JP2000068064A - Luminescent element - Google Patents
Luminescent elementInfo
- Publication number
- JP2000068064A JP2000068064A JP10240332A JP24033298A JP2000068064A JP 2000068064 A JP2000068064 A JP 2000068064A JP 10240332 A JP10240332 A JP 10240332A JP 24033298 A JP24033298 A JP 24033298A JP 2000068064 A JP2000068064 A JP 2000068064A
- Authority
- JP
- Japan
- Prior art keywords
- hole transport
- materials
- light emitting
- light
- superior
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 84
- 230000005525 hole transport Effects 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims description 12
- 239000011159 matrix material Substances 0.000 claims description 8
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical class 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 claims description 4
- 238000010549 co-Evaporation Methods 0.000 claims description 3
- 125000005259 triarylamine group Chemical group 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 15
- 238000002156 mixing Methods 0.000 abstract description 7
- 238000002347 injection Methods 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 238000003475 lamination Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 18
- 239000011521 glass Substances 0.000 description 13
- 239000000758 substrate Substances 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- -1 diamine compound Chemical class 0.000 description 7
- 239000010408 film Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 239000002019 doping agent Substances 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 4
- 238000005566 electron beam evaporation Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 150000004866 oxadiazoles Chemical class 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 150000001893 coumarin derivatives Chemical class 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- DGBWPZSGHAXYGK-UHFFFAOYSA-N perinone Chemical class C12=NC3=CC=CC=C3N2C(=O)C2=CC=C3C4=C2C1=CC=C4C(=O)N1C2=CC=CC=C2N=C13 DGBWPZSGHAXYGK-UHFFFAOYSA-N 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 229920000123 polythiophene Polymers 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000005361 soda-lime glass Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 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 3
- 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 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 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 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229920000767 polyaniline Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- MDYOLVRUBBJPFM-UHFFFAOYSA-N tropolone Chemical compound OC1=CC=CC=CC1=O MDYOLVRUBBJPFM-UHFFFAOYSA-N 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- VNDYJBBGRKZCSX-UHFFFAOYSA-L zinc bromide Chemical compound Br[Zn]Br VNDYJBBGRKZCSX-UHFFFAOYSA-L 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- NGQSLSMAEVWNPU-YTEMWHBBSA-N 1,2-bis[(e)-2-phenylethenyl]benzene Chemical class C=1C=CC=CC=1/C=C/C1=CC=CC=C1\C=C\C1=CC=CC=C1 NGQSLSMAEVWNPU-YTEMWHBBSA-N 0.000 description 1
- KLCLIOISYBHYDZ-UHFFFAOYSA-N 1,4,4-triphenylbuta-1,3-dienylbenzene Chemical class C=1C=CC=CC=1C(C=1C=CC=CC=1)=CC=C(C=1C=CC=CC=1)C1=CC=CC=C1 KLCLIOISYBHYDZ-UHFFFAOYSA-N 0.000 description 1
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 1
- QATXODAWDLTPRH-UHFFFAOYSA-N 9-(3-methylphenyl)carbazole Chemical compound CC1=CC=CC(N2C3=CC=CC=C3C3=CC=CC=C32)=C1 QATXODAWDLTPRH-UHFFFAOYSA-N 0.000 description 1
- PLAZXGNBGZYJSA-UHFFFAOYSA-N 9-ethylcarbazole Chemical compound C1=CC=C2N(CC)C3=CC=CC=C3C2=C1 PLAZXGNBGZYJSA-UHFFFAOYSA-N 0.000 description 1
- QSOAYCUFEQGHDN-UHFFFAOYSA-N 9-naphthalen-1-ylcarbazole Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=CC2=CC=CC=C12 QSOAYCUFEQGHDN-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 1
- 102100033007 Carbonic anhydrase 14 Human genes 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 101000867862 Homo sapiens Carbonic anhydrase 14 Proteins 0.000 description 1
- 239000013032 Hydrocarbon resin Substances 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- MPCRDALPQLDDFX-UHFFFAOYSA-L Magnesium perchlorate Chemical compound [Mg+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O MPCRDALPQLDDFX-UHFFFAOYSA-L 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical class N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- PJANXHGTPQOBST-VAWYXSNFSA-N Stilbene Natural products C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 1
- 230000004888 barrier function Effects 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
- 239000005388 borosilicate glass Substances 0.000 description 1
- 229910001622 calcium bromide Inorganic materials 0.000 description 1
- WGEFECGEFUFIQW-UHFFFAOYSA-L calcium dibromide Chemical compound [Ca+2].[Br-].[Br-] WGEFECGEFUFIQW-UHFFFAOYSA-L 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004883 computer application Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 1
- GBRBMTNGQBKBQE-UHFFFAOYSA-L copper;diiodide Chemical compound I[Cu]I GBRBMTNGQBKBQE-UHFFFAOYSA-L 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical class C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 150000007946 flavonol Chemical class 0.000 description 1
- HVQAJTFOCKOKIN-UHFFFAOYSA-N flavonol Natural products O1C2=CC=CC=C2C(=O)C(O)=C1C1=CC=CC=C1 HVQAJTFOCKOKIN-UHFFFAOYSA-N 0.000 description 1
- 235000011957 flavonols Nutrition 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 150000007857 hydrazones Chemical class 0.000 description 1
- 229920006270 hydrocarbon resin Polymers 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011133 lead Substances 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
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910001512 metal fluoride Inorganic materials 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- NJVSFOMTEFOHMI-UHFFFAOYSA-N n,2-diphenylaniline Chemical group C=1C=CC=C(C=2C=CC=CC=2)C=1NC1=CC=CC=C1 NJVSFOMTEFOHMI-UHFFFAOYSA-N 0.000 description 1
- 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 1
- BLFVVZKSHYCRDR-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-2-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-2-amine Chemical group C1=CC=CC=C1N(C=1C=C2C=CC=CC2=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C3C=CC=CC3=CC=2)C=C1 BLFVVZKSHYCRDR-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical compound C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 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
- 239000003208 petroleum Substances 0.000 description 1
- 150000005041 phenanthrolines Chemical class 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- FIZIRKROSLGMPL-UHFFFAOYSA-N phenoxazin-1-one Chemical compound C1=CC=C2N=C3C(=O)C=CC=C3OC2=C1 FIZIRKROSLGMPL-UHFFFAOYSA-N 0.000 description 1
- UOMHBFAJZRZNQD-UHFFFAOYSA-N phenoxazone Natural products C1=CC=C2OC3=CC(=O)C=CC3=NC2=C1 UOMHBFAJZRZNQD-UHFFFAOYSA-N 0.000 description 1
- 229920006287 phenoxy resin Polymers 0.000 description 1
- 239000013034 phenoxy resin Substances 0.000 description 1
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 1
- 229920001490 poly(butyl methacrylate) polymer Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000553 poly(phenylenevinylene) Polymers 0.000 description 1
- 229920000548 poly(silane) polymer Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 150000003216 pyrazines Chemical class 0.000 description 1
- 150000003219 pyrazolines Chemical class 0.000 description 1
- 150000005255 pyrrolopyridines Chemical class 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 150000004322 quinolinols Chemical class 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 235000021286 stilbenes Nutrition 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
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Inorganic materials O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- QKTRRACPJVYJNU-UHFFFAOYSA-N thiadiazolo[5,4-b]pyridine Chemical class C1=CN=C2SN=NC2=C1 QKTRRACPJVYJNU-UHFFFAOYSA-N 0.000 description 1
- NZFNXWQNBYZDAQ-UHFFFAOYSA-N thioridazine hydrochloride Chemical class Cl.C12=CC(SC)=CC=C2SC2=CC=CC=C2N1CCC1CCCCN1C NZFNXWQNBYZDAQ-UHFFFAOYSA-N 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229940102001 zinc bromide Drugs 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、電気エネルギーを
光に変換できる素子であって、表示素子、フラットパネ
ルディスプレイ、バックライト、照明、インテリア、標
識、看板、電子写真機、光信号発生器などの分野に利用
可能な発光素子に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an element capable of converting electric energy into light, and relates to a display element, a flat panel display, a backlight, lighting, an interior, a sign, a sign, an electrophotographic device, an optical signal generator, and the like. The present invention relates to a light emitting element that can be used in the field of (1).
