WO2007077810A1 - 有機エレクトロルミネッセンス素子、表示装置及び照明装置 - Google Patents
有機エレクトロルミネッセンス素子、表示装置及び照明装置 Download PDFInfo
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- WO2007077810A1 WO2007077810A1 PCT/JP2006/325857 JP2006325857W WO2007077810A1 WO 2007077810 A1 WO2007077810 A1 WO 2007077810A1 JP 2006325857 W JP2006325857 W JP 2006325857W WO 2007077810 A1 WO2007077810 A1 WO 2007077810A1
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- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- BBDFECYVDQCSCN-UHFFFAOYSA-N n-(4-methoxyphenyl)-4-[4-(n-(4-methoxyphenyl)anilino)phenyl]-n-phenylaniline Chemical group C1=CC(OC)=CC=C1N(C=1C=CC(=CC=1)C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=CC(OC)=CC=1)C1=CC=CC=C1 BBDFECYVDQCSCN-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
- 125000005186 naphthyloxy group Chemical group C1(=CC=CC2=CC=CC=C12)O* 0.000 description 1
- 125000005146 naphthylsulfonyl group Chemical group C1(=CC=CC2=CC=CC=C12)S(=O)(=O)* 0.000 description 1
- 125000005029 naphthylthio group Chemical group C1(=CC=CC2=CC=CC=C12)S* 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical group C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 1
- 150000007978 oxazole derivatives Chemical class 0.000 description 1
- 125000000160 oxazolidinyl group Chemical group 0.000 description 1
- 125000005740 oxycarbonyl group Chemical group [*:1]OC([*:2])=O 0.000 description 1
- 125000003854 p-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1Cl 0.000 description 1
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000006340 pentafluoro ethyl group Chemical group FC(F)(F)C(F)(F)* 0.000 description 1
- 125000000538 pentafluorophenyl group Chemical group FC1=C(F)C(F)=C(*)C(F)=C1F 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical group CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 125000004115 pentoxy group Chemical group [*]OC([H])([H])C([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- BWUWTXKPVKAOED-UHFFFAOYSA-N pentylcarbamic acid Chemical group CCCCCNC(O)=O BWUWTXKPVKAOED-UHFFFAOYSA-N 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 125000003170 phenylsulfonyl group Chemical group C1(=CC=CC=C1)S(=O)(=O)* 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 238000001420 photoelectron spectroscopy Methods 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 125000005542 phthalazyl group Chemical group 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920000412 polyarylene Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000006308 propyl amino group Chemical group 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 125000003373 pyrazinyl group Chemical group 0.000 description 1
- JEXVQSWXXUJEMA-UHFFFAOYSA-N pyrazol-3-one Chemical class O=C1C=CN=N1 JEXVQSWXXUJEMA-UHFFFAOYSA-N 0.000 description 1
- 125000003226 pyrazolyl group Chemical group 0.000 description 1
- 125000001725 pyrenyl group Chemical group 0.000 description 1
- 125000005495 pyridazyl group Chemical group 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 1
- DLJHXMRDIWMMGO-UHFFFAOYSA-N quinolin-8-ol;zinc Chemical compound [Zn].C1=CN=C2C(O)=CC=CC2=C1.C1=CN=C2C(O)=CC=CC2=C1 DLJHXMRDIWMMGO-UHFFFAOYSA-N 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- YRGLXIVYESZPLQ-UHFFFAOYSA-I tantalum pentafluoride Chemical compound F[Ta](F)(F)(F)F YRGLXIVYESZPLQ-UHFFFAOYSA-I 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- IBBLKSWSCDAPIF-UHFFFAOYSA-N thiopyran Chemical compound S1C=CC=C=C1 IBBLKSWSCDAPIF-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 125000000025 triisopropylsilyl group Chemical group C(C)(C)[Si](C(C)C)(C(C)C)* 0.000 description 1
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- 125000006617 triphenylamine group Chemical group 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 238000004402 ultra-violet photoelectron spectroscopy Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/151—Copolymers
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium
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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6574—Polycyclic condensed heteroaromatic hydrocarbons comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6576—Polycyclic condensed heteroaromatic hydrocarbons comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1044—Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1074—Heterocyclic compounds characterised by ligands containing more than three nitrogen atoms as heteroatoms
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1092—Heterocyclic compounds characterised by ligands containing sulfur as the only heteroatom
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/185—Metal complexes of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2101/00—Properties of the organic materials covered by group H10K85/00
- H10K2101/10—Triplet emission
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/10—Transparent electrodes, e.g. using graphene
- H10K2102/101—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO]
- H10K2102/103—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO] comprising indium oxides, e.g. ITO
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/321—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3]
- H10K85/324—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3] comprising aluminium, e.g. Alq3
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/636—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/917—Electroluminescent
Definitions
- the present invention relates to an organic electoluminescence element, a display device, and a lighting device.
