WO2005011332A1 - 発光素子の作製方法 - Google Patents
発光素子の作製方法 Download PDFInfo
- Publication number
- WO2005011332A1 WO2005011332A1 PCT/JP2004/010187 JP2004010187W WO2005011332A1 WO 2005011332 A1 WO2005011332 A1 WO 2005011332A1 JP 2004010187 W JP2004010187 W JP 2004010187W WO 2005011332 A1 WO2005011332 A1 WO 2005011332A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light
- layer
- emitting element
- manufacturing
- light emitting
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000002347 injection Methods 0.000 claims abstract description 66
- 239000007924 injection Substances 0.000 claims abstract description 66
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 37
- 239000001301 oxygen Substances 0.000 claims description 37
- 229910052760 oxygen Inorganic materials 0.000 claims description 37
- 230000015572 biosynthetic process Effects 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 25
- 239000007789 gas Substances 0.000 claims description 10
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 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 claims description 4
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 claims description 3
- KMQPLEYEXDZOJF-UHFFFAOYSA-N 1-naphthalen-2-ylanthracene Chemical compound C1=CC=C2C=C3C(C4=CC5=CC=CC=C5C=C4)=CC=CC3=CC2=C1 KMQPLEYEXDZOJF-UHFFFAOYSA-N 0.000 claims 1
- 230000036962 time dependent Effects 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 217
- 239000000758 substrate Substances 0.000 description 44
- 239000000463 material Substances 0.000 description 38
- 239000010408 film Substances 0.000 description 37
- 230000005525 hole transport Effects 0.000 description 28
- 239000000126 substance Substances 0.000 description 25
- 230000000903 blocking effect Effects 0.000 description 13
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 12
- 229910001634 calcium fluoride Inorganic materials 0.000 description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 10
- 238000005259 measurement Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000007789 sealing Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical group C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000012212 insulator Substances 0.000 description 6
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 6
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 6
- 229910052774 Proactinium Inorganic materials 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- -1 for example Substances 0.000 description 5
- 239000011777 magnesium Substances 0.000 description 5
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 4
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 150000002484 inorganic compounds Chemical class 0.000 description 4
- 229910010272 inorganic material Inorganic materials 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 239000000565 sealant Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 3
- 239000007983 Tris buffer Substances 0.000 description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 3
- 150000001342 alkaline earth metals Chemical class 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 3
- DHDHJYNTEFLIHY-UHFFFAOYSA-N 4,7-diphenyl-1,10-phenanthroline Chemical compound C1=CC=CC=C1C1=CC=NC2=C1C=CC1=C(C=3C=CC=CC=3)C=CN=C21 DHDHJYNTEFLIHY-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- UFVXQDWNSAGPHN-UHFFFAOYSA-K bis[(2-methylquinolin-8-yl)oxy]-(4-phenylphenoxy)alumane Chemical compound [Al+3].C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC([O-])=CC=C1C1=CC=CC=C1 UFVXQDWNSAGPHN-UHFFFAOYSA-K 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 150000004696 coordination complex Chemical class 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical compound C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 2
- 229920002620 polyvinyl fluoride Polymers 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- FKASFBLJDCHBNZ-UHFFFAOYSA-N 1,3,4-oxadiazole Chemical compound C1=NN=CO1 FKASFBLJDCHBNZ-UHFFFAOYSA-N 0.000 description 1
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- RMSGQZDGSZOJMU-UHFFFAOYSA-N 1-butyl-2-phenylbenzene Chemical group CCCCC1=CC=CC=C1C1=CC=CC=C1 RMSGQZDGSZOJMU-UHFFFAOYSA-N 0.000 description 1
- IYZMXHQDXZKNCY-UHFFFAOYSA-N 1-n,1-n-diphenyl-4-n,4-n-bis[4-(n-phenylanilino)phenyl]benzene-1,4-diamine Chemical compound C1=CC=CC=C1N(C=1C=CC(=CC=1)N(C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 IYZMXHQDXZKNCY-UHFFFAOYSA-N 0.000 description 1
- STTGYIUESPWXOW-UHFFFAOYSA-N 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline Chemical compound C=12C=CC3=C(C=4C=CC=CC=4)C=C(C)N=C3C2=NC(C)=CC=1C1=CC=CC=C1 STTGYIUESPWXOW-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- HONWGFNQCPRRFM-UHFFFAOYSA-N 2-n-(3-methylphenyl)-1-n,1-n,2-n-triphenylbenzene-1,2-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)=C1 HONWGFNQCPRRFM-UHFFFAOYSA-N 0.000 description 1
- FZYKBLSPMPIYKD-UHFFFAOYSA-N 5-(4-phenylphenyl)-1h-1,2,4-triazole Chemical compound C1=NNC(C=2C=CC(=CC=2)C=2C=CC=CC=2)=N1 FZYKBLSPMPIYKD-UHFFFAOYSA-N 0.000 description 1
