JP2021070676A - 有機化合物及び有機発光素子 - Google Patents
有機化合物及び有機発光素子 Download PDFInfo
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- JP2021070676A JP2021070676A JP2019200318A JP2019200318A JP2021070676A JP 2021070676 A JP2021070676 A JP 2021070676A JP 2019200318 A JP2019200318 A JP 2019200318A JP 2019200318 A JP2019200318 A JP 2019200318A JP 2021070676 A JP2021070676 A JP 2021070676A
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Abstract
Description
Σ|CH|>Σ|CL| ・・・(1)
(CH:母骨格のHOMOにおける置換部位の炭素の2PZ原子軌道係数とする)
(CL:母骨格のLUMOにおける置換部位の炭素の2PZ原子軌道係数とする)
図1は、有機化合物の分子軌道の一例のダイアグラムである。図1(a)には、M(HOMO)、M(LUMO)が記載されており、母骨格のみのエネルギーを表す。一方、M−A(HOMO)、M−A(LUMO)は、母骨格に電子求引基が導入された有機化合物のエネルギーを表す。電子求引基を導入された場合、HOMOおよびLUMOは、いずれもエネルギーが低い位置に変化する。エネルギーが低い位置とは図1(a)において、紙面下側である。
Σ|CH|>Σ|CL| ・・・(1)
(CH:母骨格のHOMOにおける置換部位の炭素の2PZ原子軌道係数である。)
(CL:母骨格のLUMOにおける置換部位の炭素の2PZ原子軌道係数である。)
式(1)を満たすことで、置換基が導入されることにより、分子軌道が受ける影響が、HOMOの方がLUMOよりも大きいことを表している。すなわち、式(1)を満たす位置に電子求引基を導入することで、HOMOが低くなる量が、LUMOが低くなる量よりも大きくすることができる。
E−Eb≦−1.51 (eV)・・・(2)
式(2)において、Eは前記母骨格に設けられた置換基のLUMO準位であり、Ebは前記置換基から前記電子求引基を除いた構造のLUMO準位を表す。これらの値は、例えばB3LYP/6−31G*、B3LYP/6−31G4を用いて計算することが可能である。このエネルギーの単位は、eVである。
図1(b)には、M(HOMO)、M(LUMO)が記載されており、図1(a)と同様に母骨格のみのエネルギーを表す。一方、M−D(HOMO)、M−D(LUMO)は、母骨格に電子供与基が導入された有機化合物のエネルギーを表す。電子供与基を導入された場合、HOMOおよびLUMOは、いずれもエネルギーが高い位置に変化する。エネルギーが高い位置とは、図1(b)において、紙面上側である。
(2)−1 電子供与基(D)は母骨格(M)において両隣の炭素原子のうち少なくとも一つが置換基の導入が可能な炭素原子に設けられること
(2)−2 電子供与基が結合している炭素原子の自然結合軌道(NBO)の電荷値が、両隣のいずれの炭素原子の自然結合軌道の電荷値以下であること
(2)−3 電子供与基が結合している炭素原子の自然結合軌道(NBO)の電荷値は両隣の炭素原子のNBO電荷値のいずれよりも0.02以上小さいこと
(2)−1は、その隣接炭素原子のうち一方には、置換基導入可能な炭素電子である構造を示している。(2)−1、(2)−2および(2)−3は隣接する炭素原子よりも電子密度が高いことを意味する。母骨格の例として以下の化合物を示す。またそのNBO電荷の計算値を表1に示す。
炭素原子からなる5員環構造が2つ以上含まれることが好ましい。例えば、前述の構造式のように5員環を含む分子骨格としてフルオランテン構造を確認できるような部分を二つ以上具備することが好ましい。
電子求引基または電子供与基と、母骨格と、が結合する場合には、当該結合は炭素−炭素結合であることが好ましい。これは炭素−炭素結合がその他の結合と比べて強い結合であるためである。すなわち、母骨格と置換基との結合は炭素−炭素結合であることで、有機化合物の安定性が高まるので好ましい。以下に各結合のエネルギーについて図1(e)に示す。
以下、本発明の一実施形態に係る有機発光素子について説明する。
(1)(基板/)陽極/発光層/電子注入層/陰極
(2)(基板/)陽極/正孔輸送層/電子輸送層/電子注入層/陰極
(3)(基板/)陽極/正孔輸送層/発光層/電子輸送層/電子注入層/陰極