【0002】[0002]
【従来の技術】負極から注入された電子と正極から注入
された正孔が両極に挟まれた有機蛍光体内で再結合する
際に発光する有機積層薄膜発光素子の研究が近年活発に
行われている。この素子は、薄型、低駆動電圧下での高
輝度発光、蛍光材料を選ぶことによる多色発光が特徴で
ある。2. Description of the Related Art In recent years, active research has been conducted on organic thin-film light emitting devices that emit light when electrons injected from a negative electrode and holes injected from a positive electrode recombine in an organic phosphor sandwiched between both electrodes. I have. This element is characterized by thinness, high luminance light emission under a low driving voltage, and multicolor light emission by selecting a fluorescent material.
【0003】有機積層薄膜素子が高輝度に発光すること
は、コダック社のC.W.Tangらによって初めて示
された(Appl.Phys.Lett.51(12)
21、p.913、1987)。コダック社の提示した
有機積層薄膜発光素子の代表的な構成は、ITOガラス
基板上に正孔輸送性のジアミン化合物、発光層であり、
電子輸送性も併せ持った8−ヒドロキシキノリンアルミ
ニウム、そして負極としてMg:Agを順次設けたもの
であり、10V程度の駆動電圧で1000カンデラ/平
方メートルの緑色発光が可能であった。現在の有機積層
薄膜発光素子は、上記の素子構成要素の他に、電子輸送
層を別に設けているものなど構成を変えているものもあ
るが、基本的にはコダック社の構成を踏襲している。[0003] It is known from Kodak's C.I. W. Tang et al. (Appl. Phys. Lett. 51 (12)
21, p. 913, 1987). A typical configuration of the organic laminated thin-film light emitting device presented by Kodak Company is a hole transporting diamine compound and a light emitting layer on an ITO glass substrate,
8-Hydroxyquinoline aluminum, which also has an electron transporting property, and Mg: Ag as a negative electrode were sequentially provided, and green light emission of 1000 candela / m 2 was possible at a driving voltage of about 10 V. The current organic laminated thin-film light-emitting device has a different configuration, such as a device provided with an electron transport layer, in addition to the above-described device components, but basically follows the configuration of Kodak. I have.
【0004】ところで有機積層薄膜発光素子(以下発光
素子)の正孔輸送材料においては、本来の役割である正
孔輸送性、正孔の注入が容易になるような他の材料との
仕事関数のバランス、素子化に必要な薄膜形成性、駆動
時の発熱および屋外や車中の使用を想定した耐熱性、そ
して総合的な耐久性が必要とされ、これまで様々な試み
がなされてきた。By the way, in the hole transporting material of an organic laminated thin film light emitting device (hereinafter referred to as a light emitting device), the hole transporting material, which is an essential role, has a work function with other materials that facilitates hole injection. Various attempts have been made until now, such as a balance, a thin film forming property necessary for device formation, heat generation during driving, heat resistance for use outdoors or in a vehicle, and overall durability.
【0005】具体的には、ヒドラゾン系化合物(特開昭
57−101844号公報、特開昭58−15936号
公報)、スチルベン系化合物(特開昭57−14875
0号公報、特開昭58−197043号公報)、トリフ
ェニルアミン系化合物(特公昭58−32372号公
報、特開平5−198377号公報)、オキサジアゾー
ル誘導体(特公昭34−10966号公報)やフタロシ
アニン誘導体(特開昭57−51781号公報、特開平
2−12795号公報)、ビスカルバゾール誘導体(特
開平8−3547号公報)等が知られている。Specifically, hydrazone-based compounds (JP-A-57-101844 and JP-A-58-15936) and stilbene-based compounds (JP-A-57-14875)
No. 0, JP-A-58-197043), triphenylamine-based compounds (JP-B-58-32372, JP-A-5-198377), oxadiazole derivatives (JP-B-34-10966). And phthalocyanine derivatives (JP-A-57-51781, JP-A-2-12795) and biscarbazole derivatives (JP-A-8-3547) are known.
【0006】また、異なる正孔輸送材料を積層すること
による性能向上も試みられている。具体的には、フタロ
シアニン誘導体とトリフェニルアミン系化合物(特開昭
63−295695号公報)、それぞれ異なるトリフェ
ニルアミン系化合物(特開平4−308688号公報)
の積層等が知られている。Attempts have also been made to improve performance by laminating different hole transport materials. Specifically, a phthalocyanine derivative, a triphenylamine-based compound (JP-A-63-29569), and different triphenylamine-based compounds (JP-A-4-308688)
Are known.
【0007】[0007]
【発明が解決しようとする課題】しかし、従来の技術で
は素子を放置しておくと、有機膜の結晶化が起こった
り、ダークスポットと呼ばれる非発光部が拡がるため、
素子の耐久性を向上させることが課題であった。However, in the prior art, if the element is left untreated, crystallization of the organic film occurs or a non-light-emitting portion called a dark spot expands.
