WO2010143431A1 - 有機el薄膜用インク組成物および有機el素子 - Google Patents
有機el薄膜用インク組成物および有機el素子 Download PDFInfo
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- WO2010143431A1 WO2010143431A1 PCT/JP2010/003863 JP2010003863W WO2010143431A1 WO 2010143431 A1 WO2010143431 A1 WO 2010143431A1 JP 2010003863 W JP2010003863 W JP 2010003863W WO 2010143431 A1 WO2010143431 A1 WO 2010143431A1
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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
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
- C09K19/2007—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers the chain containing -COO- or -OCO- groups
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/36—Inkjet printing inks based on non-aqueous solvents
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/50—Sympathetic, colour changing or similar inks
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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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
- H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
- H10K85/114—Poly-phenylenevinylene; Derivatives thereof
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
- H10K85/115—Polyfluorene; Derivatives thereof
Definitions
- the present invention relates to an ink composition for organic EL thin film (organic EL material-containing solution), an organic EL thin film forming method, an organic EL thin film, and an organic EL element.
- organic EL material-containing solution used for forming an organic thin film constituting an organic EL element by a coating method.
- An organic electroluminescence (EL) element is an element that utilizes the principle that an organic material emits light by recombination of holes injected from an anode and electrons injected from a cathode by applying an electric field.
- EL organic electroluminescence
- the element structure of the organic EL element is a two-layer type of a hole transport (injection) layer and an electron transport light emitting layer, or a hole transport (injection) layer, a light emitting layer, an electron transport (injection) layer.
- the three-layer structure is well known. In such a stacked structure element, in order to increase the recombination efficiency of injected holes and electrons, various devices have been devised in the element structure and the formation method.
- organic EL materials polymer materials and low-molecular materials are known, but low-molecular organic EL materials are being developed because of the ease of synthesis and high-purity purification by sublimation purification. Furthermore, organic EL materials that are very excellent in terms of efficiency, lifetime, and color purity are reported from among low-molecular organic EL materials, and their practical application is progressing.
- a vacuum deposition method is adopted, and a high performance organic EL device can be obtained by sublimation with good thermal stability and vapor deposition on the substrate. ing.
- the vapor deposition method has a problem that a high vacuum facility and a complicated manufacturing process are required, and film formation by a wet method such as spin coating or ink jet is desired.
- Non-Patent Document 1 Non-Patent Document 2
- Non-Patent Document 2 Non-Patent Document 2
- the alcohol solvent added to increase the solution viscosity is a poor solvent for the polymer organic EL material, and there is a problem that the solubility is impaired.
- the alcohol is used as the poor solvent, so that the solid component is precipitated over time and the pot life is short. It was.
- Alcohol solvents are known to form addition complexes by side reactions with complexes in the excited state, which causes changes in spectral shape and mobility, leading to deterioration of device characteristics.
- An object of the present invention is to provide an organic EL material ink composition that can be widely applied to various coating methods while solving the above-mentioned problems and maintaining high-efficiency and long-life light emission characteristics.
- an object of the present invention is to provide a high-viscosity organic EL ink composition that can be produced by an inexpensive printing technique other than the inkjet method.
- an object is to provide an organic EL element having low-cost, high-efficiency, and long-life emission characteristics, which is produced using the ink.
- the present invention is an ink composition for organic EL thin film, An organic EL material; A liquid crystalline compound having a band gap of 3.5 eV or more; A solvent comprising an organic compound; It is characterized by having.
- the organic EL thin film ink composition of the present invention contains a liquid crystal compound. Since the liquid crystal molecules constituting the liquid crystalline compound have a mesogenic portion having a rigid structure, the viscosity of the ink composition can be improved. In addition, since the liquid crystal molecules have a spacer portion, high compatibility with the organic EL material and other solvents can be obtained. Thereby, it is applicable to coating methods other than the inkjet method, and a stable and highly viscous organic EL ink composition can be obtained.