- ELD electoric luminescence display
- ELD constituent elements include inorganic electoluminescence elements and organic electroluminescence elements (hereinafter also referred to as organic EL elements).
- Inorganic electoric luminescence elements have been used as planar light sources, but an alternating high voltage is required to drive the light emitting elements.
- An organic EL element has a structure in which a light emitting layer containing a compound that emits light is sandwiched between a cathode and an anode.
- excitons Is a device that emits light by utilizing the emission of light (fluorescence 'phosphorescence) when this exciton is deactivated, and can emit light at a voltage of several volts to several tens of volts. Since it is a thin film type solid-state device that has a wide viewing angle and high visibility, it has attracted attention from the viewpoints of space saving and portability.
- a stilbene derivative, a distyrylarylene derivative or a tristyrylarylene derivative is doped with a trace amount of a phosphor to improve emission luminance and extend the lifetime of the element. Speak.
- an element having an organic light-emitting layer in which an 8-hydroxyquinoline aluminum complex is used as a host compound and a small amount of a phosphor is doped therein for example, JP-A 63-264692
- 8-hydroxy Devices having an organic light emitting layer in which a quinoline aluminum complex is a host compound and doped with a quinacridone dye are known (for example, JP-A-3-255190).
- Patent Document 5 Japanese Patent Laid-Open No. 2002-234894
- Patent Document 6 International Publication No. 02Z15645 Pamphlet
- Patent Document 7 International Publication No. 05Z7767 Pamphlet
- Patent Document 8 International Publication No. 05Z26231 Pamphlet
- X and Y represent 0, S, N—R (where R represents a hydrogen atom or a substituent), A 2 represents a hydrogen atom or a substituent, and at least one of A 2 is a substituent.
- ⁇ L 2 represents a divalent linking group, ⁇ represents an integer of 1 or more, nl, ⁇ 2 represents an integer of 0 or more, and represents ⁇ 3, ⁇ 4 ⁇ or 0 or ⁇ or 1. However, nl + n2 ⁇ 2.
- X represents 0, S, N—R (R represents a hydrogen atom or a substituent), n represents an integer of 2 or more, A 2 represents a hydrogen atom or a substituent, and at least one of A 2 represents a substituent. )
- X and Y represent 0, S, N—R (R represents a hydrogen atom or a substituent), nl, n2, n represents an integer of 1 or more, A 2 represents a hydrogen atom or a substituent, and at least one of A 2 represents a substituent. )
- a display device comprising the organic electoluminescence device according to any one of 1 to 18.
- An illuminating device comprising the organic electoluminescence device according to any one of 1 to 18 above.
- an organic electoluminescence element having a high luminous efficiency and a long luminous lifetime, and a display device and an illumination device including the organic electoluminescence element.
- FIG. 1 shows a schematic configuration diagram of an organic EL full-color display device.
- Examples of the substituent represented by A 2 include an alkyl group (for example, methyl group, ethyl group, propyl group, isopropyl group, tert-butyl group, pentyl group, hexyl group, octyl group, dodecyl group, tridecyl group).
- alkyl group for example, methyl group, ethyl group, propyl group, isopropyl group, tert-butyl group, pentyl group, hexyl group, octyl group, dodecyl group, tridecyl group.
- cycloalkyl group eg cyclopentyl group, cyclohexyl group etc.
- alkenyl group eg vinyl group, aryl group etc.
- alkynyl group eg Ether group, propargyl group, etc.
- aryl group for example, phenyl group, p-chlorophenyl group, mesityl group, tolyl group, xylyl group, naphthyl group, anthryl group, azulenyl group, acenaphthyl group, fluoride group
- aromatic heterocyclic group for example, furyl group, chael group, pyridyl group, pyridazyl group, pyrimidyl group, Birazyl group
- An acyl group for example, an acetyl group, an ethyl carbonate group, a propyl carbon group, a pentyl carbon group, a cyclohexyl carbon group, an octyl carbon group, a 2-ethyl hexyl carbon group, a dodecyl carbon group).
- acyloxy group for example, acetyl group
- Echirukarubo - Ruokishi group Buchirukarubo - Ruokishi group, Okuchirukarubo - Ruokishi group, Dodeshiruka Ruboniruokishi group, Hue - Rukarupo - Ruokishi group
- amide groups e.g., Mechirukarubo -Luamino group, ethyl carbolumino group, dimethyl carbolumino group, propyl carbolumino group, pentyl carbolumino group, cyclohexyl carbolumino group, 2 ethylhexyl carbolumino group, octyl carbolumino group, dodecyl carbo group -Luamino group,
- At least one of A 2 is a substituent containing a nitrogen atom.
