JP7129322B2 - 色変換素子及びこれを含む表示装置 - Google Patents
色変換素子及びこれを含む表示装置 Download PDFInfo
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- JP7129322B2 JP7129322B2 JP2018231757A JP2018231757A JP7129322B2 JP 7129322 B2 JP7129322 B2 JP 7129322B2 JP 2018231757 A JP2018231757 A JP 2018231757A JP 2018231757 A JP2018231757 A JP 2018231757A JP 7129322 B2 JP7129322 B2 JP 7129322B2
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Description
(式中、AはCs、Rbまたはこれらの合金であり、BはCu、Sb、Ge、Sn及びBiのうちの少なくとも一つまたはこれらの合金であり、m、nおよびlは1乃至9の整数であり、XはF、Cl、BrおよびIのうちの少なくとも一つまたはこれらの混合物である。)
(式中、AはCs、Rbまたはこれらの合金であり、BはCu、Sb、Ge、Sn及びBiのうちの少なくとも一つまたはこれらの合金であり、m、nおよびlは1乃至9の整数であり、XはF、Cl、BrおよびIのうちの少なくとも一つまたはこれらの混合物である。)
式中、AはCs、Rbまたはこれらの合金であり、BはCu、Sb、Ge、Sn及びBiのうちの少なくとも一つまたはこれらの合金であり、m、nおよびlは1乃至9の整数であり、XはF、Cl、BrおよびIのうちの少なくとも一つまたはこれらの混合物である。
<Cs 3 Sb 2 Br 9 の製造>
前記化学式1で表される化合物のうち、Cs3Sb2Br9の製造について説明する。
前記得られたCs3Sb2Br9の光学特性を評価するために、光硬化性複合樹脂を製造する。
前記製造されたCs3Sb2Br9を含む光硬化性複合樹脂を用いてCs3Sb2Br9の光学特性を測定し、その結果を図17に示した。
10 色変換素子
20、30 表示素子
100 ベース基板
210 色変換層
230 色透光層
211 色変換粒子
231 散乱剤
310 色フィルター層
320 光フィルター層
400 低屈折層
500 オーバーコート層
BM 遮光部材
Claims (24)
- 第1領域と第2領域に定義されるベース基板と、
前記ベース基板上に位置し、前記第1領域内に配置され、入射する光の波長を変換させる色変換粒子および入射する前記光を吸収しない光透過性樹脂を含む色変換層と、
前記色変換層と前記ベース基板との間に配置され、前記色変換層から放出される光が入射し、前記入射する光の少なくとも一部を遮断する色フィルター層と、
前記ベース基板上に位置し、前記第2領域内に配置される色透光層と、
前記色変換層の外側面のうち、前記ベース基板に接する面以外の面に配置され、前記色変換層と前記色フィルター層との間に配置され、前記色変換層の前記光透過性樹脂よりも屈折率が低い低屈折層と、
前記色変換層から放出される光を反射させる光フィルター層と、
を含み、
前記低屈折層は、前記色変換層から放出されて前記色フィルター層に入射する前記光の少なくとも一部を反射させ、前記色変換粒子は、下記化学式1で表される化合物を含む、色変換素子。
(式中、AはCs、Rbまたはこれらの合金であり、BはCu、Sb、Ge、Sn及びBiのうちの少なくとも一つまたはこれらの合金であり、m、nおよびlは1乃至9の整数であり、XはF、Cl、BrおよびIのうちの少なくとも一つまたはこれらの混合物である。) - 前記色変換粒子は多角形または線形の構造を持つ、請求項1に記載の色変換素子。
- 前記色変換粒子は、一側方向に測定された長さが前記一側方向に対して垂直な方向に測定された長さよりも長く、前記一側方向に対して垂直な方向に測定された長さは前記色変換粒子の厚さよりも長い形状を有する、請求項2に記載の色変換素子。
- 前記色変換粒子は、前記一側方向に測定された長さが2nm以上300nm以下の範囲を持ち、前記厚さは0.5nm以上5nm以下の範囲を持つ、請求項3に記載の色変換素子。
- 前記色変換粒子は、少なくとも一つの粒子が隣接の他の少なくとも一つの粒子と凝集して前記光透過性樹脂上に分散している、請求項1に記載の色変換素子。
- 前記色変換層は、中心波長帯域が第1波長である第1光を、中心波長帯域が前記第1波長よりも長い第2波長である第2光に変換させる第1色変換粒子を含む第1色変換層を含む、請求項1に記載の色変換素子。
- 前記色フィルター層は、前記第1色変換層と前記ベース基板との間に配置される第1色フィルター層を含み、