The problem was to improve the durability of the element.
【0008】[0008]
【課題を解決するための手段】本発明は上記目的を達成
するために、正極と負極の間に発光を司る物質が存在
し、電気エネルギーにより発光する素子であって、該素
子が正孔輸送層を有し、該正孔輸送層が2種類以上の材
料が混合されて構成されることを特徴とする発光素子と
するものである。In order to achieve the above-mentioned object, the present invention provides a device which emits light by electric energy, in which a substance responsible for light emission is present between a positive electrode and a negative electrode. A light-emitting element having a layer, wherein the hole transport layer is formed by mixing two or more materials.
【0009】[0009]
【発明の実施の形態】本発明における正極は、光を取り
出すために透明であれば、酸化錫、酸化インジウム、酸
化錫インジウム(ITO)などの導電性金属酸化物、あ
るいは、金、銀、クロムなどの金属、ヨウ化銅、硫化銅
などの無機導電性物質、ポリチオフェン、ポリピロー
ル、ポリアニリンなどの導電性ポリマなど特に限定され
るものでないが、ITOガラスやネサガラスを用いるこ
とが望ましく、特にITOガラスを用いることが望まし
い。透明電極の抵抗は素子の発光に十分な電流が供給で
きればよいので限定されないが、素子の消費電力の観点
からは低抵抗であることが望ましい。例えば300Ω/
□以下のITOガラス基板であれば素子電極として機能
するが、現在では10Ω/□程度の基板の供給も可能に
なっていることから、20Ω/□以下の低抵抗の基板を
使用することが特に望ましい。ITOの厚みは抵抗値に
合わせて任意に選ぶ事ができるが、通常100〜300
nmの間で用いられることが多い。また、ガラス基板は
ソーダライムガラス、無アルカリガラスなどが用いら
れ、また厚みも機械的強度を保つのに十分な厚みがあれ
ばよいので、0.7mm以上あれば十分である。ガラス
の材質については、ガラスからの溶出イオンが少ない方
がよいので無アルカリガラスの方が好ましいが、SiO
2などのバリアコートを施したソーダライムガラスも市
販されているのでこれを使用できる。ガラス以外の基板
を用いる場合でも、透明で封止効果の高いものであれば
構わない。ITO膜形成方法は、電子ビーム蒸着法、ス
パッタリング法、化学反応法など特に制限を受けるもの
ではない。ITOガラス基板はよく洗浄されていること
が望ましく、またよく乾燥されていることが望ましい。BEST MODE FOR CARRYING OUT THE INVENTION A positive electrode according to the present invention is made of a conductive metal oxide such as tin oxide, indium oxide, indium tin oxide (ITO), or gold, silver, chromium, if it is transparent to extract light. Such metals, copper iodide, inorganic conductive substances such as copper sulfide, and conductive polymers such as polythiophene, polypyrrole, and polyaniline are not particularly limited. However, it is preferable to use ITO glass or Nesa glass. It is desirable to use. The resistance of the transparent electrode is not limited as long as a current sufficient for light emission of the element can be supplied, but is preferably low from the viewpoint of power consumption of the element. For example, 300Ω /
If it is an ITO glass substrate of □ or less, it functions as an element electrode, but it is now possible to supply a substrate of about 10 Ω / □, so it is particularly preferable to use a low-resistance substrate of 20 Ω / □ or less. desirable. The thickness of the ITO can be arbitrarily selected according to the resistance value.
Often used between nm. Further, as the glass substrate, soda lime glass, non-alkali glass or the like is used, and the thickness only needs to be sufficient to maintain the mechanical strength. As for the material of the glass, alkali-free glass is preferred because it is better that ions eluted from the glass are small.
Soda lime glass having a barrier coat such as No. 2 is also commercially available and can be used. Even when a substrate other than glass is used, any substrate may be used as long as it is transparent and has a high sealing effect. The method of forming the ITO film is not particularly limited, such as an electron beam evaporation method, a sputtering method, and a chemical reaction method. It is desirable that the ITO glass substrate be well cleaned and well dried.
【0010】本発明における発光を司る物質の構成は、
1)正孔輸送材料/発光材料、2)正孔輸送材料/発光
材料/電子輸送材料、3)発光材料/電子輸送材料、そ
して、4)以上の組合わせ物質を一層に混合した形態、
のいずれであってもよい。即ち、上記1)〜3)の多層
積層構造の他に,4)のように発光材料単独または発光
材料と正孔輸送材料、あるいは発光材料と正孔輸送材料
および電子輸送材料を含む層を一層設けるだけでもよ
い。発光材料はホスト材料のみでも、ホスト材料とドー
パント材料の組み合わせでも、いずれであってもよい。
また、ドーパント材料はホスト材料の全体に含まれてい
ても、部分的に含まれていても、いずれであってもよ
い。ドーパント材料は積層されていても、分散されてい
ても、いずれであってもよい。The composition of the substance that controls light emission in the present invention is as follows:
1) a hole transporting material / a light emitting material, 2) a hole transporting material / a light emitting material / an electron transporting material, 3) a light emitting material / an electron transporting material, and 4) a form in which a combination of the above substances is mixed.
Any of these may be used. That is, in addition to the multi-layer structure of 1) to 3), a layer containing a luminescent material alone or a luminescent material and a hole transporting material, or a layer containing a luminescent material, a hole transporting material and an electron transporting material as in 4) is further provided. It may just be provided. The light emitting material may be either a host material alone or a combination of a host material and a dopant material.
In addition, the dopant material may be included in the entire host material, partially, or may be included. The dopant material may be stacked, dispersed, or the like.
【0011】本発明における正孔輸送材料としては、電
界を与えられた電極間において正極からの正孔を効率良
く輸送することが必要で、正孔注入効率が高く、注入さ
れた正孔を効率良く輸送することが望ましい。そのため
にはイオン化ポテンシャルが小さく、しかも正孔移動度
が大きく、さらに安定性に優れ、トラップとなる不純物
が製造時および使用時に発生しにくい物質であることが
要求される。また素子化に必要な薄膜形成性を有し、駆
動時の発熱および屋外や車中の使用を想定した耐熱性も
高く、総合的な耐久性に優れたものでなくてはならな
い。The hole transport material in the present invention is required to efficiently transport holes from the positive electrode between the electrodes to which an electric field is applied, and has a high hole injection efficiency. Good transport is desirable. For that purpose, it is required that the ionization potential be small, the hole mobility be large, the stability be further improved, and impurities serving as traps be hardly generated during production and use. Further, it must have the property of forming a thin film necessary for device formation, high heat generation during driving and high heat resistance assuming use outdoors or in a vehicle, and excellent overall durability.
