WO2005086539A1 - 有機エレクトロルミネッセンス表示装置 - Google Patents
有機エレクトロルミネッセンス表示装置 Download PDFInfo
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- WO2005086539A1 WO2005086539A1 PCT/JP2005/002558 JP2005002558W WO2005086539A1 WO 2005086539 A1 WO2005086539 A1 WO 2005086539A1 JP 2005002558 W JP2005002558 W JP 2005002558W WO 2005086539 A1 WO2005086539 A1 WO 2005086539A1
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- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 125000003356 phenylsulfanyl group Chemical group [*]SC1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 125000001557 phthalyl group Chemical group C(=O)(O)C1=C(C(=O)*)C=CC=C1 0.000 description 1
- 125000001388 picenyl group Chemical group C1(=CC=CC2=CC=C3C4=CC=C5C=CC=CC5=C4C=CC3=C21)* 0.000 description 1
- 125000003386 piperidinyl group Chemical group 0.000 description 1
- 229920000548 poly(silane) polymer Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- JEXVQSWXXUJEMA-UHFFFAOYSA-N pyrazol-3-one Chemical class O=C1C=CN=N1 JEXVQSWXXUJEMA-UHFFFAOYSA-N 0.000 description 1
- 150000003219 pyrazolines Chemical class 0.000 description 1
- 125000001725 pyrenyl group Chemical group 0.000 description 1
- 125000005548 pyrenylene group Chemical group 0.000 description 1
- 125000002098 pyridazinyl group Chemical group 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- FMKFBRKHHLWKDB-UHFFFAOYSA-N rubicene Chemical group C12=CC=CC=C2C2=CC=CC3=C2C1=C1C=CC=C2C4=CC=CC=C4C3=C21 FMKFBRKHHLWKDB-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000007789 sealing Methods 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
- 239000004945 silicone rubber Substances 0.000 description 1
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052950 sphalerite Inorganic materials 0.000 description 1
- 125000004079 stearyl 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])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- UFPWIQQSPQSOKM-UHFFFAOYSA-H terbium(3+);trisulfate Chemical compound [Tb+3].[Tb+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O UFPWIQQSPQSOKM-UHFFFAOYSA-H 0.000 description 1
- 125000004213 tert-butoxy group Chemical group [H]C([H])([H])C(O*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000001935 tetracenyl group Chemical group C1(=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C12)* 0.000 description 1
- KTQYWNARBMKMCX-UHFFFAOYSA-N tetraphenylene Chemical group C1=CC=C2C3=CC=CC=C3C3=CC=CC=C3C3=CC=CC=C3C2=C1 KTQYWNARBMKMCX-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- RMVRSNDYEFQCLF-UHFFFAOYSA-N thiophenol Chemical group SC1=CC=CC=C1 RMVRSNDYEFQCLF-UHFFFAOYSA-N 0.000 description 1
- HLLICFJUWSZHRJ-UHFFFAOYSA-N tioxidazole Chemical compound CCCOC1=CC=C2N=C(NC(=O)OC)SC2=C1 HLLICFJUWSZHRJ-UHFFFAOYSA-N 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 125000004784 trichloromethoxy group Chemical group ClC(O*)(Cl)Cl 0.000 description 1
- 125000003866 trichloromethyl group Chemical group ClC(Cl)(Cl)* 0.000 description 1
- 125000005034 trifluormethylthio group Chemical group FC(S*)(F)F 0.000 description 1
- 125000003652 trifluoroethoxy group Chemical group FC(CO*)(F)F 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
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 229910003454 ytterbium oxide Inorganic materials 0.000 description 1
- 229940075624 ytterbium oxide Drugs 0.000 description 1
- OYQCBJZGELKKPM-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O-2].[Zn+2].[O-2].[In+3] OYQCBJZGELKKPM-UHFFFAOYSA-N 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
Classifications
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- 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
- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
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- 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
- H05B33/22—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
- H05B33/24—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers of metallic reflective layers
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- 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
- H05B33/26—Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/852—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/875—Arrangements for extracting light from the devices
- H10K59/876—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair
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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
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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
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
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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
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/624—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing six or more rings
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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
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
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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
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
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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
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
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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
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/302—Details of OLEDs of OLED structures
- H10K2102/3023—Direction of light emission
- H10K2102/3026—Top emission
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/351—Thickness
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- 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
Definitions
- the present invention relates to an organic electroluminescent display device. More specifically, the present invention relates to an organic electroluminescent display device capable of emitting multicolor light by juxtaposing organic electroluminescent devices having resonator structures having different optical distances on the same substrate. .
- a full-color technology using organic electoluminescence (hereinafter sometimes referred to as "EL") is a three-color coating method, a method in which a white EL is combined with a color filter, and a method using EL. And a method using a combination of a color conversion film and a color filter.
- Full-color display systems are classified into a bottom emission structure and a top emission structure.
- the power on the TFT glass substrate side also extracts light! /, The structure of taking out light without passing through the substrate and the opposite force. As a result, it is possible to improve the aperture ratio with respect to the light emitting section, and to achieve higher luminance.
- L is the optical distance
- ⁇ is the wavelength of the light to be extracted
- m is an integer
- ⁇ is the phase shift
- the optical distance L is configured to be the minimum positive value.
- Each of the R, G, and B pixels has a structure in which an organic EL layer is interposed between a reflective layer and a transparent layer, and a color filter is provided on the light output side or the external light incident side of the transparent layer. arranged the display device is disclosed (for example, see Patent Document 2.) 0
- Patent Document 1 International Publication No. WO01Z39554 pamphlet
- Patent Document 2 JP-A-2002-373776
- the present invention has been made in view of the above-described problems, and has as its object to provide an organic EL display device that can emit multicolor light without lowering the efficiency of the organic EL element and is easy to manufacture. I do.
- each organic EL element formed on the same substrate was adjusted by the inorganic compound layer.
- Each element can emit light of different colors (multicolor light emission), and even with organic EL elements (pixels) with different colors, the organic light-emitting medium layer, light reflection layer, transparent electrode, etc.
- the present invention has been found that a high-efficiency organic EL display device can be obtained in an easy manufacturing process because it is not necessary to form each layer for each element because it can be formed as the same layer as described above. Completed.
- the following organic EL display device and its manufacturing method are provided.
- a substrate comprising: a first organic electroluminescent luminescent element portion and a second organic electroluminescent device portion juxtaposed on the same surface of the substrate, wherein the first organic electroluminescent luminescent device is provided.
- An element portion including at least a light-reflective conductive layer, an organic light-emitting medium layer, and a transparent electrode layer in this order, and having a light-reflective layer inside or outside the organic light-emitting medium layer or the transparent electrode layer;
- An organic electroluminescent display device in which the emission spectrum of light emitted from the one organic electroluminescent device is different from the emission spectrum of light emitted from the second organic electroluminescent device.
- the recto-luminescence element portion includes at least a light-reflective conductive layer, a first inorganic compound layer, an organic light-emitting medium layer, and a transparent electrode layer in this order, and a light-emitting element inside or outside the organic light-emitting medium layer or the transparent electrode layer.
- the second and the emission spectrum of the organic elect mouth luminescent element force emitted light are different organic E recto port luminescence display device.
- the first organic electroluminescent device has at least a light-reflective conductive layer, an organic light-emitting medium layer, and a transparent electrode layer in this order, and the inside of the organic light-emitting medium layer or the transparent electrode layer or An element having a light reflection layer on the outside, wherein the second organic electroluminescent element portion includes at least a light reflection conductive layer, a first inorganic compound layer, an organic light emitting medium layer, and a transparent electrode layer in this order.
- the toroluminescence element portion includes at least a light-reflective conductive layer, a first inorganic compound layer, a second inorganic compound layer, an organic light-emitting medium layer, and a transparent electrode layer in this order, and the organic light-emitting medium layer or the transparent electrode layer
- An organic electroluminescent display device having a light reflection layer inside or outside, wherein the first, second, and third organic electroluminescent element portions have different light emission spectra.
- the first inorganic compound layer and the second inorganic compound layer include an inorganic oxide, and the crystallinity of the first inorganic compound layer is higher than the crystallinity of the second inorganic compound layer.
- the first inorganic compound layer and Z or the second inorganic compound layer are selected from the group consisting of In, Sn, Zn, Ce, Sm, Pr, Nb, Tb, Cd, Ga, Al, Mo and W. 18.
- the organic electroluminescent display device according to any one of items 17 to 17, containing an oxide of an element.
- organic compound according to any one of (1) to (7) including an oxide of the element selected from the group consisting of the first inorganic compound layer and Z or the second inorganic compound layer In, Sn, and Zn.
