WO2006021982A1 - 発光素子用材料および発光素子 - Google Patents
発光素子用材料および発光素子 Download PDFInfo
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- WO2006021982A1 WO2006021982A1 PCT/JP2004/012054 JP2004012054W WO2006021982A1 WO 2006021982 A1 WO2006021982 A1 WO 2006021982A1 JP 2004012054 W JP2004012054 W JP 2004012054W WO 2006021982 A1 WO2006021982 A1 WO 2006021982A1
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- Prior art keywords
- light emitting
- group
- emitting device
- derivatives
- light
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- 239000000463 material Substances 0.000 title claims abstract description 128
- 239000000126 substance Substances 0.000 claims abstract description 31
- 229910052757 nitrogen Chemical group 0.000 claims abstract description 15
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- 125000001424 substituent group Chemical group 0.000 claims abstract description 8
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- 239000010410 layer Substances 0.000 claims description 37
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- 229920001490 poly(butyl methacrylate) polymer 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
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 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
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- 229920005749 polyurethane resin Polymers 0.000 description 1
- 150000004033 porphyrin derivatives Chemical class 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000003216 pyrazines Chemical class 0.000 description 1
- 150000003219 pyrazolines Chemical class 0.000 description 1
- 229910052611 pyroxene Inorganic materials 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 125000002294 quinazolinyl group Chemical class N1=C(N=CC2=CC=CC=C12)* 0.000 description 1
- 229910052705 radium Inorganic materials 0.000 description 1
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-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
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical class [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
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- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 125000005760 substituted naphthylene group Chemical group 0.000 description 1
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- UGNWTBMOAKPKBL-UHFFFAOYSA-N tetrachloro-1,4-benzoquinone Chemical compound ClC1=C(Cl)C(=O)C(Cl)=C(Cl)C1=O UGNWTBMOAKPKBL-UHFFFAOYSA-N 0.000 description 1
- NQRYJNQNLNOLGT-UHFFFAOYSA-N tetrahydropyridine hydrochloride Natural products C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 1
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 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
- 150000007979 thiazole derivatives Chemical class 0.000 description 1
- 229930192474 thiophene Natural products 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
- 125000003944 tolyl group Chemical group 0.000 description 1
- PWYVVBKROXXHEB-UHFFFAOYSA-M trimethyl-[3-(1-methyl-2,3,4,5-tetraphenylsilol-1-yl)propyl]azanium;iodide Chemical compound [I-].C[N+](C)(C)CCC[Si]1(C)C(C=2C=CC=CC=2)=C(C=2C=CC=CC=2)C(C=2C=CC=CC=2)=C1C1=CC=CC=C1 PWYVVBKROXXHEB-UHFFFAOYSA-M 0.000 description 1
- 125000005580 triphenylene group Chemical group 0.000 description 1
- AKQNYQDSIDKVJZ-UHFFFAOYSA-N triphenylsilane Chemical class C1=CC=CC=C1[SiH](C=1C=CC=CC=1)C1=CC=CC=C1 AKQNYQDSIDKVJZ-UHFFFAOYSA-N 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
- YKSGNOMLAIJTLT-UHFFFAOYSA-N violanthrone Chemical class C12=C3C4=CC=C2C2=CC=CC=C2C(=O)C1=CC=C3C1=CC=C2C(=O)C3=CC=CC=C3C3=CC=C4C1=C32 YKSGNOMLAIJTLT-UHFFFAOYSA-N 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- 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
- H10K85/649—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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1007—Non-condensed systems
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1011—Condensed systems
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
-
- 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
- Light emitting device material and light emitting device are Light emitting device material and light emitting device
- the present invention relates to a light emitting device material and a light emitting device using the same, including a display device, a flat panel display, a knock light, illumination, an interior, a sign, a signboard, an electrophotographic machine, and an optical signal generator
- the present invention relates to a light-emitting element that can be used in such fields.
- Patent Document 1 JP-A-5-331459 (Claims)
- Patent Document 2 JP 2000-119644 A (page 17)
- Patent Document 3 International Publication No. 00/03565 Pamphlet (Claims)
- Patent Document 4 Japanese Patent Laid-Open No. 2003-115387 (Claims)
- Patent Document 5 Japanese Patent Application Laid-Open No. 2003-123983 (Claims)
- An object of the present invention is to provide a light-emitting element that solves the problems of the related art and has a low driving voltage and excellent durability.