【0012】このような条件を単独で満たす物質を発見
するのは困難であり、本発明では正孔輸送層が2種類以
上の材料を混合して構成され、必要な役割を補完するこ
とが特徴である。具体的には、諸特性に優れるが製膜性
に劣る材料と製膜性に優れる材料、諸特性に優れるが耐
熱性に劣る材料と耐熱性に優れる材料、正孔輸送性に優
れる材料と正孔注入性に優れる材料、などがあげられ
る。[0012] It is difficult to find a substance that satisfies such a condition alone, and the present invention is characterized in that the hole transport layer is composed of a mixture of two or more materials and complements the necessary role. It is. Specifically, materials having excellent properties but poor film forming properties and materials having excellent film forming properties, materials having excellent properties but poor heat resistance and materials having excellent heat resistance, and materials having excellent hole transport properties and positive Materials having excellent hole injecting properties, and the like.
【0013】正孔輸送層の形態は、混合層のみであって
も、単独層や異なる混合層と組み合わされても構わな
い。混合の割合も特に限定されるものではなく、一様に
混合されても、厚み方向に比率を変えても構わない。ま
た、本発明では正孔輸送層に正孔注入層部分が含まれて
いても構わない。The form of the hole transport layer may be a mixed layer alone, or a single layer or a combination of different mixed layers. The mixing ratio is not particularly limited either, and the mixing may be uniform or the ratio may be changed in the thickness direction. In the present invention, the hole transport layer may include a hole injection layer portion.
【0014】正孔輸送材料の混合の方法は特に限定され
るものではないが、混合分散後塗布、共蒸着、積層後の
加熱拡散等があげられるが、共蒸着が特性面で好まし
い。The method of mixing the hole transport material is not particularly limited, and examples thereof include coating after mixing and dispersion, co-evaporation, and heat diffusion after lamination, and co-evaporation is preferred in terms of characteristics.
【0015】正孔輸送性を有しない材料の割合が多くな
ると、正孔輸送が困難になるので、2種類以上の材料は
それぞれが正孔輸送性を有していることが望ましい。正
孔注入性に優れ、耐熱性にも優れていることから、正孔
輸送材料の少なくとも1つがフタロシアニン誘導体、ポ
リアニリン誘導体、ポリチオフェン誘導体であることが
好ましく、中でも銅フタロシアニンを好適な例としてあ
げることができる。When the proportion of the material having no hole transporting property increases, the hole transporting becomes difficult. Therefore, it is preferable that each of the two or more kinds of materials has the hole transporting property. It is preferable that at least one of the hole transporting materials is a phthalocyanine derivative, a polyaniline derivative, or a polythiophene derivative because of excellent hole injecting property and excellent heat resistance. it can.
【0016】正孔輸送能に優れることから、上記正孔輸
送材料と好適な組み合わせとして、正孔輸送材料の少な
くとも1つがビス(N−(m−メチルフェニル)カルバ
ゾール)、ビス(N−エチルカルバゾール)、ビス(N
−ナフチルカルバゾール)等のビスカルバゾリル誘導体
や、TPD、α−NPD、MTDATA、スピロ構造を
有するトリフェニルアミン化合物等のトリアリールアミ
ン誘導体であることが好ましい。[0016] Because of its excellent hole transporting ability, as a suitable combination with the above hole transporting material, at least one of the hole transporting materials is bis (N- (m-methylphenyl) carbazole) or bis (N-ethylcarbazole). ), Screw (N
-Naphthylcarbazole) or a triarylamine derivative such as TPD, α-NPD, MTDATA, or a triphenylamine compound having a spiro structure.
【0017】耐熱性の面でもビスカルバゾリル誘導体は
好ましく、トリアリールアミン誘導体の中ではアリール
基の少なくとも1つが縮合環であるものがより好まし
い。In terms of heat resistance, biscarbazolyl derivatives are preferable, and among the triarylamine derivatives, those in which at least one of the aryl groups is a condensed ring are more preferable.
【0018】その他の組み合わせて用いる正孔輸送材料
としては特に限定されるものではないが、ピラゾリン誘
導体、スチルベン系化合物、ヒドラゾン系化合物、オキ
サジアゾール誘導体や複素環化合物、ポリビニルカルバ
ゾール、ポリシランなどの既知の正孔輸送材料を使用で
きる。Other hole transporting materials used in combination are not particularly limited, but include known compounds such as pyrazoline derivatives, stilbene compounds, hydrazone compounds, oxadiazole derivatives and heterocyclic compounds, polyvinylcarbazole and polysilane. Can be used.
【0019】本発明における発光材料の内、ホスト材料
としては特に限定されるものではないが、以前から発光
体として知られていたアントラセンやピレンなどの縮合
環誘導体、トリス(8−キノリノラト)アルミニウムを
始めとする金属キレート化オキシノイド化合物、ビスス
チリルアントラセン誘導体やジスチリルベンゼン誘導体
などのビススチリル誘導体、テトラフェニルブタジエン
誘導体、クマリン誘導体、オキサジアゾール誘導体、ピ
ロロピリジン誘導体、ペリノン誘導体、シクロペンタジ
エン誘導体、オキサジアゾール誘導体、チアジアゾロピ
リジン誘導体、ポリマー系では、ポリフェニレンビニレ
ン誘導体、ポリパラフェニレン誘導体、そして、ポリチ
オフェン誘導体などが使用できる。Among the luminescent materials in the present invention, the host material is not particularly limited, but tris (8-quinolinolato) aluminum, a condensed ring derivative such as anthracene or pyrene, which has long been known as a luminescent material, may be used. Metal chelated oxinoid compounds, bisstyryl derivatives such as bisstyrylanthracene derivatives and distyrylbenzene derivatives, tetraphenylbutadiene derivatives, coumarin derivatives, oxadiazole derivatives, pyrrolopyridine derivatives, perinone derivatives, cyclopentadiene derivatives, oxadiazole For derivatives, thiadiazolopyridine derivatives, and polymer systems, polyphenylenevinylene derivatives, polyparaphenylene derivatives, and polythiophene derivatives can be used.
【0020】ホスト材料に添加するドーパント材料とし
ては特に限定されるものではないが、具体的には従来か
ら知られている、ペリレン、ルブレンなどの縮合環誘導
体、キナクリドン誘導体、フェノキサゾン660、DC
M1、ペリノン、クマリン誘導体などがそのまま使用で
きる。これらのドーパント材料は単独でも、異なるドー
パント材料と併用しても構わない。The dopant material added to the host material is not particularly limited, but specific examples thereof include conventionally known condensed ring derivatives such as perylene and rubrene, quinacridone derivatives, phenoxazone 660, DC
M1, perinone, coumarin derivatives and the like can be used as they are. These dopant materials may be used alone or in combination with different dopant materials.