- the liquid crystal compound has a band gap of 3.5 eV or more, it does not affect the light emission efficiency of the light emitting material having a band gap of 3.0 eV or less. Therefore, the light emission efficiency can be maintained despite the addition of the liquid crystal compound.
- the liquid crystalline compound preferably does not contain a functional group such as a —CN group, an —OH group, and a —F group.
- This ink composition for forming an organic EL thin film does not contain an —OH group that forms an addition complex by a side reaction with a complex in an excited state, and therefore, life characteristics can be maintained despite the addition of liquid crystal.
- life characteristics can be maintained despite the addition of a liquid crystalline compound.
- liquid crystalline compound preferably has a molecular dipole moment of 4.0 debye or less.
- liquid crystalline compound is preferably a cholesteric liquid crystal.
- the organic EL element according to the present invention is formed using the ink composition for forming an organic EL thin film, and has a light emitting layer containing an organic EL material and a liquid crystalline compound.
- the organic EL device includes a pair of an anode and a cathode, A light emitting layer sandwiched between the anode and the cathode, comprising an organic EL material and a liquid crystal compound having a band gap of 3.5 eV or more; Is provided.
- the liquid crystalline compound does not contain a functional group such as —CN group, —OH group, and —F group.
- the liquid crystalline compound preferably has a molecular dipole moment of 4.0 debye or less.
- the liquid crystalline compound is preferably a cholesteric liquid crystal.
- the ink composition for an organic EL thin film of the present invention since a liquid crystalline compound is used as an additive, a high viscosity is obtained, and a coating method is performed while maintaining high-efficiency and long-life emission characteristics.
- Ink compositions for organic EL thin films that can be widely applied to the present invention can be provided.
- a high viscosity can be obtained, it is possible to provide a highly viscous ink composition for an organic EL thin film that can be produced by an inexpensive printing technique other than the inkjet method.
- PV polyphenylene vinylene
- PFO polyfluorene
- BBOP 4-N-octyloxyphenyl
- CC cholesterol N-caprate
- the ink composition for organic EL thin film (organic EL material-containing solution) according to Embodiment 1 of the present invention includes an organic EL material, a liquid crystal compound, and a solvent. Since this organic EL ink composition contains a liquid crystalline compound, a high viscosity can be obtained.
- the organic EL material-containing solution contains a low molecular light emitting material or a polymer light emitting material that emits fluorescence or phosphorescence.
- low molecular weight light emitting material examples include aromatic dimethylidene compounds such as 4,4′-bis (2,2′-diphenylvinyl) -biphenyl (DPVBi), 5-methyl-2- [2- [4- (5 Oxadiazole compounds such as -methyl-2-benzoxazolyl) phenyl] vinyl] benzoxazole, 3- (4-biphenylyl) -4-phenyl-5-t-butylphenyl-1,2,4-triazole Fluorescence of triazole derivatives such as (TAZ), styrylbenzene compounds such as 1,4-bis (2-methylstyryl) benzene, thiopyrazine dioxide derivatives, benzoquinone derivatives, naphthoquinone derivatives, anthraquinone derivatives, diphenoquinone derivatives, fluorenone derivatives, etc.
- Aluminum such as
- polymer light emitting material examples include poly (2-decyloxy-1,4-phenylene) (DO-PPP), poly [2,5-bis- [2- (N, N, N-triethylammonium) ethoxy]. -1,4-phenyl-alt-1,4-phenyllene] dibromide (PPP-NEt3 +), poly [2- (2′-ethylhexyloxy) -5-methoxy-1,4-phenylenevinylene] (MEH— PPV), poly [5-methoxy- (2-propanoxysulfonide) -1,4-phenylene vinylene] (MPS-PPV), poly [2,5-bis- (hexyloxy) -1,4-phenylene -(1-cyanovinylene)] (CN-PPV) and other polyphenylene vinylene derivatives, poly (9,9-dioctylfluorene) (PDAF), poly (9,9-dio Tyl
- polymer light-emitting material examples include poly (2-methoxy-5- (2-ethylhexyloxy) -1,4-phenylene vinylene (abbreviation PPV-MEH, FIG. 1), poly (9,9-bis -(2-Ethylhexyl) -9H-fluorene 2,7-diyl (abbreviation: PEHF, FIG. 2).