- R 1 —R 6 are each selected from the same or different hydrogen, alkyl group, and aryl group.
- A is an n-valent aromatic hydrocarbon group.
- B Is an alkyl group or an aryl group, X is carbon or nitrogen, n is a natural number of 2 or more and 6 or less, and each of the substituents having n phenantolin skeletons or benzoquinoline skeletons, respectively. Identical or different.
- the present invention also relates to an element in which an organic layer exists between an anode and a cathode and emits light by electric energy, and the organic layer includes a light emitting element material represented by the general formula (1) It is.
- n is a natural number of 2 or more and 6 or less.
- the groups having n phenantorin skeletons or benzoquinoline skeletons may be the same or different.
- the above n is more preferably 2 from the viewpoint that synthesis and purification can be easily performed in view of the balance between sublimation property during vacuum deposition and thin film forming ability.
- a in the general formula (1) is a substituted or unsubstituted phenylene group, or a substituted or unsubstituted group. Preferably it is a substituted naphthylene group.
- a ′ is selected from 1,3-phenylene group, 1,4-phenylene group, 1,4-naphthylene group, 1,5-naphthylene group, and 2,7-naphthylene group.
- B ′ is at least one selected from the group consisting of a methinore group, a t-butyl group, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted naphthyl group.
- the light emitting device material include the following structures, but are not particularly limited.
- the light emitting device material represented by the general formula (1) can be synthesized by the following method, but is not particularly limited.
- a reactive substituent is introduced into a compound corresponding to A in the general formula (1), and then a phenol of the general formula (1) is used.
- a method is preferred in which a compound in which B in the general formula (1) is hydrogen is obtained by conversion to an oral phosphorus skeleton or a benzoquinoline skeleton, and then B is introduced.
- examples of the reactive substituent include, but are not particularly limited to, a acetyl group, an iodine group, a bromo group, and the like.
- the compound corresponding to A in the general formula (1) is reacted with acetyl and aluminum chloride in 1,2-dichloroethane at 50 ° C and treated in a conventional manner to introduce the acetyl group. Can do.
- acetyl chloride and aluminum chloride 1 1 4-substitution can be obtained.
- a method of converting a trifluoromethanesulfonyloxy group into a acetyl group with a palladium catalyst can be used.
- References include page 1481 of J. Org. Chem. Vol. 57 (1992).
- a compound corresponding to A in the general formula (1) having a trifluoromethanesulfonyloxy group is reacted with butyl vinyl ether in dimethylformamide and triethylamine at 50 to 120 ° C in a palladium catalyst.
- the acetyl group can be introduced by treating with a conventional method.
- an acetyl group can also be introduced by using a bromo group or a odo group instead of the trifluoromethanesulfonyloxy group.
- Amino- 7_quinolinecarbohydrate or 1-amino-2_naphthalenecarbaldehyde is reacted with conventional methods, or the odo or bromo form of the compound corresponding to A in formula (1) is toluene, _100 ° C in a solvent such as THF lithiated with metal lithium, alkyllithium such as t-butyllithium, n-butyllithium, etc.
- alkyl lithium and aryl lithium can be obtained by reacting the corresponding alkyl halide, alkyl lithium such as metal lithium or n-butyl lithium with the halogenated aryl.
- Alkyl magnesium halide and aryl magnesium halide can be obtained by reacting metal magnesium with the corresponding alkyl halide and aryl halide.
- the light emitting device material of the general formula (1) is purified by column chromatography, recrystallization, sublimation, etc. It can be purified by methods alone or in combination. In column chromatography, it can be purified using silica gel, alumina, Floridinole or the like as a filler.
- the present invention is a light emitting device including the light emitting device material represented by the general formula (1).
- the light-emitting device of the present invention includes at least an anode and a cathode, and an organic layer interposed between the anode and the cathode.
- the resistance of the electrode is not limited as long as it can supply a current sufficient for light emission of the light-emitting element, but is preferably low from the viewpoint of power consumption of the light-emitting element.
