JP2014225661A - 発光素子、発光装置、表示装置、電子機器及び照明装置 - Google Patents
発光素子、発光装置、表示装置、電子機器及び照明装置 Download PDFInfo
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- JP2014225661A JP2014225661A JP2014091165A JP2014091165A JP2014225661A JP 2014225661 A JP2014225661 A JP 2014225661A JP 2014091165 A JP2014091165 A JP 2014091165A JP 2014091165 A JP2014091165 A JP 2014091165A JP 2014225661 A JP2014225661 A JP 2014225661A
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- 239000000126 substance Substances 0.000 claims abstract description 71
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- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000005092 sublimation method Methods 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 description 1
- UGNWTBMOAKPKBL-UHFFFAOYSA-N tetrachloro-1,4-benzoquinone Chemical compound ClC1=C(Cl)C(=O)C(Cl)=C(Cl)C1=O UGNWTBMOAKPKBL-UHFFFAOYSA-N 0.000 description 1
- 125000000437 thiazol-2-yl group Chemical group [H]C1=C([H])N=C(*)S1 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- BWHDROKFUHTORW-UHFFFAOYSA-N tritert-butylphosphane Chemical compound CC(C)(C)P(C(C)(C)C)C(C)(C)C BWHDROKFUHTORW-UHFFFAOYSA-N 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- GWDUZCIBPDVBJM-UHFFFAOYSA-L zinc;2-(2-hydroxyphenyl)-3h-1,3-benzothiazole-2-carboxylate Chemical compound [Zn+2].OC1=CC=CC=C1C1(C([O-])=O)SC2=CC=CC=C2N1.OC1=CC=CC=C1C1(C([O-])=O)SC2=CC=CC=C2N1 GWDUZCIBPDVBJM-UHFFFAOYSA-L 0.000 description 1
- QEPMORHSGFRDLW-UHFFFAOYSA-L zinc;2-(2-hydroxyphenyl)-3h-1,3-benzoxazole-2-carboxylate Chemical compound [Zn+2].OC1=CC=CC=C1C1(C([O-])=O)OC2=CC=CC=C2N1.OC1=CC=CC=C1C1(C([O-])=O)OC2=CC=CC=C2N1 QEPMORHSGFRDLW-UHFFFAOYSA-L 0.000 description 1
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- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
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- H10K85/649—Aromatic compounds comprising a hetero atom
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
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- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6576—Polycyclic condensed heteroaromatic hydrocarbons comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
Abstract
Description
三重項励起エネルギーを発光に変換する方法としては代表的には、三重項励起準位からの直接発光であるりん光を利用する方法と、三重項励起準位から一重項励起準位への逆項間交差を経て、三重項励起エネルギーを一重項励起エネルギーに変換し、その一重項励起エネルギーを一重項励起準位から発光する遅延蛍光を利用する方法がある。