- Elect mouth luminescence display device including an oxide of the element selected from the group consisting of the first inorganic compound layer and Z or the second inorganic compound layer In, Sn, and Zn.
- the light reflective conductive layer is composed of Al, Ag, Au, Pt, Cu, Mg, Cr, Mo, W, Ta, Nb, Li, Mn, Ca, Yb, Ti, Ir, Be, Hf,
- the light reflection layer is composed of Al, Ag, Au, Pt, Cu, Mg, Cr, Mo, W, Ta, Nb, Li, Mn, Ca, Yb, Ti, Ir, Be, Hf, Eu, Sr, 11.
- the organic electroluminescent device according to any one of items 1 to 10, containing one or more metal elements selected from the group consisting of Ba, Cs, Na and K. Display device.
- the organic electroluminescent display device according to any one of items 11 to 11, further comprising a color conversion section.
- the organic electroluminescent display device according to any one of items 1 to 12, further comprising a color filter.
- the method for producing an organic electroluminescent display device including a step of forming the first inorganic compound layer and Z or the second inorganic compound layer by a wet etching method.
- the organic EL display device of the present invention can realize multicolor light emission without reducing the luminous efficiency of the organic EL element by forming organic EL elements having different resonance parts on the same substrate.
- the optical thickness of the optical resonator is controlled by forming an inorganic compound layer on the light-reflective conductive layer, it is necessary to change the thickness of the organic light-emitting medium layer, which is set to an optimum value for the light-emitting element.
- the optical film thickness of each organic EL element to be connected can be freely adjusted.
- FIG. 1 is a view showing an organic EL display device according to a first embodiment.
- FIG. 2 is a view showing an organic EL display device according to a second embodiment.
- FIG. 3 is a view showing an organic EL display device according to a third embodiment.
- FIG. 4 is a view showing an example of a formation position of a light reflection layer.
- FIG. 5 is a view showing a manufacturing process of the organic EL display device.
- FIG. 6 is a view showing a manufacturing process of the organic EL display device.
- FIG. 7 is a view showing a manufacturing process of the organic EL display device.
- FIG. 1 is a diagram illustrating an organic EL display device according to a first embodiment of the present invention.
- the organic EL display device 1 has a first organic EL element section 10 and a second organic EL element section 20 juxtaposed on a substrate 11.
- the first organic EL element section 10 has a structure in which a light-reflective conductive layer 12, an organic light-emitting medium layer 13, a light-reflective layer 14, and a transparent electrode layer 15 are laminated on a substrate 11 in this order.
- the second organic EL element section 20 has a structure in which a light-reflective conductive layer 12, a first inorganic compound layer 21, an organic luminescent medium layer 13, a light-reflective layer 14, and a transparent electrode layer 15 are laminated in this order on a substrate 11. It has structure.
- the light-reflective conductive layer 12 is a layer that functions as an electrode for supplying holes or electrons and reflects light generated in the organic light-emitting medium layer 13 in a light extraction direction (upward in FIG. 1).
- the organic light emitting medium 13 is a layer including an organic light emitting layer and generating light by recombination of electrons and holes.
- the light reflecting layer 14 is a layer that reflects and transmits light generated in the organic light emitting medium layer 13.
- the transparent electrode layer 15 is an electrode that supplies holes or electrons, and is a layer that transmits light generated in the organic light emitting medium 13 and extracts the light to the outside.
- the first inorganic compound layer 21 formed in the second organic EL element unit 20 is a layer for adjusting the optical film thickness so as to emit a color different from that of the first organic EL element unit 10.
- the first organic EL element section 10 and the second organic EL element section 20 have a resonator structure in which a portion between the light reflection conductive layer 12 and the light reflection layer 14 is a resonance section. Yes.
- a device having a resonator structure light generated in the organic luminescent medium 13 is repeatedly reflected between two light reflecting surfaces (the light reflecting conductive layer 12 and the light reflecting layer 14), and has a wavelength around a wavelength satisfying the following expression. The light is intensified and consequently is emitted out of the device with enhanced emphasis over light of other wavelengths.
- the optical distance L is the product of the refractive index n of the medium through which light passes and the actual distance L (nL)
- the optical distance (optical film thickness) is L In the second organic EL element section 20, it is L2.
- the optical distances of L1 and L2 are different by an amount corresponding to the thickness of the first inorganic compound layer 21.
- the first organic EL element section 10 can be set so that light of a certain wavelength ⁇ 1 is emphasized and extracted to the outside of the element, and the second organic EL element section 20 has a wavelength 2 different from ⁇ 1. It can be set to emphasize the light of the light and take it out of the device. Thus, the emission spectra of the light extracted from these two element portions can be made different from each other, so that multi-color emission is possible.
- the organic light emitting medium layer 13, the light reflection layer 14, and the transparent electrode layer 15 may be formed as a common film. Can be. For this reason, the manufacturing process can be simplified, which is extremely advantageous in industrial production.
- FIG. 2 is a diagram illustrating an organic EL display device according to a second embodiment of the present invention.
- the organic EL display device 2 has a second organic EL element section 20 and a third organic EL element section 30 juxtaposed on the substrate 11.
- the second organic EL element section 20 is the same as in the first embodiment described above.
- the third organic EL element section 30 includes a substrate 11, a light-reflective conductive layer 12, a first inorganic compound layer 21, a second inorganic compound layer 31, an organic luminescent medium layer 13, a light-reflective layer 14, and a transparent electrode. It has a structure in which the layers 15 are stacked in this order. That is, except that the second inorganic compound layer 31 is formed, it is the same as the second organic EL element section 20, and the function of each layer is also the same.
- the second inorganic compound layer 31 formed in the third organic EL element section 30 is a layer for adjusting an optical film thickness in order to emit a color different from that of the second organic EL element section 20. It is.
- the second organic EL element section 20 and the third organic EL element section 30 have a resonator structure in which a portion between the light reflection conductive layer 12 and the light reflection layer 14 is a resonance portion.
- the optical distance is L2
- the optical distance between L2 and L3 differs by an amount corresponding to the thickness of the second inorganic compound layer 31.
- the wavelength is different from ⁇ 2.
- Increase the wavelength ⁇ 3 To take out light outside the element. This makes it possible to make emission spectra of light extracted from these two element portions different from each other, so that multicolor emission is possible.
- the optical distance of the resonance part of the second organic EL element part 20 and the third organic EL element part 30 is not the thickness of the organic light emitting medium layer 13 but the thickness of the inorganic compound layers 21 and 31. Can be controlled by For this reason, the optical distance of the resonance part can be adjusted while maintaining the optimum film thickness at which the organic compound used in the organic light emitting medium layer 13 functions efficiently. Therefore, it is possible to manufacture an organic EL display device capable of emitting multicolor light without reducing the luminous efficiency of the organic EL element.
- the force is such that two types of EL element sections, that is, the second organic EL element section 20 and the third organic EL element section 30 are arranged side by side on the substrate 11 are not limited thereto.
- FIG. 3 is a view showing an organic EL display device according to a third embodiment of the present invention.
- the organic EL display device 3 has a first organic EL element section 10, a second organic EL element section 20, and a third organic EL element section 30 juxtaposed on a substrate 11.
- each organic EL element section 10, 20, 30 is the same as in the first and second embodiments described above, and the function of each layer is also the same.
- each of the organic EL element sections 10, 20, and 30 has a resonator structure having a different optical distance (optical thickness). That is, the optical distance is L1 in the first organic EL element section 10, L2 in the second organic EL element section 20, and L3 in the third organic EL element section 30.
- each of the organic EL element sections 10, 20, and 30, light ( ⁇ 1, ⁇ 2, ⁇ 3) having a different wavelength is emphasized and taken out of the element. This makes it possible to make emission spectra of light extracted from these three element portions different from each other, so that multicolor emission is possible.
- full-color display is possible by setting the optical distance of the resonator so that each element emits one of three different primary colors. And a functional organic EL display device.
- Each of the organic EL element units shown in FIGS. 1 and 3 is a top emission type which is a top emission type that also extracts the light on the transparent electrode 15 side, and is a bottom emission type that extracts the light on the substrate 11 side.
- the light reflection layer is formed between the organic light emitting medium and the transparent electrode layer, but is not limited to this, and may be formed inside or outside the organic light emitting medium layer or the transparent electrode layer.
- Figure 4 shows an example of the position where the light reflecting layer is formed.
- the light reflection layer 14 may be provided inside the organic light emitting medium (between the organic light emitting media 13a and 13b).
- the organic light emitting medium 13a sandwiched between the light reflecting conductive layer 12 and the light reflecting layer 14 is adjusted by the resonance portion, but is adjusted above the light reflecting layer 14 (light extraction side).
