KR102442210B1 - 유기 전계 발광 소자, 이의 제조 방법 및 이를 포함하는 유기 전계 발광 표시장치 - Google Patents
유기 전계 발광 소자, 이의 제조 방법 및 이를 포함하는 유기 전계 발광 표시장치 Download PDFInfo
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- KR102442210B1 KR102442210B1 KR1020170177437A KR20170177437A KR102442210B1 KR 102442210 B1 KR102442210 B1 KR 102442210B1 KR 1020170177437 A KR1020170177437 A KR 1020170177437A KR 20170177437 A KR20170177437 A KR 20170177437A KR 102442210 B1 KR102442210 B1 KR 102442210B1
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- South Korea
- Prior art keywords
- electron transport
- organic electroluminescent
- electrode
- layer
- forming
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 230000005525 hole transport Effects 0.000 claims abstract description 46
- 150000001875 compounds Chemical class 0.000 claims abstract description 36
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 10
- 150000002367 halogens Chemical class 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims description 54
- 239000007924 injection Substances 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 30
- 239000010409 thin film Substances 0.000 claims description 29
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 26
- 229910052747 lanthanoid Inorganic materials 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- WFUBYPSJBBQSOU-UHFFFAOYSA-M rubidium iodide Chemical compound [Rb+].[I-] WFUBYPSJBBQSOU-UHFFFAOYSA-M 0.000 claims description 22
- 229910010272 inorganic material Inorganic materials 0.000 claims description 21
- 239000011147 inorganic material Substances 0.000 claims description 21
- 150000002602 lanthanoids Chemical class 0.000 claims description 19
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical group [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 17
- 229910052783 alkali metal Inorganic materials 0.000 claims description 15
- 150000001340 alkali metals Chemical class 0.000 claims description 15
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 15
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 15
- 238000000151 deposition Methods 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 14
- 239000011780 sodium chloride Substances 0.000 claims description 13
- 239000011777 magnesium Substances 0.000 claims description 12
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims description 12
- JAAGVIUFBAHDMA-UHFFFAOYSA-M rubidium bromide Chemical compound [Br-].[Rb+] JAAGVIUFBAHDMA-UHFFFAOYSA-M 0.000 claims description 12
- FGDZQCVHDSGLHJ-UHFFFAOYSA-M rubidium chloride Chemical compound [Cl-].[Rb+] FGDZQCVHDSGLHJ-UHFFFAOYSA-M 0.000 claims description 12
- 239000011575 calcium Substances 0.000 claims description 10
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- 229910018068 Li 2 O Inorganic materials 0.000 claims description 7
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 7
- 239000002585 base Substances 0.000 claims description 7
- XJHCXCQVJFPJIK-UHFFFAOYSA-M caesium fluoride Inorganic materials [F-].[Cs+] XJHCXCQVJFPJIK-UHFFFAOYSA-M 0.000 claims description 7
- IMKMFBIYHXBKRX-UHFFFAOYSA-M lithium;quinoline-2-carboxylate Chemical compound [Li+].C1=CC=CC2=NC(C(=O)[O-])=CC=C21 IMKMFBIYHXBKRX-UHFFFAOYSA-M 0.000 claims description 7
- LYQFWZFBNBDLEO-UHFFFAOYSA-M caesium bromide Chemical compound [Br-].[Cs+] LYQFWZFBNBDLEO-UHFFFAOYSA-M 0.000 claims description 6
- AIYUHDOJVYHVIT-UHFFFAOYSA-M caesium chloride Chemical compound [Cl-].[Cs+] AIYUHDOJVYHVIT-UHFFFAOYSA-M 0.000 claims description 6
- XQPRBTXUXXVTKB-UHFFFAOYSA-M caesium iodide Chemical compound [I-].[Cs+] XQPRBTXUXXVTKB-UHFFFAOYSA-M 0.000 claims description 6
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- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 3
- 229910052691 Erbium Inorganic materials 0.000 claims description 3
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- 229910052689 Holmium Inorganic materials 0.000 claims description 3
- 229910052765 Lutetium Inorganic materials 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 3
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- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 claims description 3