(4)(基板/)陽極/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
(5)(基板/)陽極/正孔輸送層/発光層/ブロッキング層/電子輸送層/電子注入層/陰極
(6)(基板/)陽極/正孔注入層/正孔輸送層/発光層/ブロッキング層/電子輸送層/電子注入層/陰極
本実施形態の有機発光素子において、上記有機化合物層の少なくとも一層に本実施形態に係る有機化合物が含まれている。具体的には、本実施形態に係る有機化合物は、上述したホール注入層、ホール輸送層、電子ブロッキング層、発光層、ホール・エキシトンブロッキング層、電子輸送層、電子注入層等のいずれかに含まれている。本実施形態の係る有機化合物は、好ましくは、発光層に含まれる。
有機発光素子は、基板の上に、陽極、有機化合物層、陰極を形成して設けられる。陰極の上には、保護層、カラーフィルタ等を設けてよい。カラーフィルタを設ける場合は、保護層との間に平坦化層を設けてよい。平坦化層はアクリル樹脂等で構成することができる。
基板は、石英、ガラス、シリコンウエハ、樹脂、金属等が挙げられる。また、基板上には、トランジスタなどのスイッチング素子や配線を備え、その上に絶縁層を備えてもよい。絶縁層としては、陽極と配線の導通を確保するために、コンタクトホールを形成可能で、かつ接続しない配線との絶縁を確保できれば、材料は問わない。例えば、ポリイミド等の樹脂、酸化シリコン、窒化シリコンなどを用いることができる。
電極は、一対の電極を用いることができる。一対の電極は、陽極と陰極であってよい。有機発光素子が発光する方向に電界を印加する場合に、電位が高い電極が陽極であり、他方が陰極である。また、発光層にホールを供給する電極が陽極であり、電子を供給する電極が陰極であるということもできる。
陰極の上に、保護層を設けてもよい。例えば、陰極上に吸湿剤を設けたガラスを接着することで、有機化合物層に対する水等の浸入を抑え、表示不良の発生を抑えることができる。また、別の実施形態としては、陰極上に窒化ケイ素等のパッシベーション膜を設け、有機化合物層に対する水等の浸入を抑えてもよい。例えば、陰極形成後に真空を破らずに別のチャンバーに搬送し、CVD法で厚さ2μmの窒化ケイ素膜を形成することで、保護層としてもよい。CVD法の成膜の後で原子堆積法(ALD法)を用いた保護層を設けてもよい。
保護層の上にカラーフィルタを設けてもよい。例えば、有機発光素子のサイズを考慮したカラーフィルタを別の基板上に設け、それと有機発光素子を設けた基板と貼り合わせてもよいし、上記で示した保護層上にフォトリソグラフィ技術を用いて、カラーフィルタをパターニングしてもよい。カラーフィルタは、高分子で構成されてよい。
カラーフィルタと保護層との間に平坦化層を有してもよい。平坦化層は有機化合物で構成されてよく、低分子であっても、高分子であってもよいが、高分子であることが好ましい。
平坦化層の上には、対向基板を有してよい。対向基板は、前述の基板と対応する位置に設けられるため、対向基板と呼ばれる。対向基板の構成材料は、前述の基板と同じであってよい。
本発明の一実施形態に係る有機発光素子を構成する有機化合物層(正孔注入層、正孔輸送層、電子阻止層、発光層、正孔阻止層、電子輸送層、電子注入層等)は、以下に示す方法により形成される。
本発明の一実施形態に係る有機発光素子は、表示装置や照明装置の構成部材として用いることができる。他にも、電子写真方式の画像形成装置の露光光源や液晶表示装置のバックライト、白色光源にカラーフィルタを有する発光装置等の用途がある。
例示化合物C1乃至C25について、以下の方法で発光波長の計算を行った。以下の例示化合物C1乃至C25の母骨格はE11,F11,およびG11である。
B3LYP/6−31G*で計算した最安定構造に対して時間依存密度汎関数法(TD−B3LYP/6−31G*)によって計算される基底状態から励起状態への遷移波長を計算波長とする。
各原子における自然結合軌道(NBO)電荷は以下のように計算する。B3LYP/6−31G*法によって計算される電子状態について、自然結合軌道(NBO)法解析[1]を行うことで、各原子の自然電子密度が得られる。各原子における自然電子密度と正電荷密度にあたる原子番号の和がNBO電荷である。NBO電荷は各原子における電気的偏りを示す指標である。(Weinhold, F.; Landis, C. R. (2001). “Natural bond orbitals and extensions of localized bonding concepts”. Chem. Educ. Res. Pract. Eur. 2: 91-104.)