- I below 300 ⁇ Higuchi A TO substrate functions as a device electrode, but since it is now possible to supply a substrate of about 10 ⁇ / port, it is particularly desirable to use a low-resistance product of 100 ⁇ / port or less. Yes.
- the thickness of ITO can be selected arbitrarily according to the resistance value. Usually, it is used between 100 and 300 nm.
- the IT ⁇ film formation method is not particularly limited, such as electron beam method, sputtering method and chemical reaction method.
- the method for producing these electrodes is not particularly limited as long as conduction can be achieved, such as resistance heating, electron beam, sputtering, ion plating, and coating.
- Examples of the configuration of the organic layer include, in addition to the configuration composed of only the light emitting layer, 1) a hole transport layer / light emitting layer / electron transport layer, and 2) a stacked configuration such as a light emitting layer / electron transport layer. It is done.
- Each of the above layers may be composed of a single layer or a plurality of layers.
- the layers in contact with the electrodes may be referred to as the hole injection layer and the electron injection layer, respectively.
- the hole injection layer is the hole transport layer.
- the electron injection layer is included in the electron transport layer.
- the hole transport layer is formed by laminating or mixing one or more hole transport materials or a mixture of a hole transport material and a polymer binder. Further, an inorganic salt such as iron chloride ( ⁇ ) may be added to the hole transport material to form a layer.
- an inorganic salt such as iron chloride ( ⁇ ) may be added to the hole transport material to form a layer.
- hole transport materials examples include 4,4, -bis (N- (3_methylphenyl) -N-phenylamino) biphenyl, 4,4, -bis (N- (l-naphthyl) -N Triphenylamine derivatives such as —phenylamino) biphenyl, 4, 4 ,, 4 ”-tris (3-methylphenyl (phenyl) amino) triphenylamine, bis (N_ carbylcarbazole) or bis (N-alkylcarba In bisole rubazole derivatives such as Zonole), indole derivatives, pyrazoline derivatives, stilbene compounds, hydrazone compounds, benzofuran derivatives, thiophene derivatives, oxadiazole derivatives, phthalocyanine derivatives, porphyrin derivatives, etc.
- the compound is not particularly limited as long as it is a compound capable of forming a thin film necessary for manufacturing a light emitting device, injecting holes from the anode, and further transporting holes.
- Dopa If the amount of the dopant material is too large, a concentration quenching phenomenon occurs. Therefore, it is preferable to use it at 20 wt% or less with respect to the host material, and more preferably at 10 wt% or less. As a doping method of the dopant material, it is possible to use a co-evaporation method with the host material.
- the blue-blue green dopant material includes aromatics such as naphthalene, anthracene, phenanthrene, pyrene, triphenylene, perylene, fluorene, and indene.
- Aromatic heterocyclic compounds and their derivatives such as phosphorus, pyrazine, naphthyridine, quinoxaline, pyroxene pyridine, thixanthene, and imidazopyridine, distyrylbenzene derivatives, tetraphenylbutadiene derivatives, stilbene derivatives, aldazine derivatives, coumarin derivatives , Imidazole, thiazole, thiadiazole, carbazole, oxazole, oxadiazole, triazole and other metal derivatives and their metal complexes and N, N, -diphenyl
- green-yellow dopant materials include coumarin derivatives, phthalimide derivatives, naphthalimide derivatives, perinone derivatives, pyrrolopyrrole derivatives, cyclopentagen derivatives, attaridone derivatives, quinacridone derivatives, pyrrolopyrrole derivatives, pyromethene derivatives, and the like.
- naphthacene derivatives such as noreprene, and the compounds exemplified as the above blue-blue green dopant materials further include substituents capable of increasing the wavelength, such as aryl, heteroaryl, arylylbulu, amino, and cyano groups.
- the introduced compound is also a suitable example.
- naphthalimide derivatives such as bis (diisopropylphenyl) perylenetetracarboxylic imide, perinone derivatives, acetylylacetone, benzoylacetone and phenanthrene are used as ligands.