- Light generated from a certain organic light emitting medium 13b is radiated to the outside without being adjusted by the resonance unit.
- the light reflection layer 14 may be provided inside the transparent electrode (between the organic luminescent media 15a and 15b) as shown in FIG. 4B or outside the transparent electrode as shown in FIG. 4C. Good.
- the optical distance of the resonance section can be adjusted also by the thickness of the transparent electrode.
- a glass plate, a polymer plate or the like is preferably used as the substrate.
- the glass plate soda lime glass, norium strontium-containing glass, lead glass, aluminosilicate glass, borosilicate glass, norium borosilicate glass, quartz and the like are particularly preferable.
- the polymer plate polycarbonate, acrylic, polyethylene terephthalate, polyether sulfide, polysulfone and the like are preferable.
- a material for forming the light-reflective conductive layer a material having light reflectivity and capable of exhibiting a function as an electrode is used.
- the light reflectance is preferably 20% or more, more preferably 30% or more.
- the thickness of the light-reflective conductive layer depends on the material used, but is preferably 100 nm-l ⁇ m. If it is smaller than 100 nm, the light reflectance may be lowered, or the electric resistance may be increased when used as an electrode layer.
- the inorganic compound layer can be used without any particular limitation as long as it has a light transmittance of 50% or more in the visible light wavelength region (380 nm to 780 nm). Preferably, those having a light transmittance of 80% or more are used.
- a compound having a charge injecting property, a conductive property, or a semiconductive property is preferable.
- a compound having a charge injecting property, a conductive property, or a semiconductive property is preferable.
- a conductive radical salt (b) an acceptor component which is a conductive oxide containing a transition metal, and a donor component which is an alkali metal and Z or an alkaline earth metal, c) chalcogenides, chalcogenides and alkali metals.
- Examples of the conductive organic radical salt include those represented by the following formula.
- D is a donor molecule or atom
- A is an acceptor molecule or atom
- y is an integer of 115
- z is an integer of 115. .
- alkali metals such as Li, K, Na, Rb, and Cs, alkaline earth metals such as Ca, and La and NH are preferable.
- A is TaF, AsF, PF, ReO, CIO, BF, Au (CN), Ni (CN), CoCl
- MnCl KHg (SCN), Hg (SCN), NH (SCN) and the like are preferable.
- An exceptor component which is a conductive oxide containing a transition metal and a donor component which is an alkali metal and Z or an alkaline earth metal but the exceptor components include: Li Ti O, Li VO, Er NbO, La TiO, Sr VO, Ca CrO, Sr CrO, A Mo x24 x 24 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x
- At least one oxidized product is suitable.
- alkali metal and alkaline earth metal those similar to the above D are preferable.
- chalcogenide As chalcogenide, ZnSe, ZnS, TaS, TaSe, ZnO and the like are preferred! further , A chalcogenide and an alkali metal. Preferred examples include LiZn Se, LiZnSi, LiZnO, LilnO and the like.
- inorganic oxides can also be preferably used.
- examples include oxides such as In, Sn, Zn, Ce, Sm, Pr, Nb, Tb, Cd, Ga, Al, Mo, and W, and preferably oxides containing In, Sn, and Zn. .
- the materials used for the light-reflective conductive layer, the first inorganic compound layer, and the second inorganic compound layer preferably have different etching characteristics. That is, it is preferable to select a material that is easily etched in the order of the light-reflective conductive layer, the first inorganic compound layer, and the second inorganic compound layer!
- the first inorganic compound layer a material that is more easily etched by a weaker acid than the light reflective conductive layer is selected, and for the second inorganic compound layer, a material that is more easily etched by a weaker acid than the first inorganic compound layer is selected. ⁇ ⁇ Select the material.
- the present invention by making the crystallinity of the first inorganic compound layer larger than the crystallinity of the second inorganic compound layer, it is possible to provide a difference in the etching characteristics of the two layers.
- a light reflecting conductive layer is formed by sputtering Cr on a glass substrate.
- This substrate is etched with a mixed solution of cerium nitrate ammonium salt-hydrogen peroxide solution (CAN) to obtain a substrate with a light-reflective conductive layer having a desired pattern.
- CAN cerium nitrate ammonium salt-hydrogen peroxide solution
- ITO is formed into a film by sputtering and etched with an oxalic acid aqueous solution to obtain a substrate with an amorphous (non-crystalline) ITO film having a desired pattern.
- the crystal which is the first inorganic compound layer A substrate with an ITO film can be obtained.
- a layer can be formed without being etched with an oxalic acid aqueous solution.
- ⁇ is formed thereon by sputtering and etched with an oxalic acid aqueous solution to obtain a substrate having a second pattern with a desired inorganic compound layer.
- the second inorganic compound layer non-crystalline ⁇ may be used.
- the crystallinity can be measured by X-ray diffraction measurement. That is, the sample surface is irradiated with X-rays, the angle (2 °) and the intensity of the diffraction line are measured, and the integrated intensity specific power of the diffraction peak is also determined as the crystallinity.
- the first inorganic compound layer is crystalline and the second inorganic compound layer is amorphous.
- the second inorganic compound layer can be more easily etched with a weak acid than the first inorganic compound layer.
- Examples of the inorganic compound which is most easily etched by a weak acid include indium oxide zinc oxide ( ⁇ ), and a compound obtained by adding a lanthanoid-based metal oxide to ⁇ .
- Examples of the lanthanoid-based metal oxide include, for example, cerium oxide, iridium praseodymium, neodymium oxide, samarium acid sardium, pium sulphate, sulphate gadolinium, sulphate terbium, acid And dysprosium, holmium oxide, erbium oxide, thulium oxide, ytterbium oxide, and lutetium oxide.
- the content ratio of the lanthanoid-based metal oxide is preferably 0.1 to 10 atomic% with respect to all metal atoms of the metal oxide in the metal oxide layer.
- non-crystalline ⁇ obtained by sputtering indium oxide indium oxide ( ⁇ ) in the presence of hydrogen or the like is also suitable.
- Those which can be etched with a weaker acid than the light-reflective conductive layer and are harder to be etched than the inorganic compounds described above include ⁇ , cerium compounds of indium oxide / tungstate, tungstate / oxide of indium oxide, and indium oxide / dioxide. Molybdenum oxide compounds and the like can be mentioned. Amorphous and non-crystalline substances of the above compounds are also preferred.
- the non-crystalline ITO and the non-crystalline substance of the above compound can be converted into a crystalline compound by thermal annealing, so that the second inorganic compound layer is formed on the first inorganic compound layer. It is particularly suitable for [0045] It is preferable that the first inorganic compound layer is ITO and the second inorganic compound layer is ⁇ ⁇ , because damage to the underlying layer during etching can be reduced.
- the thickness of the first inorganic compound layer and the thickness of the second inorganic compound layer may be appropriately adjusted so that light of a desired wavelength resonates in the resonance section of each EL element section.
- it is in the range of 5 ⁇ m-100OOOnm.
- the organic light emitting medium layer is a single layer or a laminate including at least a light emitting layer, and has, for example, the following configuration.
- the light emitting layer As a method for forming the light emitting layer, a known method such as an evaporation method, a spin coating method, and an LB method can be applied. Further, as disclosed in Japanese Patent Application Laid-Open No. 57-51781, after a binder such as a resin and a material conjugate are dissolved in a solvent to form a solution, the solution is spin-coated or the like.
- the light emitting layer can also be formed by thin film forming.
- the light emitting layer may include a plurality of layers having different colors.
- white light emission can be obtained by stacking a blue light emitting layer and an orange light emitting layer.
- a layer in which two or more kinds of light emitting materials are mixed in the light emitting layer can be used. In this case, a single layer or a laminated layer can be used.
- a material used for the light emitting layer a material known as a long-lived light emitting material can be used.
- a fluorescent material and a phosphorescent material are used. In terms of luminous efficiency, phosphorescent light is preferred, but in the following, a description will be given using a fluorescent material as an example.
- the light emitting material it is desirable to use a material represented by the formula (1) as the light emitting material.
- Ar 1 is an aromatic ring having 6 to 50 nuclear carbon atoms
- X is a substituent
- 1 is an integer of 1 to 5
- m is an integer of 0 to 6.
- Ar 1 is, specifically, a phenyl ring, a naphthyl ring, an anthracene ring, a biphenylene ring, an azulene ring, an acenaphthylene ring, a fluorene ring, a phenanthrene ring, a fluoranthene ring, or an acephenanthrylene ring , A triphenylene ring, a pyrene ring, a talycene ring, a naphthacene ring, a picene ring, a perylene ring, a pentaphene ring, a pentacene ring, a tetraphenylene ring, a hexaphene ring, a hexacene ring, a rubicene ring, a coronene ring, and a trinaphthylene ring No.