上記に示した分子軌道計算には、現在広く用いられているGaussian 09(Gaussian 09,Revision C.01,M.J.Frisch,G.W.Trucks,H.B.Schlegel,G.E.Scuseria,M.A.Robb,J.R.Cheeseman,G.Scalmani,V.Barone,B.Mennucci,G.A.Petersson,H.Nakatsuji,M.Caricato,X.Li,H.P.Hratchian,A.F.Izmaylov,J.Bloino,G.Zheng,J.L.Sonnenberg,M.Hada,M.Ehara,K.Toyota,R.Fukuda,J.Hasegawa,M.Ishida,T.Nakajima,Y.Honda,O.Kitao,H.Nakai,T.Vreven,J.A.Montgomery,Jr.,J.E.Peralta,F.Ogliaro,M.Bearpark,J.J.Heyd,E.Brothers,K.N.Kudin,V.N.Staroverov,T.Keith,R.Kobayashi,J.Normand,K.Raghavachari,A.Rendell,J.C.Burant,S.S.Iyengar,J.Tomasi,M.Cossi,N.Rega,J.M.Millam,M.Klene,J.E.Knox,J.B.Cross,V.Bakken,C.Adamo,J.Jaramillo,R.Gomperts,R.E.Stratmann,O.Yazyev,A.J.Austin,R.Cammi,C.Pomelli,J.W.Ochterski,R.L.Martin,K.Morokuma,V.G.Zakrzewski,G.A.Voth,P.Salvador,J.J.Dannenberg,S.Dapprich,A.D.Daniels,O.Farkas,J.B.Foresman,J.V.Ortiz,J.Cioslowski,and D.J.Fox,Gaussian,Inc.,Wallingford CT,2010.)により実施した。
一般式E11、F11、G11で表される有機化合物の例として、例示化合物C3、C25について合成例を示す。
200mlのナスフラスコに、以下に示す試薬、溶媒を仕込んだ。
化合物E1:2.10g(10mmol)
化合物E2:2.46g(10mmol)
エタノール:100ml
次に、反応溶液を、窒素気流下で70℃に加熱し、KOHエタノール溶液を滴下した。さらに、この温度(70℃)で6時間攪拌を行った。反応終了後、水を加えて、沈殿物を濾過した。濾過物を、メタノールで分散洗浄を行うことにより、黒灰色の化合物S3を3.15g(収率:75%)得た。
100mlのナスフラスコに、以下に示す試薬、溶媒を仕込んだ。
化合物S3:2.94g(7mmol)
化合物S4:2.25g(9mmol)
亜硝酸イソアミル:1.05g(9mmol)
トルエン:40ml
次に、反応溶液を、窒素気流下で110℃に加熱しこの温度(80℃)で3時間攪拌を行った。反応終了後、水40mlで2回洗浄した。この有機層を飽和食塩水で洗浄し,硫酸マグネシウムで乾燥した後、この溶液を濾過後、濾液を濃縮して茶褐色液体を得た。これをカラムクロマトグラフィー(クロロホルム/ヘプタン=1:4)にて精製後、クロロホルム/メタノールで再結晶を行い、黄色結晶のS5を3.46g(収率:85%)得た。
200mlのナスフラスコに、以下に示す試薬、溶媒を仕込んだ。
化合物S5:1.75g(3mmol)
化合物S6:0.67g(3mmol)
Pd(PPh3)4:0.2g
トルエン:50ml
エタノール:20ml
2M−炭酸ナトリウム水溶液:50ml