本実施の形態では実施の形態1で説明した発光素子の詳細な構造の例について図1(A)(B)を用いて以下に説明する。
本実施の形態では、実施の形態1に記載の発光素子を用いた発光装置について説明する。
本実施の形態では、実施の形態1に記載の発光素子を照明装置として用いる例を図6を参照しながら説明する。図6(B)は照明装置の上面図、図6(A)は図6(B)におけるe−f断面図である。
本実施の形態では、実施の形態1に記載の発光素子をその一部に含む電子機器の例について説明する。実施の形態1に記載の発光素子は発光効率の良好な発光素子であるため、当該発光素子を含む本実施の形態における電子機器は消費電力の小さい電子機器とすることができる。
まず、ガラス基板上に、酸化珪素を含むインジウム錫酸化物(ITSO)をスパッタリング法にて成膜し、第1の電極101を形成した。なお、その膜厚は110nmとし、電極面積は2mm×2mmとした。ここで、第1の電極101は、発光素子の陽極として機能する電極である。
比較発光素子1は、発光素子1における発光層113を4,6mCzP2Pmとルブレンとを、重量比1:0.005(=4,6mCzP2Pm:ルブレン)となるように40nm共蒸着して作製した。その他の材料、構成はすべて発光素子1と同一である。すなわち、比較発光素子1は、発光素子1において、第2の有機化合物を用いない発光素子ということができる。
まず、ガラス基板上に、酸化珪素を含むインジウム錫酸化物(ITSO)をスパッタリング法にて成膜し、第1の電極101を形成した。なお、その膜厚は110nmとし、電極面積は2mm×2mmとした。ここで、第1の電極101は、発光素子の陽極として機能する電極である。
比較発光素子2は、発光素子2における発光層113を4,6mCzP2Pmとクマリン6とを、重量比1:0.005(=4,6mCzP2Pm:クマリン6)となるように40nm共蒸着して作製した。その他の材料、構成はすべて発光素子2と同一である。すなわち、比較発光素子2は、発光素子2において、第2の有機化合物を用いない発光素子ということができる。
まず、ガラス基板上に、酸化珪素を含むインジウム錫酸化物(ITSO)をスパッタリング法にて成膜し、第1の電極101を形成した。なお、その膜厚は110nmとし、電極面積は2mm×2mmとした。ここで、第1の電極101は、発光素子の陽極として機能する電極である。
比較発光素子3は、発光素子3における発光層113を4,6mCzP2PmとDCJTBとを、重量比1:0.005(=4,6mCzP2Pm:DCJTB)となるように40nm共蒸着して作製した。その他の材料、構成はすべて発光素子3と同一である。すなわち、比較発光素子3は、発光素子3において、第2の有機化合物を用いない発光素子ということができる。
本参考例では、実施例で用いたN−(1,1’−ビフェニル−4−イル)−9,9−ジメチル−N−[4−(9−フェニル−9H−カルバゾール−3−イル)フェニル]−9H−フルオレン−2−アミン(略称:PCBBiF)の合成方法について説明する。
1L三口フラスコに、N−(1,1’−ビフェニル−4−イル)−9,9−ジメチル−9H−フルオレン−2−アミン45g(0.13mol)と、ナトリウムtert−ブトキシド36g(0.38mol)と、ブロモベンゼン21g(0.13mol)と、トルエン500mLを入れた。この混合物を減圧しながら撹拌することで脱気し、脱気後、フラスコ内を窒素置換した。その後、ビス(ジベンジリデンアセトン)パラジウム(0)0.8g(1.4mmol)と、トリ(tert−ブチル)ホスフィン(10wt%ヘキサン溶液)12mL(5.9mmol)を加えた。ステップ1の合成スキームを下に示す。
1Lマイヤーフラスコに、N−(1,1’−ビフェニル−4−イル)−9,9−ジメチル−N−フェニル−9H−フルオレン−2−アミン45g(0.10mol)を入れ、トルエン225mLを加えて加熱しながら撹拌して溶解した。この溶液を室温まで放冷した後、酢酸エチル225mLを加えて、N−ブロモこはく酸イミド(略称:NBS)18g(0.10mol)を加えて、2.5時間室温にて撹拌した。撹拌終了後、この混合物を飽和炭酸水素ナトリウム水溶液で3回、飽和食塩水で1回洗浄した。得られた有機層に硫酸マグネシウムを加えて2時間静置し、乾燥した。この混合物を自然濾過して硫酸マグネシウムを除去し、得られた濾液を濃縮したところ、黄色液体を得た。この黄色液体をトルエンと混合し、この溶液をセライト、アルミナ、フロリジールを用いて精製した。得られた溶液を濃縮して淡黄色固体を得た。この淡黄色固体をトルエン/エタノールにて再結晶したところ、目的物の白色粉末を収量47g、収率89%で得た。ステップ2の合成スキームを下に示す。