前記第1色フィルター層は、前記第2光を透過させ、前記第1光の透過を遮断する、請求項6に記載の色変換素子。 - 前記色変換層は、前記第1光を、中心波長帯域が前記第2波長よりも長い第3波長である第3光に変換させる第2色変換粒子を含む第2色変換層をさらに含み、
前記色フィルター層は、前記第2色変換層と前記ベース基板との間に配置される第2色フィルター層をさらに含む、請求項7に記載の色変換素子。 - 前記第1色変換粒子と前記第2色変換粒子は、前記化学式1で互いに異なる前記Xを含む、請求項8に記載の色変換素子。
- 前記第2色フィルター層は、前記第3光を透過させ、前記第1光及び前記第2光を遮断する、請求項8に記載の色変換素子。
- 前記第2色変換層は量子ドット物質をさらに含む、請求項8に記載の色変換素子。
- 前記色透光層には、前記第1光が入射し、
前記色フィルター層は、前記色透光層と前記ベース基板との間に配置される第3色フィルター層をさらに含み、
前記色透光層は、前記第1光を前記第3色フィルター層へ放出し、
前記第3色フィルター層は、前記第1光を透過させ、前記第2光及び前記第3光の透過を遮断する、請求項8に記載の色変換素子。 - 前記光フィルター層は、前記色変換層に入射するか或いは前記色変換層から放出される光のうち、少なくとも一部を透過させ、残りを反射させる、請求項1に記載の色変換素子。
- 表示素子と、
前記表示素子の上部に配置される色変換素子と、を含み、
前記色変換素子は、
第1領域と第2領域に定義されるベース基板と、
前記ベース基板上に位置し、前記第1領域内に配置され、入射する光の波長を変換させる色変換粒子および入射する前記光を吸収しない光透過性樹脂を含む色変換層と、
前記色変換層と前記ベース基板との間に配置され、前記色変換層から放出される光が入射し、前記入射する光の少なくとも一部を遮断する色フィルター層と、
前記ベース基板上に位置し、前記第2領域内に配置される色透光層と、
前記色変換層の外側面のうち、前記ベース基板に接する面以外の面に配置され、前記色変換層と前記色フィルター層との間に配置され、前記色変換層の前記光透過性樹脂よりも屈折率が低い低屈折層と、
前記色変換層から放出される光を反射させる光フィルター層と、
を含み、
前記低屈折層は、前記色変換層から放出されて前記色フィルター層に入射する前記光の少なくとも一部を反射させ、前記色変換粒子は、下記化学式1で表される化合物を含む、表示装置。
(式中、AはCs、Rbまたはこれらの合金であり、BはCu、Sb、Ge、Sn及びBiのうちの少なくとも一つまたはこれらの合金であり、m、nおよびlは1乃至9の整数であり、XはF、Cl、BrおよびIのうちの少なくとも一つまたはこれらの混合物である。) - 前記色変換粒子は多角形または線形の構造を持つ、請求項14に記載の表示装置。
- 前記色変換粒子は、一側方向に測定された長さが前記一側方向に対して垂直な方向に測定
された長さよりも長く、前記一側方向に対して垂直な方向に測定された長さは前記色変換粒子の厚さ分よりも長い形状を有する、請求項15に記載の表示装置。 - 前記色変換粒子は、前記一側方向に測定された長さが2nm以上300nmの範囲を持ち、前記厚さは0.5nm以上5nm以下の範囲を持つ、請求項16に記載の表示装置。
- 前記色変換層と前記ベース基板との間に配置され、前記色変換層から放出される光が入射し、前記光の少なくとも一部を遮断する色フィルター層をさらに含む、請求項14に記載の表示装置。
- 前記色変換層は、入射する前記光を吸収しない光透過性樹脂をさらに含む、請求項18に記載の表示装置。
- 前記色変換粒子は、少なくとも一つの粒子が隣接の他の少なくとも一つの粒子と凝集して前記光透過性樹脂上に分散している、請求項19に記載の表示装置。
- 前記色変換層は、中心波長帯域が第1波長である第1光が入射し、前記第1光を、中心波長帯域が前記第1波長よりも長い第2波長である第2光に変換させる第1色変換粒子を含む第1色変換層、および
前記第1光を、中心波長帯域が前記第2波長よりも長い第3波長である第3光に変換させる第2色変換粒子を含む第2色変換層を含む、請求項14に記載の表示装置。 - 前記第1色変換粒子と前記第2色変換粒子は、前記化学式1で互いに異なる前記Xを含む、請求項21に記載の表示装置。
- 前記表示素子は、
第1基板、
前記第1基板に対向する第2基板、
前記第1基板と前記第2基板との間に配置される液晶層、及び
前記液晶層を基準に前記色変換素子の反対側に配置される光源部を含む、請求項14に記載の表示装置。 - 前記表示素子は、
第1電極、
前記第1電極上に配置される正孔輸送層、
前記正孔輸送層上に配置される発光層、及び
前記発光層上に配置される第2電極を含む、請求項14に記載の表示装置。
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