JP7335761B2 - ディスプレイ装置 - Google Patents
ディスプレイ装置 Download PDFInfo
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- JP7335761B2 JP7335761B2 JP2019168796A JP2019168796A JP7335761B2 JP 7335761 B2 JP7335761 B2 JP 7335761B2 JP 2019168796 A JP2019168796 A JP 2019168796A JP 2019168796 A JP2019168796 A JP 2019168796A JP 7335761 B2 JP7335761 B2 JP 7335761B2
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- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electroluminescent Light Sources (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
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Description
前記第1入射角の第1色光に対して、前記フィルタの透過率は、反射率よりも低いことがあり得る。
前記第1色光は、410nm~480nmの波長を有することが好ましい。
前記複数の第1層の各々は、シリコンナイトライド(silicon nitride)を含み、前記複数の第2層の各々は、シリコンオキサイド(silicon oxide)を含むことが好ましい。
前記複数の第1層と前記複数の第2層との積層数は5~20であることが好ましい。
前記回路基板上に配置され、前記複数の発光素子に対応する複数の開口部が定義された反射シートをさらに含み、前記反射シートは青色のカラーを有し得る。
前記複数のフィルタパターンの各々は、前記対応する発光素子に重畳する第1部分及び前記第1部分よりも小さい面積を有して前記対応する発光素子に重畳しない第2部分を含み得る。
前記複数のフィルタパターンに隣接し、前記フィルタに重畳しない補償層をさらに含み得る。
前記フィルタは、前記支持基板の上面及び下面の一部の領域に重畳し、前記複数の発光素子に重畳しない領域に定義された開口部を含み得る。
前記開口部に充填された補償パターンをさらに含んでいてもよい。
前記散乱粒子は、TiO2、SiO2、ZnO、Al2O3、BaSO4、CaCO3、又はZrO2を含み得る。
前記散乱粒子は、2以上の屈折率を有し、直径が150nm~400nmであることが好ましい。
前記支持基板の上面に接触して屈折率が1.3以下の絶縁層をさらに含み得る。
前記支持基板の下面には、凹状のレンズパターンが定義され得る。
前記支持基板の上面には、凸状の散乱パターンが定義され得る。
前記支持基板の上面の前記散乱パターンに接触して、平坦面を提供するパッシベーション層をさらに含むことができる。
前記支持基板は、ガラス基板であり得る。
また、光学部材の機能層を支持するガラス基板は、熱変形が少ないため、発光素子とガラス基板との間の光学距離が短くても不良が発生しない。
さらに、直下型の発光ユニットが、量子ドット層を利用して白色光をディスプレイパネルに提供するため、ディスプレイパネルは、高輝度のイメージを提供することができる。
100-IS ディスプレイ面
110 第1基板
120 第2基板
200 発光ユニット
200-I 絶縁層
200-L 発光素子
200-P 回路基板
200-S 回路層
200-SL 信号ライン
200-SR 保護層
200-SRO 開口部
300 光学部材
300-B1、300-B2 (下部、上部)バリア層
300-F フィルタ
300-FO 開口部
300-G 支持基板(ガラス基板/合成樹脂基板)
300-I 絶縁層
300-LS 下面
300-P 保護層
300-PA パッシベーション層
300-Q 量子ドット層
300-RP レンズパターン
300-S 散乱層
300-SP 散乱パターン
300-US 上面
400L (第1)保護部材
400L-10 底部
400L-20 側壁部
400U (第2)保護部材
400U-10 側壁部
400U-20 前面部
400U-OP 開口部
AD 接着部材
BR ベース樹脂
CL 補償層
CP 補償パターン
DD ディスプレイ装置
EC 封入部材
ED1、ED2 (第1、第2)電極
ER、ER1、ER0 有効半径
FP フィルタパターン
I-0、I-1 輝度
L1 第1層
L2 第2層
L-B 第1色光
LD 光学距離
Q1、Q2 (第1、第2)量子ドット
R1 第1領域
R2 第2領域
RS 反射シート
RS-O 開口部
SP 散乱粒子
VA 垂直領域
WR1、WR2 ワイヤ
Claims (23)
- 光学部材と、
前記光学部材の上側に配置されたディスプレイパネルと、
前記光学部材の下側に配置されて、第1色光を前記光学部材に提供する複数の発光ユニットと、を備え、
前記光学部材は、
厚さ方向に対向する上面及び下面を有し、前記複数の発光ユニットに平面上で重畳する支持基板と、
前記支持基板の上面上又は下面上に直接配置されて、前記第1色光から第2色光と第3色光とを生成する量子ドット層と、