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 3
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 3
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- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 3
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- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
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- 229910052705 radium Inorganic materials 0.000 claims description 3
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 claims description 3
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- 229910052712 strontium Inorganic materials 0.000 claims description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 3
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 claims description 3
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 claims description 3
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical group [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 248
- 239000000463 material Substances 0.000 description 37
- 239000004065 semiconductor Substances 0.000 description 21
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- 101100489584 Solanum lycopersicum TFT1 gene Proteins 0.000 description 15
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- 230000000052 comparative effect Effects 0.000 description 11
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- 239000000872 buffer Substances 0.000 description 7
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- 239000003990 capacitor Substances 0.000 description 5
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- 229910052741 iridium Inorganic materials 0.000 description 5
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- NGQSLSMAEVWNPU-YTEMWHBBSA-N 1,2-bis[(e)-2-phenylethenyl]benzene Chemical compound C=1C=CC=CC=1/C=C/C1=CC=CC=C1\C=C\C1=CC=CC=C1 NGQSLSMAEVWNPU-YTEMWHBBSA-N 0.000 description 4
- ZOKIJILZFXPFTO-UHFFFAOYSA-N 4-methyl-n-[4-[1-[4-(4-methyl-n-(4-methylphenyl)anilino)phenyl]cyclohexyl]phenyl]-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(=CC=1)C1(CCCCC1)C=1C=CC(=CC=1)N(C=1C=CC(C)=CC=1)C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 ZOKIJILZFXPFTO-UHFFFAOYSA-N 0.000 description 4
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 4
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 4
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- 229920000553 poly(phenylenevinylene) Polymers 0.000 description 4
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- QYNTUCBQEHUHCS-UHFFFAOYSA-N 4-n-(3-methylphenyl)-1-n-[4-[4-(n-[4-(n-(3-methylphenyl)anilino)phenyl]anilino)phenyl]phenyl]-1-n,4-n-diphenylbenzene-1,4-diamine Chemical compound CC1=CC=CC(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=CC(=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)=C1 QYNTUCBQEHUHCS-UHFFFAOYSA-N 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- YNPNZTXNASCQKK-UHFFFAOYSA-N Phenanthrene Natural products C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
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- LPTWEDZIPSKWDG-UHFFFAOYSA-N benzenesulfonic acid;dodecane Chemical compound OS(=O)(=O)C1=CC=CC=C1.CCCCCCCCCCCC LPTWEDZIPSKWDG-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
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- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 125000000538 pentafluorophenyl group Chemical group FC1=C(F)C(F)=C(*)C(F)=C1F 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
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- 229910001848 post-transition metal Inorganic materials 0.000 description 1
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- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
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- 150000003624 transition metals Chemical class 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 유기 전계 발광 소자의 단면도이다.
도 3은 본 발명의 일 실시예에 따른 유기 전계 발광 소자의 단면도이다.
도 4는 본 발명의 일 실시예에 따른 유기 전계 발광 표시장치의 사시도이다.
도 5는 본 발명의 일 실시예에 따른 유기 전계 발광 표시장치에 포함되는 화소들 중 하나의 회로도이다.
도 6은 본 발명의 일 실시예에 따른 유기 전계 발광 표시장치에 포함되는 화소들 중 하나를 나타낸 평면도이다.
도 7은 도 6의 I-I’ 영역을 절단한 단면을 나타낸 단면도이다.
도 8은 본 발명의 일 실시예에 따른 유기 전계 발광 표시장치의 제조 방법의 개략적인 순서도이다.