- the substituent containing a nitrogen atom include a carbazolyl group, a carbolinyl group, a dialylamino group, and the like. Is preferred.
- n is preferably 2 or more and 10 or less, and more preferably 2 or more and 4 or less.
- n3 is preferably 1 or more and 5 or less, more preferably 1 or 2.
- it may be a group such as an alkylimino group, a dialkylsilane diyl group, a diarylgermandyl group, and the like, in which heteroatoms are joined and linked.
- the L3 is preferably an arylene group, a heteroarylene group, a divalent heterocyclic group, an alkylene group or the like, more preferably an arylene group, and particularly preferably m-phenylene. It is a group.
- the blocking layer is provided as necessary in addition to the basic constituent layer of the organic compound thin film as described above. For example, it is described in JP-A-11 204258, 11-204359, and “Organic EL device and the forefront of its industrialization” (published by NTS Corporation on November 30, 1998). There is a hole blocking layer.
- the present invention when a plurality of light-emitting layers are provided, it is determined that 50% by mass or more of the host compound in each of these layers is the same compound. Furthermore, it is preferable because the phosphorescence emission energy of the compound is 2.9 eV or more because it is advantageous for efficiently suppressing energy transfer from the dopant and obtaining high luminance. More preferred ,.
- the phosphorescence emission energy described in the present invention refers to the peak energy of the 0-0 transition band of the phosphorescence emission measured by measuring the photoluminescence of the deposited film of lOOnm on the substrate. .
- the host compound used in the present invention preferably has a phosphorescence energy of 2.9 eV or more and a Tg of 90 ° C or more. If the Tg is lower than 90 ° C, the market needs as a light source with large deterioration over time (decrease in brightness and film properties) cannot be satisfied. That is, in order to satisfy both luminance and durability, it is preferable that phosphorescence emission energy is 2.9 eV or more and Tg is 90 ° C. or more. Tg is more preferably 100 ° C or higher.
- a phosphorescent metal complex is a compound in which light emission from an excited triplet is observed, phosphorescent light emission at room temperature (25 ° C), and a phosphorescence quantum yield of 25 ° C.
- the compound is 0.0 1 or more.
- the phosphorescence quantum yield is preferably 0.1 or more.
- the phosphorescence quantum yield can be measured by the method described in Spectra II, page 398 (1992 edition, Maruzen) of 4th edition Experimental Chemistry Course 7.
- the energy transfer type in which light is emitted from the phosphorescent metal complex by transferring this energy to the phosphorescent metal complex, and the other is that the phosphorescent metal complex serves as a carrier trap.
- a carrier trap type in which recombination of carriers occurs on a light-emitting metal complex and light emission of a phosphorescent metal complex power is obtained, but in either case, it is phosphorescent.
- the condition is that the excited state energy of the metal complex is lower than the excited state energy of the host compound.
- the phosphorescent metal complex according to the present invention is exemplified below, but an Ir complex is preferably used, and a 2-phenylimidazole derivative is more preferably used as a ligand. It has Ir complex.
- the phosphorescent maximum wavelength of the phosphorescent organometallic complex is not particularly limited.
- a central metal, a ligand, a substituent of the ligand, etc. The light emission wavelength obtained by selecting can be changed.
- the light emitting layer has a maximum light emission wavelength of 430 ⁇ ! ⁇ 480nm, 510 ⁇ ! ⁇ It includes layers with different emission spectra in the range of 550 nm, 600 nm to 640 nm, or layers in which these are laminated.
- the order of stacking the light emitting layers is not particularly limited, and a non-light emitting intermediate layer may be provided between the light emitting layers.
- a non-light emitting intermediate layer may be provided between the light emitting layers.
- the total thickness of the light emitting layer is not particularly limited, but from the viewpoint of improving the uniformity of the film, emitting light at a low voltage, and improving the stability of the emission color with respect to the drive current, it is usually 2 ⁇ to 5 / ⁇ ⁇
- it is selected in the range of 2 nm to 200 nm. In the present invention, 10 nm to 2
- each light emitting layer is preferably selected in the range of 2 nm to 100 nm, and more preferably in the range of 2 nm to 20 nm. Regarding the relationship of the film thickness of each light emitting layer of blue, green and red
- the blue light emitting layer (the total when there are a plurality of layers) is preferably the thickest.
- a plurality of light-emitting compounds may be mixed in each light-emitting layer within the range in which the maximum wavelength is maintained.
- the blue light emitting layer has a maximum wavelength of 430 ⁇ ! ⁇ 480nm blue light-emitting compound and maximum wavelength 510 ⁇ ! ⁇ 550 nm green light-emitting compound may be mixed and used.
- the hole transport layer is a hole transport material having a function of transporting holes.