【0021】本発明における電子輸送性材料としては、
電界を与えられた電極間において負極からの電子を効率
良く輸送することが必要で、電子注入効率が高く、注入
された電子を効率良く輸送することが望ましい。そのた
めには電子親和力が大きく、しかも電子移動度が大き
く、さらに安定性に優れ、トラップとなる不純物が製造
時および使用時に発生しにくい物質であることが要求さ
れる。このような条件を満たす物質として、8−ヒドロ
キシキノリンアルミニウムに代表されるキノリノール誘
導体金属錯体、トロポロン金属錯体、フラボノール金属
錯体、ペリレン誘導体、ペリノン誘導体、ナフタレン、
クマリン誘導体、オキサジアゾール誘導体、アルダジン
誘導体、ビススチリル誘導体、ピラジン誘導体、フェナ
ントロリン誘導体などがあるが特に限定されるものでは
ない。これらの電子輸送材料は単独でも用いられるが、
異なる電子輸送材料と積層または混合して使用しても構
わない。As the electron transporting material in the present invention,
It is necessary to efficiently transport electrons from the negative electrode between the electrodes to which an electric field is applied, and it is desirable that the electron injection efficiency is high and the injected electrons are transported efficiently. For this purpose, it is required that the material has a high electron affinity, a high electron mobility, a high stability, and a small amount of impurities serving as traps during production and use. Materials satisfying such conditions include quinolinol derivative metal complexes represented by 8-hydroxyquinoline aluminum, tropolone metal complexes, flavonol metal complexes, perylene derivatives, perinone derivatives, naphthalene,
There are coumarin derivatives, oxadiazole derivatives, aldazine derivatives, bisstyryl derivatives, pyrazine derivatives, phenanthroline derivatives, and the like, but are not particularly limited. Although these electron transport materials are used alone,
They may be laminated or mixed with different electron transport materials.
【0022】以上の正孔輸送層、発光層、電子輸送層に
用いられる材料は単独で各層を形成することができる
が、高分子結着剤としてポリ塩化ビニル、ポリカ−ボネ
−ト、ポリスチレン、ポリ(N−ビニルカルバゾ−
ル)、ポリメチルメタクリレ−ト、ポリブチルメタクリ
レート、ポリエステル、ポリスルフォン、ポリフェニレ
ンオキサイド、ポリブタジエン、炭化水素樹脂、ケトン
樹脂、フェノキシ樹脂、ポリアミド、エチルセルロ−
ス、酢酸ビニル、ABS樹脂、ポリウレタン樹脂などの
溶剤可溶性樹脂や、フェノ−ル樹脂、キシレン樹脂、石
油樹脂、ユリア樹脂、メラミン樹脂、不飽和ポリエステ
ル樹脂、アルキド樹脂、エポキシ樹脂、シリコーン樹脂
などの硬化性樹脂などに分散させて用いることも可能で
ある。The above materials used for the hole transporting layer, the light emitting layer and the electron transporting layer can be used alone to form each layer. Examples of the polymer binder include polyvinyl chloride, polycarbonate, polystyrene, and the like. Poly (N-vinyl carbazo-
), Polymethyl methacrylate, polybutyl methacrylate, polyester, polysulfone, polyphenylene oxide, polybutadiene, hydrocarbon resin, ketone resin, phenoxy resin, polyamide, ethyl cellulose
Curing of solvent-soluble resins such as water, vinyl acetate, ABS resin and polyurethane resin, phenol resin, xylene resin, petroleum resin, urea resin, melamine resin, unsaturated polyester resin, alkyd resin, epoxy resin, silicone resin, etc. It is also possible to use it by dispersing it in a conductive resin or the like.
【0023】本発明における発光を司る物質の形成方法
は、抵抗加熱蒸着、電子ビーム蒸着、スパッタリング
法、ディップコーティング法、スピンキャスト法など特
に限定されるものではないが、通常は、抵抗加熱蒸着、
電子ビーム蒸着が特性面で好ましい。層の厚みは発光を
司る物質の抵抗値にもよるので限定できないが、10〜
1000nmの間から選ばれる。The method of forming the substance which controls light emission in the present invention is not particularly limited, such as resistance heating evaporation, electron beam evaporation, sputtering, dip coating, and spin casting.
Electron beam evaporation is preferred in terms of properties. The thickness of the layer cannot be limited because it depends on the resistance of the substance that controls light emission.
It is selected from between 1000 nm.
【0024】本発明における負極は、電子を効率よく、
発光を司る物質に注入できる物質であれば特に限定され
ない。一般的には白金、金、銀、銅、鉄、錫、アルミニ
ウム、インジウム、リチウム、ナトリウム、カリウム、
カルシウム、マグネシウムなどがあげられる。電子注入
効率を上げて素子特性を向上させるためには、リチウ
ム、ナトリウム、カリウム、カルシウム、マグネシウム
などの低仕事関数金属が有効である。しかし、これらの
低仕事関数金属は一般に不安定であるので、安定な金属
との合金あるいは積層構造にするのが望ましい。あるい
は発光を司る物質にドーピングする方法も有効である。
電極の作製法については、抵抗加熱蒸着法、電子ビーム
蒸着法、スパッタリング法、イオンプレーティング法な
ど導通を取ることができれば、特に制限されるものでは
ないが、抵抗加熱蒸着法あるいは電子ビーム蒸着法が特
性面で好ましい。The negative electrode of the present invention efficiently converts electrons,
The substance is not particularly limited as long as it can be injected into the substance that controls light emission. Generally, platinum, gold, silver, copper, iron, tin, aluminum, indium, lithium, sodium, potassium,
Examples include calcium and magnesium. In order to increase the electron injection efficiency and improve the device characteristics, a low work function metal such as lithium, sodium, potassium, calcium, and magnesium is effective. However, since these low work function metals are generally unstable, it is desirable to form an alloy or a laminated structure with the stable metal. Alternatively, a method of doping a substance which controls light emission is also effective.
The method for manufacturing the electrode is not particularly limited as long as it can conduct electricity such as a resistance heating evaporation method, an electron beam evaporation method, a sputtering method, and an ion plating method. Is preferred in terms of characteristics.