발광 효율 (cd/A) | |
실시예 1 (적색 발광 소자) | 34.2 |
실시예 2 (녹색 발광 소자) | 57.5 |
실시예 3 (청색 발광 소자) | 104.0 |
실시예 4 (적색 발광 소자) | 34.2 |
실시예 5 (녹색 발광 소자) | 57.5 |
실시예 6 (청색 발광 소자) | 102.5 |
실시예 7 (적색 발광 소자) | 34.3 |
실시예 8 (녹색 발광 소자) | 58.0 |
실시예 9 (청색 발광 소자) | 104.0 |
실시예 10 (적색 발광 소자) | 33.8 |
실시예 11 (녹색 발광 소자) | 56.8 |
실시예 12 (청색 발광 소자) | 102.1 |
비교예 1 (적색 발광 소자) | 34.1 |
비교예 2(녹색 발광 소자) | 54.5 |
비교예 3(청색 발광 소자) | 102.0 |
구동 전압 (V) | 발광 효율(cd/A) | |
제1 백색 유기 전계 발광 표시장치 | 2.5 | 30.7 |
제2 백색 유기 전계 발광 표시장치 | 3.00 | 30.5 |
제3 백색 유기 전계 발광 표시장치 | 2.33 | 30.8 |
제4 백색 유기 전계 발광 표시장치 | 2.94 | 30.2 |
제5 백색 유기 전계 발광 표시장치 | 3.62 | 29.8 |
EL1: 제1 전극 HTR: 정공 수송 영역
EML: 발광층 ETR: 전자 수송 영역
ETL: 전자 수송층 EL2: 제2 전극
Claims (20)
- 제1 전극;
상기 제1 전극 상에 배치된 정공 수송 영역;
상기 정공 수송 영역 상에 배치된 발광층;
상기 발광층 상에 배치된 전자 수송 영역; 및
상기 전자 수송 영역 상에 배치된 제2 전극을 포함하고,
상기 전자 수송 영역은
상기 발광층 상에 직접 배치되는 전자 수송층을 포함하고,
상기 전자 수송층은 알칼리 금속, 알칼리 토금속, 및 란탄계 금속 중 적어도 하나 및 할로겐 원소를 포함하는 제1 삼원계 화합물을 포함하고,
상기 전자 수송 영역은 무기물로만 이루어진 것인 유기 전계 발광 소자. - 제1항에 있어서,
상기 제1 삼원계 화합물은 하기 화학식 1로 표시되는 것인 유기 전계 발광 소자:
[화학식 1]
XnYmZq
상기 화학식 1에서,
X 및 Y는 각각 독립적으로 알칼리 금속, 알칼리 토금속 또는 란탄계 금속이고,
Z는 할로겐 원소이며,
n, m, 및 q는 각각 독립적으로 1 이상 5 이하의 정수이다. - 제1항에 있어서,
상기 제1 삼원계 화합물은 KYbI3, RbYbI3, CsYbI3, NaYbI3, LiYbI3, RbSmI3, CsSmI3, KSmI3, NaSmI3, LiSmI3, RbMgI3, CsMgI3, KMgI3, NaMgI3 및 LiMgI3 중 적어도 하나를 포함하는 것인 유기 전계 발광 소자. - 제1항에 있어서,
상기 전자 수송층 상에 직접 배치되고, 상기 제2 전극과 접하는 전자 주입층을 더 포함하고,
상기 전자 주입층은 무기물로 이루어진 것인 유기 전계 발광 소자. - 제4항에 있어서,
상기 전자 주입층은 제2 삼원계 화합물을 포함하고,
상기 제1 삼원계 화합물 및 상기 제2 삼원계 화합물은 동일하거나 상이한 것인 유기 전계 발광 소자. - 제4항에 있어서,
상기 전자 주입층은 LiF, Liq(Lithium quinolate), Li2O, BaO, NaCl, CsF 및 란탄계 금속 중 적어도 하나를 포함하는 것인 유기 전계 발광 소자. - 제1 전극을 형성하는 단계;
상기 제1 전극 상에 정공 수송 영역을 형성하는 단계;
상기 정공 수송 영역 상에 발광층을 형성하는 단계;
상기 발광층 상에 전자 수송 영역을 형성하는 단계; 및
상기 전자 수송 영역 상에 제2 전극을 형성하는 단계를 포함하고,
상기 전자 수송 영역을 형성하는 단계는
상기 발광층 상에 직접 배치되는 전자 수송층을 형성하는 단계를 포함하고,
상기 전자 수송층을 형성하는 단계는
알칼리 금속, 알칼리 토금속 및 란탄계 금속 중 어느 하나의 할로겐화물인 제1 성분 및 알칼리 금속, 알칼리 토금속 및 란탄계 금속 중 어느 하나인 제2 성분을 공증착하여 수행되고,