- a hole injection layer and an electron blocking layer are also included in the hole transport layer.
- the hole transport layer can be provided as a single layer or a plurality of layers.
- the hole transport material has any of hole injection or transport and electron barrier properties, and may be either organic or inorganic.
- a triazole derivative, an oxadiazole derivative, an imidazole derivative, a polyarylalkane derivative, a virazoline derivative and a pyrazolone derivative, a furendyleneamine derivative, an arylamine derivative, an amino-substituted chalcone derivative, an oxazole derivative, a styrylanthracene derivative examples include fluorenone derivatives, hydrazone derivatives, stilbene derivatives, silazane derivatives, aniline copolymers, and conductive polymer oligomers, particularly thiophene oligomers.
- aromatic tertiary amine compounds and styrylamine compounds include N, N, N ', N'-tetraphenyl-1,4'-daminophenol; N, N' —Diphenyl N, N '— Bis (3-methylphenol) 1 [1, 1' — Biphenyl] 1, 4, 4 '— Diamine (TPD); 2, 2 Bis (4 di-p-tolylaminophenol 1, 1-bis (4 di-l-tri-laminophenol) cyclohexane; N, N, N ', N' —tetra-l-tolyl-1,4,4'-diaminobiphenyl; 1 Bis (4 di-p-triaminophenol) 4 Phenol mouth hexane; Bis (4-dimethylamino 2-methylphenol) phenylmethane; Bis (4-di-p-triaminophenol) phenylmethane; N, N ' —Diphenyl N, N
- 5,061,569 for example, 4,4′bis [N- (1-naphthyl) N phenol-amino] Bifuran (NPD), three triphenylamine units described in JP-A-4 308688 are connected in a starburst type 4, 4 ', A "—Tris [? ⁇ — (3— Methylphenol) N phenolamine] triphenylamine (MTD ATA) and the like.
- a polymer material in which these materials are introduced into a polymer chain or these materials are used as a polymer main chain can also be used.
- Inorganic compounds such as P-type-Si and p-type-SiC can also be used as the hole injection material and hole transport material.
- so-called p-type hole transport as described in JP-A-11-251067 and J. Huang et. Al. (Applied Physics Letters 80 (2002), p. 139). Materials can also be used. In the present invention, it is preferable to use these materials because a light emitting element with higher efficiency can be obtained!
- the hole transport layer is formed by thin-filming the hole transport material by a known method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an inkjet method, or an LB method. Can be formed.
- a vacuum deposition method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an inkjet method, or an LB method.
- a vacuum deposition method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an inkjet method, or an LB method.
- a known method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an inkjet method, or an LB method.
- a vacuum deposition method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an inkjet method, or an LB method.
- LB method
- a hole transport layer having a high p property doped with impurities can be used. Examples thereof include those described in JP-A-4-297076, JP-A-2000-196140, 2001-102175, J. Appl. Phys., 95, 5773 (2004), and the like. It is done.
- the electron transport layer is a material force having a function of transporting electrons, and in a broad sense, an electron injection layer and a hole blocking layer are also included in the electron transport layer.
- An electron transport layer may be provided as a single layer or multiple layers.
- any material can be selected from conventionally known compounds as long as it has a function of transmitting electrons injected from the electrode to the light-emitting layer.
- Examples include fluorene derivatives, diphenylquinone derivatives, thiopyran dioxide oxide derivatives, strength rubodiimides, fluorenylidenemethane derivatives, anthraquinodimethane and anthrone derivatives, oxadiazole derivatives, and the like.
- thiadiazole derivatives in which the oxygen atom of the oxaziazole ring is substituted with a sulfur atom, and quinoxaline derivatives having a quinoxaline ring known as an electron-withdrawing group can also be used as the electron transporting material. Furthermore, these materials are introduced into polymer chains. Alternatively, a polymer material having these materials as the main chain of the polymer can also be used.
- metal complexes of 8 quinolinol derivatives such as tris (8 quinolinol) aluminum (Alq), tris (5,7-dichloro-1-8-quinolinol) aluminum, tris (5,7-dive mouth) 8 quinolinol) aluminum, tris (2methyl 8quinolinol) aluminum, tris (5-methyl 8-quinolinol) aluminum, bis (8-quinolinol) zinc (Znq), etc.
- the central metals of these metal complexes are In, Mg, Metal complexes replacing Cu, Ca, Sn, Ga or Pb can also be used as electron transport materials.
- metal free or metal phthalocyanine, or those having terminal ends substituted with an alkyl group or a sulfonic acid group can be preferably used as the electron transporting material.
- the distyrylvirazine derivative exemplified as the material for the light-emitting layer can also be used as an electron transport material, and, like the hole injection layer and the hole transport layer, inorganic semiconductors such as n-type Si and n-type SiC Can also be used as an electron transporting material.