- the host material used in the present invention is not particularly limited, but is a condensed ring derivative such as anthracene pyrene, which has been known as a light emitter for a long time, tris (8-quinolinolato) aluminum (III ) And other metal chelate oxinoid compounds, bisstyryl derivatives such as bisstyrylanthracene derivatives and distyrylbenzene derivatives, tetraphenylbutadiene derivatives, coumarin derivatives, oxadiazole derivatives, pyropyridine derivatives, perinone derivatives, cyclopentane derivatives
- polyphenylene vinylene derivatives, polyparaphenylene derivatives, and polythiophene derivatives are preferably used for oxadiazol derivatives, thiadiazolopyridine derivatives, pyrrolopyrrole derivatives, and polymer systems.
- the host material of the light emitting layer that exhibits phosphorescence emission is not particularly limited.
- Force S 4, 4 '-bis (force rubazolirou N-inole) biphenyl N, N, one diphenone 1,3'-biscarbazole and other force rubazole derivatives, N, N'-diphenyl , N'—Di (3-methylphenyl) — 4, 4′—Diphenyl, 1, 1′—Diamine, N, ⁇ ′—Dinaphthyl N, ⁇ ′—Diphenyl—4, 4, —Diphenyl— 1, 1,-Diamine and other triphenylamine derivatives, indole derivatives, triazoleol, oxaziazole, imidazole and other azole derivatives, phenantorin derivatives, quinoline derivatives, quinoxaline derivatives, naphthyridine derivatives, bipyridine and terpyridine Examples thereof include oligopyridine derivatives
- the electron transport layer is a layer that administers electrons injected from the cathode and further transports electrons, and efficiently transports the injected electrons with high electron injection efficiency. desirable.
- the electron affinity is large, the electron mobility is large, and the stability is high, and the impurities that become traps are not easily generated during production and use.
- the electron transport layer has a role of a hole blocking layer that can efficiently block the movement of holes.
- the material for a light emitting device of the present invention is more preferable.
- the materials used for the hole transport layer, the light-emitting layer, and the electron transport layer can be formed by laminating and mixing two or more kinds of substances, and each layer can be formed.
- curable resins such as epoxy resin and silicone resin It is also possible to use by distributed.
- the polymer binder is used to form a thermally stable thin film. In this case, it is preferable to use a
- the method for forming the organic layer in the light-emitting device of the present invention is not particularly limited, such as resistance heating vapor deposition, electron beam vapor deposition, sputtering, molecular lamination, and coating. Usually, resistance heating vapor deposition or electron beam vapor deposition is preferable in terms of characteristics.
- the thickness of the layer depends on the resistance value of the organic layer and cannot be limited, but is preferably between 1 and lOOOnm.
- the electric energy mainly refers to a direct current, but a pulse current or an alternating current can also be used.
- the current value and voltage value are not particularly limited, but the maximum brightness should be obtained with the lowest possible energy considering the power consumption and lifetime of the device.
- the light emitting element of the present invention is suitably used as a matrix type light emitting element.
- the matrix type refers to a light emitting element in which pixels for display are arranged in a grid pattern, and displays a character or an image by a set of pixels. Pixel shape and size depend on application
- the matrix driving method can be either the fine jet driving method or the active matrix.
- the line-sequential drive has the advantage that the structure is simple. However, considering the operating characteristics, the active matrix may be superior, so it is preferable to use it depending on the application.
- the light emitting device of the present invention is also suitably used as a segment type light emitting device.
- the segment type is a light emitting element that forms a pattern so as to display predetermined information and emits light in a predetermined region. Examples include time and temperature displays on digital clocks and thermometers, operating status displays for audio equipment and electromagnetic cookers, and panel displays for automobiles.
- the matrix display and the segment display may coexist in the same panel.
- the light-emitting device of the present invention is also suitably used as a backlight.
- the backlight is used mainly for the purpose of 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 board, a sign, and the like.
- liquid crystal display devices especially for PC backlights where thinning is an issue, it is difficult to reduce the thickness of conventional backlights because they are made of fluorescent lamps and light guide plates.
- the backlight according to the invention is characterized by being thin and light.
- the E-20 is, under pressure of 1. 0 X 10- 3 Pa using an oil diffusion pump, a force was also used in the light emitting element after sublimation purification at about 320 ° C.