次に、反応溶液を、窒素気流下で80℃に加熱しこの温度(80℃)で6時間攪拌を行った。反応終了後、水を加えて分液を行った後、クロロホルムに溶解した後、これをカラムクロマトグラフィー(クロロホルム)にて精製後、クロロホルム/メタノールで再結晶を行うことにより、黄色結晶の化合物S7を1.53g(収率:75%)得た。
20mlのナスフラスコに、以下に示す試薬、溶媒を仕込んだ。
化合物S7:680mg(1mmol)
Pd(dba)2:238mg
P(Cy)3(トリシクロヘキシルフォスフィン):280mg
DBU(ジアザビシクロウンデセン):0.15ml
DMF:5ml
次に、反応溶液を、窒素気流下で145℃に加熱しこの温度(145℃)で6時間攪拌を行った。反応終了後、エタノールを加えて結晶を析出させた後に結晶をろ別し、水、エタノール、ヘプタンで順次分散洗浄を行った。次に、得られた紫色結晶をトルエンに加熱溶解した後、熱時ろ過、トルエン/メタノールで再結晶を行うことにより、濃赤色の例示化合物C3を0.50g(収率:78%)得た。
実測値:m/z=642.85 計算値:C46H20N4=642.75
[合成例2]例示化合物C25の合成
200mlのナスフラスコに、以下に示す試薬、溶媒を仕込んだ。
化合物S11:1.82g(10mmol)
化合物S2:2.46g(10mmol)
エタノール:100ml
次に、反応溶液を、窒素気流下で70℃に加熱し、KOHエタノール溶液を滴下した。さらに、この温度(70℃)で6時間攪拌を行った。反応終了後、水を加えて、沈殿物を濾過した。濾過物を、メタノールで分散洗浄を行うことにより、黒灰色の化合物S11を2.94g(収率:75%)得た。
100mlのナスフラスコに、以下に示す試薬、溶媒を仕込んだ。
化合物S11:2.75g(7mmol)
化合物S4:2.25g(9mmol)
亜硝酸イソアミル:1.05g(9mmol)
トルエン:40ml
次に、反応溶液を、窒素気流下で110℃に加熱しこの温度(80℃)で3時間攪拌を行った。反応終了後、水40mlで2回洗浄した。この有機層を飽和食塩水で洗浄し,硫酸マグネシウムで乾燥した後、この溶液を濾過後、濾液を濃縮して茶褐色液体を得た。これをカラムクロマトグラフィー(クロロホルム/ヘプタン=1:4)にて精製後、クロロホルム/メタノールで再結晶を行い、黄色結晶のE5を3.30g(収率:85%)得た。
200mlのナスフラスコに、以下に示す試薬、溶媒を仕込んだ。
化合物S12:1.66g(3mmol)
化合物S8:0.71g(3mmol)
Pd(PPh3)4:0.2g
トルエン:50ml
エタノール:20ml
2M−炭酸ナトリウム水溶液:50ml
次に、反応溶液を、窒素気流下で80℃に加熱しこの温度(80℃)で6時間攪拌を行った。反応終了後、水を加えて分液を行った後、クロロホルムに溶解した後、これをカラムクロマトグラフィー(クロロホルム)にて精製後、クロロホルム/メタノールで再結晶を行うことにより、黄色結晶の化合物S7を1.50g(収率:75%)得た。
20mlのナスフラスコに、以下に示す試薬、溶媒を仕込んだ。
化合物S7:670mg(1mmol)
Pd(dba)2:238mg
P(Cy)3(トリシクロヘキシルフォスフィン):280mg
DBU(ジアザビシクロウンデセン):0.15ml
DMF:5ml
次に、反応溶液を、窒素気流下で145℃に加熱しこの温度(145℃)で6時間攪拌を行った。反応終了後、エタノールを加えて結晶を析出させた後に結晶をろ別し、水、エタノール、ヘプタンで順次分散洗浄を行った。次に、得られた紫色結晶をトルエンに加熱溶解した後、熱時ろ過、トルエン/メタノールで再結晶を行うことにより、濃赤色の例示化合物C3を0.49g(収率:78%)得た。
[MALDI−TOF−MS]
実測値:m/z=628.80 計算値:C46H20N4=628.72