- the electron transport layer is obtained by thin-filming the electron transport material by a known method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an ink jet method, or an LB method. Can be formed.
- the film thickness of the electron transport layer is not particularly limited, but is usually about 5 nm to 5 ⁇ m, preferably 5 ⁇ ! ⁇ 200nm.
- the electron transport layer may have a single layer structure that can be one or more of the above materials.
- an electron transport layer having a high n property doped with impurities can be used. Examples thereof are described in JP-A-4-297076, JP-A-10-270172, JP-A-2000-196140, 2001-102175, Appl. Phys., 95, 5773 (2004), etc. The thing which was done is mentioned.
- the support substrate (hereinafter also referred to as a substrate, substrate, substrate, support, etc.) that can be used in the organic EL device of the present invention, there is no particular limitation on the type of glass, plastic, etc., and it is transparent. Or opaque. When taking out the supporting substrate side force light, the supporting substrate is preferably transparent.
- a transparent support substrate preferably used, glass , Quartz, and transparent resin film.
- a particularly preferable support substrate is a resin film capable of giving flexibility to the organic EL element.
- polyesters such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyethylene, polypropylene, cellophane, cellose diacetate, sanolose triacetate, sanolose acetate butyrate, and senore mouth.
- Cellulose esters such as Sacetate Propionate (CAP), Cellulose Acetate Phthalate (TAC), Cellulose Nitrate or their derivatives, Polysalt vinylidene, Polybulal alcohol, Polyethylenebutal alcohol, Syndiotactic polystyrene , Polycarbonate, norbornene resin, polymethylpentene, polyether ketone, polyimide, polyethersulfone (PES), polyphenylene sulfide, polysulfones, polyether Luimide, Polyetherketoneimide, Polyamide, Fluororesin, Nylon, Polymethylmethacrylate, Acrylic or Polyarylates, Arton (trade name, manufactured by JSR) or Abel (trade name, manufactured by Mitsui Chemicals), Tatsuta cycloolefin Examples include greaves.
- an inorganic film, an organic film, or a noble film of both may be formed on the surface of the resin film.
- Water vapor permeability measured by a method in accordance with JIS K 7129-1992 (25 ⁇ 0.5 ° C, relative humidity (90 ⁇ 2)% RH) is preferably a rare film with 0.01 gZ (m 2 '24h) or less, and JIS K 7126-1987 Is a high barrier film with an oxygen permeability measured by a method conforming to the following standards: l X 10 _3 mlZ (m 2 '24h'MPa) or less, and water vapor permeability of 10 _5 gZ (m 2 ' 24h) or less.
- any material may be used as long as it has a function of suppressing entry of elements that cause deterioration of elements such as moisture and oxygen.
- silicon oxide, silicon dioxide, silicon nitride, or the like may be used. it can.
- the method for forming the barrier film is not particularly limited, for example, vacuum deposition, sputtering, reactive sputtering, molecular beam epitaxy, cluster ion beam method, Force capable of using ion plating method, plasma polymerization method, atmospheric pressure plasma polymerization method, plasma CVD method, laser CVD method, thermal CVD method, coating method, etc.
- a method based on an atmospheric pressure plasma polymerization method is particularly preferred.
- Examples of the opaque support substrate include metal plates such as aluminum and stainless steel, non-transparent resin substrates, ceramic substrates, and the like.
- the external extraction efficiency at room temperature of light emission of the organic EL device of the present invention is preferably 1% or more, more preferably 5% or more.
- the external extraction quantum efficiency (%) the number of photons emitted to the outside of the organic EL element.
- a hue improvement filter such as a color filter may be used in combination, or a color conversion filter that converts light emitted from an organic EL element into multiple colors using a phosphor may be used in combination.
- the ⁇ max of light emission of the organic EL element is preferably 480 nm or less.
- sealing means used in the present invention include a method of bonding a sealing member, an electrode, and a support substrate with an adhesive.
- the sealing member may be a concave plate shape or a flat plate shape as long as it is disposed so as to cover the display region of the organic EL element. Further, transparency and electrical insulation are not particularly limited.
- Specific examples include a glass plate, a polymer plate 'film, a metal plate' film, and the like.
- the glass plate include soda-lime glass, norlium strontium-containing glass, lead glass, aluminosilicate glass, borosilicate glass, norium borosilicate glass, and quartz.
- the polymer plate include polycarbonate, acrylic, polyethylene terephthalate, polyether sulfide, and polysulfone.
- the metal plate include stainless steel, iron, copper, aluminum, magnesium, nickel, zinc, chromium, titanium, molybdenum, silicon, germanium, and tantalum power, and one or more metal or alloy power selected. .
- a polymer film and a metal film can be preferably used because the device can be formed into a thin film.