- VIZUPBYFLORCRA-UHFFFAOYSA-N 9,10-dinaphthalen-2-ylanthracene Chemical compound C12=CC=CC=C2C(C2=CC3=CC=CC=C3C=C2)=C(C=CC=C2)C2=C1C1=CC=C(C=CC=C2)C2=C1 VIZUPBYFLORCRA-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- ZCQWOFVYLHDMMC-UHFFFAOYSA-N Oxazole Chemical compound C1=COC=N1 ZCQWOFVYLHDMMC-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 150000001341 alkaline earth metal compounds Chemical class 0.000 description 1
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- WZJYKHNJTSNBHV-UHFFFAOYSA-N benzo[h]quinoline Chemical group C1=CN=C2C3=CC=CC=C3C=CC2=C1 WZJYKHNJTSNBHV-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 1
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- GIFAOSNIDJTPNL-UHFFFAOYSA-N n-phenyl-n-(2-phenylphenyl)naphthalen-1-amine Chemical group C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=CC=C1C1=CC=CC=C1 GIFAOSNIDJTPNL-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 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
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/40—Thermal treatment, e.g. annealing in the presence of a solvent vapour
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/831—Aging
Definitions
- the present invention relates to a method for manufacturing a light-emitting element, and more particularly to a method for manufacturing a light-emitting element having a structure in which an organic compound is interposed between a pair of electrodes.
- a light emitting device using light emission from an electroluminescent element has attracted attention as a display or illumination device, and is being developed.
- the oxidation treatment described in Patent Document 1 requires a heat treatment at 250 to 450 degrees. Such a treatment is considered to be unsuitable for a light-emitting element using an organic compound having a low decomposition temperature and low heat resistance as a light-emitting layer as compared with an inorganic compound.
- Patent Document 1 Japanese Patent Application Laid-Open No. 7-45367
- An object of the present invention is to provide a method for manufacturing a light-emitting element having a structure in which an organic compound is sandwiched between a pair of electrodes, which can suppress a temporal decrease in luminous efficiency and extend the life.
- the present invention is a method for manufacturing a light-emitting element having a plurality of layers made of an organic compound between a pair of electrodes, wherein at least one of the plurality of layers is formed before or after formation. It is characterized by performing a process of exposing to an atmosphere containing an electron accepting gas.
- the plurality of layers include a light emitting layer, and the light emitting layer and one selected from a hole injection layer, a hole transport layer, a hole blocking layer, an electron transport layer, and an electron injection layer. Or a layer composed of two or more layers.
- hole injection layer ⁇ hole transport layer ⁇ light emitting layer ⁇ hole blocking layer ⁇ electron transport layer ⁇ electron injection layer hole injection layer ⁇ hole transport layer ⁇ light emitting layer ⁇ hole blocking layer ⁇ electron injection layer
- hole injection layer ⁇ hole transport layer ⁇ light emitting layer ⁇ hole blocking layer ⁇ electron It has a structure such as a transport layer, a hole injection layer, a hole transport layer, an emission layer, an electron transport layer, an electron injection layer, a hole injection layer, a hole transport layer, an emission layer, and an electron transport layer.
- any other configuration may be used.
- the light emitting layer, hole injection layer, hole transport layer, hole blocking layer, electron transport layer, and electron injection layer may be formed of the same substance or may contain the same substance. ,. Further, a substance containing an inorganic substance such as an organic metal complex may be used.
- the electron transport layer may be formed of one or more elements selected from alkali metals or alkaline earth metals. It may be formed of an inorganic compound such as an oxide, a nitride, or a fluoride.
- compounds such as tin (Sn), zinc (Zn), vanadium (V), ruthenium (Ru), samarium (Sm), and indium (In) may be used.
- Examples of the electron-accepting gas include oxygen. Exposure to an atmosphere containing an electron-accepting gas may be performed by a method in which a device being manufactured is exposed to a treatment chamber into which an electron-accepting gas has been introduced at room temperature (20 to 25 ° C.) for a certain period of time.
- the treatment of exposure to an atmosphere containing an electron-accepting gas is performed in any of the above-described layers (light-emitting layer, hole-injection layer, hole-transport layer, hole-blocking layer, electron-transport layer, and electron-injection layer).
