JP4596340B2 - 高分子色素を用いた色変換膜およびそれを用いた多色発光有機elデバイス - Google Patents
高分子色素を用いた色変換膜およびそれを用いた多色発光有機elデバイス Download PDFInfo
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- JP4596340B2 JP4596340B2 JP2010521640A JP2010521640A JP4596340B2 JP 4596340 B2 JP4596340 B2 JP 4596340B2 JP 2010521640 A JP2010521640 A JP 2010521640A JP 2010521640 A JP2010521640 A JP 2010521640A JP 4596340 B2 JP4596340 B2 JP 4596340B2
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- H—ELECTRICITY
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- H10K50/805—Electrodes
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- C—CHEMISTRY; METALLURGY
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Description
(1)陽極/有機発光層/陰極
(2)陽極/正孔注入層/有機発光層/陰極
(3)陽極/有機発光層/電子注入層/陰極
(4)陽極/正孔注入層/有機発光層/電子注入層/陰極
(5)陽極/正孔輸送層/有機発光層/電子注入層/陰極
(6)陽極/正孔注入層/正孔輸送層/有機発光層/電子注入層/陰極
(7)陽極/正孔注入層/正孔輸送層/有機発光層/電子輸送層/電子注入層/陰極
上記の層構成において、陽極および陰極は、それぞれ透明電極31(第1および第2透明電極31a、31bを含む)または反射電極33のいずれかである。
色変換膜を形成した例を以下に説明する。
実施例1にて作製した色変換膜の吸収およびフォトルミネセンス(PL)スペクトル(励起波長470nm)を測定した。得られたスペクトルを図3に示す。
本実施例は、図1Bに示すトップエミッション型デバイスを作製した例を示す。
得られた多色発光有機ELデバイスに対して、10mA/cm2の電流密度で電流を流したところ、CIE色度座標において(x,y)=(0.65,0.35)の赤色光を発した。輝度−電流効率は4.5cd/Aであった。また、このときバックライトに起因した発光は確認されなかった。色変換膜を形成する目的ではなく有機EL素子を別途作製して、バックライトとしての発光のみを測定したところ、CIE色度座標において(x,y)=(0.13,0.20)の青色光を発し、輝度−電流効率は6.2cd/Aであった。このことから、本実施例の膜厚700nmの色変換膜が、発光層から発せられる青色光を十分に吸収して、高強度の赤色光を放射していることが分かる。
11 基板
20 色変換膜
30(a〜c) 有機EL素子
31(a,b) 透明電極
32 有機EL層
33 反射電極
40 反射層
Claims (8)
- 高分子色素材料を含む色変換膜であって、
該高分子色素材料は第1色素ユニットおよび第2色素ユニットから構成され、
第1色素ユニットは色変換膜への入射光を吸収して、吸収した入射光のエネルギーを第2色素ユニットへと移動させるユニットであり、
第2色素ユニットは、第1色素ユニットから該エネルギーを受容して光を放射するユニットである
ことを特徴とする色変換膜。 - 第1色素ユニットは、該高分子色素材料を構成する総構成ユニット数を基準として50%以上、99.99%以下であることを特徴とする請求項1に記載の色変換膜。
- 第2色素ユニットは、該高分子色素材料を構成する総構成ユニット数を基準として0.01%以上、50%以下であることを特徴とする請求項1に記載の色変換膜。
- 該高分子色素材料の重量平均分子量が1000以上、10万以下であることを特徴とする請求項1に記載の色変換膜。
- 塗布プロセスによって形成されていることを特徴とする請求項1からの4のいずれかに記載の色変換膜。
- 少なくとも一方が透明電極である一対の電極と、該一対の電極に挟持される有機EL層と、請求項1から4のいずれかに記載の色変換膜とを有する多色発光有機ELデバイスであって、
前記色変換膜は2μm以下の膜厚を有することを特徴とする多色発光有機ELデバイス。 - 前記色変換膜が塗布プロセスによって形成されていることを特徴とする請求項6に記載の多色発光有機ELデバイス。
- 前記色変換膜と前記透明電極とが接触して配置されていることを特徴とする請求項6に記載の多色発光有機ELデバイス。
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JP2008192998 | 2008-07-28 | ||
PCT/JP2009/063359 WO2010013681A1 (ja) | 2008-07-28 | 2009-07-27 | 高分子色素を用いた色変換膜およびそれを用いた多色発光有機elデバイス |
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JP (1) | JP4596340B2 (ja) |
KR (1) | KR101020690B1 (ja) |
CN (1) | CN102067729B (ja) |
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WO (1) | WO2010013681A1 (ja) |
Families Citing this family (14)
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GB2471062B (en) * | 2009-04-16 | 2012-10-31 | Cambridge Display Tech Ltd | Organic light-emitting materials and devices |
KR101084243B1 (ko) * | 2009-12-14 | 2011-11-16 | 삼성모바일디스플레이주식회사 | 유기 발광 표시 장치 |
JP5715380B2 (ja) * | 2010-06-30 | 2015-05-07 | 富士フイルム株式会社 | 着色硬化性組成物、カラーフィルタ、その製造方法、固体撮像素子、液晶表示装置、および色素多量体 |
KR101983229B1 (ko) * | 2010-07-23 | 2019-05-29 | 삼성디스플레이 주식회사 | 유기 발광 표시 장치 및 그의 제조 방법 |
GB201109372D0 (en) | 2011-06-06 | 2011-07-20 | Silixa Ltd | Method for locating an acoustic source |
GB2492802A (en) | 2011-07-13 | 2013-01-16 | Statoil Petroleum As | Using distributed acoustic measurements for surveying a hydrocarbon producing well and for compensating other acoustic measurements |
JP6269065B2 (ja) * | 2012-02-10 | 2018-01-31 | 日本ゼオン株式会社 | 有機エレクトロルミネッセンス光源装置 |
KR101590299B1 (ko) * | 2015-01-27 | 2016-02-01 | 주식회사 엘지화학 | 금속 착체 및 이를 포함하는 색변환 필름 |
DE102015111564A1 (de) * | 2015-07-16 | 2017-01-19 | Osram Oled Gmbh | Organisches optoelektronisches Bauteil und Herstellungsverfahren hierfür |
US11459504B2 (en) * | 2017-07-28 | 2022-10-04 | Toray Industries, Inc. | Color conversion composition and color conversion film, and light source unit, display, and lighting including same |
US10069047B1 (en) * | 2018-01-16 | 2018-09-04 | Leedarson Lighting Co. Ltd. | LED device |
WO2020149368A1 (ja) * | 2019-01-16 | 2020-07-23 | コニカミノルタ株式会社 | 波長変換膜、発光部材、認証装置、リストバンド型電子機器及び生体計測装置 |
CN110911459B (zh) * | 2019-11-13 | 2022-05-13 | 清华大学 | 一种色转换有机电致发光装置 |
CN116406486A (zh) | 2020-10-14 | 2023-07-07 | 浙江光昊光电科技有限公司 | 一种发光器件以及其在显示中的应用 |
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KR101020690B1 (ko) | 2011-03-14 |
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US20120091883A1 (en) | 2012-04-19 |
KR20110013475A (ko) | 2011-02-09 |
TWI477564B (zh) | 2015-03-21 |
US8558450B2 (en) | 2013-10-15 |
WO2010013681A1 (ja) | 2010-02-04 |
CN102067729B (zh) | 2013-02-20 |
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