- Preferable examples include a phenyl ring, a naphthyl ring, an anthracene ring, an acenaphthylene ring, a fluorene ring, a phenanthrene ring, a phneoleanthene ring, a triphenylene ring, a pyrene ring, a thalicene ring, a perylene ring, and a trinaphthylene ring.
- a phenyl ring, a naphthyl ring, an anthracene ring, a fluorene ring, a phenanthrene ring, a fluoranthene ring, a pyrene ring, a thalicene ring, a perylene ring and the like are mentioned.
- X is specifically a substituted or unsubstituted aromatic group having 6 to 50 nuclear carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 5 to 50 nuclear atoms, substituted or unsubstituted.
- Examples of the substituted or unsubstituted aromatic group having 6 to 50 nuclear carbon atoms include phenyl, 1 naphthyl, 2 naphthyl, 1 anthryl, 2 anthryl, 9 anthryl, and 1-phenanthryl.
- Examples of the substituted or unsubstituted aromatic heterocyclic group having 5 to 50 nuclear atoms include a 1-pyrrolyl group, a 2-pyrrolyl group, a 3-pyrrolyl group, a pyrazur group, and a 2-pyridyl group.
- substituted or unsubstituted alkyl groups having 1 to 50 carbon atoms include methyl, ethyl, propyl, isopropyl, n-butyl, s-butyl, isobutyl, t-butyl, n-pentyl, n-hexyl group, n-heptyl group, n-octyl group, hydroxymethyl group, 1-hydroxyethyl group, 2-hydroxyethyl group, 2-hydroxyisobutyl group, 1,2-dihydroxyethyl group 1,3-dihydroxyisopropyl group, 2,3-dihydroxy-t-butyl group, 1,2,3-trihydroxypropyl group, chloromethyl group, 1-chloroethyl group, 2-chloroethyl group, 2-chloroethyl group Isobutyl, 1,2-dichloromethyl, 1,3-dichloroisopropyl, 2,3-dichlorotert
- a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms is a group represented by OY, and examples of ⁇ include a methyl group, an ethyl group, a propyl group, an isopropyl group, an ⁇ butyl group, and an s- group.
- Examples of the substituted or unsubstituted aralkyl group having 1 to 50 carbon atoms include a benzyl group, a 1-phenylethyl group, a 2-phenyl-ethyl group, a 1-phenyl-isopropyl group, a 2-phenyl-isopropyl group.
- a substituted or unsubstituted aryloxy group having 5 to 50 nuclear atoms is represented by —OY ′, and examples of Y ′ include phenyl, 1-naphthyl, 2-naphthyl, 1-anthryl, and 2-anthryl.
- a substituted or unsubstituted arylthio group having 5 to 50 nuclear atoms is represented by —SY ", and examples of Y" include phenyl, 1-naphthyl, 2-naphthyl, 1-anthryl, and 2-anthryl. , 9 anthryl, 1 phenanthryl, 2 phenanthryl, 3 phenanthryl,
- a substituted or unsubstituted carboxyl group having 1 to 50 carbon atoms is represented by —COOZ, and examples of Z include methyl, ethyl, propyl, isopropyl, n-butyl, s-butyl, and isobutyl.
- substituted or unsubstituted styryl group examples include a 2-phenyl-1-butyl group, a 2,2-diphenyl-1-butyl group, a 1,2,2-triphenyl-1-butyl group and the like.
- halogen group examples include fluorine, chlorine, bromine, iodine and the like.
- n 1 is an integer of 115, preferably 112.
- m is an integer of 0-6, preferably 0-4.
- one Ar 1 may be the same or different.
- the light emitting performance can be improved.
- a material known as a pant material having a long life for example, can be used, but it is preferable to use a material represented by the formula (2) as a dopant material of the light emitting material.
- Ar 2 —Ar 4 is a substituted or unsubstituted aromatic group having 6-50 nuclear carbon atoms, a substituted or unsubstituted styryl group, and p is an integer of 1-4.
- Examples of the substituted or unsubstituted aromatic group having 6 to 50 nuclear carbon atoms include phenyl, 1 naphthyl, 2 naphthyl, 1 anthryl, 2 anthryl, 9 anthryl, 1-phenanthryl Group, 2 phenanthryl group, 3 phenanthryl group, 4-phenanthryl group, 9-phenanthryl group, 1 naphthacyl group, 2 naphthacyl group, 9 naphthacyl group, 1-pyrylyl group, 2-pyrylyl Group, 4-pyreyl group, 2-biphenyl-yl group, 3-biphenyl-yl group, 4-biphenyl-yl group, p-terphenyl 4-yl group, p-terphenyl 3-yl group, p-terfyl 2-yl group, m terfel 4-yl group, m terfel 3-yl group, m terfyl 2-yl group, o-tolyl group,
- substituted or unsubstituted styryl group examples include a 2-phenyl-1-butyl group, a 2,2-diphenyl-1-butyl group, a 1,2,2-triphenyl-1-butyl group and the like.
- p is an integer of 1 to 4.
- p Ar 3 and Ar 4 may be the same or different.
- Specific examples of the compound represented by the formula (2) are shown below.
- a hole transport layer can be provided between the light emitting layer and the hole injection layer.
- the hole transport layer is preferably made of a material that transports holes to the light emitting layer at a lower electric field intensity. That is, hole mobility is 10 4 -. To 10 6 V / cm when an electric field is applied, if it is 10- 4 cm 2 ZV seconds preferred.
- the material for forming the hole transport layer may be any of those commonly used as charge transport materials for holes in photoconductive materials, and those known for use in the hole transport layer of EL devices. Any of these can be selected and used.
- JP-A-61-210363 No. 61-228451
- JP-A-61-14642 JP-A-61-72255, JP-A-62-47646, JP-A-62-36674, JP-A-6-10652, JP-A-62-30255, JP-A-60-93455 JP-A-60-94462, JP-A-60-174749, JP-A-60-175052, etc.
- silazane derivatives U.S. Pat. No. 4,950,950
- polysilanes Japanese Unexamined Patent Publication No. JP-A-2-204996
- an aromatic copolymer JP-A-2-282263
- a conductive polymer oligomer disclosed in JP-A-1121399 (particularly Offen oligomer).
- the hole transport layer can be formed from the above-mentioned compound by a known method such as a vacuum evaporation method, a spin coating method, a casting method, and an LB method.
- the thickness of the hole transport layer is not particularly limited, but is preferably 5 nm to 5 ⁇ m, and particularly preferably 5 to 40 nm.
- the hole transport layer may be composed of one or more of the above-mentioned materials. Further, a layer in which a hole transport layer made of a different kind of compound is laminated may be used.
- the same materials as those for the hole transport layer can be used, but porphyrin compounds (those disclosed in JP-A-63-29556965, etc.), aromatic tertiary amines, etc. Daggered product and styrylamine diagonal product (U.S. Pat. No. 4,127,412, JP-A-53-27033, JP-A-54-58445, JP-A-54-149634, and JP-A-54-149. 64299, 55-79450, 55-144250, 56-119132, 61-295558, 61-98353, 63-295695, etc.), especially It is preferable to use an aromatic tertiary amine compound.
- NPD 4,4,1-bis (N- (1naphthyl) N phenylamino) Biphenyl
- NPD 4,4,4 "-tris (N) in which three triamine units described in JP-A-4-308688 are connected in a star-burst configuration.
- MTDATA triphenylamine
- inorganic compounds such as p-type Si and p-type SiC can also be used as the material for the hole injection layer.
- the organic semiconductor layer is also a part of the hole injection layer, and is a layer that assists hole injection or electron injection into the light emitting layer, and preferably has a conductivity of 10 ′′ 10 S / cm or more.
- Examples of the material for such an organic semiconductor layer include thiophene-containing oligomers, conductive oligomers such as arylamine-containing oligomers disclosed in JP-A-8-193191, and conductive oligomers such as arylamine-dendrimers. Sex dendrimers and the like can be used.
- the hole injection layer may be formed by applying the above-mentioned compound to the hole injection layer, for example, by a vacuum evaporation method, a spin coating method, a casting method, It can be formed by a known method such as the LB method.
- the thickness of the hole injection layer is preferably set to 40 nm-100 nm to avoid damage during the formation of the anode. More preferably, it is 60-300 nm, and still more preferably 100-200 nm.
- the hole injection layer may be composed of one or more of the above-mentioned materials!
- a layer obtained by laminating a hole injection layer made of a compound different from the hole injection layer may be used.