- This may be performed before or after formation of an arbitrary layer. For example, it may be before or after the formation of the light emitting layer. Further, it may be before or after the formation of the hole injection layer. Alternatively, it may be performed at a plurality of process sites, such as before forming the hole injection layer and before forming the light emitting layer.
- a light emitting layer, a hole injection layer, a hole transport layer, a hole blocking layer, an electron transport layer, and an electron injection may each have a laminated structure. Therefore, when each of these layers has a laminated structure, a treatment of exposing to an atmosphere containing an electron-accepting gas may be performed before or after the formation of each layer to be laminated.
- the plurality of layers have a structure such as a hole injection layer ⁇ hole transport layer ⁇ light emitting layer ⁇ hole blocking layer ⁇ electron transport layer ⁇ electron injection layer, for example, They may be formed in order, or may be formed in order from the electron injection layer. Similarly, in the case of having other layer configurations, the order of lamination is not particularly limited.
- a light-emitting element By manufacturing a light-emitting element by applying the present invention, when current is applied to the light-emitting element at a constant current density and light emission is continued, a decrease in emission luminance over time is reduced, and the length of the light-emitting element is reduced. Life can be extended. In addition, when a current is applied to the light emitting element at a constant current density and light emission is continued, an increase in driving voltage of the light emitting element is suppressed, and power consumption of the light emitting element can be reduced. Further, in a light-emitting device using a light-emitting element manufactured by applying the present invention, long life or low power consumption can be achieved.
- FIG. 1 shows the results of measuring the change over time in the light emission luminance of a light emitting element manufactured by applying the present invention.
- FIG. 2 is a diagram illustrating one embodiment of a light-emitting element manufactured by applying the present invention.
- FIG. 3 is a diagram illustrating one embodiment of a light emitting device using a light emitting element manufactured by applying the present invention.
- FIG. 4 shows the results of measuring the change over time in the light emission luminance of a light emitting element manufactured by applying the present invention.
- FIG. 5 shows the results of measuring the change over time in the emission luminance of a light-emitting element manufactured by applying the present invention.
- FIG. 6 is a diagram illustrating one embodiment of a light emitting device using a light emitting element manufactured by applying the present invention.
- FIG. 7 illustrates an electronic device equipped with a light emitting device manufactured by applying the present invention.
- 412-TFT for current control 413-First electrode, 414-Insulator, 416-Layer containing light-emitting substance, 417-Second electrode, 418-Light-emitting element, 423-n-channel TFT,
- a first electrode (anode) 202 is formed on a substrate 201.
- the substrate 201 glass, plastic, or the like can be used. Note that any other material may be used as long as it functions as a support for forming a light-emitting element.
- a metal, a metal, an electrically conductive compound, a mixture thereof, or the like having a high work function (work function: 4. OeV or more) is preferably used as a high work function (work function: 4. OeV or more) is preferably used.
- ITO indium tin oxide
- 2-20 % IZO Indium Zinc Oxide mixed with zinc oxide (ZnO)
- gold Au
- platinum Pt
- nickel Ni
- tungsten W
- chromium Cr
- molybdenum Mo
- iron Fe
- cobalt Co
- copper Cu
- palladium Pd
- TiN metal nitride
- the substrate 201 on which the first electrode (anode) 202 is formed is subjected to a heat treatment in a vacuum.
- the substrate 201 formed up to the first electrode 202 is left in a processing chamber containing an electron-accepting gas at room temperature (2025 ° C.) for a certain period of time.
- an electron-accepting gas for example, oxygen can be used.
- a hole injection layer 203 is formed over the first electrode 202.
- a phthalocyanine-based compound can be used as a substance for forming the hole-injection layer 203.
- a phthalocyanine-based compound can be used.
- HPc phthalocyanine
- CuPc copper phthalocyanine
- a polymer material in which polystyrene sulfonic acid (PSS) and polyethylene dioxythiophene (PEDOT) are mixed can also be used.
- the hole injection layer 203 may be a layer in which layers made of the above substances are stacked.
- a hole transport layer 204 is formed on the hole injection layer 203.