実施例1乃至5の有機化合物は、一般式G11で表される有機化合物である。これら有機化合物は、電子求引基の置換基位置が式(1)を満たし、かつ、電子供与基の置換位置が(2)−1乃至(2)−3を満たしている。実施例1乃至5では、有機化合物の発光波長が、電子求引基および電子供与基の効果により短波長化している。
実施例6乃至9の有機化合物は、一般式E1で表される有機化合物である。これら有機化合物は、電子求引基の置換位置が式(1)を満たしている。一般式E1で表される有機化合物は、電子求引基の効果により短波長化している。
実施例10乃至17の有機化合物は、電子求引基の置換位置が式(1)を満たし、かつ、電子供与基の置換位置が(2)を満たしている。実施例1乃至9で示した有機化合物以外の一般式に属する化合物においても短波長化することが分かる。
実施例18乃至22の有機化合物は、式(1)の条件を満たしているものの、電子供与基が電子求引基の他に設けられている。電子求引基の置換位置が(2)を満たしていないため、化合物全体としては、母骨格よりも長波長化している。しかし、電子求引基を設けない場合と比べると、短波長化しているため、評価は、〇と×との間で△としている。電子求引基を設けることで短波長化の効果を奏しているものの、電子供与基の条件を満たす方がさらに好ましい。
図1(d)に示すように、実施例23の化合物C34の電子求引基はLUMOの軌道係数の無い母骨格の末端の芳香環の炭素に置換している。C34は、(2)を満たすことで短波長化していることがわかる。
本実施例では、以下のように表5に示す構成の有機発光素子を作製した。具体的には、基板上に、陽極、正孔注入層、正孔輸送層、電子ブロッキング層、発光層、正孔ブロッキング層、電子輸送層、電子注入層、陰極が順次形成されたボトムエミッション型構造の有機発光素子である。
発光層のゲストを表6に示す化合物に変更した以外は、実施例24と同様にして、有機発光素子を作製した。なお、例示化合物A41と例示化合物C1、例示化合物A42と例示化合物C3、例示化合物B24と例示化合物C4は同じ化合物である。
有機発光素子の短波長化の効果は、有機発光素子の発光スペクトルの色度座標として評価した。作製した有機発光素子の発光スペクトルを測定した。電流電圧特性をヒューレッドパッカード社製・微小電流計4140Bで測定し、輝度および発光スペクトルはトプコン社製SR−3Aで測定した。発光スペクトルの測定は10mA/cm2の電流を流して測定した。
作製した有機発光素子について、電流密度100mA/cm2での連続駆動試験を行い、輝度劣化の半減寿命を測定した。判定基準は、180時間以上をA,180時間未満をB判定とした。結果を表6に示す。
本実施例では、表7に示す構成の有機発光素子を作製した。具体的には、基板上に陽極、正孔注入層、正孔輸送層、電子ブロッキング層、第一発光層、第二発光層、正孔ブロッキング層、電子輸送層、電子注入層、陰極が順次形成されたトップエミッション型構造の有機発光素子である。
表8に示される化合物に適宜変更する以外は、実施例33と同様の方法により有機発光素子を作製した。得られた素子について実施例33と同様に素子の特性を測定・評価した。判定基準は、180時間以上をA判定、180時間未満をB判定とした。測定の結果を表8に示す。
2 反射電極
3 絶縁層
4 有機化合物層
5 透明電極
6 保護層
7 カラーフィルタ
10 副画素
11 基板
12 絶縁層
13 ゲート電極
14 ゲート絶縁膜
15 半導体層
16 ドレイン電極
17 ソース電極
18 薄膜トランジスタ
19 絶縁膜
20 コンタクトホール
21 下部電極
22 有機化合物層
23 上部電極
24 第一保護層
25 第二保護層
26 有機発光素子
100 表示装置
1000 表示装置
1001 上部カバー