- the purity of E-20 after sublimation purification was measured using HPLC (C8 column, eluent: 0.1% phosphoric acid aqueous solution Z-acetonitrile). As a result, the HPLC purity (area% at a measurement wavelength of 254 nm) was 99.9%. In the following examples, HPLC purity was measured by the same method.
- This E-9 was used for a light emitting device after sublimation purification as in Example 1.
- the HPLC purity (area% at a measurement wavelength of 254 nm) after sublimation purification was 99.8%.
- 2,7-dihydroxynaphthalene 54 ⁇ Og was dissolved in dichloromethane 680 ml pyridine 136 ml, and trifluoromethanesulfonic anhydride (manufactured by Tokyo Chemical Industry Co., Ltd.) 228 g was added dropwise at 0 ° C. The mixture was reacted at 5 ° C for 2 hours and then at room temperature for 1 day, and then treated in a conventional manner to obtain 143 g of 2,7_bis (trifluoromethanesulfonyloxy) naphthalene.
- This 2,7-di (1,10-phenanthrene 2_yl) naphthalene 5.48 g in 200 ml of toluene in 2 ml of phenyl (2.0 M cyclohexane Z ether solution) at room temperature The reaction was carried out for 2 days and treated in a conventional manner. The obtained product was reacted with 100 g of manganese dioxide in 400 ml of dichloromethane at room temperature for 2.5 hours and treated in a conventional manner to obtain 0.93 g of E-57.
- This E-57 was used in a light emitting device after sublimation purification as in Example 1.
- HPLC purity after purification by sublimation was 99.8%.
- This E-25 was used in a light emitting device after sublimation purification as in Example 1.
- HPLC purity after purification by sublimation (area% at a measurement wavelength of 254 nm) is 99.9. / 0 .
- This E-23 was used for a light emitting device after sublimation purification as in Example 1.
- HPLC purity after purification by sublimation was 99.8%.
- This E-21 was used in a light emitting device after sublimation purification as in Example 1.
- HPLC purity after purification by sublimation was 99.8%.
- This E-33 was used for a light emitting device after sublimation purification as in Example 1.
- HPLC purity after purification by sublimation was 99.8%.
- This E-4 was used in a light emitting device after sublimation purification as in Example:!.
- the HPLC purity (area% at a measurement wavelength of 254 nm) after sublimation purification was 99.9%.
- This E-8 was used in the light emitting device after sublimation purification as in Example 1.
- the HPLC purity (area% at a measurement wavelength of 254 nm) after sublimation purification was 99.9%.
- 1,3-Di (1,10-phenanthrene 2-yl) benzene 5 ⁇ Og was reacted with methyllithium (2.2 M ether solution) 17.3 ml in 120 ml of toluene under ice-cooling for 5 hours, Processed in the usual way.
- the obtained product was reacted with 70 g of manganese dioxide at room temperature for 2 hours in 500 ml of dichloromethane and treated in a conventional manner to obtain 4.25 g of E-17.
- HPLC purity after purification by sublimation was 99.8%.
- An ITO substrate was prepared by forming a 130 nm thick ITO film as an anode on a 1 mm thick alkali-free glass surface by sputtering deposition. Photolithography of this capsule After patterning, the substrate was cut into a size of 46 mm ⁇ 38 mm to prepare a substrate having an ITO film having a width of 12 mm at the center of the substrate.
- the aforementioned E-20 was deposited as an electron transporting material to a thickness of lOOnm.
- lithium was doped into the 0.5 nm organic layer.
- the organic layer shadow mask was replaced with a cathode shadow mask having four 5 XI 2 mm openings, and aluminum was deposited to a thickness of 200 nm to produce a cathode.
- the film thickness mentioned here is the display value of the crystal oscillation type film thickness monitor. In this way, a light emitting device having four 5 ⁇ 5 mm light emitting regions on the substrate was manufactured. When a direct current of 1 mA was passed through this light emitting device, green light emission with a luminance of 200 candela / square meter was obtained.
- the luminance was measured using a luminance meter (Topcon Co., Ltd., BM-8) with a viewing angle of 0.2 degrees and a response of lms.
- the driving voltage at this time was 5.5V.