- the polymer film is JIS K 7126-19 Oxygen permeability measured by a method according to 87 1 X 10 _3 mlZ (m 2 '24h'MPa) or less Water vapor permeability (25 ⁇ 0) measured by a method according to JIS K 7129-1992 . 5 ° C, relative humidity (90 ⁇ 2)% RH) is 10 _5 gZ (m 2 - 24h ) is not preferable is as follows.
- Processing the sealing member into a concave shape is performed by sandblasting, chemical etching, or the like.
- adhesives include photocuring and thermosetting adhesives having a reactive bur group of acrylic acid oligomers and methacrylic acid oligomers, and moisture curing adhesives such as 2-cyanoacrylates. Can be mentioned.
- heat- and chemical-curing type such as epoxy type can be mentioned.
- hot-melt type polyamide, polyester, and polyolefin can be mentioned.
- a cationic curing type ultraviolet curing epoxy resin adhesive can be mentioned.
- the adhesive can be hardened up to a room temperature force of 80 ° C. Further, a desiccant may be dispersed in the adhesive. A commercially available dispenser may be used to apply the adhesive to the sealing part, or it may be printed like screen printing!
- the electrode and the organic layer may be coated on the outside of the electrode facing the support substrate with the organic layer interposed therebetween, and an inorganic or organic layer may be formed in contact with the support substrate to form a sealing film.
- the material for forming the film may be any material as long as it has a function of suppressing intrusion of elements that cause deterioration of elements such as moisture and oxygen.
- silicon oxide, silicon dioxide, silicon nitride, etc. can be used.
- the method for forming these films is not particularly limited, for example, vacuum deposition method, sputtering method, reactive sputtering method, molecular beam epitaxy method, cluster ion beam method, ion plating method, plasma polymerization method, atmospheric pressure plasma polymerization method.
- Plasma CVD method, laser C VD method, thermal CVD method, coating method, etc. can be used.
- an inert gas such as nitrogen or argon, or an inert liquid such as fluorinated hydrocarbon or silicon oil is used in the gas phase or liquid phase. Injection It is preferable to do. A vacuum is also possible. It is also possible to seal hygroscopic compounds inside.
- Hygroscopic compounds include, for example, metal oxides (for example, acid sodium, acid potassium, acid calcium, barium oxide, magnesium oxide, acid aluminum, etc.), sulfate (For example, sodium sulfate, calcium sulfate, magnesium sulfate, cobalt sulfate, etc.), metal halides (for example, calcium chloride, magnesium chloride, cesium fluoride, tantalum fluoride, cerium bromide, magnesium bromide, nordium iodide) , Magnesium iodide, etc.), perchloric acids (for example, barium perchlorate, magnesium perchlorate, etc.) and the like, and sulfates, metal halides and perchloric acids are preferably anhydrous salts. Used.
- metal oxides for example, acid sodium, acid potassium, acid calcium, barium oxide, magnesium oxide, acid aluminum, etc.
- sulfate for example, sodium sulfate, calcium sulfate,
- a protective film or a protective plate may be provided outside the sealing film or the sealing film on the side facing the support substrate with the organic layer interposed therebetween.
- the mechanical strength is not necessarily high. Therefore, it is preferable to provide such a protective film and a protective plate.
- a material that can be used for this the same glass plate, polymer plate 'film, metal plate' film, etc. that are used for the sealing can be used. It is preferable to use a polymer film.
- the organic EL element emits light inside the layer with a refractive index higher than that of air (refractive index is about 1.7 to 2.1), and only about 15% to 20% of the light generated in the light emitting layer can be extracted. It is generally said that there is nothing. This is because light incident on the interface (transparent substrate-air interface) at an angle ⁇ greater than the critical angle causes total reflection and cannot be extracted outside the device. This is because light undergoes total reflection with the substrate, the light is a transparent electrode, and is guided through the light emitting layer. As a result, the light escapes in the direction of the element side surface.
- a technique for improving the light extraction efficiency for example, a method of forming irregularities on the surface of the transparent substrate to prevent total reflection at the interface between the transparent substrate and the air (US Pat. No. 4,774,435) ), A method for improving the efficiency by giving the substrate a light collecting property (Japanese Patent Laid-Open No. 63-314795), a method of forming a reflective surface on the side surface of the element (Japanese Patent Laid-Open No. 1-2220394) A method of forming an antireflection film by introducing a flat layer having an intermediate refractive index between the substrate and the light emitter (Japanese Patent Laid-Open No. Sho 62-172691), between the substrate and the light emitter.
- Japanese Patent Laid-Open No. 2001-202827 Japanese Patent Laid-Open No. 2001-202827
- a method of forming a diffraction grating between the substrate, the transparent electrode layer and the light emitting layer (including between the substrate and the outside world) Japanese Patent Publication No. 11-283751.