【0025】本発明における発光素子は封止をしても構
わない。また、その前に発光素子を保護するために保護
層を設けても構わない。保護層の材料としては、白金、
金、銀、銅、鉄、錫、鉛、アルミニウム、チタン、ニッ
ケル、インジウムなどの金属、またはこれらの金属を用
いた合金、そしてシリカ、チタニア、アルミナ、酸化マ
グネシウム、酸化イットリウム、酸化ゲルマニウム、酸
化ニッケル、酸化バリウム、酸化カルシウム、酸化鉄な
どの金属酸化物、フッ化マグネシウム、フッ化リチウ
ム、フッ化アルミニウム、フッ化カルシウムなどの金属
フッ化物、フッ素系樹脂などの樹脂類などがあげられる
が、特に限定されるものではない。The light emitting device of the present invention may be sealed. Before that, a protective layer may be provided to protect the light-emitting element. Platinum,
Metals such as gold, silver, copper, iron, tin, lead, aluminum, titanium, nickel, and indium, or alloys using these metals, and silica, titania, alumina, magnesium oxide, yttrium oxide, germanium oxide, and nickel oxide , Barium oxide, calcium oxide, metal oxides such as iron oxide, magnesium fluoride, lithium fluoride, aluminum fluoride, metal fluorides such as calcium fluoride, resins such as fluororesins, and the like. It is not limited.
【0026】本発明における封止の方法は封止材による
容器内に発光素子を入れて接着剤で封止する方法や、発
光素子が形成された基板と薄板状の封止材で挟み込んで
接着剤で封止する方法などがあげられるが、特に限定さ
れるものではない。The sealing method in the present invention is a method of putting a light emitting element in a container made of a sealing material and sealing it with an adhesive, or bonding the light emitting element to a substrate on which the light emitting element is formed by sandwiching it with a thin sealing material. Examples include a method of sealing with an agent, but the method is not particularly limited.
【0027】封止材は発光素子に水分が侵入するのを防
止するものであれば、特に制限されるものではない。具
体的にはソーダ石灰ガラス、硼硅酸塩ガラス、硅酸塩ガ
ラス、シリカガラス、無蛍光ガラス、石英、セラミック
スなどの無機物や、ステンレス、アルミニウム合金など
の金属、フッ素系樹脂、アクリル系樹脂、ポリカーボネ
ート系樹脂、エポキシ系樹脂、ポリエステル系樹脂、ポ
リアミド系樹脂、ポリスチレン系樹脂、ポリエチレン系
樹脂、ポリプロピレン系樹脂、ポリオレフィン系樹脂、
シリコーン系樹脂などの樹脂類があげられる。The sealing material is not particularly limited as long as it prevents moisture from entering the light emitting element. Specifically, soda-lime glass, borosilicate glass, silicate glass, silica glass, non-fluorescent glass, quartz, inorganic substances such as ceramics, metals such as stainless steel and aluminum alloy, fluorine resin, acrylic resin, Polycarbonate resin, epoxy resin, polyester resin, polyamide resin, polystyrene resin, polyethylene resin, polypropylene resin, polyolefin resin,
Examples include resins such as silicone resins.
【0028】封止に用いる接着剤は封止効果を有するも
のであれば特に制限されるものではない。具体的には、
エポキシ樹脂系接着剤、アクリレート樹脂系接着剤など
を用いることができる。また、光硬化性樹脂接着剤、熱
硬化性樹脂接着剤、嫌気性樹脂接着剤などを用いること
ができる。The adhesive used for sealing is not particularly limited as long as it has a sealing effect. In particular,
An epoxy resin-based adhesive, an acrylate resin-based adhesive, or the like can be used. In addition, a photocurable resin adhesive, a thermosetting resin adhesive, an anaerobic resin adhesive, or the like can be used.
【0029】発光素子と封止材の間には吸着剤を含んで
も構わない。吸着剤は封止後において外部から侵入する
水分を吸着するものであれば特に限定されるものではな
い。具体的には、活性アルミナ、珪藻土、活性炭、五酸
化リン、過塩素酸マグネシウム、水酸化カリウム、硝酸
カルシウム、臭化カルシウム、酸化カルシウム、酸化バ
リウム、炭酸バリウム、塩化亜鉛、臭化亜鉛、無水硫酸
銅などの無機化合物、リチウム、ベリリウム、カリウ
ム、ナトリウム、マグネシウム、ルビジウム、ストロン
チウム、カルシウムなど金属およびその合金、アクリル
系やメタクリル系吸水ポリマーなどがあげられる。An adsorbent may be included between the light emitting element and the sealing material. The adsorbent is not particularly limited as long as it adsorbs moisture that enters from outside after sealing. Specifically, activated alumina, diatomaceous earth, activated carbon, phosphorus pentoxide, magnesium perchlorate, potassium hydroxide, calcium nitrate, calcium bromide, calcium oxide, barium oxide, barium carbonate, zinc chloride, zinc bromide, sulfuric anhydride Examples include inorganic compounds such as copper, metals such as lithium, beryllium, potassium, sodium, magnesium, rubidium, strontium, and calcium and alloys thereof, and acrylic and methacrylic water-absorbing polymers.
【0030】本発明における電気エネルギーとは主に直
流電流を指すが、パルス電流や交流電流を用いることも
可能である。電流値および電圧値は特に制限はないが、
素子の消費電力、寿命を考慮すると、できるだけ低いエ
ネルギーで最大の輝度が得られるようにするべきであ
る。The electric energy in the present invention mainly refers to a direct current, but it is also possible to use a pulse current or an alternating current. The current value and voltage value are not particularly limited,
In consideration of the power consumption and life of the device, it is necessary to obtain the maximum brightness with the lowest possible energy.
【0031】本発明の発光素子はマトリクスまたはセグ
メント方式、あるいはその両者を組み合わせることによ
って表示するディスプレイを構成することが好ましい。It is preferable that the light emitting device of the present invention constitutes a display for displaying by a matrix or segment system or a combination of both.