- a material that becomes a carrier transporting material or a guest compound or a host compound of the light emitting material may be added to the organic EL material-containing solution.
- the carrier transporting material for example, a low molecular carrier transporting material that can be coated and formed without the need for a binder is preferable.
- a low molecular carrier transportable material it is more preferable that it has high amorphousness and heat resistance, and is easy to synthesize and purify.
- the carrier transporting material may have a hole transporting property.
- the guest compound of the light-emitting material or the host compound of the light-emitting layer includes low molecular weight materials such as coumarin derivatives, anthracene derivatives, naphthacene derivatives, and pentacene derivatives.
- the ink composition for organic EL thin film (organic EL material-containing solution) of the present invention further comprises a liquid crystalline compound.
- a liquid crystalline compound such as a nematic liquid crystal, a cholesteric liquid crystal, a discotic liquid crystal, or a smectic liquid crystal is selected from one type or two or more types. Moreover, you may use the liquid crystal compound which consists of a single compound or a mixture. Further, as the liquid crystalline compound, either a low molecular liquid crystalline compound or a high molecular liquid crystalline compound may be used.
- preferable liquid crystal compounds for example, cholesterol n-caprate (abbreviation CC, FIG. 3) and 4-N-octyloxyphenyl 4-butylbenzoate (abbreviation BBOP, FIG. 4) can be given.
- the liquid crystal molecules constituting the liquid crystal compound have a mesogenic portion having a rigid structure and a spacer portion. Since the mesogen portion having this rigid structure exists, the viscosity of the ink composition can be improved. In addition, since the spacer portion exists, high compatibility with the organic EL material and other solvents can be obtained. Thereby, it is applicable also to coating methods other than the inkjet method, and the stable and highly viscous ink composition for organic EL thin films can be obtained.
- the liquid crystalline compound is preferably a liquid crystalline compound that does not contain a —CN group, —OH group, or —F group.
- these liquid crystalline compounds do not contain an —OH group that forms an addition complex by a side reaction with the complex in the excited state. Life characteristics can be maintained.
- the liquid crystal compound is preferably a liquid crystal compound having a band gap of 3.5 eV or more.
- the band gap is the difference between the ionization potential and electron affinity of the liquid crystalline compound. The ionization potential and electron affinity are determined based on the vacuum level.
- the ionization potential is defined by the energy required to emit electrons at the HOMO (highest occupied molecular orbital) level of the liquid crystal compound to the vacuum level, and the electron affinity is the LUMO of the substance at the vacuum level. It is defined as the energy that falls to the (lowest empty molecular orbital) level and stabilizes.
- the liquid crystal compound is preferably a cholesteric liquid crystal.
- a liquid crystalline compound composed of cholesteric liquid crystal By using a liquid crystalline compound composed of cholesteric liquid crystal, the viscosity can be increased more efficiently as shown in the experimental examples described later.
- the liquid crystalline compound preferably has a molecular dipole moment of 4.0 debye or less.
- the dipole moment of n-caprate cholesterol (abbreviation CC) is 2.2504 debye
- the dipole moment of 4-N-octyloxyphenyl 4-butylbenzoate (abbreviation BBOP) is 3 9104 debye.
- the concentration range of the liquid crystal compound is preferably in the range of 0.5 to 40% by weight in the whole organic EL material-containing solution, and 1 to 30% by weight from the viewpoint of thickening effect and avoiding the influence of high resistance.
- the range of is more preferable.
- the addition concentration is further selected from the above range depending on the type of liquid crystal compound to be added, the type of solvent, and the type of solute.
- the solvent is selected from an aromatic solvent, a hydrocarbon solvent, a halogen solvent, an ester solvent, and an ether solvent.