- an electron transport layer can be provided between the cathode and the light emitting layer.
- the electron transporting layer is suitably selected in a film thickness of several nm- several m, 10 4 - is preferably having an electron mobility of 10- 5 cm 2 ZVs above 10 6 VZcm upon application of an electric field.
- a metal complex of 8-hydroxyquinoline or a derivative thereof is preferable.
- the metal complex of 8-hydroxyquinoline or a derivative thereof include a metal chelate toxinoid compound containing a chelate of oxine (generally, 8-quinolinol or 8-hydroxyquinoline).
- Alq described in the section of the light emitting material can be used as the electron injection layer.
- examples of the oxadiazole derivative include an electron transfer compound represented by the following formula.
- Ar 5, Ar 6, Ar 7, Ar 9, Ar 10, Ar 13 each represent a substituted or unsubstituted Ariru group may each also being the same or different.
- the Ar 8, Ar 11 and Ar 12 are set A substituted or unsubstituted arylene group, which may be the same or different,
- examples of the aryl group include a phenyl group, a biphenyl group, an anthral group, a perylenyl group, and a pyrenyl group.
- examples of the arylene group include a phenylene group, a naphthylene group, a biphenylene group, an anthracene group, a perylenylene group, a pyrenylene group and the like.
- examples of the substituent include an alkyl group having 110 carbon atoms, an alkoxy group having 110 carbon atoms, and a cyano group.
- the electron transfer conjugate is preferably a thin film-forming material.
- a 1 to A 3 are a nitrogen atom or a carbon atom.
- R is an aryl group having 6 to 60 carbon atoms which may have a substituent, A heteroaryl group having 3 to 60 carbon atoms, an alkyl group having 1 to 20 carbon atoms, a haloalkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, and n is an integer of 0 to 5 When n is an integer of 2 or more, a plurality of Rs are the same or different from each other!
- a plurality of adjacent R groups may be bonded to each other to form a substituted or unsubstituted carbocyclic aliphatic ring or a substituted or unsubstituted carbocyclic aromatic ring.
- Ar 14 is an aryl group having 6 to 60 carbon atoms which may have a substituent, or a heteroaryl group having 3 to 60 carbon atoms which may have a substituent.
- Ar 15 is a hydrogen atom, an alkyl group having 120 to 120 carbon atoms, a haloalkyl group having 112 carbon atoms, an alkoxy group having 112 carbon atoms, and an aryl group having 6 to 60 carbon atoms which may have a substituent. It is a heteroaryl group having 3-60 carbon atoms, having a group and a substituent.
- one of Ar "and Ar 15 may have a substituent and may have a condensed cyclic group having 10 to 60 carbon atoms, and may have a substituent and may have a heterocyclic group having 3 to 60 carbon atoms. It is a fused ring group.
- L 2 is a single bond, a condensed ring having 6 to 60 carbon atoms which may have a substituent, a heterocondensed ring having 3 to 60 carbon atoms which may have a substituent, It is a fluorene group which may have a group.
- HAr is a nitrogen-containing heterocyclic ring having 3 to 40 carbon atoms which may have a substituent
- L 3 is a single bond or 6 to 60 carbon atoms which may have a substituent.
- Ar 16 is a divalent aromatic hydrocarbon group having 6-60 carbon atoms having a substituent! /
- Ar 17 has a substituent! /, Or may be an aryl group having 6 to 60 carbon atoms, or
- Q 1 and Q 2 each independently represent a saturated or unsaturated hydrocarbon group having 1 to 6 carbon atoms, an alkoxy group, an alkoxy-alkoxy group, an alkyloxy group, a hydroxy group, substituted or unsubstituted And a substituted or unsubstituted heterocyclic ring or a structure in which Q 1 and Q 2 are combined to form a saturated or unsaturated ring.
- R 1 — R 4 are each independently hydrogen, halogen, Substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, alkoxy group, aryloxy group, perfluoroalkyl group, perfluoroalkoxy group, amino group, alkylcarbyl group, arylcarbyl group, alkoxy Carboxy group, aryloxy carboxy group, azo group, alkyl carboxy group, aryl carboxy group, alkoxy carboxy group, aryloxy carboxy group Xy, sulfyl, sulfol, sulfol, silyl, phorbamoyl, aryl, heterocyclic, alkenyl, alkynyl, nitro, formyl, nitroso, formyloxy Group, an isocyano group, a cyanate group, an isocyanate group, a thiosinate group, an isothiocyanate group or a cyano
- Q 3 and Q 4 each independently represent a saturated or unsaturated hydrocarbon group having 1 to 6 carbon atoms, an alkoxy group, an alkoxy-alkoxy group, an alkyl-oxy group, a substituted or unsubstituted aryl group.
- Group, substituted or unsubstituted heterocyclic ring or Q 3 and Q 4 R 5 to R 8 are each independently hydrogen, halogen, substituted or unsubstituted alkyl, alkoxy, aryloxy, or peralkyl groups having 1 to 6 carbon atoms.
- R 6 and R 7 are not simultaneously filled with an aliphatic group forming a ring, and when R 5 and R 8 are silyl groups, R 6 , R 7 , Q 3 and Q 4 are each Independently, in the case of a structure in which a benzene ring is fused with a monovalent hydrocarbon group having 1 to 6 carbon atoms or a hydrogen atom and R 5 and R 6 are linked, Q 3 and Q 4 are not an alkyl group or a phenyl group. )
- R 9 — R la and ⁇ each independently represent a hydrogen atom, a saturated or unsaturated hydrocarbon group, an aromatic group, a heterocyclic group, a substituted amino group, a substituted boryl group, an alkoxy group or an aryl group.
- Q 5 , Q 6 and Q 7 each independently represent a saturated or unsaturated hydrocarbon group, aromatic group, heterocyclic group, substituted amino group, alkoxy group or aryloxy group.
- the substituents of Q 7 and Q 8 may be bonded to each other to form a condensed ring.
- r is an integer of 1 to 3, and when r is 2 or more, Q 7 is different Is also good.
- Q 9 and Q 1C> each independently represent a ligand represented by the following formula
- L 4 represents a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted Ariru group, a substituted or unsubstituted heterocyclic group, oR 17 (R 1 7 is hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted a cycloalkyl group, a substituted or unsubstituted Or a substituted or unsubstituted heterocyclic group.) Or -0-Ga-QU (Q 12 ) (Q 11 and Q 12 have the same meanings as Q 9 and Q 10 ). Represents a ligand. ]
- rings A 4 and A 5 are a 6-membered aryl ring structure which may have a substituent and are mutually fused.
- the metal complex has a strong property as an n-type semiconductor and has a large electron injection ability. Furthermore, since the energy generated during complex formation is low, the bond between the metal and the ligand of the formed metal complex is strengthened, and the fluorescent quantum efficiency as a light emitting material is also increased.
- substituents on the ring A 4 and A 5 to form a ligand of the above formula a chlorine , Bromine, iodine, fluorine halogen, methyl, ethyl, propyl, butyl, sec-butyl, tert-butyl, pentyl, hexyl, heptyl, octyl, stearyl, trichloromethyl
- a substituted or unsubstituted alkyl group such as a group, a phenyl group, a naphthyl group, a 3-methylphenyl group, a 3-methoxyphenyl group, a 3-fluorophenyl group, a 3-trichloromethylphenyl group,
- substituted or unsubstituted aryl groups such as 3-trifluoromethylpropyl group, 3-tropyl group, methoxy group, n-butoxy group, tert-butoxy
- Substituted or unsubstituted arylthio, cyano, etc. such as p-trifluoro-thio, ptert-butyl-fluoro, 3-fluoro-fluoro-, pentafluoro-fluoro-, 3-trifluoromethyl-fluoro- Toro group, amino group, methylamino group, getylamino group, ethylamino group, getylamino group Mono- or di-substituted amino groups such as dipropylamino group, dibutylamino group, diphenylamino group, bis (acetoxymethyl) amino group, bis (acetoxityl) amino group, bisacetoxypropyl) amino group, bis (acetoxybutyl) amino group, etc.
- an insulator or an electron injecting layer having a semiconductor power can be provided between the cathode and the electron injecting layer or between the cathode and the light emitting layer.
- the insulator examples include an alkali metal chalcogenide, an alkaline earth metal chalcogenide, a halide of an alkali metal and a halide of an alkaline earth metal, aluminum oxide, aluminum nitride, titanium oxide, silicon oxide, germanium oxide, silicon nitride, It is preferable to use metal compounds such as boron nitride, molybdenum oxide, ruthenium oxide, and vanadium oxide alone or in combination. Of these metal compounds, alkali metal lucogenides and alkaline earth metal chalcogenides are preferred in terms of electron injection properties.