- these methods can be used in combination with the organic EL device of the present invention.
- a method of introducing a flat layer having a lower refractive index than the substrate between the substrate and the light emitter can be suitably used.
- a method of forming a diffraction grating between any one of the substrate, the transparent electrode layer and the light emitting layer (including between the substrate and the outside) can be suitably used.
- the present invention can obtain an element having further higher luminance or durability.
- the low refractive index layer examples include air-mouthed gel, porous silica, magnesium fluoride, and fluorine-based polymer. Since the refractive index of the transparent substrate is generally about 1.5 to 1.7, the low refractive index layer preferably has a refractive index of about 1.5 or less. Further, it is preferably 1.35 or less.
- the thickness of the low refractive index medium is preferably at least twice the wavelength in the medium. This is because the effect of the low refractive index layer is diminished when the thickness of the low refractive index medium is about the wavelength of light and the electromagnetic wave exuded by evanescent enters the substrate.
- the method of introducing a diffraction grating into an interface or any medium that causes total reflection is characterized by a high effect of improving light extraction efficiency.
- This method is generated from the light emitting layer by utilizing the property that the diffraction grating can change the direction of light to a specific direction different from refraction by so-called Bragg diffraction such as first-order diffraction and second-order diffraction.
- Light that cannot be emitted outside due to total internal reflection between layers, etc. is diffracted by introducing a diffraction grating into any layer or medium (in a transparent substrate or transparent electrode). Is going to be taken out.
- the diffraction grating to be introduced preferably has a two-dimensional periodic refractive index. This is because light emitted from the light-emitting layer is randomly generated in all directions, so in a general one-dimensional diffraction grating having a periodic refractive index distribution only in a certain direction, only light traveling in a specific direction can be obtained. It is not diffracted and the light extraction efficiency does not increase so much. However, by making the refractive index distribution a two-dimensional distribution, light traveling in all directions is diffracted, and the light extraction efficiency increases.
- the position where the diffraction grating is introduced may be in any of the layers or in the medium (in the transparent substrate or transparent electrode), but is preferably in the vicinity of the organic light emitting layer where light is generated. .
- the period of the diffraction grating is preferably about 1Z2 to about 3 times the wavelength of light in the medium.
- the arrangement of the diffraction grating is preferably two-dimensionally repeated, such as a square lattice, a triangular lattice, or a honeycomb lattice.
- the organic EL device of the present invention can be processed on a light extraction side of a substrate, for example, by providing a microlens array-like structure, or combined with a so-called condensing sheet, in a specific direction, for example, on the device light emitting surface.
- a specific direction for example, on the device light emitting surface.
- the brightness in a specific direction can be increased.
- a quadrangular pyramid with a side of 30 ⁇ m and an apex angle of 90 degrees is arranged in two dimensions on the light extraction side of the substrate.
- One side is 10 / z m ⁇ : LOO / z m is preferred. If it is smaller than this, the effect of diffraction is generated, and if the color is too large, the thickness becomes thick, which is not preferable.
- the light condensing sheet for example, a sheet that has been put to practical use in an LED backlight of a liquid crystal display device can be used.
- a brightness enhancement film (BEF) manufactured by Sumitomo 3EM may be used.
- the shape of the prism sheet for example, the base material may be formed with stripes having a vertex angle of 90 degrees and a pitch of 50 111, a shape with rounded vertex angles, and a random pitch. It may be a changed shape or other shapes.
- the light diffusing plate 'film is attached to the condensing sheet. May be used in combination with For example, a diffusion film (light-up) manufactured by Kimoto Co., Ltd. can be used.
- a desired electrode material for example, a thin film having a material force for an anode is 1 ⁇ m or less, preferably ⁇ !
- An anode is formed by a method such as vapor deposition or sputtering so that a film thickness of ⁇ 200 nm is obtained.
- a method for forming each of these layers there are a vapor deposition method, a wet process (spin coating method, casting method, ink jet method, printing method) and the like as described above.
- film formation by a coating method such as a spin coating method, an ink jet method, or a printing method is preferable, and an inkjet method is particularly preferable.
- a light-emitting layer by a coating method using a solution in which the organometallic complex according to the present invention is dissolved or dispersed. I prefer to be! /.
- the liquid medium for dissolving or dispersing the organometallic complex according to the present invention includes, for example, ketones such as methyl ethyl ketone and cyclohexanone, fatty acid esters such as ethyl acetate, and halogenated carbonization such as dichlorobenzene.
- Organic solvents such as hydrogen, DMF and DMSO can be used.
- a dispersion method it can disperse
- a thin film that also has a material force for the cathode is formed thereon by 1 ⁇ m or less, preferably by a method such as vapor deposition or sputtering so that the film thickness is in the range of 50 nm to 200 nm.
