および対応するナノロッドの配向の変化が、ナノロッドがその長軸に整列して光出力伝播の全体的な方向に平行になるオフ状態、およびナノロッドがその長軸に整列して前記少なくとも1つの層の表面に平行になりポンピングエネルギーに応答して光を放出するオン状態を提供する、請求項1〜14に記載のディスプレイ装置。
- 光学活性構造がさらに、液晶材料の配向に関連した1以上の中間状態を提供することで、1以上の画素領域からの光学的放出の1以上の中間レベルを可能にするように構成される、請求項15に記載のディスプレイ装置。
- 少なくとも1つの層を含む光学活性構造であって、該少なくとも1つの層は前記少なくとも1つの層内に共に混合される液晶材料および複数の光学活性ナノロッドを含み、液晶材料の1つの配向において、ナノロッドは、1以上の所定の第2の波長範囲の光を第1の強度レベルで放出することによって第1のポンピング波長範囲の入力放射に応答し、液晶材料の他の配向において、ナノロッドは、第2の強度レベルに低減される、前記光学活性構造。
- 光学活性ナノロッドが、前記少なくとも1つの第2の波長範囲の光を放出する組成および幾何学的形状を有するように構成される、請求項17に記載の光学活性構造。
- 液晶材料が、外部電場に応答してその配向を変化させるように構成され、したがって液晶材料の配向における変化が、前記光学活性ナノロッド回転をもたらすことで、ナノロッドによる光の放出を変化させる、請求項17または18に記載の光学活性構造。
- 前記液晶材料の配向における変化が、ナノロッドからの光放出の連続的な変化を提供する、請求項19に記載の光学活性構造。
- 光学活性ナノロッドにおける液晶材料が、1つの配向状態における構造の表面に平行な所定の軸に沿って整列し、他の配向状態における構造の表面に垂直な所定の軸に沿って整列するようにその配向を変化させる、請求項19または20に記載の光学活性構造。
- 液晶材料が、負の誘電異方性を有する、請求項17〜21のいずれか一項に記載の光学活性構造。
- 構造の複数の別々に操作可能な画素を画定する複数の電極要素を含む電極要素配置をさらに含み、前記電極要素配置の電極要素は、対応する画素に電場を選択的に印可することで、液晶材料および光学活性ナノロッドの回転をもたらすように構成される、請求項17〜22のいずれか一項に記載の光学活性構造。
- 2以上の種類の光学活性ナノロッドを含み、各種類は、他の種類のナノロッドの波長範囲と異なる選択された波長範囲における光学的放出を提供するように選択される材料組成および幾何学的形状を有する光学活性ナノロッドを含む、請求項17〜23のいずれか一項に記載の光学活性構造。
- 異なる種類の光学活性ナノロッドが、構造の複数の画素領域に配置されることで、放出光の空間選択的および一時的な変化によるカラー画像形成を可能にする、請求項24に記載の光学活性構造。
- 前記光学活性構造、液晶およびその光学活性ナノロッドが、可視スペクトルの光に光学的に部分的に透明になるように構成され、前記光学活性ナノロッドが、紫外(UV)または紫色照明を含む第1の波長範囲におけるポンピング光に応答して可視スペクトルの光を放出するように構成される、請求項17〜25のいずれか一項に記載の光学活性構造。
- 液晶材料が、ネマチック液晶材料を含む、請求項17〜26のいずれか一項に記載の光学活性構造。
- 前記液晶材料と物理的に接触して位置する少なくとも1つの配向層をさらに含み、前記少なくとも1つの配向層が、その静止状態において液晶材料を配向するように構成される、請求項17〜27のいずれか一項に記載の光学活性構造。
- 前記少なくとも1つの配向層が、ポリマー安定化垂直配向層を含む、請求項28に記載の光学活性構造。
- 構造の1以上の側で液晶材料およびナノロッド材料に物理的に接触して位置する1以上のドメインセパレータをさらに含むことで、液晶材料および対応するナノロッドのマルチドメイン整列を提供する、請求項17〜29のいずれか一項に記載の光学活性構造。
- ディスプレイ装置における使用のために構成された、請求項17〜30のいずれか一項に記載の光学活性構造。
- ディスプレイ装置であって、第1のポンピング波長範囲の光学照明を提供するように構成されるポンピング光源と、請求項17〜31のいずれか一項に記載の光学活性構造と、光学活性構造の所望の画素領域に電場を選択的に印可することで、ディスプレイ装置の所望の画素領域におけるナノロッドの光放出を変調するように構成される電極配置とを含む、前記ディスプレイ装置。
- ディスプレイ装置が、可視波長範囲の光に対して少なくとも部分的に透明である、請求項32に記載のディスプレイ装置。
- 装置とその背景から到達する光との間に位置するブロッキング/拡散層をさらに含み、ブロッキング/拡散要素は、装置の背景から到達する所定の波長範囲の光を選択的に遮断または拡散するように構成される、請求項32または33に記載のディスプレイ装置。
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