- an aromatic amine-based compound that is, a compound having a benzene ring-nitrogen bond
- an aromatic amine-based compound that is, a compound having a benzene ring-nitrogen bond
- Widely used materials include, for example, 4,4'-bis_ (3-methylphenyl) _N_phenylamino] -biphenyl (abbreviation: TPD) and its derivative 4,4,1-bis [ N- (l-naphthyl) -N-phenylamino] -biphenyl (abbreviation: a—NPD) or 4,4 ', 4,4, tris ( ⁇ , ⁇ -diphenylamino) -triphenylamine (abbreviation: TDATA ), 4,4,4 '' '-tris [N- (3-methylphenyl) -N-phenylamino] -triphenylamine (abbreviation: MTDATA) and other starburst-type aromatic amine compounds Is mentioned.
- the hole transport layer 204 may be a layer in which layers made of the above substances are stacked.
- the light emitting layer 205 is formed on the hole transport layer 204.
- a light emitting material having a high light emitting ability and a carrier transporting property such as 9,10-di (2-naphthyl) anthracene (abbreviation: DNA) can be used.
- the light-emitting material N, N, _dimethylquinatalidone (abbreviation: DMQd) is used as a guest material and has good film-forming properties like Alq (crystallization). It is also possible to use a material co-evaporated with a host material having a high carrier-transport property.
- the substance forming the electron transport layer 206 includes tris (8-quinolinolato) aluminum (abbreviation: Alq), tris (5-methyl-8_quinolinolato) aluminum (abbreviation: Almq), and bis (10-hydroxybenzo [h] -quinolinato
- Alq (8-quinolinolato) aluminum
- Almq tris (5-methyl-8_quinolinolato) aluminum
- BAlq bis (10-hydroxybenzo [h] -quinolinato
- BeBq beryllium
- BAlq bis (2-methyl-8-quinolinolato) —4-phenylphenolato-alminium
- a second electrode (cathode) 207 is formed on the electron transport layer 206.
- a material forming the second electrode 207 a metal, an alloy, an electrically conductive compound, a mixture thereof, or the like having a low work function (a work function of 3.8 eV or less) can be used.
- Specific examples of such a cathode material include elements belonging to Group 1 or 2 of the periodic table, that is, alkali metals such as lithium (Li) and cesium (Cs), and magnesium (Mg), calcium (Ca), Examples include alkaline earth metals such as strontium (Sr) and alloys containing these (Mg: Ag, Al: Li).
- the second electrode 207 by providing a layer having a function of promoting electron injection between the second electrode 207 and the light-emitting layer by lamination with the second electrode, regardless of the work function, Various conductive materials such as Al, Ag, and ITO can be used as the second electrode 207.
- the layer having a function of promoting electron injection includes lithium fluoride (LiF), Alkali metal or alkaline earth metal compounds such as aluminum (CsF) and calcium fluoride (CaF) can be used.
- a material in which an alkali metal or an alkaline earth metal is contained in a material having an electron transporting property for example, a material in which magnesium (Mg) is contained in Alq can be used.
- the hole injection layer 203, the hole transport layer 204, the light-emitting layer 205, and the electron transport layer 206 may be formed by any of a vapor deposition method, an inkjet method, and a spin coating method. .
- a material other than the above substances may be used.
- the structure of the light-emitting element is not limited to the above.
- a light-emitting element having a stacked structure different from that described above between the first electrode 202 and the second electrode 207 may be used.
- a structure having a hole blocking layer or the like between the light emitting layer and the electron transport layer may be used.
- layers such as an electron injection layer, an electron transport layer, a hole blocking layer, a hole transport layer, and a hole injection layer are provided in any combination, and the first electrode 202 and the second electrode 207 are provided.
- BAlq As a substance for forming the hole blocking layer, BAlq, OXD_7, TAZ, p-Et TAZ, BPhen, BCP, or the like can be used.
- the process of exposing to an atmosphere containing oxygen may be performed at any process stage after forming the first electrode 202 and before forming the second electrode.
- it may be before the formation of the hole injection layer as described above or after the formation of the hole injection layer.
- it may be before or after the formation of the hole transport layer.
- the light-emitting layer may be formed before or after formation.
- it may be before or after the hole blocking layer is formed.
- it may be before or after the formation of the electron transport layer.
- it may be before or after the formation of the electron injection layer.
- the light emitting layer, the hole injection layer, the hole transport layer, the hole blocking layer, the electron transport layer, and the electron injection layer each have a layered structure
- treatment for exposure to an atmosphere containing oxygen may be performed.
- hole injection layer If the has a two-layer structure, after forming the first layer, it may be subjected to a treatment of exposing to an atmosphere containing oxygen, and then forming a second layer. The treatment of exposure to an atmosphere containing oxygen may be performed a plurality of times in different process steps.
- a light-emitting element is manufactured over a substrate 201 made of glass, plastic, or the like.