第1入射角の前記第1色光に対して第1透過率を有し、前記第1入射角よりも大きい第2入射角の前記第1色光に対して前記第1透過率よりも大きい第2透過率を有するフィルタと、を含み、
前記第1入射角は0度であり、
前記複数の発光ユニットの各々は、前記光学部材の長辺方向に延長された細長い形状の回路基板及び前記回路基板上に実装された複数の発光素子を含み、
前記フィルタは、互いに離隔した複数のフィルタパターンを含み、前記フィルタパターンの各々は、前記複数の発光ユニットに含まれる前記複数の発光素子の中の対応する1つの発光素子に平面上で整列されていることを特徴とするディスプレイ装置。 - 前記第1透過率は、10%~45%であることを特徴とする請求項1に記載のディスプレイ装置。
- 前記第1入射角の第1色光に対して、前記フィルタの透過率は、反射率よりも低いことを特徴とする請求項1に記載のディスプレイ装置。
- 前記第1色光は、410nm~480nmの波長を有することを特徴とする請求項1に記載のディスプレイ装置。
- 前記フィルタは、
複数の第1層と、
前記複数の第1層と交互に配置された複数の第2層と、を備え、
前記複数の第1層の屈折率は、450nmの波長の光に対して1.8~2.0であり、
前記複数の第2層の屈折率は、450nmの波長の光に対して1.4~1.5であり、
前記複数の第1層の厚さは、160nm~200nmであり、
前記複数の第2層の厚さは、60nm~100nmであることを特徴とする請求項1に記載のディスプレイ装置。 - 前記複数の第1層の各々は、シリコンナイトライド(silicon nitride)を含み、前記複数の第2層の各々は、シリコンオキサイド(silicon oxide)を含むことを特徴とする請求項5に記載のディスプレイ装置。
- 前記複数の第1層と前記複数の第2層との積層数は5~20であることを特徴とする請求項5に記載のディスプレイ装置。
- 前記回路基板上に配置され、前記複数の発光素子に対応する複数の開口部が定義された反射シートをさらに含み、
前記反射シートは青色のカラーを有することを特徴とする請求項1に記載のディスプレイ装置。 - 前記フィルタは、前記支持基板の上面及び下面の一部の領域に重畳することを特徴とする請求項1に記載の光学部材。
- 前記複数のフィルタパターンの各々は、前記対応する発光素子に重畳する第1部分及び前記第1部分よりも小さい面積を有して前記対応する発光素子に重畳しない第2部分を含むことを特徴とする請求項1に記載のディスプレイ装置。
- 前記複数のフィルタパターンに隣接し、前記フィルタに重畳しない補償層をさらに含むことを特徴とする請求項1に記載のディスプレイ装置。
- 前記フィルタは、
前記支持基板の上面及び下面の一部の領域に重畳し、
前記複数の発光素子に重畳しない領域に定義された開口部を含むことを特徴とする請求項1に記載のディスプレイ装置。 - 前記開口部に充填された補償パターンをさらに含むことを特徴とする請求項12に記載のディスプレイ装置。
- 前記支持基板の上面上又は下面上に直接配置され、ベース樹脂層及び前記ベース樹脂層に混合された散乱粒子を含む散乱層をさらに含むことを特徴とする請求項1に記載のディスプレイ装置。
- 前記散乱粒子は、TiO2、SiO2、ZnO、Al2O3、BaSO4、CaCO3、又はZrO2を含むことを特徴とする請求項14に記載のディスプレイ装置。
- 前記散乱粒子は、2以上の屈折率を有し、直径が150nm~400nmであることを特徴とする請求項14に記載のディスプレイ装置。
- 前記支持基板の上面に接触して屈折率が1.3以下の絶縁層をさらに含むことを特徴とする請求項1に記載のディスプレイ装置。
- 前記支持基板の下面には、凹状のレンズパターンが定義されることを特徴とする請求項1に記載のディスプレイ装置。
- 前記支持基板の上面には、凸状の散乱パターンが定義されることを特徴とする請求項1に記載のディスプレイ装置。
- 前記支持基板の上面の前記散乱パターンに接触して、平坦面を提供するパッシベーション層をさらに含むことを特徴とする請求項19に記載のディスプレイ装置。
- 前記量子ドット層の上面及び下面の中の少なくとも一つに接触し、無機物質を有するバリア層をさらに含むことを特徴とする請求項1に記載のディスプレイ装置。
- 前記支持基板は、ガラス基板であることを特徴とする請求項1に記載のディスプレイ装置。
- 光学部材と、
前記光学部材の上側に配置されたディスプレイパネルと、
前記光学部材の下側に配置され、青色光を前記光学部材に提供する複数の発光ユニットと、
前記複数の発光ユニット、前記光学部材、及び前記ディスプレイパネルを収容する保護部材と、を備え、
前記光学部材は、
厚さ方向に対向する上面及び下面を含み、平面上で前記複数の発光ユニットに重畳するガラス基板と、
前記ガラス基板の上面又は下面上に直接配置され、前記青色光から緑色光と赤色光とを生成する量子ドット層と、
前記ガラス基板の上面又は下面上に直接配置されたフィルタを含み、
前記フィルタは、
複数の第1層及び前記複数の第1層と交互に配置された複数の第2層を含み、
前記複数の第1層の屈折率は、450nmの波長の光に対して1.8~2.0であり、
前記複数の第2層の屈折率は、450nmの波長の光に対して1.4~1.5であり、
前記複数の第1層の厚さは、160nm~200nmであり、
前記複数の第2層の厚さは、60nm~100nmであることを特徴とするディスプレイ装置。
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