- An aromatic solvent is preferred.
- Aromatic solvents include benzene, toluene, xylene, mesitylene, ethylbenzene, linear or branched propylbenzene, butylbenzene, pentylbenzene, hexylbenzene, nonylbenzene, decylbenzene, undecylbenzene, dodecylbenzene, tetralin, cyclohexyl Examples include benzene.
- halogen-based hydrocarbon solvent examples include dichloromethane, dichloroethane, chloroform, carbon tetrachloride, tetrachloroethane, trichloroethane, chlorobenzene, dichlorobenzene, chlorotoluene and the like.
- ether solvent examples include dibutyl ether, tetrahydrofuran, dioxane, anisole, 3-phenoxytoluene and the like.
- hydrocarbon solvent a straight chain, branched chain saturated or unsaturated hydrocarbon solvent having 6 or more carbon atoms such as hexane, heptane, octane, nonane, decane, and undecane is selected.
- the ester solvent may be ethyl acetate, butyl acetate, amyl acetate, octyl acetate or the like.
- An inexpensive organic EL device can be obtained by using an ink composition for an organic EL thin film to which a liquid crystal compound as described above is added and producing it by letterpress printing or die coating.
- an aromatic solvent such as cyclohexylbenzene (CHB) and 4-methoxytoluene (MT) was used.
- liquid crystalline compounds liquid crystal additives in Table 1 include cholesterol N-caprate (CC, Tokyo Kasei, FIG. 3), 4-N-octyloxyphenyl 4-butylbenzoate (BBOP, Tokyo Kasei, FIG. 4). It was used.
- Ink preparation (Experimental Examples 1 to 7) was performed as follows. That is, a luminescent material was put in a sample bottle, and a liquid crystal additive was added as a solvent and a viscosity adjusting liquid to prepare an ink.
- the inks of Experimental Examples 1 to 7 were obtained by changing the type and concentration of each material as the ink adjustment conditions. Table 1 below summarizes the adjustment conditions and evaluation results for each ink.
- the ink adjustment conditions are each kind of luminescent material, solvent, liquid crystal additive and solid content concentration (% by weight), and the evaluation results are solubility (O: no insoluble matter visually, x: insoluble matter visually) ) And viscosity (cps).
- the viscosity (cps) was measured using a rheometer (manufactured by TA Instruments: AR-G2) at the shear rate of 500 s ⁇ 1 and the temperature of 20 ° C. as measurement conditions.