- a passive light-emitting device can be manufactured.
- a light emitting element may be manufactured on a thin film transistor (TFT) array substrate, for example, as shown in FIG.
- TFTs 11 and 12 are provided on a substrate 10.
- a light-emitting element 13 having a layer 15 containing a light-emitting substance is provided between the first electrode 14 and the second electrode 16 on the layer on which the TFTs 11 and 12 are provided.
- the TFT 11 is connected to the TFT 11 via a wiring 17.
- the structure of the TFT is not particularly limited.
- Example 1 In this example, a method for manufacturing the light-emitting element illustrated in FIG. 2 will be described.
- Example 1 In this example, a light-emitting device manufactured by performing exposure treatment to an atmosphere containing oxygen before forming a hole-injection layer will be described.
- a first electrode 202 was formed on a substrate 201 by depositing ITO by a sputtering method.
- IT_ ⁇ was heat-treated substrate 201 that has been deposited.
- the substrate 201 formed up to the first electrode 202 was exposed to an atmosphere containing oxygen. Specifically, the degree of vacuum in the processing chamber maintained at 1 X 10- 5 Pa flowing oxygen of 25 sccm, exposed 1. 0 Pa, at room temperature (20- 25 °) to the processing chamber maintained at 5 min. The processing is Since the reaction is performed at room temperature, there is no possibility that the organic compound is decomposed by heat.
- a hole injection layer 203 is formed by depositing CuPC to a thickness of 20 nm on the first electrode 202, and a 40 nm film of ⁇ -NPD is formed on the hole injection layer 203.
- the hole transport layer 204 was formed by forming a film having a large thickness.
- a 30-nm-thick film of DNA was formed on the hole-transporting layer 204 to form a light-emitting layer 205.
- calcium fluoride (CaF) and aluminum (A1) are respectively formed on the electron transport layer 206.
- a second electrode 207 consisting of a two-layer film was formed.
- CaF has a function to promote electron injection.
- the first electrode 202 functions as an anode and the second electrode 207 functions as a cathode.
- a voltage is applied between the first electrode 202 and the second electrode 207 to cause a current to flow, holes and electrons are recombined in the light emitting layer 205 to emit light.
- FIG. 1A shows a measurement result obtained by measuring a change over time in light emission luminance of the light-emitting element manufactured in this example.
- the horizontal axis represents elapsed time (hour)
- the vertical axis represents light emission brightness.
- the light emission luminance is represented by a relative value to the initial luminance when the initial luminance is set to 100.
- FIG. 1 also shows a measurement result of a change over time in light emission luminance of a light-emitting element manufactured without performing exposure to an atmosphere containing oxygen after the formation of the first electrode 202. Example 1).
- the measurement of the change over time in the light emission luminance was performed by a method in which a current having a constant current density was continuously supplied to the light emitting element and the luminance of the light emitting element was measured at an arbitrary time.
- a current having a constant current density was continuously supplied to the light emitting element and the luminance of the light emitting element was measured at an arbitrary time.
- the current density a value when the initial luminance was 200 cd was used.
- FIG. 1B shows a temporal change in a voltage applied to supply a current having a constant current density to the light-emitting element in the above measurement.
- the horizontal axis represents the elapsed time (hour) and the vertical axis represents the voltage value.
- FIG. 1 (B) also shows the measurement results of the time-dependent change of the voltage applied to the light-emitting element manufactured as described in this example without performing the subsequent treatment to expose to an atmosphere containing oxygen. Is shown.
- a decrease in luminance over time when a current is applied to the light-emitting element at a constant current density and light is continuously emitted is obtained.
- the life of the light-emitting element can be prolonged.
- an increase in driving voltage of the light-emitting element is suppressed, and power consumption of the light-emitting element can be reduced.
- Example 2 a light emitting element shown in FIG. 2 as shown in Example 1 and in which the material forming the hole injection layer is different from that used in Example 1 will be described.
- the film was exposed to an atmosphere containing oxygen to produce a light-emitting element.
- the hole injection layer 203 a mixture of PEDOT and PSS formed by spin coating was used as the hole injection layer 203.
- the first electrode 202, the hole transport layer 204, the light emitting layer 205, the electron transport layer 206, and the second electrode 207 are similar in material, film thickness, and formation method to those shown in Example 1. is there.
- a film of ITO was formed on a substrate 201 by a sputtering method, so that a first electrode 202 was formed.
- IT_ ⁇ was heat-treated substrate 201 that has been deposited.
