JP2018160329A - 有機el素子及び有機el素子の製造方法 - Google Patents
有機el素子及び有機el素子の製造方法 Download PDFInfo
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- JP2018160329A JP2018160329A JP2017055718A JP2017055718A JP2018160329A JP 2018160329 A JP2018160329 A JP 2018160329A JP 2017055718 A JP2017055718 A JP 2017055718A JP 2017055718 A JP2017055718 A JP 2017055718A JP 2018160329 A JP2018160329 A JP 2018160329A
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
図1〜図3に示されるように、有機EL素子1は、基板3と、第1有機EL部5と、第2有機EL部7と、封止部9と、を備えている。なお、図1においては、封止部9の図示を省略している。本実施形態の有機EL素子1は、両面発光型の素子である。
基板3は、可視光(波長400nm〜800nmの光)に対して透光性を有する樹脂から構成されている。基板3は、フィルム状の基板(フレキシブル基板、可撓性を有する基板)である。基板3の厚さは、例えば、30μm以上500μm以下である。
陽極層10及び陽極層16は、同様の構成を有している。以下では、陽極層10を一例に具体的に説明する。陽極層10には、光透過性を示す電極層が用いられる。光透過性を示す電極としては、電気伝導度の高い金属酸化物、金属硫化物及び金属等の薄膜を用いることができ、光透過率の高い薄膜が好適に用いられる。例えば酸化インジウム、酸化亜鉛、酸化スズ、インジウム錫酸化物(Indium Tin Oxide:略称ITO)、インジウム亜鉛酸化物(Indium Zinc Oxide:略称IZO)、金、白金、銀、銅等からなる薄膜が用いられ、これらの中でもITO、IZO、又は酸化スズからなる薄膜が好適に用いられる。
有機機能層12及び有機機能層18は、同様の構成を有している。以下では、有機機能層12を一例に具体的に説明する。有機機能層12は、発光層を含んでいる。有機機能層12は、通常、主として蛍光及び/又はりん光を発光する発光材料、或いは該発光材料とこれを補助する発光層用ドーパント材料を含む。発光層用ドーパント材料は、例えば発光効率を向上させたり、発光波長を変化させたりするために加えられる。なお、蛍光及び/又はりん光を発光する発光材料は、低分子化合物であってもよいし、高分子化合物であってもよい。有機機能層12を構成する有機物としては、例えば下記の色素材料、金属錯体材料、高分子材料等の蛍光及び/又はりん光を発光する発光材料や、下記の発光層用ドーパント材料等を挙げることができる。
色素材料としては、例えばシクロペンダミン及びその誘導体、テトラフェニルブタジエン及びその誘導体、トリフェニルアミン及びその誘導体、オキサジアゾール及びその誘導体、ピラゾロキノリン及びその誘導体、ジスチリルベンゼン及びその誘導体、ジスチリルアリーレン及びその誘導体、ピロール及びその誘導体、チオフェン化合物、ピリジン化合物、ペリノン及びその誘導体、ペリレン及びその誘導体、オリゴチオフェン及びその誘導体、オキサジアゾールダイマー、ピラゾリンダイマー、キナクリドン及びその誘導体、クマリン及びその誘導体等を挙げることができる。
金属錯体材料としては、例えばTb、Eu、Dy等の希土類金属、又はAl、Zn、Be、Pt、Ir等を中心金属に有し、オキサジアゾール、チアジアゾール、フェニルピリジン、フェニルベンゾイミダゾール、キノリン構造等を配位子に有する金属錯体等を挙げることができる。金属錯体としては、例えばイリジウム錯体、白金錯体等の三重項励起状態からの発光を有する金属錯体、アルミニウムキノリノール錯体、ベンゾキノリノールベリリウム錯体、ベンゾオキサゾリル亜鉛錯体、ベンゾチアゾール亜鉛錯体、アゾメチル亜鉛錯体、ポルフィリン亜鉛錯体、フェナントロリンユーロピウム錯体等を挙げることができる。
高分子材料としては、例えばポリパラフェニレンビニレン及びその誘導体、ポリチオフェン及びその誘導体、ポリパラフェニレン及びその誘導体、ポリシラン及びその誘導体、ポリアセチレン及びその誘導体、ポリフルオレン及びその誘導体、ポリビニルカルバゾール及びその誘導体、上記色素材料、又は金属錯体材料を高分子化した材料等を挙げることができる。
発光層用ドーパント材料としては、例えばペリレン及びその誘導体、クマリン及びその誘導体、ルブレン及びその誘導体、キナクリドン及びその誘導体、スクアリウム及びその誘導体、ポルフィリン及びその誘導体、スチリル色素、テトラセン及びその誘導体、ピラゾロン及びその誘導体、デカシクレン及びその誘導体、フェノキサゾン及びその誘導体等を挙げることができる。
陰極層14の材料としては、例えばアルカリ金属、アルカリ土類金属、遷移金属及び周期表第13族金属等を用いることができる。陰極層14の材料としては、具体的には、例えばリチウム、ナトリウム、カリウム、ルビジウム、セシウム、ベリリウム、マグネシウム、カルシウム、ストロンチウム、バリウム、アルミニウム、スカンジウム、バナジウム、亜鉛、イットリウム、インジウム、セリウム、サマリウム、ユーロピウム、テルビウム、イッテルビウム等の金属、前記金属のうちの2種以上の合金、前記金属のうちの1種以上と、金、銀、白金、銅、マンガン、チタン、コバルト、ニッケル、タングステン、錫のうちの1種以上との合金、又はグラファイト若しくはグラファイト層間化合物等が用いられる。合金の例としては、マグネシウム−銀合金、マグネシウム−インジウム合金、マグネシウム−アルミニウム合金、インジウム−銀合金、リチウム−アルミニウム合金、リチウム−マグネシウム合金、リチウム−インジウム合金、カルシウム−アルミニウム合金等を挙げることができる。