상기 제1 성분과 상기 제2 성분의 부피비는 1:9 내지 9:1인 것인 유기 전계 발광 소자의 제조 방법. - 제7항에 있어서,
상기 제1 성분은 요오드화 칼륨(KI), 염화 칼륨(KCl), 염화 리튬(LiCl), 염화 나트륨(NaCl), 염화 루비듐(RbCl), 염화 세슘(CsCl), 브롬화 칼륨(KBr), 브롬화 루비듐(RbBr), 브롬화 세슘(CsBr), 요오드화 루비듐(RbI), 또는 요오드화 세슘(CsI)인 것인 유기 전계 발광 소자의 제조 방법. - 제7항에 있어서,
상기 제2 성분은 이터븀(Yb), 란탄(La), 세륨(Ce), 프라세오디뮴(Pr), 네오디뮴(Nd), 프로메튬(Pm), 사마륨(Sm), 유로퓸(Eu), 가돌리늄(Gd), 터븀(Tb), 디스프로슘(Dy), 홀뮴(Ho), 어븀(Er), 툴륨(Tm), 루테튬(Lu), 베릴륨(Be), 마그네슘(Mg), 칼슘(Ca), 스트론튬(Sr), 바륨(Ba) 또는 라듐(Ra)인 것인 유기 전계 발광 소자의 제조 방법. - 제7항에 있어서,
상기 전자 수송 영역을 형성하는 단계는
상기 전자 수송층 상에 직접 배치되는 전자 주입층을 형성하는 단계를 더 포함하고,
상기 제2 전극을 형성하는 단계는
상기 전자 주입층 상에 직접 배치되는 제2 전극을 형성하는 단계이며,
상기 전자 주입층을 형성하는 단계는
무기물을 증착하는 단계인 것인 유기 전계 발광 소자의 제조 방법. - 제10항에 있어서,
상기 전자 주입층을 형성하는 단계는
상기 제1 성분 및 상기 제2 성분을 공증착하여 수행되고,
상기 제1 성분과 상기 제2 성분의 부피비는 상기 전자 수송층을 형성하는 단계와 동일하거나 상이한 것인 유기 전계 발광 소자의 제조 방법. - 제10항에 있어서,
상기 전자 주입층을 형성하는 단계는
LiF, Liq(Lithium quinolate), Li2O, BaO, NaCl, CsF 및 란탄계 금속 중 적어도 하나를 증착하는 단계인 것인 유기 전계 발광 소자의 제조 방법. - 베이스 기판;
상기 베이스 기판 상에 배치되는 박막 트랜지스터; 및
상기 박막 트랜지스터와 연결되는 유기 전계 발광 소자를 포함하고,
상기 유기 전계 발광 소자는
제1 전극;
상기 제1 전극 상에 배치된 정공 수송 영역;
상기 정공 수송 영역 상에 배치된 발광층;
상기 발광층 상에 배치된 전자 수송 영역; 및
상기 전자 수송 영역 상에 배치된 제2 전극을 포함하고,
상기 전자 수송 영역은 상기 발광층 상에 직접 배치되는 전자 수송층을 포함하고,
상기 전자 수송층은 알칼리 금속, 알칼리 토금속, 및 란탄계 금속 중 적어도 하나 및 할로겐 원소를 포함하는 제1 삼원계 화합물을 포함하고,
상기 전자 수송 영역은 무기물로만 이루어진 것인 유기 전계 발광 표시장치. - 제13항에 있어서,
상기 제1 삼원계 화합물은 하기 화학식 1로 표시되는 것인 유기 전계 발광 표시장치:
[화학식 1]
XnYmZq
상기 화학식 1에서,
X 및 Y는 각각 독립적으로 알칼리 금속, 알칼리 토금속 또는 란탄계 금속이고,
Z는 할로겐 원소이며,
n, m, 및 q는 각각 독립적으로 1 이상 5 이하의 정수이다. - 제13항에 있어서,
상기 제1 삼원계 화합물은 KYbI3, RbYbI3, CsYbI3, NaYbI3, LiYbI3, RbSmI3, CsSmI3, KSmI3, NaSmI3, LiSmI3, RbMgI3, CsMgI3, KMgI3, NaMgI3 및 LiMgI3 중 적어도 하나를 포함하는 것인 유기 전계 발광 표시장치. - 제13항에 있어서,
상기 전자 수송층 상에 직접 배치되고, 상기 제2 전극과 접하는 전자 주입층을 더 포함하고,
상기 전자 주입층은 무기물로 이루어진 것인 유기 전계 발광 표시장치. - 제16항에 있어서,
상기 전자 주입층은 LiF, Liq(Lithium quinolate), Li2O, BaO, NaCl, CsF, 란탄계 금속 및 제2 삼원계 화합물 중 적어도 하나를 포함하고,
상기 제1 삼원계 화합물 및 상기 제2 삼원계 화합물은 동일하거나 상이한 것인 유기 전계 발광 표시장치. - 삭제
- 삭제
- 삭제
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