- the substrate 201 formed up to the first electrode 202 was exposed to an atmosphere containing oxygen. Specifically, the degree of vacuum in the processing chamber maintained at 1 X 10- 5 Pa flowing oxygen of 25 sccm, exposed 1. 0 Pa, at room temperature (20- 25 °) to the processing chamber maintained at 5 min.
- a hole injection layer 203 is formed by forming a mixed material of PEDOT and PSS on the first electrode 202, and ⁇ -NPD is formed on the hole injection layer 203 by 40 nm.
- the hole transport layer 204 was formed by forming a film having the following thickness. In this example, two types of light-emitting elements having different thicknesses of films made of a mixed material of PEDOT and PSS were manufactured. The thickness of the film composed of the mixed substance of PEDOT and PSS is 30 nm (Example 2-1) and 90 nm (Example 2-2), respectively.
- DNA was formed in a thickness of 30 nm on the hole transport layer 204 to form a light emitting layer 205.
- a 30 nm-thick Alq film is formed on the light emitting layer 205 to form the electron transport layer 206.
- a second electrode 207 consisting of a two-layer film was formed with a thickness of 200 nm and a thickness of 200 nm. Note that CaF has a function to promote electron injection.
- the first electrode 202 functions as an anode and the second electrode 207 functions as a cathode.
- a voltage is applied between the first electrode 202 and the second electrode 207 to cause a current to flow, holes and electrons are recombined in the light emitting layer 205 to emit light.
- FIG. 4 shows a measurement result obtained by measuring a change over time in light emission luminance of the light emitting element manufactured in this example.
- the horizontal axis represents elapsed time (hour), and the vertical axis represents light emission luminance.
- the light emission luminance is represented by a relative value to the initial luminance when the initial luminance is set to 100.
- FIG. 4 also shows a measurement result of a change over time in light emission luminance of a light-emitting element manufactured without performing a treatment of exposing to an atmosphere containing oxygen after the formation of the first electrode 202.
- the comparative example corresponding to Example 2-1 is Comparative Example 2-1
- the comparative example corresponding to Example 2-2 is Comparative Example 2-2.
- the measuring method is as described in Example 1.
- the light emitting layer 205 is formed by co-evaporating Alq with DMQd as a guest material.
- the electron transport layer 206 was formed by depositing Alq by an evaporation method in the same manner as in Example 1.
- the film thickness was 37.5 nm.
- the first electrode 202, the hole injection layer 203, the hole transport layer 204, and the second electrode 207 are the same in material, film thickness, and formation method as those described in Embodiment 1.
- three light-emitting elements having the same material, film thickness, and formation method, and having different process portions for performing the process of exposing to an atmosphere containing oxygen were manufactured.
- the three light emitting elements are formed on a first substrate 201a, a second substrate 201b, and a third substrate 201c, respectively.
- the first to third substrates were made of the same material. The following steps are performed on any substrate unless otherwise specified.
- an ITO film was formed on the first and third substrates 201 (201a, 201b, 201c) by a sputtering method, and the first electrodes 202 were formed on the respective substrates.
- IT_ ⁇ is the formed substrate 20 l (201a, 201b, 201c ) and heat treated.
- the first substrate 201a formed up to the first electrode 202 was exposed to an atmosphere containing oxygen (Example 3-1). Specifically, the degree of vacuum in the processing chamber maintained at 1 X 10- 5 Pa flowing oxygen for 2 5 sccm, exposed 1. 0 Pa, at room temperature (20- 25 °) to the processing chamber maintained at 5 minutes
- a hole injection layer 203 was formed on the first electrode 202 by depositing CuPC to a thickness of 20 nm.
- the second substrate 201b formed up to the hole injection layer 203 was exposed to an atmosphere containing oxygen (Example 3-2). Specifically, the vacuum degree flowing oxygen treatment 25sccm the chamber was maintained at 1 X 10- 5 Pa, and exposed 1. 0 Pa, at room temperature (20 25 °) to keep the processing chamber for 5 minutes.
- a hole transport layer 204 was formed on the hole injection layer 203 by forming a thin NPD with a thickness of 40 nm.
- DMQd and Alq are co-deposited on the hole transport layer 204 to form a film having a thickness of 37.5 nm.
- the light-emitting layer 205 was formed. DMQd is used as a guest material that emits green light. Next, a 37.5 nm-thick Alq film is formed on the light emitting layer 205 to form the electron transport layer 206.
- the third substrate 201c formed up to the electron transport layer 206 was exposed to an atmosphere containing oxygen (Example 2-2). Specifically, the vacuum degree flowing oxygen treatment 25sccm the chamber was maintained at 1 X 10- 5 Pa, and exposed 1. 0 Pa, at room temperature (20 25 °) to keep the processing chamber for 5 minutes.