- the durability of this light-emitting element was extremely excellent, and it maintained a brightness of 85% in 1000 hours under a constant current drive condition of 1 mA.
- a light emitting device was fabricated in exactly the same manner as in Example 11 except that the materials listed in Table 1 were used as the electron transporting material.
- Table 1 shows the evaluation results of the obtained light-emitting device and the HPLC purity of the residue after vapor deposition. [0112] [Table 1]
- a light emitting device was produced in the same manner as in Example 11 except that P-1 shown in the following formula was used as the electron transporting material.
- P-1 shown in the following formula was used as the electron transporting material.
- green light emission with a luminance of 200 candela / square meter was obtained.
- the driving voltage at this time was 7.0V.
- the luminance of this light-emitting element was reduced by half in 900 hours under the constant current drive condition of 1 mA.
- a light emitting device was produced in the same manner as in Example 11 except that P-2 shown in the following formula was used as the electron transporting material.
- P-2 shown in the following formula was used as the electron transporting material.
- a direct current of 1 mA was passed through this light emitting device, a green light emission with a luminance of 190 candela Z square meters was obtained.
- the driving voltage at this time was 6.8V.
- the brightness of this light-emitting element was reduced by half in 1000 hours under the constant current drive condition of 1mA.
- a light emitting device was fabricated in the same manner as in Example 11 except that P_3 represented by the following formula was used as the electron transport material.
- P_3 represented by the following formula was used as the electron transport material.
- the driving voltage at this time was 7. IV.
- the luminance of this light-emitting element was reduced by half in 500 hours under the constant current drive condition of 1mA.
- a light emitting device was fabricated in the same manner as in Example 11 except that P-4 shown in the following formula was used as the electron transport material.
- P-4 shown in the following formula was used as the electron transport material.
- green light emission with a luminance of 200 candela / square meter was obtained.
- the driving voltage at this time was 7.2V.
- the brightness of this light-emitting element was reduced by half in 450 hours under the constant current drive condition of 1 mA.
- a light emitting device was fabricated in the same manner as in Example 11 except that P-7 shown in the following formula was used as the electron transport material.
- P-7 shown in the following formula was used as the electron transport material.
- a light emitting device was fabricated in the same manner as in Example 11 except that P_8 shown in the following formula was used as the electron transport material.
- P_8 shown in the following formula was used as the electron transport material.
- green light emission with a luminance of 200 candela / square meter was obtained.
- the driving voltage at this time was 5.5V.
- This light-emitting element maintained 80% luminance in 1000 hours under a constant current driving condition of 1 mA.
- a light emitting device was fabricated in the same manner as in Example 11 except that 4H-pyran (DCJTB) was used so that the doping concentration was 2%. When a direct current of 1 mA was passed through the light emitting element, red-orange light emission with a luminance of 200 candela and Z square meter was obtained. The drive voltage at this time was 5.5V. The durability of this light emitting device was extremely excellent, and it maintained 80% brightness in 1000 hours under a constant current drive condition of 1 mA.
- Example 21 Except for using the materials listed in Table 2 as the electron transport material, the same as in Example 21. A light emitting element was manufactured. Table 2 shows the evaluation results of the obtained light-emitting element.
- a light emitting device was fabricated in exactly the same manner as in Example 21 except that P-1 was used as the electron transport material.
- P-1 was used as the electron transport material.
- red-orange light emission with a luminance of 180 candela / square meter was obtained.
- the driving voltage at this time was 7.5V.
- the brightness of this light-emitting device was reduced by half in 1000 hours under the constant current drive condition of 1mA.
- a light emitting device was fabricated in exactly the same manner as in Example 21 except that P-2 was used as the electron transport material.
- P-2 was used as the electron transport material.
- red-orange light emission with a luminance of 180 candela / square meter was obtained.
- the driving voltage at this time was 7.3V.
- the brightness of this light-emitting device was reduced by half in 1000 hours under the constant current drive condition of 1mA.
- a light emitting device was fabricated in exactly the same manner as in Example 21, except that P-3 was used as the electron transport material. When a direct current of 1 mA was passed through this light emitting element, reddish orange light emission with a luminance of 190 candela / square meter was obtained. The driving voltage at this time was 7.4V. The brightness of this light emitting device was halved in 800 hours under the constant current drive condition of 1mA.
