WO2017119322A1 - 有機デバイスの製造方法およびロール - Google Patents
有機デバイスの製造方法およびロール Download PDFInfo
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- WO2017119322A1 WO2017119322A1 PCT/JP2016/088385 JP2016088385W WO2017119322A1 WO 2017119322 A1 WO2017119322 A1 WO 2017119322A1 JP 2016088385 W JP2016088385 W JP 2016088385W WO 2017119322 A1 WO2017119322 A1 WO 2017119322A1
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- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 description 1
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 description 1
- 150000003577 thiophenes Chemical class 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- JFLKFZNIIQFQBS-FNCQTZNRSA-N trans,trans-1,4-Diphenyl-1,3-butadiene Chemical group C=1C=CC=CC=1\C=C\C=C\C1=CC=CC=C1 JFLKFZNIIQFQBS-FNCQTZNRSA-N 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 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
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 150000003751 zinc Chemical class 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
Images
Classifications
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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
- H05B33/02—Details
- H05B33/04—Sealing arrangements, e.g. against humidity
-
- 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
-
- 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
- H05B33/02—Details
-
- 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
- H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
-
- 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
-
- 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
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
-
- 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
- H10K71/18—Deposition of organic active material using non-liquid printing techniques, e.g. thermal transfer printing from a donor sheet
-
- 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
- H10K71/40—Thermal treatment, e.g. annealing in the presence of a solvent vapour
-
- 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
- H10K71/60—Forming conductive regions or layers, e.g. electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/81—Anodes
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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
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
Definitions
- the present invention relates to an organic device manufacturing method and a roll.
- Patent Documents 1 and 2 As conventional organic device manufacturing methods, for example, methods described in Patent Documents 1 and 2 are known.
- a roll-to-roll organic device having at least one gas barrier layer, an electrode layer, and an organic material layer formed by coating on a flexible support.
- a protective film having a desiccant-containing layer is superimposed on the organic material layer and wound.
- the base material may be wound into a roll shape and temporarily stored after the organic functional layer or the like is formed. At this time, the organic functional layer or the like formed on the substrate may be deteriorated by oxygen and / or moisture. Then, in the manufacturing method of the organic device of patent document 1, the protective film which has a desiccant content layer is bonded together to the organic material layer.
- this manufacturing method requires a process of bonding the protective film, which makes the process complicated and increases the manufacturing cost because an apparatus for bonding the protective film is required.
- an inert gas having a low moisture concentration is used so that the atmosphere in which the roll-shaped substrate is stored has a low oxygen concentration and a low moisture concentration.
- inert gas is not cheap, an increase in manufacturing cost is inevitable.
- An object of one aspect of the present invention is to provide an organic device manufacturing method and roll capable of suppressing deterioration while suppressing manufacturing cost.
- the method for producing an organic device is a method for producing an organic device by producing an organic device by a continuous conveyance method using a strip-like flexible substrate, A lead part having gas barrier properties is provided at each of one end and the other end in the longitudinal direction, and a forming step of forming at least one of an electrode layer and an organic functional layer on the base material, and after the forming step, the base material A winding process for winding the substrate into a roll, and a storage process for storing the roll-shaped substrate after the winding process.
- the strip-like flexible base material used has lead portions at one end and the other end in the longitudinal direction.
- the lead portion has a gas barrier property.
- a lead part is arrange
- an electrode layer and / or an organic functional layer can be protected without using a protective film or an inert gas, deterioration can be suppressed while suppressing manufacturing costs.
- the electrode layer includes a first electrode layer and a second electrode layer, and in the forming step, the first electrode layer, the organic functional layer, and the second electrode layer are formed in this order on the substrate. May be. Thereby, deterioration of the organic device constituted by the first electrode layer, the organic functional layer, and the second electrode layer can be suppressed by the lead portion.
- a gas barrier layer may be provided on at least one of the front surface and the back surface of the substrate. Thereby, it can suppress further that oxygen and / or a water
- the lead part may be provided with a gas barrier film or a metal foil.
- the gas barrier property of a lead part is securable.
- the length of the lead portion may be longer than the length of the outer periphery of the roll formed by winding the substrate.
- a temperature-sensitive adhesive member that increases in adhesive force at a predetermined first temperature or higher and decreases in adhesive force at a predetermined second temperature or lower. And a heating step of heating the thermosensitive adhesive member to a predetermined first temperature or higher after the forming step and before the storage step.