【0032】本発明におけるマトリクスは、表示のため
の画素が格子状に配置されたものをいい、画素の集合で
文字や画像を表示する。画素の形状、サイズは用途によ
って決まる。例えばパソコン、モニター、テレビの画像
および文字表示には、通常、一辺が300μm以下の四
角形の画素が用いられるし、表示パネルのような大型デ
ィスプレイの場合は、一辺がmmオーダーの画素を用い
ることになる。モノクロ表示の場合は、同じ色の画素を
配列すればよいが、カラー表示の場合には赤、緑、青の
画素を並べて表示させる。この場合典型的にはデルタタ
イプとストライプタイプがある。尚、本発明における発
光素子は、赤、緑、青色発光が可能であるので、前記表
示方法を用いれば、マルチカラーまたはフルカラー表示
もできる。そして、このマトリクスの駆動方法として
は、線順次駆動方法やアクティブマトリックスのどちら
でもよい。線順次駆動の方が構造が簡単という利点があ
るが、動作特性を考慮するとアクティブマトリックスの
方が優れる場合があるので、これも用途により使い分け
ることが必要である。The matrix in the present invention refers to a matrix in which pixels for display are arranged in a lattice, and displays a character or an image by a set of pixels. The shape and size of the pixel depend on the application. For example, for the display of images and characters on personal computers, monitors, televisions, and the like, generally square pixels with a side of 300 μm or less are used, and in the case of a large display such as a display panel, pixels with a side on the order of mm are used. Become. In the case of monochrome display, pixels of the same color may be arranged, but in the case of color display, red, green and blue pixels are displayed side by side. In this case, there are typically a delta type and a stripe type. Note that the light-emitting element of the present invention can emit red, green, and blue light, so that multi-color or full-color display can be performed by using the display method. The matrix may be driven by either a line-sequential driving method or an active matrix. The line-sequential driving has the advantage of a simpler structure, but the active matrix is sometimes superior in consideration of the operating characteristics. Therefore, it is necessary to use this depending on the application.
【0033】本発明におけるセグメントタイプは、予め
決められた情報を表示するようにパターンを形成し、決
められた領域を発光させる。例えば、デジタル時計や温
度計における時刻や温度表示、オーディオ機器や電磁調
理器などの動作状態表示、自動車のパネル表示などがあ
げられる。そして、前記マトリクス表示とセグメント表
示は同じパネルの中に共存していてもよい。In the segment type according to the present invention, a pattern is formed so as to display predetermined information, and a predetermined area emits light. For example, there are a time display and a temperature display on a digital clock or a thermometer, an operation state display of an audio device, an electromagnetic cooker, or the like, and a panel display of an automobile. The matrix display and the segment display may coexist in the same panel.
【0034】本発明の発光素子はバックライトとしても
好ましく用いられる。本発明におけるバックライトは、
主に自発光しない表示装置の視認性を向上させる目的に
使用され、液晶表示装置、時計、オーディオ装置、自動
車パネル、表示板、標識などに使用される。特に液晶表
示装置、中でも薄型化が課題となっているパソコン用途
のバックライトとしては、従来方式のものが蛍光灯や導
光板からなっているため薄型化が困難であることを考え
ると、本発明におけるバックライトは薄型、軽量が特徴
になる。The light emitting device of the present invention is also preferably used as a backlight. The backlight in the present invention,
It is mainly used for improving the visibility of a display device that does not emit light, and is used for a liquid crystal display device, a clock, an audio device, an automobile panel, a display panel, a sign, and the like. In particular, as for the backlight for liquid crystal display devices, particularly for personal computer applications where thinning is an issue, the present invention is considered to be difficult because the conventional type is made of a fluorescent lamp or a light guide plate, and it is difficult to make it thin. Is characterized by its thinness and light weight.
【0035】[0035]
【実施例】以下、実施例および比較例をあげて本発明を
説明するが、本発明はこれらの例によって限定されるも
のではない。The present invention will be described below with reference to examples and comparative examples, but the present invention is not limited to these examples.
【0036】実施例1 ITO透明導電膜を150nm堆積させたガラス基板
(旭硝子社製、15Ω/□、電子ビーム蒸着品)を30
×40mmに切断、エッチングを行った。得られた基板
をアセトン、セミコクリン56で各々15分間超音波洗
浄してから、超純水で洗浄した。続いてイソプロピルア
ルコールで15分間超音波洗浄してから熱メタノールに
15分間浸漬させて乾燥させた。この基板を素子を作製
する直前に1時間UV−オゾン処理し、真空蒸着装置内
に設置して、装置内の真空度が5×10-5Pa以下にな
るまで排気した。抵抗加熱法によって、まず正孔輸送材
料として銅フタロシアニンと3,3’−ビス(N−(m
−メチル)フェニルカルバゾール)を1:4の割合で1
05nm共蒸着し、3,3’−ビス(N−(m−メチ
ル)フェニルカルバゾール)を15nm単独で蒸着し
た。次にホスト材料としてトリスキノリノラートアルミ
ニウム(III)を100nm蒸着した。次にリチウム
を0.5nm、アルミニウムを200nm蒸着して陰極
とし、真空一環で5×5mm角の素子を作製した。ここ
で言う膜厚は表面粗さ計での測定値で補正した水晶発振
式膜厚モニター表示値である。この発光素子を大気中に
取り出して放置した後に発光させた。1ヶ月放置しても
発光が観察された。Example 1 A glass substrate (15 Ω / □, electron beam evaporated product, manufactured by Asahi Glass Co., Ltd.) on which an ITO transparent conductive film was deposited to a thickness of 150 nm
The wafer was cut into a size of 40 mm and etched. The obtained substrate was subjected to ultrasonic cleaning with acetone and semicocrine 56 for 15 minutes each, and then with ultrapure water. Subsequently, the substrate was subjected to ultrasonic cleaning with isopropyl alcohol for 15 minutes, immersed in hot methanol for 15 minutes, and dried. This substrate was subjected to UV-ozone treatment for 1 hour immediately before producing the element, placed in a vacuum evaporation apparatus, and evacuated until the degree of vacuum in the apparatus became 5 × 10 −5 Pa or less. First, copper phthalocyanine and 3,3′-bis (N- (m
-Methyl) phenylcarbazole) in a ratio of 1: 4 to 1
05 nm was co-evaporated, and 3,3′-bis (N- (m-methyl) phenylcarbazole) was independently evaporated at 15 nm. Next, 100 nm of trisquinolinolate aluminum (III) was deposited as a host material. Next, 0.5 nm of lithium and 200 nm of aluminum were vapor-deposited to form a cathode. The film thickness referred to here is a value displayed on a crystal oscillation type film thickness monitor corrected by a value measured by a surface roughness meter. The light emitting device was taken out into the atmosphere and allowed to emit light after being allowed to stand. Light emission was observed even after one month of standing.
【0037】比較例1 正孔輸送材料として銅フタロシアニンを20nm単独で
蒸着し、3,3’−ビス(N−(m−メチル)フェニル
カルバゾール)を100nm単独で蒸着した以外は実施
例1と全く同様にして作製した素子を大気中に取り出し
て放置した後に発光させた。1日放置しただけで非発光
部分が肉眼で観察され、10日間放置すると全く発光し
なくなった。COMPARATIVE EXAMPLE 1 Except that copper phthalocyanine was solely deposited as a hole transport material by 20 nm and 3,3′-bis (N- (m-methyl) phenylcarbazole) was solely deposited by 100 nm, and was completely the same as in Example 1. The device produced in the same manner was taken out into the atmosphere and allowed to stand, and then emitted light. The non-light-emitting portion was observed with the naked eye only after standing for one day, and no light emission was observed after leaving for 10 days.