- a light emitting device in exactly the same manner as in Example 21 except that P-4 was used as the electron transport material. was made.
- a direct current of 1 mA was passed through the light emitting element, red-orange light emission with a luminance of 200 candela / square square was obtained.
- the driving voltage at this time was 7.5V.
- the brightness of this light emitting device was halved in 800 hours under the constant current drive condition of 1mA.
- a light emitting device was produced in the same manner as in Example 21 except that P-5 was used as the electron transporting material.
- P-5 was used as the electron transporting material.
- red-orange light emission with a luminance of 190 candela Z square meters was obtained.
- the driving voltage at this time was 7.5V.
- the brightness of this light-emitting element was reduced by half in 600 hours under a constant current drive condition of 1 mA.
- a light emitting device was fabricated in exactly the same manner as in Example 21, except that P-6 was used as the electron transport material.
- P-6 was used as the electron transport material.
- red-orange light emission with a luminance of 200 candela Z square meters was obtained.
- the driving voltage at this time was 6.5V.
- the brightness of this light-emitting device was reduced by half in 1000 hours under the constant current drive condition of 1mA.
- the host material is 4, 4, 1 bis (diphenylvinyl) biphenyl (DPV Bi) and the guest material is bis (force rubazolylvinyl) biphenyl (BCZVBi) so that the doping concentration is 5%.
- a light emitting device was fabricated in exactly the same manner as in Example 11 except that it was used. When a direct current of 1 mA was passed through the light emitting element, blue light emission with a luminance of 190 candela / square meter was obtained. The driving voltage at this time was 4.8V.
- the light emitting device material of the present invention also functions in a blue light emitting device. This light-emitting element has a power that halves the brightness in 100 hours under constant current drive conditions of 1 mA. This is because the host material, not the electron transport material, crystallizes over time.
- a light emitting device was fabricated in exactly the same manner as in Example 31 except that P-2 was used as the electron transport material. When a direct current of 1 mA was passed through the light emitting element, blue light emission with a luminance of 150 candela Z square minor was obtained. The driving voltage at this time was 6.5V. This light emitting device halved its brightness in 10 hours under a constant current drive condition of 1 mA.
- Example 32 1, 4_diketo-2,5_bis (3,5-dimethylbenzyl) -3,6_bis (4-methylphenyl) pyrrole [3, 4_c] pyrrole as the host material and 4 as guest material , 4-Difunoleo mouth-1, 3, 5, 7-Tetrafenenore 4 Bola_3a, 4a_Diaza Indacene was used in the same manner as in Example 21 except that the doping concentration was 1%. Was made. When a direct current of 1 mA was passed through the light emitting element, a red light emission with a luminance of 210 candela / square meter was obtained. The driving voltage at this time was 5.2V. The durability of this light-emitting element was extremely excellent, and it maintained 80% brightness in 1000 hours under a constant current drive condition of 1 mA.
- a light emitting device was fabricated in exactly the same manner as in Example 32, except that the materials listed in Table 3 were used as the electron transporting material. Table 3 shows the evaluation results of the obtained light-emitting element.
- a light emitting device was fabricated in exactly the same manner as in Example 32 except that P-1 was used as the electron transport material.
- P-1 was used as the electron transport material.
- a direct current of 1 mA was passed through the light emitting device, a red light emission with a luminance of 200 candela Z square meters was obtained.
- the driving voltage at this time was 6.5V.
- the luminance of this light emitting device was halved in 1000 hours under the constant current drive condition of 1mA.
- the ITO substrate on which the ITO film was formed was cut into a size of 46 mm ⁇ 38 mm.
- This ITO film was patterned using a photolithographic method into 300 ⁇ m pitch (remaining width 270 ⁇ m) x 32 stripes.
- One side of the long side of the ITO stripe is extended to 1.27 mm pitch (opening width 800 xm) to facilitate electrical connection to the outside. Washed with the substrate "Semikokurin 56" (Furuuchi Chemical Corporation), cell after treatment with UV ozone in a vacuum evaporation apparatus Ttoshi, the degree of vacuum in the apparatus becomes less than 5 X 10- 4 Pa Was exhausted.