- Preferred alkali metal chalcogenides include Li0, LiO, NaS, NaSe and NaO.
- No. Preferred alkaline earth metal chalcogenides include CaO, BaO, SrO, BeO, BaS, and CaSe.
- Examples of the alkali metal halide include LiF, NaF, KF, LiCl, KC1, and NaCl.
- Examples of the alkaline earth metal halide include fluorides such as CaF, BaF, SrF, MgF and BeF, and fluorides.
- the semiconductor constituting the electron injection layer at least one selected from the group consisting of Ba, Ca, Sr, Yb, Al, Ga, In, Li, Na, Cd, Mg, Si, Ta, Sb and Zn
- the semiconductor constituting the electron injection layer at least one selected from the group consisting of Ba, Ca, Sr, Yb, Al, Ga, In, Li, Na, Cd, Mg, Si, Ta, Sb and Zn
- the electron injection layer is preferably microcrystalline or amorphous. This is because a uniform thin film is formed, so that pixel defects such as dark spots can be reduced.
- a reducing dopant can be contained in the region for transporting electrons or the interface region between the cathode and the organic layer.
- the reducing dopant is a substance capable of reducing an electron transporting compound. Therefore, various substances having a reducing property can be used. For example, alkali metals, alkaline earth metals, rare earth metals, alkali metal oxides, alkali metal halides, alkaline earth metal oxides, alkaline earth metal halides, rare earth metal oxides or Rare earth metal halides, alkali metal organic complexes, alkaline earth metal organic complexes, rare earth metal organic complexes, and the like can be suitably used.
- Preferred reducing dopants include alkalis such as Na (work function: 2.36 eV), K (work function: 2.28 eV), Rb (work function: 2.16 eV) and Cs (work function: 1.95 eV).
- metals include ruthenium earth metals such as metals, Ca (work function: 2.9 eV), Sr (work function: 2.0-2.5 eV), and Ba (work function: 2.52 eV).
- K, Rb and Cs are more preferably Rb or Cs, and even more preferably Cs. It is to be noted that combinations of these two or more types of alkali metals are also preferable.Cs-containing combinations, such as Cs and Na, Cs and K, Cs and Rb! /, Especially the combinations of Cs, Na and K Like! / ,.
- each organic layer forming the above-mentioned organic luminescent medium is not particularly limited. In general, if the thickness is too small, a defect such as a pinhole occurs. Usually, it is preferable to be in the range of several nm to 1 ⁇ m because it is necessary and the efficiency is deteriorated.
- the light reflecting layer one that reflects and transmits light generated in the organic light emitting medium layer and can form an optical resonator together with the light reflecting conductive layer described above is used.
- a metal, a dielectric multilayer film or the like can be used.
- Metals include Ag, Mg, Al, Au, Pt, Cu, Cr, Mo, W, Ta, Nb, Li, Mn, Ca, Yb, Ti, Ir, Be, Hf, Eu, Sr, Ba, Cs , Na and K or alloys of these metals.
- Al, Ag, Mg, Ce, Na, K, Cs, Li, Au, Pt, Cu, Ca and Ba are preferred.
- the dielectric multilayer film consists of a low refractive material and a high refractive material, This is a multi-layered film whose thickness (product of thickness) is one quarter of the wavelength of light.
- the low refractive material include SiOx, NaF, LiF, CaFx, AlFx, and MgFx.
- the high refractive index material include AlOx, MgOx, NdOx, TiOx, CeOx, PbOx, ZnS, CdS, and ZnSe. Note that a preferable range of x is 1 ⁇ ⁇ 3.
- the thickness of the light reflection layer is preferably 2 nm to 500 nm. If the thickness is less than 2 nm, the electron injecting property decreases when used as a cathode, which may reduce the luminous efficiency of the device or make it difficult to fabricate the device. If the thickness is more than 500 nm, the light transmittance decreases. Therefore, light extraction efficiency may be reduced.
- the thickness of the light reflecting layer is particularly preferably 5 nm to 300 nm.
- the transparent electrode examples include ITO, copper, silicon oxide tin (NESA), gold, silver, platinum, and copper.
- ITO indium zinc oxide
- NESA silicon oxide tin
- gold gold
- silver platinum
- copper indium zinc oxide
- IZO indium zinc oxide
- the sheet resistance of the transparent electrode layer is preferably 1000 ⁇ or less. More preferably, it is 800 ⁇ / port, even more preferably, 500 ⁇ / port.
- the transmittance of the electrode for light emission is greater than 10%. It is more preferably at least 30%, further preferably at least 50%.
- the thickness of the transparent electrode layer is preferably set to 5 nm-100 nm.
- a color conversion section and Z or a color filter may be formed on the transparent electrode layer.
- a flattening film may be formed between the color converter and the Z or color filter and the transparent electrode layer.
- the color conversion section has a function of absorbing light emitted from the organic EL element section and emitting fluorescence of a longer wavelength, and is capable of emitting fluorescent material alone or a combination of a fluorescent material and a transparent medium. Be configured.
- the color conversion unit is used to prevent a decrease in contrast due to external light, as will be described later. It may be configured in combination with a filter.
- an organic fluorescent dye an organic fluorescent pigment, a metal complex dye, an inorganic fluorescent material, or the like can be used.
- an inorganic transparent body such as glass, or a transparent resin such as a thermoplastic resin, a thermosetting resin, or a photocurable resin can be used.
- organic fluorescent dye a single type of organic fluorescent dye may be used, or a plurality of types of organic fluorescent dyes may be used according to a desired emission color.
- a rhodamine-based dye having a fluorescence peak in a wavelength region of 600 nm or more may be used.
- the content ratio of the organic fluorescent dye to the whole of the resin composition for a color conversion portion is in the range of 0.01 to 1% by weight. If the content is less than 0.01% by weight, it becomes difficult for the color conversion member to sufficiently absorb the excitation light, and the fluorescence intensity may be reduced. On the other hand, if the content is higher than 1% by weight, the distance between the organic fluorescent dye molecules in the color conversion member becomes too short, and the fluorescence intensity may decrease due to concentration quenching.
- Examples of the inorganic phosphor include an inorganic compound such as a metal compound that absorbs visible light and emits longer fluorescence than the absorbed light.
- an inorganic compound such as a metal compound that absorbs visible light and emits longer fluorescence than the absorbed light.
- organic substances such as long-chain alkyl groups and phosphoric acid are used to improve the dispersibility of the particles in the resin. May be used to modify the surface of the fine particles.
- metal chalcogenide compounds doped with transition metal ions ZnS, CdS, CdSe and other metal chalcogenide compounds include Eu 2+ , Eu 3+ , Ce 3+ , Tb 3 (C) doped with a transition metal ion that absorbs visible light such as + ), and (c) fine particles that absorb and emit visible light using a semiconductor bandgap (see Tables 2002-510866 and other documents).
- Semiconductor fine particles such as CdS, CdSe, CdTe, ZnS, ZnSe, and InP).
- the color conversion section is made of a fluorescent material and a resin
- the fluorescent material, the resin and an appropriate solvent are mixed, dispersed, or solubilized to form a liquid, and the liquid is spin-coated.
- a film is formed by a method such as roll coating or a casting method, and then patterned by photolithography into a desired pattern of a color conversion member, or patterned by screen printing or the like to form a desired pattern, thereby forming a color.
- a converter is formed.
- the thickness of the color conversion portion is not particularly limited as long as it does not interfere with the function of generating fluorescence while sufficiently absorbing the light emitted from the organic EL element, but is, for example, in the range of lOnm-lmm. Is more preferable to be a value in the range of 0.5 m-1 mm. More preferably, it is a value in the range of m-100 m.
- non-curable resin or light-curable resin can be used as the transparent resin for dispersing the fluorescent material.
- the transparent resin may be used singly or as a mixture of a plurality of types.
- a color conversion unit separated and arranged in a matrix is formed. Therefore, it is preferable to use a photosensitive resin to which a photolithography method can be applied as the transparent resin.
- the color filter is a film that transmits only light having a desired wavelength of light emitted from the element and blocks other light emission.
- the color conversion unit and the color filter are not particularly limited, and known ones can be used.
- the organic EL display device of the present invention Next, a method for manufacturing the organic EL display device of the present invention will be described.
- an example in which the organic EL display device of the third embodiment of the above-described embodiments is manufactured by a method including a wet etching method will be described.
- the other embodiments can be manufactured in the same manner as the present manufacturing method.
- the method of manufacturing the organic EL display device is not limited to the following method.