- the production order is reversed, and the cathode, the electron injection layer, the electron transport layer, the light emitting layer, the hole transport layer, It is also possible to produce the hole injection layer and the anode in this order.
- the voltage is positive with the anode as + and the cathode as one polarity.
- Luminescence can be observed when 2V to 40V is applied.
- An alternating voltage may be applied.
- the AC waveform to be applied may be arbitrary.
- the organic EL element of the present invention can be used as a display device, a display, and various light sources.
- light sources include home lighting, interior lighting, back lights for watches and liquid crystals, billboard advertisements, traffic lights, light sources for optical storage media, light sources for electrophotographic copying machines, light sources for optical communication processors, light sources for optical sensors. Although it is not limited to this, it can be effectively used particularly as a knock light of a liquid crystal display device or a light source for illumination.
- patterning may be performed by a metal mask, an ink jet printing method, or the like as needed during film formation.
- a metal mask an ink jet printing method, or the like as needed during film formation.
- patterning only the electrode may be patterned, the electrode and the light emitting layer may be patterned, or the entire element layer may be patterned!
- ITO substrate 100 mm X 100 mm X I. 1 mm thick ITO (indium tin oxide) filmed on lOOnm substrate ( ⁇ Techno Glass Co., Ltd. ⁇ 45)
- the transparent support substrate was ultrasonically cleaned with isopropyl alcohol, dried with dry nitrogen gas, and subjected to UV ozone cleaning for 5 minutes.
- This transparent support substrate is fixed to a substrate holder of a commercially available vacuum evaporation system, while 200 mg of ⁇ NPD is put in a molybdenum resistance heating boat, and 200 mg of CBP as a host compound is put in another molybdenum resistance heating boat.
- the heating boat containing CBP and Ir-12 was energized and heated, and co-deposited on the hole transport layer at a deposition rate of 0.2 nmZ seconds and 0.012 nm / second, respectively.
- a 40 nm light emitting layer was provided.
- the substrate temperature at the time of vapor deposition was room temperature.
- the heating boat containing BCP was energized and heated, and deposited on the light emitting layer at a deposition rate of 0. InmZ seconds to provide a hole blocking layer having a thickness of lOnm.
- the heating boat containing Alq was further energized and heated, and the deposition rate was 0.1 nm.
- Evaporation was performed on the hole blocking layer in Z seconds, and an electron transport layer having a thickness of 40 nm was further provided.
- the substrate temperature at the time of vapor deposition was room temperature.
- the organic EL device of the present invention is excellent in external extraction quantum efficiency and has a long lifetime.
- PEDOTZPSS Poly (3,4-ethylenedioxythiophene) -polystyrene sulfonate (manufactured by Bayer)
- the film was deposited on the hole blocking layer in seconds, and an electron transport layer having a thickness of 40 nm was further provided.
- the substrate temperature during vapor deposition was room temperature.
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Abstract
Description
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JP2007552930A JP5181676B2 (ja) | 2006-01-05 | 2006-12-26 | 有機エレクトロルミネッセンス素子、表示装置及び照明装置 |
EP06843241.8A EP1970976B1 (en) | 2006-01-05 | 2006-12-26 | Organic electroluminescent device, display and illuminating device |
US13/609,296 USRE44831E1 (en) | 2006-01-05 | 2006-12-26 | Organic electroluminescent device, display, and illuminating device |
US12/159,963 US7935434B2 (en) | 2006-01-05 | 2006-12-26 | Organic electroluminescent device, display, and illuminating device |
US13/072,025 US8221908B2 (en) | 2006-01-05 | 2011-03-25 | Organic electroluminescent device, display, and illuminating device |
US13/626,186 USRE45216E1 (en) | 2006-01-05 | 2012-09-25 | Organic electroluminescent device, display, and illuminating device |
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US13/072,025 Division US8221908B2 (en) | 2006-01-05 | 2011-03-25 | Organic electroluminescent device, display, and illuminating device |
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WO (1) | WO2007077810A1 (ja) |
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US20090096360A1 (en) | 2009-04-16 |
US20110168990A1 (en) | 2011-07-14 |
EP2463930A2 (en) | 2012-06-13 |
JP5181676B2 (ja) | 2013-04-10 |
JP2012231146A (ja) | 2012-11-22 |
EP1970976B1 (en) | 2017-07-19 |
USRE45216E1 (en) | 2014-10-28 |
JP2014042071A (ja) | 2014-03-06 |
EP1970976A4 (en) | 2010-07-14 |
EP2463930A3 (en) | 2012-08-08 |
US7935434B2 (en) | 2011-05-03 |
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USRE44831E1 (en) | 2014-04-08 |
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US8221908B2 (en) | 2012-07-17 |
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