JP2023501398A - 段階的な屈折率を有する有機発光ダイオード光抽出層 - Google Patents
段階的な屈折率を有する有機発光ダイオード光抽出層 Download PDFInfo
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- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
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Abstract
Description
キャッピング層(CPL)は、カソード106の上部に置くことができる。CPLは、典型的には、非EML OLED層と同様の有機材料である。CPL層上には、パッシベーション層が堆積され得る。
Claims (20)
- 有機発光ダイオード(OLED)構造であって、
平面部分を有する発光ゾーンを含むOLED層の積層体と、
OLED層の前記積層体の前記発光ゾーンの上方に配置された、UV硬化インクを含む光抽出層であって、前記平面部分に垂直な軸に沿って屈折率の勾配を有する、光抽出層と
を含む、構造。 - 前記光抽出層の前記屈折率が、前記平面部分からの距離とともに減少する、請求項1に記載の構造。
- 前記光抽出層が、異なる屈折率を有する前記積層体内の連続するサブレイヤを有するサブレイヤの積層体を含む、請求項1に記載の構造。
- 前記光抽出層とOLED層の前記積層体の間にUVブロッキング層を含む、請求項1に記載の構造。
- 前記光抽出層が最大5μmの厚さを有し、前記UVブロッキング層が50~500nmの厚さを有する、請求項4に記載の構造。
- ウェル構造のアレイを有する誘電体層をさらに含み、各ウェル構造が斜めの側壁及び床を含み、前記ウェル構造がプラトーにより分離されており、各ウェルが前記光抽出層によって少なくとも部分的に充填されている、請求項1に記載の構造。
- 前記誘電体層とOLED層の前記積層体の間にミラー層をさらに含む、請求項6に記載の構造。
- 前記光抽出層が、マトリックス材料中に有機金属分子又は金属酸化物ナノ粒子を含む、請求項1に記載の構造。
- 前記有機金属分子又は金属酸化物ナノ粒子のローディングが、前記平面部分に垂直な前記軸に沿って変化し、屈折率の勾配を提供する、請求項8に記載の構造。
- 前記有機金属分子又は金属酸化物ナノ粒子が、ZrO、ZrOC、AlO、AlOC、TiO、TiOC、ZnO、又はZnOCのうちの1つ又は複数を含む、請求項8に記載の構造。
- 有機発光ダイオード(OLED)構造を製造するための方法であって、
OLED層の積層体の上方にあるUVブロッキング層の上方に、異なる屈折率のUV硬化性流体の一連の層を堆積させることと、
UV硬化性流体の前記層をUV光で硬化させて、OLED層の前記積層体の発光ゾーンの平面部分に垂直な軸に沿って屈折率の勾配を有する光抽出層(LEL)を形成することと
を含む、方法。 - UV硬化性流体の前記一連の層を堆積することが、ノズルから前記UV硬化性流体の液滴を放出することを含む、請求項11に記載の方法。
- 前記液滴が、誘電体層の複数のウェルを少なくとも部分的に充填するために放出される、請求項12に記載の方法。
- UV硬化性流体の前記層を堆積することが、各ウェル内に複数のサブレイヤを連続して形成することを含む、請求項13に記載の方法。
- 前記複数のサブレイヤのサブレイヤを形成することが、前記UV硬化性流体の1つ又は複数の液滴を前記ウェルに放出することと、後続のサブレイヤを形成する前に前記流体を硬化させることとを含む、請求項14に記載の方法。
- 前記液滴が、有機金属分子又は金属酸化物ナノ粒子の溶液を含む、請求項11に記載の方法。
- 前記一連の層の異なる層の液滴が、前記溶液中、異なる濃度の前記有機金属分子又は金属酸化物ナノ粒子を有して、前記異なる屈折率を提供し得る、請求項16に記載の方法。
- 連続して減少する屈折率を有する前記一連の層を堆積することを含む、請求項11に記載の方法。
- 有機発光ダイオード(OLED)ディスプレイであって、
駆動回路を有する基板と、
前記基板上に配置された誘電体ピクセル画定層であって、前記ピクセル画定層が、中に形成された複数のウェルを有する、誘電体ピクセル画定層と、
前記複数のウェル内に形成された複数のOLEDであって、前記複数のOLEDの各OLEDが、前記複数のウェルの対応するウェル内に形成され、
前記ウェルの底部に形成されたアノードと、
前記アノード上に配置されたOLED層の積層体と、
OLED層の前記積層体上に配置されたカソードと、
前記ウェルを少なくとも部分的に充填するためにUVブロッキング層の上方に配置されたUV硬化インクを含む光抽出層(LEL)であって、前記ウェルの前記底部に垂直な軸に沿って屈折率の勾配を有する、光抽出層と
を含む、複数のOLEDと
を含む、ディスプレイ。 - 前記光抽出層の前記屈折率が、前記平面部分からの距離とともに減少する、請求項19に記載のディスプレイ。
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