- the present invention provides an ink composition for forming an organic EL thin film excellent in process suitability, and can be used for the production of an organic EL device having low-cost, high-efficiency, and long-life emission characteristics.
Abstract
Description
有機EL材料と、
バンドギャップが3.5eV以上である液晶性化合物と、
有機化合物からなる溶媒と、
を有することを特徴とする。
前記陽極及び陰極の間に挟まれており、有機EL材料と、バンドギャップが3.5eV以上である液晶性化合物と、を含む発光層と、
を備える。
本発明の実施の形態1に係る有機EL薄膜用インク組成物(有機EL材料含有溶液)は、有機EL材料と、液晶性化合物と、溶媒とを含む。この有機ELインク組成物では、液晶性化合物を含むので高粘度が得られる。
<発光材料>
有機EL材料含有溶液は、蛍光発光、或いは、りん光発光する低分子発光材料もしくは高分子発光材料を含む。
また、有機EL材料含有溶液には、上記発光材料の発光効率を向上させるために、キャリア輸送性材料や、上記発光材料のゲスト化合物またはホスト化合物となる材料を添加してもよい。
キャリア輸送性材料としては、例えば、バインダーを必要とせずに塗布成膜可能な低分子キャリア輸送性材料が好ましい。また、低分子キャリア輸送性材料としては、高いアモルファス性と耐熱性を有し、且つ、合成、精製が容易であることがより好ましい。なお、キャリア輸送性材料は、正孔輸送性を有してもよい。
発光材料のゲスト化合物または発光層のホスト化合物としては、クマリン誘導体、アントラセン誘導体、ナフタセン誘導体、ペンタセン誘導体などの低分子系材料が含まれる。
本発明の有機EL薄膜用インク組成物(有機EL材料含有溶液)は、さらに液晶性化合物を有することを特徴とする。液晶性化合物としては、ネマチック液晶、コレステリック液晶、ディスコティック液晶、スメクチック液晶などの液晶性化合物が1種または2種以上から選択される。また、液晶性化合物は、単一化合物または混合物からなるものを用いてもよい。さらに、液晶性化合物として低分子液晶性化合物、又は、高分子液晶性化合物のいずれを用いてもよい。好ましい液晶性化合物としては、例えば、n-カプリン酸コレステロール(略称CC、図3)、4-ブチル安息香酸4-N-オクチルオキシフェニル(略称BBOP、図4)が挙げられる。
また、溶媒としては、芳香族系溶媒、炭化水素系溶媒、ハロゲン系溶媒、エステル系溶媒、エーテル系溶媒のうちから選択される。好ましくは芳香族系溶媒である。
芳香族系溶媒としては、ベンゼン、トルエン、キシレン、メシチレン、エチルベンゼン、直鎖または分岐のプロピルベンゼン、ブチルベンゼン、ペンチルベンゼン、ヘキシルベンゼン、ノニルベンゼン、デシルベンゼン、ウンデシルベンゼン、ドデシルベンゼン、テトラリン、シクロヘキシルベンゼンなどが挙げられる。
ハロゲン系溶媒としてのハロゲン系炭化水素系溶媒としては、ジクロロメタン、ジクロロエタン、クロロホルム、四塩化炭素、テトラクロロエタン、トリクロロエタン、クロロベンゼン、ジクロロベンゼン、クロロトルエンなどが例として挙げられる。
エーテル系溶媒としては、ジブチルエーテル、テトラヒドロフラン、ジオキサン、アニソール、3-フェノキシトルエンなどが例として挙げられる。
炭化水素系溶媒としては、ヘキサン、ヘプタン、オクタン、ノナン、デカン、ウンデカンなど炭素数6以上の直鎖、分岐鎖の飽和、不飽和の炭化水素系溶媒が選択される。
エステル系溶媒としては、酢酸エチル、酢酸ブチル、酢酸アミル、酢酸オクチルなどでもよい。
有機EL材料含有溶液としてのインクを実際に調製した実験例1~7の例を示す。
(実験例1~7)
実験例1~7においては、発光材料として、ポリ(2-メトキシ-5-(2-エチルヘキシロキシ)-1,4-フェニレンビニレン):(略称:PPV-MEH、アルドリッチ製、図1)、ポリ(9,9-ビス-(2-エチルヘキシル)-9H-フルオレン-2,7-ジイル、図2):(略称:PEHF、アルドリッチ製)を用いた。なお、上記PPV-MEH及びPEHFは本発明における発光材料として好ましい化合物である。溶媒としてはシクロヘキシルベンゼン(CHB)および4-メトキシトルエン(MT)などの芳香族系溶媒を用いた。液晶性化合物(表1では液晶添加物)としては、N-カプリン酸コレステロール(CC、東京化成、図3)、4-ブチル安息香酸4-N-オクチルオキシフェニル(BBOP、東京化成、図4)を使用した。
すなわち、サンプル瓶に発光材料を入れ、溶媒および粘度調整液として液晶添加剤を加えてインクを調整した。この場合に、インクの調整条件として、各材料の種類及び濃度等を変えて実験例1~7のインクを得た。下記の表1に各インクの調整条件、及び、評価結果をまとめた。インクの調整条件は、発光材料、溶媒、液晶添加剤の各種類と固形分濃度(重量%)であり、評価結果は、溶解性(○:目視で不溶物なし、×:目視で不溶物あり)と粘度(cps)である。
Claims (9)
- 有機EL薄膜用インク組成物であって、
有機EL材料と、
バンドギャップが3.5eV以上である液晶性化合物と、
有機化合物からなる溶媒と、
を有することを特徴とする有機EL薄膜用インク組成物。 - 前記液晶性化合物は、-CN基、-OH基及び-F基の官能基を含まないことを特徴とする請求項1に記載の有機EL薄膜用インク組成物。
- 前記液晶性化合物は、分子の双極子モーメントが4.0debye以下であることを特徴とする請求項1に記載の有機EL薄膜用インク組成物。