1L三口フラスコにN−(1,1’−ビフェニル−4−イル)−N−(4−ブロモフェニル)−9,9−ジメチル−9H−フルオレン−2−アミン41g(80mmol)、9−フェニル−9H−カルバゾール−3−イルボロン酸25g(88mmol)を入れ、トルエン240mLとエタノール80mLと炭酸カリウム水溶液(2.0mol/L)120mLを加えて、この混合物を減圧しながら撹拌することで脱気し、脱気後、フラスコ内を窒素置換した。さらに、酢酸パラジウム(II)27mg(0.12mmol)、トリ(オルト−トリル)ホスフィン154mg(0.5mmol)を加え、再度、減圧しながら撹拌することで脱気し、脱気後、フラスコ内を窒素置換した。この混合物を窒素気流下、110℃で1.5時間撹拌した。ステップ3の合成スキームを示す。
1H NMR(CDCl3,500MHz):δ=1.45(s、6H)、7.18(d、J=8.0Hz、1H)、7.27−7.32(m、8H)、7.40−7.50(m、7H)、7.52−7.53(m、2H)、7.59−7.68(m、12H)、8.19(d、J=8.0Hz、1H)、8.36(d、J=1.1Hz、1H)。
102 第2の電極
103 有機化合物を含む層
111 正孔注入層
112 正孔輸送層
113 発光層
114 電子輸送層
115 電子注入層
400 基板
401 第1の電極
403 有機化合物を含む層
404 第2の電極
405 シール材
406 シール材
407 封止基板
408 空間
412 パッド
420 ICチップ
501 第1の電極
502 第2の電極
511 第1の発光ユニット
512 第2の発光ユニット
513 電荷発生層
601 駆動回路部(ソース線駆動回路)
602 画素部
603 駆動回路部(ゲート線駆動回路)
604 封止基板
605 シール材
607 空間
608 配線
609 FPC(フレキシブルプリントサーキット)
610 素子基板
611 スイッチング用TFT
612 電流制御用TFT
613 第1の電極
614 絶縁物
616 有機化合物を含む層
617 第2の電極
618 発光素子
623 nチャネル型TFT
624 pチャネル型TFT
901 筐体
902 液晶層
903 バックライトユニット
904 筐体
905 ドライバIC
906 端子
951 基板
952 電極
953 絶縁層
954 隔壁層
955 有機化合物を含む層
956 電極
1001 基板
1002 下地絶縁膜
1003 ゲート絶縁膜
1006 ゲート電極
1007 ゲート電極
1008 ゲート電極
1020 第1の層間絶縁膜
1021 第2の層間絶縁膜
1022 電極
1024W 発光素子の第1の電極
1024R 発光素子の第1の電極
1024G 発光素子の第1の電極
1024B 発光素子の第1の電極
1025 隔壁
1028 有機化合物を含む層
1029 発光素子の第2の電極
1031 封止基板
1032 シール材
1033 透明な基材
1034R 赤色の着色層
1034G 緑色の着色層
1034B 青色の着色層
1035 黒色層(ブラックマトリックス)
1036 オーバーコート層
1037 第3の層間絶縁膜
1040 画素部
1041 駆動回路部
1042 周辺部
2001 筐体
2002 光源
3001 照明装置
5000 表示領域
5001 表示領域
5002 表示領域
5003 表示領域
5004 表示領域
5005 表示領域
7101 筐体
7103 表示部
7105 スタンド
7107 表示部
7109 操作キー
7110 リモコン操作機
7201 本体
7202 筐体
7203 表示部
7204 キーボード
7205 外部接続ポート
7206 ポインティングデバイス
7210 第2の表示部
7301 筐体
7302 筐体
7303 連結部
7304 表示部
7305 表示部
7306 スピーカ部
7307 記録媒体挿入部
7308 LEDランプ
7309 操作キー
7310 接続端子
7311 センサ
7401 筐体
7402 表示部
7403 操作ボタン
7404 外部接続ポート
7405 スピーカ
7406 マイク
9033 留め具
9034 スイッチ
9035 電源スイッチ
9036 スイッチ
9630 筐体
9631 表示部
9631a 表示部
9631b 表示部
9632a タッチパネル領域
9632b タッチパネル領域
9633 太陽電池
9634 充放電制御回路
9635 バッテリー
9636 DCDCコンバータ
9637 操作キー
9638 コンバータ
9639 ボタン
Claims (18)
- 第1の電極と、
第2の電極と、
前記第1の電極及び前記第2の電極との間に形成された有機化合物を含む層とを有し、
前記有機化合物を含む層は、少なくとも第1の有機化合物と第2の有機化合物と、蛍光物質とを含む発光層を有し、
前記第1の有機化合物は電子輸送性を有する物質であり、
前記第2の有機化合物は正孔輸送性を有する物質であり、
前記第2の有機化合物は、トリアリールアミン骨格を有し、前記トリアリールアミン骨格の3つのアリール基のうち、少なくとも一つがp−ビフェニル骨格を含む基である発光素子。 - 請求項1において、前記トリアリールアミン骨格の3つのアリール基のうち、少なくとも2つがp−ビフェニル骨格を含む基である発光素子。
- 第1の電極と、
第2の電極と、
前記第1の電極及び前記第2の電極との間に形成された有機化合物を含む層とを有し、
前記有機化合物を含む層は、少なくとも第1の有機化合物と第2の有機化合物と、蛍光物質とを含む発光層を有し、
前記第1の有機化合物は電子輸送性を有する物質であり、