1002 フレキシブルプリント回路
1003 タッチパネル
1004 フレキシブルプリント回路
1005 表示パネル
1006 フレーム
1007 回路基板
1008 バッテリー
1009 下部カバー
1100 撮像装置
1101 ビューファインダ
1102 背面ディスプレイ
1103 操作部
1104 筐体
1200 電子機器
1201 表示部
1202 操作部
1203 筐体
1300 表示装置
1301 額縁
1302 表示部
1303 土台
1310 表示装置
1311 第一表示部
1312 第二表示部
1313 筐体
1314 屈曲点
1400 照明装置
1401 筐体
1402 光源
1403 回路基板
1404 光学フィルム
1405 光拡散部
1500 自動車
1501 テールランプ
1502 窓
1503 車体
Claims (18)
- 縮環構造である母骨格と、前記母骨格に結合した電子求引基と、前記母骨格に結合した電子供与基と、を有する有機化合物であって、前記電子求引基は、前記母骨格において以下の関係を満たす位置に結合していることを特徴とする有機化合物。
Σ|CH|>Σ|CL| ・・・(1)
(CH:母骨格のHOMOにおける置換部位の炭素の2PZ原子軌道係数とする)
(CL:母骨格のLUMOにおける置換部位の炭素の2PZ原子軌道係数とする) - 前記電子求引基が以下の式(2)を満たし、前記電子供与基は母骨格において両隣の炭素原子のうち少なくとも一つが置換基の導入が可能な炭素原子に設けられ、前記母骨格の前記電子供与基を有する炭素原子における自然結合軌道の電荷値が、前記炭素原子の隣の炭素原子における自然結合軌道の電荷値以下かつ、前記炭素原子の他方の隣の炭素原子における自然結合軌道の電荷値以下であることを特徴とする有機化合物。
E−Eb≦−1.51 (eV)・・・(2)
(E:前記母骨格に設けられた置換基のLUMO準位、Eb:前記置換基から前記電子求引基を除いた構造のLUMO準位) - 前記母骨格の前記電子供与基を有する炭素原子における自然結合軌道の電荷値が、前記炭素原子の両隣のいずれかの炭素原子における自然結合軌道の電荷値よりも、0.02以上小さいことを特徴とする請求項2に記載の有機化合物。
- 縮環構造である母骨格と、前記母骨格に結合した電子求引基と、前記母骨格に結合した電子供与基と、を有する有機化合物であって、
前記電子供与基は、母骨格において両隣の炭素原子のうち少なくとも一つが置換基の導入が可能な炭素原子に設けられ、前記母骨格の前記電子供与基を有する炭素原子における自然結合軌道の電荷値が、前記炭素原子の隣の炭素原子における自然結合軌道の電荷値以下かつ、前記炭素原子の他方の隣の炭素原子における自然結合軌道の電荷値以下であることを特徴とする有機化合物。 - 母骨格の中に5員環が一つ以上含まれることを特徴とする請求項1乃至4のいずれか一項に記載の有機化合物。
- 前記電子供与基はメチル基、エチル基、メトキシ基、エトキシ基、t−ブチル基およびそれらが置換したアリール基のいずれかであることを特徴とする請求項1乃至5のいずれか一項に記載の有機化合物。
- 前記電子求引基は、シアノ基、フッ素、塩素、臭素、およびこれらを有するアリール基のいずれかであることを特徴とする請求項1乃至6のいずれか一項に記載の有機化合物。
- 陽極と陰極と、
前記陽極と前記陰極との間に配置される有機化合物層と、を有する有機発光素子において、前記有機化合物層が、請求項1乃至7のいずれか一項に記載の有機化合物を有することを特徴とする有機発光素子。 - 前記有機化合物層が発光層であることを特徴とする、請求項8に記載の有機発光素子。
- 青色発光することを特徴とする請求項9に記載の有機発光素子。