- the mask was exchanged so as to be orthogonal to the mask, and fixed with a magnet from the back so that the mask and the substrate were in close contact.
- aluminum was deposited to 200 nm to produce a 32 ⁇ 16 dot matrix device. When this device was driven in a matrix, characters could be displayed without crosstalk.
- the light-emitting element material of the present invention and the light-emitting element using the same can be suitably used in fields such as display elements, flat panel displays, backlights, lighting, interiors, signs, signboards, electrophotographic machines, and optical signal generators. It is.
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Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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CN2004800438504A CN101010404B (zh) | 2004-08-23 | 2004-08-23 | 用于发光元件的材料及发光元件 |
KR1020077004181A KR101148460B1 (ko) | 2004-08-23 | 2004-08-23 | 발광 소자용 재료 및 발광 소자 |
PCT/JP2004/012054 WO2006021982A1 (ja) | 2004-08-23 | 2004-08-23 | 発光素子用材料および発光素子 |
US11/660,964 US8114529B2 (en) | 2004-08-23 | 2004-08-23 | Material for lighting emitting device and light emitting device |
EP04772015A EP1783189A4 (en) | 2004-08-23 | 2004-08-23 | FABRIC FOR LUMINESCENT ELEMENT AS WELL AS LUMINESCENT ELEMENT |
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PCT/JP2004/012054 WO2006021982A1 (ja) | 2004-08-23 | 2004-08-23 | 発光素子用材料および発光素子 |
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US (1) | US8114529B2 (ja) |
EP (1) | EP1783189A4 (ja) |
KR (1) | KR101148460B1 (ja) |
CN (1) | CN101010404B (ja) |
WO (1) | WO2006021982A1 (ja) |
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JP2008120688A (ja) * | 2006-11-08 | 2008-05-29 | Chemiprokasei Kaisha Ltd | 新規なジ(フェナントロリン)誘導体、それよりなる電子輸送材料およびそれを含む有機エレクトロルミネッセンス素子 |
JP2008177455A (ja) * | 2007-01-22 | 2008-07-31 | Toray Ind Inc | 発光素子 |
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WO2013145667A1 (ja) | 2012-03-29 | 2013-10-03 | ソニー株式会社 | 有機エレクトロルミネッセンス素子 |
WO2013145666A1 (ja) | 2012-03-29 | 2013-10-03 | ソニー株式会社 | 有機エレクトロルミネッセンス素子 |
WO2018212169A1 (ja) | 2017-05-16 | 2018-11-22 | 学校法人関西学院 | 多環芳香族化合物 |
WO2019003615A1 (ja) | 2017-06-30 | 2019-01-03 | 学校法人関西学院 | 有機電界発光素子 |
WO2019013063A1 (ja) * | 2017-07-10 | 2019-01-17 | 東レ株式会社 | 発光素子、それを含むディスプレイ、照明装置およびセンサ |
JPWO2019013063A1 (ja) * | 2017-07-10 | 2020-05-07 | 東レ株式会社 | 発光素子、それを含むディスプレイ、照明装置およびセンサ |
JP7120015B2 (ja) | 2017-07-10 | 2022-08-17 | 東レ株式会社 | 発光素子 |
WO2021193818A1 (ja) * | 2020-03-26 | 2021-09-30 | 東レ株式会社 | フェナントロリン誘導体の結晶およびその製造方法ならびにそれを用いた発光素子 |
JPWO2021193818A1 (ja) * | 2020-03-26 | 2021-09-30 | ||
JP2021155351A (ja) * | 2020-03-26 | 2021-10-07 | 東レ株式会社 | フェナントロリン誘導体の結晶およびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20070267958A1 (en) | 2007-11-22 |
EP1783189A4 (en) | 2009-04-08 |
EP1783189A1 (en) | 2007-05-09 |
CN101010404B (zh) | 2010-08-11 |
CN101010404A (zh) | 2007-08-01 |
US8114529B2 (en) | 2012-02-14 |
KR20070052764A (ko) | 2007-05-22 |
KR101148460B1 (ko) | 2012-05-23 |
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