前記第2の有機化合物は正孔輸送性を有する物質であり、
前記第2の有機化合物は、トリアリールアミン骨格を有し、前記トリアリールアミン骨格の3つのアリール基のうち、少なくとも一つがフルオレン骨格を含む基である発光素子。 - 第1の電極と、
第2の電極と、
前記第1の電極及び前記第2の電極との間に形成された有機化合物を含む層とを有し、
前記有機化合物を含む層は、少なくとも第1の有機化合物と第2の有機化合物と、蛍光物質とを含む発光層を有し、
前記第1の有機化合物は電子輸送性を有する物質であり、
前記第2の有機化合物は正孔輸送性を有する物質であり、
前記第2の有機化合物は、トリアリールアミン骨格を有し、前記トリアリールアミン骨格の3つのアリール基のうち、少なくとも一つが置換又は無置換のp−ビフェニル基である発光素子。 - 請求項4において、前記トリアリールアミン骨格の3つのアリール基のうち、少なくとも二つが置換又は無置換のp−ビフェニル基である発光素子。
- 第1の電極と、
第2の電極と、
前記第1の電極及び前記第2の電極との間に形成された有機化合物を含む層とを有し、
前記有機化合物を含む層は、少なくとも第1の有機化合物と第2の有機化合物と、蛍光物質とを含む発光層を有し、
前記第1の有機化合物は電子輸送性を有する物質であり、
前記第2の有機化合物は正孔輸送性を有する物質であり、
前記第2の有機化合物は、トリアリールアミン骨格を有し、前記トリアリールアミン骨格の3つのアリール基のうち、少なくとも一つが置換又は無置換のフルオレン−2−イル基である発光素子。 - 請求項3乃至請求項6のいずれか一項において、前記第2の有機化合物における前記トリアリールアミン骨格において、さらに、少なくとも一つのアリール基がp−ビフェニル骨格を含む基である発光素子。
- 請求項7において、前記p−ビフェニル骨格を含む基は、置換又は無置換のp−ビフェニル基、置換又は無置換のフルオレン−2−イル基、置換又は無置換のスピロフルオレニル基及び置換又は無置換の4−(9−フェニル−9H−カルバゾール−3−イル)フェニル基のいずれか一である発光素子。
- 請求項4又は請求項5において、前記第2の有機化合物における前記トリアリールアミン骨格において、さらに少なくとも一つのアリール基が置換又は無置換の4−(9−フェニル−9H−カルバゾール−3−イル)フェニル基である発光素子。
- 請求項1乃至請求項9のいずれか一項において、前記第2の有機化合物がナフタレン骨格を含まない物質である発光素子。
- 請求項1乃至請求項10のいずれか一項において、
前記第1の有機化合物と前記第2の有機化合物が励起錯体を形成する発光素子。 - 請求項1乃至請求項11のいずれか一項において、
前記第1の有機化合物と前記第2の有機化合物の三重項励起エネルギーは、
前記第1の有機化合物と前記第2の有機化合物からなる励起錯体の発光波長に相当するエネルギーよりも大きいことを特徴とする発光素子。 - 請求項12において、前記蛍光物質の最大発光波長は、前記第1の有機化合物と前記第2の有機化合物が形成する励起錯体の最大発光波長より長波長であることを特徴とする発光素子。
- 請求項1乃至請求項13のいずれか一項に記載の発光素子における発光が、遅延蛍光成分を含むことを特徴とする発光素子。
- 請求項1乃至請求項14のいずれか一に記載の発光素子を有する照明装置。
- 請求項1乃至請求項14のいずれか一に記載の発光素子と、前記発光素子を制御する手段を備えた発光装置。
- 請求項1乃至請求項14のいずれか一に記載の発光素子を表示部に有し、前記発光素子を制御する手段を備えた表示装置。
- 請求項1乃至請求項14のいずれか一に記載の発光素子を有する電子機器。
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TWI733065B (zh) | 2012-08-03 | 2021-07-11 | 日商半導體能源研究所股份有限公司 | 發光元件、發光裝置、顯示裝置、電子裝置及照明設備 |
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KR102137376B1 (ko) | 2012-08-03 | 2020-07-24 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 발광 소자, 발광 장치, 표시 장치, 전자 기기, 및 조명 장치 |
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2014
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- 2014-04-25 TW TW107117260A patent/TWI664762B/zh not_active IP Right Cessation
- 2014-04-25 KR KR20140049898A patent/KR20140128262A/ko not_active IP Right Cessation
- 2014-04-25 TW TW108112878A patent/TWI712194B/zh active