- 前記液晶性化合物は、コレステリック液晶であることを特徴とする請求項1に記載の有機EL薄膜用インク組成物。
- 請求項1に記載の有機EL薄膜用インク組成物を用いて形成され、有機EL材料と、液晶性化合物と、を含む発光層を有することを特徴とする有機EL素子。
- 一対の陽極及び陰極と、
前記陽極及び陰極の間に挟まれており、有機EL材料と、バンドギャップが3.5eV以上である液晶性化合物と、を含む発光層と、
を備えた、有機EL素子。 - 前記液晶性化合物は、-CN基、-OH基及び-F基の官能基を含まないことを特徴とする請求項6に記載の有機EL素子。
- 前記液晶性化合物は、分子の双極子モーメントが4.0debye以下であることを特徴とする請求項6に記載の有機EL素子。
- 前記液晶性化合物は、コレステリック液晶であることを特徴とする請求項6に記載の有機EL素子。
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JP2011518312A JP5130403B2 (ja) | 2009-06-12 | 2010-06-10 | 有機el薄膜用インク組成物および有機el素子 |
US13/377,297 US8390192B2 (en) | 2009-06-12 | 2010-06-10 | Ink composition for organic EL thin film, and organic EL element |
CN201080025537.3A CN102804443B (zh) | 2009-06-12 | 2010-06-10 | 有机el薄膜用墨液组合物以及有机el元件 |
EP10785963.9A EP2442378A4 (en) | 2009-06-12 | 2010-06-10 | INK COMPOSITION FOR AN ORGANIC EL FINISHING LAYER AND ORGANIC EL ELEMENT |
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JP2009140846 | 2009-06-12 | ||
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WO2010143431A1 true WO2010143431A1 (ja) | 2010-12-16 |
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PCT/JP2010/003863 WO2010143431A1 (ja) | 2009-06-12 | 2010-06-10 | 有機el薄膜用インク組成物および有機el素子 |
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US (1) | US8390192B2 (ja) |
EP (1) | EP2442378A4 (ja) |
JP (1) | JP5130403B2 (ja) |
CN (1) | CN102804443B (ja) |
WO (1) | WO2010143431A1 (ja) |
Cited By (1)
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JP2017126611A (ja) * | 2016-01-12 | 2017-07-20 | Jxtgエネルギー株式会社 | 発光電気化学素子及び該発光電気化学素子を有する発光装置 |
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- 2010-06-10 US US13/377,297 patent/US8390192B2/en not_active Expired - Fee Related
- 2010-06-10 EP EP10785963.9A patent/EP2442378A4/en not_active Withdrawn
- 2010-06-10 CN CN201080025537.3A patent/CN102804443B/zh not_active Expired - Fee Related
- 2010-06-10 JP JP2011518312A patent/JP5130403B2/ja not_active Expired - Fee Related
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JP2017126611A (ja) * | 2016-01-12 | 2017-07-20 | Jxtgエネルギー株式会社 | 発光電気化学素子及び該発光電気化学素子を有する発光装置 |
Also Published As
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JPWO2010143431A1 (ja) | 2012-11-22 |
CN102804443A (zh) | 2012-11-28 |
JP5130403B2 (ja) | 2013-01-30 |
EP2442378A1 (en) | 2012-04-18 |
US20120104944A1 (en) | 2012-05-03 |
EP2442378A4 (en) | 2015-09-30 |
US8390192B2 (en) | 2013-03-05 |
CN102804443B (zh) | 2015-03-25 |
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