- 前記発光層と積層して配置される別の発光層を更に有し、前記別の発光層は前記発光層が発する発光色とは異なる色を発光することを特徴とする請求項8または9に記載の有機発光素子。
- 白色発光することを特徴とする請求項11に記載の有機発光素子。
- カラーフィルタをさらに有することを特徴とする請求項1乃至12のいずれか一項に記載の有機発光素子。
- 複数の画素を有し、前記複数の画素の少なくとも一つが、請求項8乃至13のいずれか一項に記載の有機発光素子と、前記有機発光素子に接続されたトランジスタと、を有することを特徴とする表示装置。
- 複数のレンズを有する光学部と、前記光学部を通過した光を受光する撮像素子と、前記撮像素子が撮像した画像を表示する表示部と、を有し、
前記表示部は請求項8乃至13のいずれか一項に記載の有機発光素子を有することを特徴とする光電変換装置。 - 請求項8乃至13のいずれか一項に記載の有機発光素子を有する表示部と、前記表示部が設けられた筐体と、前記筐体に設けられ、外部と通信する通信部と、を有することを特徴とする電子機器。
- 請求項8乃至13のいずれか一項に記載の有機発光素子を有する光源と、前記光源が発する光を透過する光拡散部または光学フィルタと、を有することを特徴とする照明装置。
- 請求項8乃至13のいずれか一項に記載の有機発光素子を有する灯具と、前記灯具が設けられた機体と、を有することを特徴とする移動体。
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JP7379097B2 (ja) | 2019-11-07 | 2023-11-14 | キヤノン株式会社 | 有機化合物及び有機発光素子 |
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JP3781517B2 (ja) | 1997-07-22 | 2006-05-31 | 三井化学株式会社 | 有機電界発光素子 |
JP3829982B2 (ja) * | 2002-02-19 | 2006-10-04 | 財団法人石油産業活性化センター | 新規な縮合芳香族化合物及びそれを利用した有機エレクトロルミネッセンス素子 |
JP4325336B2 (ja) * | 2003-09-19 | 2009-09-02 | 東洋インキ製造株式会社 | 有機エレクトロルミネッセンス素子用材料および有機エレクトロルミネッセンス素子 |
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JP5911377B2 (ja) * | 2011-08-04 | 2016-04-27 | キヤノン株式会社 | 有機化合物およびこれを有する有機発光素子 |
JP6700825B2 (ja) * | 2016-02-09 | 2020-05-27 | キヤノン株式会社 | 有機光電変換素子、光エリアセンサ、撮像素子及び撮像装置 |
JP7102114B2 (ja) * | 2016-11-11 | 2022-07-19 | キヤノン株式会社 | 光電変換素子、撮像素子および撮像装置 |
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EP4053094A4 (en) | 2024-04-10 |
WO2021085131A1 (ja) | 2021-05-06 |
EP4053094A1 (en) | 2022-09-07 |
US20220267256A1 (en) | 2022-08-25 |
KR20220077141A (ko) | 2022-06-08 |
CN114650980A (zh) | 2022-06-21 |
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