- FIGS. 5 and 6 show that the light-reflective conductive layer, the first inorganic compound layer, and the second inorganic
- FIG. 7 is a view illustrating a step of forming a compound layer
- FIG. 7 is a view illustrating a step of forming an organic light emitting medium layer and the like.
- the substrate manufacturing method shown in FIG. 5 is an example in which a film forming process (dry process) and an etching process (wet process) of each layer are alternately performed. Are performed collectively, and then an etching step is performed.
- dry process dry process
- etching process wet process
- the desired material is formed by photolithography or the like. Etch into a pattern of the shape shown in Fig. 5 (b).
- the light-reflective conductive layer 12 formed earlier is etched by selecting a material that is easily etched in the order of the light-reflective conductive layer, the first inorganic compound layer, and the second inorganic compound layer.
- the first inorganic compound layer 21 can be formed.
- the light reflection conductive layer 12, the first inorganic compound layer 21, and the second inorganic compound layer 31 are successively formed on the substrate 11 by sputtering. Further, a resist film 41 is formed on the second inorganic compound layer 31 (FIG. 6A).
- etching is performed under relatively weak conditions to form the light-reflective conductive layer 12 and the first inorganic compound layer 21 of the second organic EL element portion (FIG. 6 (e)).
- the substrate before the formation of the organic layer is obtained by exposing and removing the resist film 41c at the portion to be the third organic EL element portion (FIG. 6 (f)).
- an insulating film may be provided in a gap between the organic EL element portions so as to cover an edge portion of the inorganic compound layer of each organic EL element portion.
- an inorganic compound such as SiOx, SiNx, SiOxNy or an organic compound such as an acrylic photosensitive resin can be used.
- an organic luminescent medium layer 13 (FIG. 7 (a)) and a light-reflective layer 14 (FIG. 7 (b) ) And the transparent electrode layer 15 (FIG. 7 (c)) are formed in this order, whereby the organic EL display device 3 can be manufactured.
- each layer of the organic EL element is not particularly limited, and conventionally known methods such as sputtering, vacuum evaporation, molecular beam evaporation (MBE), dipping of a solution dissolved in a solvent, spin coating, casting, and It can be formed by a coating method such as a coating method and a roll coating method.
- conventionally known methods such as sputtering, vacuum evaporation, molecular beam evaporation (MBE), dipping of a solution dissolved in a solvent, spin coating, casting, and It can be formed by a coating method such as a coating method and a roll coating method.
- the organic EL display device shown in FIG. 3 was manufactured through the manufacturing process shown in FIG.
- a 300-nm thick light-reflective conductive layer was formed by sputtering Cr on a 25 mm X 75 mm X I. 1 mm thick glass substrate (see Fig. 5 (a)).
- This substrate was etched with a mixed solution of cerium nitrate ammonium salt and hydrogen peroxide to obtain a patterned substrate having a light-reflective conductive layer (see FIG. 5 (b)).
- the substrate with the light-reflective conductive layer was mounted on a substrate holder of a vacuum evaporation apparatus, and ITO was sputtered to form a first 145 nm inorganic compound layer (see FIG. 5 (c)).
- the sputtering atmosphere was performed by adding hydrogen at 8% (partial pressure) of the sputtering pressure. Thereafter, the substrate was etched with an oxalic acid aqueous solution (oxalic acid: 3.5 wt%) to obtain a patterned substrate with a first inorganic compound layer (see FIG. 5D).
- this substrate was heat-treated in a heating furnace at 230 ° C. for 30 minutes to crystallize the ITO, and then the substrate was mounted on a substrate holder, and then a non-crystalline inorganic oxide, IZO (oxygen oxide) was used.
- Zinc (containing 10 wt%) was formed by sputtering to form a second inorganic compound layer having a thickness of 45 nm (see FIG. 5 (e)).
- This substrate was etched with an aqueous oxalic acid solution (oxalic acid: 3.5 wt%) to obtain a substrate on which a patterned second inorganic compound layer was formed. (See Fig. 5 (f))
- an organic light emitting medium layer was formed as follows.
- TPD232 film N, N'bis (N, N, diphenyl 4-aminophenyl) N, N-diphenyl 4,4,4
- TPD232 film A diamino-1,1,1-biphenyl film (hereinafter abbreviated as “TPD232 film”) was laminated to a thickness of 35 nm. This functions as a hole injection layer.
- NPD film 4,4, -bis [? ⁇ — (1-naphthyl)-? ⁇ -Fe-l-amino] biphenyl film (hereinafter abbreviated as “NPD film”) having a film thickness of lOnm is formed.
- NPD film functions as a hole transport layer.
- compound (HI) and compound (B1) were deposited at a weight ratio of 40: 1 to form a film having a thickness of 5 nm. This functions as a blue light emitting layer.
- compound (HI) and compound (Ol) were deposited at a weight ratio of 37.5: 1 to form a film having a thickness of 15 nm. This functions as an orange light emitting layer.
- Alq 8-quinolinol aluminum
- Li Li source: sess getter
- IZO was formed to a thickness of 100 nm on the light reflecting layer. This functions as a transparent electrode layer.
- the organic EL device portion (the organic EL device portion 10 shown in FIG. 3) where the optical distance of the resonance portion was the shortest (151 nm), the maximum emission wavelength was 470 nm, and blue light was emitted.
- the organic EL element section (the organic EL element section 20 shown in FIG. 3) in which the optical distance of the resonance section is an intermediate length (433 nm) has a maximum emission wavelength of 550 nm and emits green light.
- the optical distance of the resonance part is the longest! (522 nm)
- the maximum emission wavelength was 620 nm, and red light was emitted.
- the organic EL display device of the present invention can emit multicolor light and can also perform full-color display.
- An organic EL display was produced in the same manner as in Example 1 except that the first inorganic compound layer and the second inorganic compound layer were not formed on Cr, which was a light reflection conductive layer, in Example 1.
- the device was fabricated.
- the film thickness between the Cr layer as the light reflection conductive layer and the Mg: Ag layer as the light reflection layer was 80 nm (optical thickness: 151 nm).
- the device emits blue light with a maximum emission wavelength of 470 nm Luminescence was obtained.
- Example 2 In the same manner as in Example 1, a substrate (lower electrode substrate) on which the layers up to the second inorganic compound layer were formed was produced (FIGS. 5A to 5F).
- HI film a hole injecting material and the following compound (HT)
- HI HT film the following compound (BH) as a host of a luminescent material
- BD blue luminescent dopant
- GD green luminescent dopant
- RD red luminescent dopant
- LiF electron injection material
- Mg and Ag light reflection layer
- hole injection auxiliary material An IZO target was attached to another sputtering tank as a cathode extraction
- IZO was sputtered to lnm as a hole injection auxiliary layer so as to cover the lower electrode.
- an HI film functioning as a hole injection layer was deposited to a thickness of 25 nm.
- an HT film functioning as a hole transport layer was deposited to a thickness of lOnm.
- compound BH and compound BD were co-deposited with a film thickness lOnm so as to have a weight ratio of 10: 0.5 as a blue light emitting layer.
- compound BH and compound GD were co-deposited with a film thickness lOnm so as to have a weight ratio of 10: 0.8.
- compound BH and compound RD were co-adhered at a thickness of 20 nm so as to have a weight ratio of 20: 0.5.
- an Alq film was deposited with a film thickness of lOnm as an electron transport layer. Thereafter, LiF was deposited to a thickness of lnm as an electron injection layer, and on this film, Ag and Mg were deposited as a light reflection layer (cathode) at a deposition rate ratio of 1: 9 by lOnm deposition. Furthermore, an organic EL display device was fabricated in which three layers of light emitting layers were formed by forming a 90 nm ⁇ film of IZO as a transparent electrode layer.
- the thickness between the Cr layer as the light reflecting conductive layer and the Mg: Ag layer as the light reflecting layer was 85 nm (optical thickness: 160 nm).
- a voltage of 7.2 V was applied between the light-reflective conductive layer and the transparent electrode of this organic EL display device, and the emission spectrum of each organic EL element was measured.
- the optical distance of the resonance part was the shortest!
- the maximum emission wavelength was 454 nm
- the luminous efficiency was 4.9 cd / A.
- emitted blue light of chromaticity (0.21, 0.26).
- the organic EL element section (the organic EL element section 20 shown in Fig. 3) where the optical distance of the resonance section is an intermediate length (442 nm), the maximum emission wavelength is 520 nm, and the emission efficiency is 6.2 cd / A, color It emitted green light at a temperature of (0.23, 0.48).
- the optical distance of the resonance part is the longest! (531 nm)
- the maximum emission wavelength is 588 nm
- the luminous efficiency is 3.6 cd / A
- the chromaticity 0.41, 0.32).