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2018
- 2018-07-27 US US16/047,475 patent/US10833279B2/en active Active
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2019
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2021
- 2021-08-12 KR KR1020210106706A patent/KR20210107564A/ko not_active Application Discontinuation
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2023
- 2023-01-25 KR KR1020230009497A patent/KR20230018509A/ko not_active Application Discontinuation
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US11322689B2 (en) | 2015-03-09 | 2022-05-03 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting element, display device, electronic device, and lighting device |
JP2016171318A (ja) * | 2015-03-09 | 2016-09-23 | 株式会社半導体エネルギー研究所 | 発光素子、表示装置、電子機器、及び照明装置 |
US10811611B2 (en) | 2015-03-09 | 2020-10-20 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting element, display device, electronic device, and lighting device |
JP2021044576A (ja) * | 2015-03-09 | 2021-03-18 | 株式会社半導体エネルギー研究所 | 発光素子、表示装置、電子機器および照明装置 |
US11038134B2 (en) | 2015-03-09 | 2021-06-15 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting element, display device, electronic device, and lighting device |
JP2016171319A (ja) * | 2015-03-09 | 2016-09-23 | 株式会社半導体エネルギー研究所 | 発光素子、表示装置、電子機器、及び照明装置 |
JP7066811B2 (ja) | 2015-03-09 | 2022-05-13 | 株式会社半導体エネルギー研究所 | 発光素子、表示装置、電子機器および照明装置 |
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JP2021119623A (ja) * | 2015-05-29 | 2021-08-12 | 株式会社半導体エネルギー研究所 | 発光素子、発光装置、電子機器、照明装置 |
KR20190048098A (ko) * | 2017-10-30 | 2019-05-09 | 주식회사 엘지화학 | 공중합체, 및 이를 포함하는 유기발광소자 |
KR102352350B1 (ko) | 2017-10-30 | 2022-01-17 | 주식회사 엘지화학 | 공중합체, 및 이를 포함하는 유기발광소자 |
Also Published As
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KR20210107564A (ko) | 2021-09-01 |
JP2019149550A (ja) | 2019-09-05 |
TWI712194B (zh) | 2020-12-01 |
US10043982B2 (en) | 2018-08-07 |
TWI631742B (zh) | 2018-08-01 |
US10833279B2 (en) | 2020-11-10 |
TW201832394A (zh) | 2018-09-01 |
TW201448313A (zh) | 2014-12-16 |
TW201943111A (zh) | 2019-11-01 |
KR20140128262A (ko) | 2014-11-05 |
TWI664762B (zh) | 2019-07-01 |
KR20230018509A (ko) | 2023-02-07 |
US20180351110A1 (en) | 2018-12-06 |
US20140319492A1 (en) | 2014-10-30 |
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