JPWO2014057647A1 - 有機エレクトロルミネッセンス素子及び照明装置 - Google Patents
有機エレクトロルミネッセンス素子及び照明装置 Download PDFInfo
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- JPWO2014057647A1 JPWO2014057647A1 JP2014540735A JP2014540735A JPWO2014057647A1 JP WO2014057647 A1 JPWO2014057647 A1 JP WO2014057647A1 JP 2014540735 A JP2014540735 A JP 2014540735A JP 2014540735 A JP2014540735 A JP 2014540735A JP WO2014057647 A1 JPWO2014057647 A1 JP WO2014057647A1
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- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
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- 238000001228 spectrum Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 150000004905 tetrazines Chemical class 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
2 第1電極
3 発光層
4 第2電極
5 発光積層体
6 封止材
7 電荷移動層
8 封止間隙
9 バリア層
10 光取り出し構造(第1の光取り出し構造)
11 凹凸構造
12 透明被覆層
13 凸部
14 凹部
15 凹凸区画
20 第2の光取り出し構造
30 側面凹凸構造
31 側面凸部
32 側面凹部
40 凹所
Claims (16)
- 光透過性を有する防湿性基板と、前記防湿性基板側から光透過性の第1電極、発光波長の異なる二以上の光を発する発光層、及び、第2電極をこの順で有する発光積層体と、前記防湿性基板に接着され前記発光積層体を覆う封止材と、を備えた有機エレクトロルミネッセンス素子であって、
前記防湿性基板の前記第1電極側に、前記防湿性基板と屈折率が略同じか前記防湿性基板よりも屈折率が小さい材料で形成された凹凸構造を有する光取り出し構造を備え、
前記凹凸構造は、高さが略等しい複数の凸部がマトリックス状の凹凸の一区画ごとに割り当てられて面状に配置することにより形成され、平面視での単位領域における前記凸部の面積率が各領域において略同一であることを特徴とする有機エレクトロルミネッセンス素子。 - 前記光取り出し構造の側面は、前記防湿性基板の表面に垂直な方向から内側に傾いた斜面であることを特徴とする請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記光取り出し構造の側面は、平面視において側方に凸凹となった側面凹凸構造を有していることを特徴とする請求項1又は2に記載の有機エレクトロルミネッセンス素子。
- 前記側面凹凸構造は、凹凸の平均ピッチが0.3μmより大きく10μmより小さいことを特徴とする請求項3に記載の有機エレクトロルミネッセンス素子。
- 前記光取り出し構造は、前記凹凸構造よりも大きく凹んだ凹所が前記第1電極側に設けられ、
前記第1電極は、前記光取り出し構造の表面において凹所に沿った形状で形成されていることを特徴とする請求項1〜4のいずれか1項に記載の有機エレクトロルミネッセンス素子。 - 前記凹所は、前記光取り出し構造を貫通していることを特徴とする請求項5に記載の有機エレクトロルミネッセンス素子。
- 前記光取り出し構造は、前記防湿性基板よりも屈折率が大きい材料で形成され前記凹凸構造を被覆する透明被覆層を有することを特徴とする請求項1〜6のいずれか1項に記載の有機エレクトロルミネッセンス素子。
- 前記透明被覆層は樹脂により形成されていることを特徴とする請求項7に記載の有機エレクトロルミネッセンス素子。
- 前記光取り出し構造は、平面視において前記封止材よりも内側に形成されていることを特徴とする請求項1〜8のいずれか1項に記載の有機エレクトロルミネッセンス素子。
- 前記光取り出し構造と前記第1電極との間に、防湿性を有する光透過性のバリア層が形成されていることを特徴とする請求項1〜9のいずれか1項に記載の有機エレクトロルミネッセンス素子。
- 前記バリア層の厚みは、このバリア層の平均屈折率をnとしたときに、400/n〔nm〕以下であることを特徴とする請求項10に記載の有機エレクトロルミネッセンス素子。
- 前記凹凸構造は、回折光学構造として形成されていることを特徴とする請求項1〜11のいずれか1項に記載の有機エレクトロルミネッセンス素子。
- 前記光取り出し構造は、前記封止材を前記防湿性基板に接着する接着剤よりも吸水性の高い吸水材料を有することを特徴とする請求項1〜12のいずれか1項に記載の有機エレクトロルミネッセンス素子。
- 前記光取り出し構造は、第1の光取り出し構造であり、
前記防湿性基板は、前記第1電極とは反対側の表面に、光散乱構造を有する第2の光取り出し構造が設けられていることを特徴とする請求項1〜13のいずれか1項に記載の有機エレクトロルミネッセンス素子。 - 前記第2の光取り出し構造は、前記防湿性基板の粗面化により形成されていることを特徴とする請求項14に記載の有機エレクトロルミネッセンス素子。
- 請求項1〜15のいずれか1項に記載の有機エレクトロルミネッセンス素子を備えた照明装置。
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- 2013-10-07 CN CN201380053234.6A patent/CN104770063A/zh active Pending
- 2013-10-07 JP JP2014540735A patent/JP6241757B2/ja active Active
- 2013-10-07 EP EP13845710.6A patent/EP2908603A4/en not_active Withdrawn
- 2013-10-07 KR KR1020157011871A patent/KR20150064203A/ko not_active Application Discontinuation
- 2013-10-11 TW TW102136813A patent/TW201421767A/zh unknown
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Also Published As
Publication number | Publication date |
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CN104770063A (zh) | 2015-07-08 |
WO2014057647A1 (ja) | 2014-04-17 |
KR20150064203A (ko) | 2015-06-10 |
US20150270512A1 (en) | 2015-09-24 |
EP2908603A4 (en) | 2015-12-16 |
TW201421767A (zh) | 2014-06-01 |
JP6241757B2 (ja) | 2017-12-06 |
US9620740B2 (en) | 2017-04-11 |
EP2908603A1 (en) | 2015-08-19 |
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