【0038】実施例2 3,3’−ビス(N−(m−メチル)フェニルカルバゾ
ール)の代わりに4,4’−ビス(N−(m−トリル)
−N−フェニルアミノ)ビフェニルを用いた以外は実施
例1と全く同様にして作製した素子を大気中に取り出し
て放置した後に発光させた。1ヶ月放置しても発光が観
察された。Example 2 Instead of 3,3'-bis (N- (m-methyl) phenylcarbazole), 4,4'-bis (N- (m-tolyl)
A device manufactured in exactly the same manner as in Example 1 except that (-N-phenylamino) biphenyl was used was taken out into the air and left to emit light. Light emission was observed even after one month of standing.
【0039】実施例3 3,3’−ビス(N−(m−メチル)フェニルカルバゾ
ール)の代わりに4,4’−ビス(N−(2−ナフチ
ル)−N−フェニルアミノ)ビフェニルを用いた以外は
実施例1と全く同様にして作製した素子を大気中に取り
出して放置した後に発光させた。1ヶ月放置しても発光
が観察された。Example 3 4,4'-bis (N- (2-naphthyl) -N-phenylamino) biphenyl was used in place of 3,3'-bis (N- (m-methyl) phenylcarbazole). Except for this point, the device manufactured in exactly the same manner as in Example 1 was taken out into the air and left to emit light. Light emission was observed even after one month of standing.
【0040】[0040]
【発明の効果】本発明は、耐久性の向上した発光素子を
提供できるものである。According to the present invention, a light emitting device having improved durability can be provided.
フロントページの続き Fターム(参考) 3K007 AB00 AB13 BA06 BB05 CA01 CB01 DA00 DB03 EB00 FA01 5C094 AA31 BA27 CA14 CA19 EA05 EB02 FB01 HA01 HA10 Continued on the front page F term (reference) 3K007 AB00 AB13 BA06 BB05 CA01 CB01 DA00 DB03 EB00 FA01 5C094 AA31 BA27 CA14 CA19 EA05 EB02 FB01 HA01 HA10
Claims (7)
し、電気エネルギーにより発光する素子であって、該素
子が正孔輸送層を有し、該正孔輸送層が2種類以上の材
料が混合されて構成されることを特徴とする発光素子。1. An element which emits light by electric energy in which a substance responsible for light emission exists between a positive electrode and a negative electrode, wherein the element has a hole transport layer, and the hole transport layer comprises two or more kinds of holes. A light-emitting element comprising a mixture of materials.
って成されることを特徴とする請求項1記載の発光素
子。2. The light-emitting device according to claim 1, wherein said hole transport layer is mixed by co-evaporation.
れが正孔輸送材料であることを特徴とする請求項1また
は2記載の発光素子。3. The light emitting device according to claim 1, wherein each of the two or more materials of the hole transport layer is a hole transport material.
ロシアニン誘導体であることを特徴とする請求項3記載
の発光素子。4. The light emitting device according to claim 3, wherein at least one of said hole transport materials is a phthalocyanine derivative.
カルバゾリル誘導体および/またはトリアリールアミン
誘導体であることを特徴とする請求項4記載の発光素
子。5. The light emitting device according to claim 4, wherein at least one of said hole transport materials is a biscarbazolyl derivative and / or a triarylamine derivative.
グメント方式によって表示するディスプレイを構成する
ことを特徴とする請求項1〜5のいずれか記載の発光素
子。6. The light emitting device according to claim 1, wherein said light emitting device constitutes a display for displaying in a matrix and / or segment system.
徴とする請求項1〜5のいずれか記載の発光素子。7. The light emitting device according to claim 1, wherein said light emitting device is a backlight.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10240332A JP2000068064A (en) | 1998-08-26 | 1998-08-26 | Luminescent element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10240332A JP2000068064A (en) | 1998-08-26 | 1998-08-26 | Luminescent element |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2000068064A true JP2000068064A (en) | 2000-03-03 |
Family
ID=17057914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10240332A Pending JP2000068064A (en) | 1998-08-26 | 1998-08-26 | Luminescent element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2000068064A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003157980A (en) * | 2001-11-08 | 2003-05-30 | Xerox Corp | Organic green light emitting element |
JP2003272870A (en) * | 2002-03-15 | 2003-09-26 | Denso Corp | Organic el element |
KR100454500B1 (en) * | 2001-12-22 | 2004-10-28 | 한국전자통신연구원 | High efficient organic electro-luminescence device and method for manufacturing the same |
JP2009283491A (en) * | 2008-05-19 | 2009-12-03 | Toyota Central R&D Labs Inc | Organic light-emitting element and manufacturing method therefor |
WO2014163211A1 (en) | 2013-04-03 | 2014-10-09 | Canon Kabushiki Kaisha | Organic compound and organic light-emitting device |
US9312494B2 (en) | 2009-12-14 | 2016-04-12 | Canon Kabushiki Kaisha | Organic light emitting device |
-
1998
- 1998-08-26 JP JP10240332A patent/JP2000068064A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003157980A (en) * | 2001-11-08 | 2003-05-30 | Xerox Corp | Organic green light emitting element |
KR100454500B1 (en) * | 2001-12-22 | 2004-10-28 | 한국전자통신연구원 | High efficient organic electro-luminescence device and method for manufacturing the same |
JP2003272870A (en) * | 2002-03-15 | 2003-09-26 | Denso Corp | Organic el element |
JP2009283491A (en) * | 2008-05-19 | 2009-12-03 | Toyota Central R&D Labs Inc | Organic light-emitting element and manufacturing method therefor |
US9312494B2 (en) | 2009-12-14 | 2016-04-12 | Canon Kabushiki Kaisha | Organic light emitting device |
US9705087B2 (en) | 2009-12-14 | 2017-07-11 | Canon Kabushiki Kaisha | Organic light emitting device |
WO2014163211A1 (en) | 2013-04-03 | 2014-10-09 | Canon Kabushiki Kaisha | Organic compound and organic light-emitting device |
US9911921B2 (en) | 2013-04-03 | 2018-03-06 | Canon Kabushiki Kaisha | Organic compound and organic light-emitting device |
EP4075533A1 (en) | 2013-04-03 | 2022-10-19 | Canon Kabushiki Kaisha | Organic compound and organic light-emitting device |
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