- Calcium fluoride CaF and aluminum A1 were deposited on the electron transport layer 206 at lnm and 2 respectively.
- the second electrode 207 was formed to have a thickness of OO nm, and was formed of a two-layer film.
- the first electrode 202 functions as an anode and the second electrode 207 functions as a cathode.
- a voltage is applied between the first electrode 202 and the second electrode 207 to cause a current to flow, holes and electrons are recombined in the light emitting layer 205 to emit light.
- FIG. 5 shows a measurement result obtained by measuring a change over time in light emission luminance of the light emitting element manufactured in this example.
- the horizontal axis represents elapsed time (hour), and the vertical axis represents light emission luminance.
- the light emission luminance is represented by a relative value to the initial luminance when the initial luminance is set to 100.
- FIG. 5 also shows a measurement result of a change over time in light emission luminance of a light-emitting element manufactured without performing exposure to an atmosphere containing oxygen after the formation of the first electrode 202 (comparison).
- Example 3 The measuring method is as described in Example 1.
- FIG. 6A is a top view illustrating the light-emitting device
- FIG. 6B is a cross-sectional view of FIG. 6A cut along AA ′.
- Reference numeral 401 indicated by a dotted line denotes a driving circuit unit (source-side driving circuit)
- 402 denotes a pixel unit
- 403 denotes a driving circuit unit (gate-side driving circuit).
- Reference numeral 404 denotes a sealing substrate
- 405 denotes a sealant
- the inside surrounded by the sealant 405 is a space 407.
- Reference numeral 408 denotes wiring for transmitting signals input to the source-side drive circuit 401 and the gate-side drive circuit 403, and a video signal from an FPC (flexible printed circuit) 409 serving as an external input terminal. It receives a clock signal, a start signal, a reset signal, and the like. Although only the FPC is shown here, a printed wiring board (PWB) may be attached to this FPC.
- the light emitting device in this embodiment includes a state in which an FPC or a PWB is attached to the light emitting device main body, instead of only the light emitting device main body.
- a driver circuit portion and a pixel portion are formed over a substrate 410.
- a source side driver circuit 401 which is a driver circuit portion and a pixel portion 402 are shown.
- the source side drive circuit 401 is formed as a CMOS circuit combining the n-channel TFT 423 and the p-channel TFT 424.
- the TFT forming the driving circuit may be formed by a known CMOS circuit, PMOS circuit or NMOS circuit. Further, in this embodiment mode, a driver integrated with a driver circuit formed over a substrate is shown; however, the driver circuit may be formed outside the substrate, not necessarily.
- the pixel portion 402 is formed of a plurality of pixels including a switching TFT 411, a current control TFT 412, and a first electrode 413 electrically connected to the drain.
- an insulator 414 is formed to cover an end of the first electrode 413.
- it is formed by using a positive photosensitive acrylic resin film.
- a curved surface having a curvature is formed at the upper end or the lower end of the insulator 414.
- a positive photosensitive acrylic is used as the material of the insulator 414
- a negative type which becomes insoluble in an etchant by photosensitive light or a positive type which becomes insoluble in an etchant by light can be used.
- a layer 416 containing a light-emitting substance and a second electrode 417 are formed over the first electrode 413, respectively.
- a material used for the first electrode 413 functioning as an anode it is preferable to use a material having a large work function.
- ITO indium tin oxide
- IZO indium zinc oxide
- titanium nitride film titanium nitride film
- chromium film tungsten film
- Z a single-layer film such as an n film and a Pt film
- a laminated structure of titanium nitride and a film containing aluminum as a main component, a three-layer structure of a titanium nitride film, a film containing aluminum as a main component, and a titanium nitride film, and the like are used. That can be S. Note that with a stacked structure, a good ohmic contact having low resistance as a wiring can be obtained, and further, it can function as an anode.
- the layer 416 containing a light-emitting substance is formed by an evaporation method using an evaporation mask or an inkjet method.
- a material that can be used for the layer 416 containing a light-emitting substance a low-molecular material or a high-molecular material may be used.
- an organic compound is usually often used as a single layer or a stacked layer.
- an inorganic compound is used for part of a film formed of an organic compound. The configuration shall be included. Note that when the layer 416 containing a light-emitting substance is formed, a treatment for exposing to an atmosphere containing oxygen is performed before or after formation of an organic compound layer included in the layer 416 containing the light-emitting substance.