- a light-shielding layer pattern was formed on a glass substrate having a thickness of 25 mm X 75 mm X I. 1 mm.
- the light shielding layer 50 nm of chromium oxide and 300 nm of chromium were sequentially laminated by sputtering.
- a positive resist (HPR204: manufactured by Fuji Ohlin) was formed on the light shielding layer by spin coating. Subsequently, the resist film is exposed to ultraviolet light via a photomask. Then, it was developed with a developing solution of TMAH (tetramethylammonium hydroxide), and was betad at 130 ° C. Next, the exposed chromium layer and the oxidized chromium layer were etched with a chromium etchant having a cerium nitrate ammonium Z-perchloric acid aqueous solution.
- TMAH tetramethylammonium hydroxide
- the resist is removed with a stripping solution containing ethanolamine as the main component (N303: manufactured by Nagase Sangyo), and a 30 ⁇ m-wide A lattice-like light-shielding layer pattern was obtained.
- N303 manufactured by Nagase Sangyo
- V259 manufactured by Nippon Steel Chemical Co., Ltd.
- V259 was spin-coated on a supporting substrate to form a film.
- the substrate was exposed to ultraviolet light via a photomask while being positioned with respect to the light-shielding layer.
- beta was performed at 200 ° C. to form a color filter layer pattern for blue (thickness: 1.5 m).
- a pigment-based green color filter material (CG-8510L, manufactured by Fuji Film Arch) was spin-coated, and the photomask used for blue was replaced with a blue photomask. It was shifted by 100 m from the position of the color filter layer pattern, and was exposed to ultraviolet light through this photomask. After that, it was betad at 200 ° C to form a green color filter layer pattern (1.0 m thick).
- red (R) color filter layer pattern As a material for the red (R) color filter layer pattern, a pigment-based red color filter material (CRY-S840B, manufactured by Fuji Film Arch) was spin-coated, and the photomask used for the blue color was replaced with a blue-colored photomask. It was shifted by 200 ⁇ m pitch from the position of the color filter layer pattern, and was exposed to ultraviolet light through this photomask. After that, beta treatment was performed at 200 ° C to obtain a red color filter layer pattern (thickness: 1.2 m). In this way, a color filter substrate having three colors was produced.
- CY-S840B pigment-based red color filter material
- a liquid silicone rubber (XE14-128, manufactured by Toshiba Silicone Co., Ltd.) is applied on the color filter substrate produced by the above method using a spin coater, and the organic EL element substrate is placed thereon.
- An organic EL display device in which a color filter was formed by bonding together with the alignment mark was manufactured.
- a voltage of 7.2 V was applied between the light-reflective conductive layer and the transparent electrode of this organic EL display device, and the emission spectrum of each organic EL element was measured.
- the optical distance of the resonance section was the shortest! In the (160 nm) organic EL element section (the organic EL element section 10 shown in FIG. 3), the maximum emission wavelength was 453 nm, and the luminous efficiency was 0.98 cd / A. And emitted blue light of chromaticity (0.1, 0.09).
- the organic EL element section (the organic EL element section 20 shown in Fig. 3) where the optical distance of the resonance section is an intermediate length (442 nm), the maximum emission wavelength is 520 nm, and the emission efficiency is 4.4 cd / A, color Degree (0 20, 0.63).
- the optical distance of the resonance part is the longest! (531 nm)
- the maximum emission wavelength is 599 nm
- the luminous efficiency is 1.36 cd / A
- the chromaticity 0.63, 0.36
- the organic electroluminescent display device of the present invention can be used for display screens of various display devices such as a consumer TV, a large-sized display, and a mobile phone display.
Abstract
Description
Claims
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US10/591,688 US8106582B2 (en) | 2004-03-05 | 2005-02-18 | Organic electroluminescence display device |
EP05710391A EP1722604A1 (en) | 2004-03-05 | 2005-02-18 | Organic electroluminescence display device |
KR1020067017904A KR101106920B1 (ko) | 2004-03-05 | 2005-02-18 | 유기 전계 발광 표시 장치 |
JP2006510635A JP4739185B2 (ja) | 2004-03-05 | 2005-02-18 | 有機エレクトロルミネッセンス表示装置 |
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JP3555759B2 (ja) | 2001-06-15 | 2004-08-18 | ソニー株式会社 | 表示装置 |
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JP4475942B2 (ja) * | 2003-12-26 | 2010-06-09 | 三洋電機株式会社 | 表示装置及びその製造方法 |
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2005
- 2005-02-18 EP EP05710391A patent/EP1722604A1/en not_active Withdrawn
- 2005-02-18 WO PCT/JP2005/002558 patent/WO2005086539A1/ja not_active Application Discontinuation
- 2005-02-18 KR KR1020067017904A patent/KR101106920B1/ko active IP Right Grant
- 2005-02-18 US US10/591,688 patent/US8106582B2/en active Active
- 2005-02-18 JP JP2006510635A patent/JP4739185B2/ja active Active
- 2005-02-24 TW TW094105638A patent/TW200537979A/zh unknown
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WO2006103916A1 (ja) * | 2005-03-25 | 2006-10-05 | Idemitsu Kosan Co., Ltd. | 有機エレクトロルミネッセンス素子 |
US8102111B2 (en) | 2005-07-15 | 2012-01-24 | Seiko Epson Corporation | Electroluminescence device, method of manufacturing electroluminescence device, and electronic apparatus |
JP2007026852A (ja) * | 2005-07-15 | 2007-02-01 | Seiko Epson Corp | 有機エレクトロルミネッセンス装置、有機エレクトロルミネッセンス装置の製造方法、及び電子機器 |
JP4548253B2 (ja) * | 2005-07-15 | 2010-09-22 | セイコーエプソン株式会社 | 有機エレクトロルミネッセンス装置、及び有機エレクトロルミネッセンス装置の製造方法 |
WO2007123061A1 (ja) * | 2006-04-20 | 2007-11-01 | Idemitsu Kosan Co., Ltd. | 有機発光素子 |
KR100972895B1 (ko) * | 2006-04-20 | 2010-07-28 | 이데미쓰 고산 가부시키가이샤 | 유기 발광 소자 |
KR100787452B1 (ko) | 2006-07-13 | 2007-12-26 | 삼성에스디아이 주식회사 | 유기 발광 표시소자 |
US20090174323A1 (en) * | 2006-07-19 | 2009-07-09 | Koninklijke Philips Electronics N.V. | Highly doped electro-optically active organic diode with short protection layer |
US8692460B2 (en) * | 2006-07-19 | 2014-04-08 | Koninklijke Philips N.V. | Highly doped electro-optically active organic diode with short protection layer |
JP2011506617A (ja) * | 2007-06-01 | 2011-03-03 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | 緑色発光材料 |
WO2009122885A1 (ja) * | 2008-04-02 | 2009-10-08 | 富士電機ホールディングス株式会社 | 有機el素子の製造方法 |
US8531100B2 (en) | 2008-12-22 | 2013-09-10 | E I Du Pont De Nemours And Company | Deuterated compounds for luminescent applications |
JP2012044154A (ja) * | 2010-08-23 | 2012-03-01 | Samsung Mobile Display Co Ltd | 有機発光表示装置 |
JP2012182127A (ja) * | 2011-02-11 | 2012-09-20 | Semiconductor Energy Lab Co Ltd | 発光装置、及び発光装置を用いた電子機器 |
JP2016195136A (ja) * | 2011-02-11 | 2016-11-17 | 株式会社半導体エネルギー研究所 | 発光装置 |
WO2013039027A1 (ja) * | 2011-09-14 | 2013-03-21 | シャープ株式会社 | 表示装置、電子機器および照明装置 |
WO2013047331A1 (ja) * | 2011-09-26 | 2013-04-04 | シャープ株式会社 | 表示装置の製造方法 |
JPWO2013047331A1 (ja) * | 2011-09-26 | 2015-03-26 | シャープ株式会社 | 表示装置の製造方法 |
WO2013047457A1 (ja) * | 2011-09-30 | 2013-04-04 | シャープ株式会社 | 表示装置の製造方法および表示装置 |
Also Published As
Publication number | Publication date |
---|---|
US8106582B2 (en) | 2012-01-31 |
KR20060135795A (ko) | 2006-12-29 |
US20070200123A1 (en) | 2007-08-30 |
KR101106920B1 (ko) | 2012-01-25 |
EP1722604A1 (en) | 2006-11-15 |
JP4739185B2 (ja) | 2011-08-03 |
JPWO2005086539A1 (ja) | 2008-01-24 |
TW200537979A (en) | 2005-11-16 |
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