続いて、上記構成を有する有機EL素子1の製造方法について説明する。
(a)(陽極層)/発光層/(陰極層)
(b)(陽極層)/正孔注入層/発光層/(陰極層)
(c)(陽極層)/正孔注入層/発光層/電子注入層/(陰極層)
(d)(陽極層)/正孔注入層/発光層/電子輸送層/電子注入層/(陰極層)
(e)(陽極層)/正孔注入層/正孔輸送層/発光層/(陰極層)
(f)(陽極層)/正孔注入層/正孔輸送層/発光層/電子注入層/(陰極層)
(g)(陽極層)/正孔注入層/正孔輸送層/発光層/電子輸送層/電子注入層/(陰極層)
(h)(陽極層)/発光層/電子注入層/(陰極層)
(i)(陽極層)/発光層/電子輸送層/電子注入層/(陰極層)
ここで、記号「/」は、記号「/」を挟む各層が隣接して積層されていることを示す。上記(a)に示す構成は、上記実施形態における有機EL素子1の構成を示している。
(j)陽極層/(構造単位A)/電荷発生層/(構造単位A)/陰極層
(k)陽極層/(構造単位B)x/(構造単位A)/陰極層
Claims (7)
- 可撓性を有する基板であって、互いに対向する第1平坦部及び第2平坦部と、前記第1平坦部の端部と前記第2平坦部の端部とを接続する湾曲形状の接続部と、を有し、前記第1平坦部、前記第2平坦部及び前記接続部が一体に形成された該基板と、
前記第1平坦部の前記第2平坦部に対向する一方の面に配置され、当該一方の面側から第1電極層、第1有機機能層及び第2電極層が少なくとも配置されてなる第1有機EL部と、
前記第2平坦部の前記第1平坦部に対向する一方の面に配置され、当該一方の面側から第3電極層、第2有機機能層及び第4電極層が少なくとも配置されてなる第2有機EL部と、を備え、
前記第1電極層及び前記第3電極層と、前記第2電極層及び前記第4電極層とのうちの少なくとも一方は、前記接続部に配置されていない、有機EL素子。 - 前記第1電極層及び前記第3電極層は、前記接続部に配置されておらず、
前記第2電極層及び前記第4電極層は、一体に形成されており、前記第1平坦部、前記第2平坦部及び前記接続部にわたって配置されている、請求項1に記載の有機EL素子。 - 前記第1有機機能層及び前記第2有機機能層は、一体に形成されており、前記第1平坦部、前記第2平坦部及び前記接続部にわたって配置されている、請求項1又は2に記載の有機EL素子。
- 前記第1有機機能層と前記第2有機機能層とは、発光色が異なる、請求項1〜3のいずれか一項に記載の有機EL素子。
- 前記第1有機EL部と前記第2有機EL部との間に封止部を備える、請求項1〜4のいずれか一項に記載の有機EL素子。
- 可撓性を有する基板の一方の主面上に、第1電極層、第1有機機能層及び第2電極層が少なくとも配置されてなる第1有機EL部と、第3電極層、第2有機機能層及び第4電極層が少なくとも配置されてなる第2有機EL部と、を所定の間隔をあけて形成する形成工程と、
前記第1有機EL部と前記第2有機EL部とが互いに対向するように、前記第1有機EL部と前記第2有機EL部との間の領域を折り曲げ部分として前記基板を折り曲げる工程と、を含み、
前記形成工程において、前記第1電極層及び前記第3電極層と、前記第2電極層及び前記第4電極層とのうちの少なくとも一方を、前記折り曲げ部分に形成しない、有機EL素子の製造方法。 - 前記基板の前記一方の主面上に、前記第1電極層及び前記第1有機機能層と、前記第3電極層及び前記第2有機機能層とを形成した後に、前記第1有機機能層上、前記第2有機機能層上及び前記第1電極層と前記第3電極層との間の前記一方の主面上にわたって前記第2電極層及び前記第4電極層を一体に形成する、請求項6に記載の有機EL素子の製造方法。
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2018
- 2018-02-22 CN CN201880019527.5A patent/CN110447310A/zh active Pending
- 2018-02-22 WO PCT/JP2018/006444 patent/WO2018173614A1/ja unknown
- 2018-02-22 EP EP18772320.0A patent/EP3606292A4/en not_active Withdrawn
- 2018-02-22 US US16/496,241 patent/US20200020879A1/en not_active Abandoned
- 2018-02-22 KR KR1020197029703A patent/KR20190128195A/ko not_active Application Discontinuation
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WO2020044783A1 (ja) | 2018-08-29 | 2020-03-05 | Kyb株式会社 | 反転防止弁 |
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WO2018173614A1 (ja) | 2018-09-27 |
EP3606292A1 (en) | 2020-02-05 |
CN110447310A (zh) | 2019-11-12 |
KR20190128195A (ko) | 2019-11-15 |
JP6647237B2 (ja) | 2020-02-14 |
EP3606292A4 (en) | 2020-11-18 |
US20200020879A1 (en) | 2020-01-16 |
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