- a layer containing a light-emitting substance may be formed separately for each of light-emitting colors using a mask, a partition layer, or the like. Les ,. In this case, a different layered structure may be provided for each layer containing a light-emitting substance that emits each color.
- a material used for the second electrode (cathode) 417 formed on the layer 416 containing a light-emitting substance a material having a small work function (Al, Ag, Li, Ca, or an alloy thereof MgAg , Mgln, A1—Li, CaF, or CaN).
- a thin metal film and a transparent conductive film ITO ( It is preferable to use a laminate of indium tin oxide), indium zinc oxide alloy (In O—ZnO), zinc oxide (Zn ⁇ ), or the like.
- the sealing substrate 404 by attaching the sealing substrate 404 to the element substrate 410 with the sealing agent 405, the light emitting element 418 is provided in the space 407 surrounded by the element substrate 410, the sealing substrate 404, and the sealing agent 405. It has a structure. Note that the space 407 is filled with an inert gas (nitrogen, argon, or the like), and also includes a structure filled with a sealant 405.
- an inert gas nitrogen, argon, or the like
- an epoxy resin for the seal 05.
- these materials are materials that do not transmit moisture and oxygen as much as possible.
- the sealing substrate As a material used for the 404, a plastic substrate made of FRP (Fiberglass-Reinforced Plastics), PVF (polyvinyl fluoride), mylar, polyester, acrylic, or the like can be used in addition to a glass substrate or a quartz substrate.
- FIG. 7A shows a display device, which includes a housing 5501, a support base 5502, and a display portion 5503.
- the display device can be completed by incorporating the light-emitting device described in Embodiment 4 into the display device.
- FIG. 7B shows a video camera, which includes a main body 5511, a display portion 5512, an audio input 5513, an operation switch 5514, a battery 5515, an image receiving portion 5516, and the like.
- the display device can be completed by incorporating the light emitting device described in Embodiment 4 into a video camera.
- FIG. 7C shows a notebook personal computer manufactured by applying the present invention, which is composed of a main body 5521, a window 5522, a display sound 5523, a keyboard 5524, and the like.
- a display device can be completed by incorporating the light-emitting device described in Embodiment 4 into a personal computer.
- FIG. 7D illustrates a personal digital assistant (PDA) manufactured by applying the present invention.
- a main body 5531 is provided with a display portion 5533, an external interface 5535, operation buttons 5534, and the like.
- a display device can be completed by incorporating the light emitting device described in Embodiment 4 into a personal digital assistant (PDA).
- Fig. 7 (E) shows a digital camera, which includes the main unit 5551, display unit (A) 5552, joint dome unit 5553, operation switch 5554, display unit (B) 5555, and nottery 5556. Being done.
- the display device can be completed by incorporating the light emitting device described in Embodiment 4 into a digital video camera.
- FIG. 7F shows a mobile phone manufactured by applying the present invention.
- Main unit 5561 has display 55 64, an audio output unit 5562, an operation switch 5565, an antenna 5566, and the like.
- a display device can be completed by incorporating the light emitting device shown in Embodiment 4 into a mobile phone.
Abstract
Description
Claims
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WO2008075615A1 (en) * | 2006-12-21 | 2008-06-26 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting element and light-emitting device |
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CN114038947A (zh) * | 2020-11-03 | 2022-02-11 | 广东聚华印刷显示技术有限公司 | 发光器件功能层的处理方法及发光器件 |
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JP2007234293A (ja) * | 2006-02-28 | 2007-09-13 | Seiko Epson Corp | 有機半導体素子の製造方法、有機el装置の製造方法および有機el装置の製造装置 |
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JP4730132B2 (ja) * | 2006-02-28 | 2011-07-20 | セイコーエプソン株式会社 | 有機el装置の製造方法 |
JP4730133B2 (ja) * | 2006-02-28 | 2011-07-20 | セイコーエプソン株式会社 | 有機el装置および電子機器 |
JP2013543250A (ja) * | 2010-11-22 | 2013-11-28 | 出光興産株式会社 | 有機エレクトロルミネッセンス素子 |
US8883323B2 (en) | 2010-11-22 | 2014-11-11 | Idemitsu Kosan Co., Ltd. | Organic electroluminescence device |
Also Published As
Publication number | Publication date |
---|---|
JP4799176B2 (ja) | 2011-10-26 |
US7247983B2 (en) | 2007-07-24 |
JPWO2005011332A1 (ja) | 2006-09-14 |
US20050212411A1 (en) | 2005-09-29 |
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