- it may include a low-temperature treatment step of performing a low-temperature treatment so that the temperature-sensitive adhesive member has a predetermined second temperature or lower after the storage step and before performing the next step. .
- a temperature sensitive adhesive member can be peeled from a base material.
- a roll according to one aspect of the present invention is a roll in which a base material having a belt-like flexibility is wound, and on the base material, at least one layer of an electrode layer and an organic functional layer is formed,
- the base material is provided with a lead portion having gas barrier properties at one end and the other end in the longitudinal direction.
- a lead portion having gas barrier properties is provided at each of one end and the other end in the longitudinal direction of the base material.
- the penetration of oxygen and / or moisture into the electrode layer and / or the organic functional layer can be suppressed by the gas barrier property of the lead portion.
- the electrode layer and / or the organic functional layer can be protected without using a protective film or an inert gas when the roll is stored, deterioration can be suppressed while suppressing the manufacturing cost.
- deterioration of the electrode layer and / or the organic functional layer can be suppressed while suppressing the manufacturing cost.
- FIG. 1 is a cross-sectional view of an organic EL element manufactured by an organic device manufacturing method according to an embodiment.
- FIG. 2 is a plan view showing the support substrate.
- FIG. 3 is a cross-sectional view taken along line III-III in FIG.
- FIG. 4 is a flowchart showing a method for manufacturing an organic device.
- FIG. 5 is a diagram schematically showing a method of manufacturing an organic device by a roll-to-roll method.
- FIG. 6 is a side view of the roll on which the support substrate is wound.
- FIG. 7 is a diagram illustrating a support substrate used in a method for manufacturing an organic device according to another embodiment.
- FIG. 8 is a flowchart showing a method for manufacturing an organic device according to another embodiment.
- an organic EL element (organic device) 1 manufactured by the organic device manufacturing method of the present embodiment includes a support substrate (base material) 3, an anode layer (first electrode layer) 5, and The organic functional layer 7, the cathode layer (second electrode layer) 9, and the sealing layer 11 are provided.
- the support substrate 3 is made of a resin that is transparent to visible light (light having a wavelength of 400 nm to 800 nm).
- the support substrate 3 is a film-like substrate (flexible substrate, flexible substrate).
- the thickness of the support substrate 3 is, for example, not less than 30 ⁇ m and not more than 500 ⁇ m.
- the support substrate 3 is, for example, a plastic film.
- the material of the support substrate 3 is, for example, polyethersulfone (PES); polyester resin such as polyethylene terephthalate (PET) or polyethylene naphthalate (PEN); polyolefin resin such as polyethylene (PE), polypropylene (PP), or cyclic polyolefin; Polyamide resin; Polycarbonate resin; Polystyrene resin; Polyvinyl alcohol resin; Saponified ethylene-vinyl acetate copolymer; Polyacrylonitrile resin; Acetal resin; Polyimide resin;
- the material of the support substrate 3 is preferably a polyester resin or a polyolefin resin because of its high heat resistance, low coefficient of linear expansion, and low production cost, and particularly preferably polyethylene retephthalate or polyethylene naphthalate. .
- these resin may be used individually by 1 type, and may be used in combination of 2 or more type.
- lead portions 4A and 4B are provided at one end and the other end (both ends) in the longitudinal direction of the support substrate 3, respectively.
- the lead portions 4A and 4B are regions wound around the core C (see FIG. 6) or wound around the outer periphery of the roll R (see FIG. 6) around which the support substrate 3 is wound.
- the lead portions 4A and 4B may be formed integrally with the support substrate 3 or may be attached to the support substrate 3.
- the lead portions 4 ⁇ / b> A and 4 ⁇ / b> B may be formed of the same material as the support substrate 3, or may be formed of a material different from the support substrate 3.
- D is the diameter [m] of the wound roll R.
- the diameter D is calculated
- t is the thickness [m] of the support substrate 3
- l is the total length [m] of the roll R
- and d is the diameter [m] of the core C.
- Each of the lead portions 4A and 4B has a gas barrier property that shields moisture and / or oxygen.
- a gas barrier layer 6 is formed in the lead portions 4A and 4B.
- the gas barrier layer 6 is disposed on one main surface 4Aa of the lead portion 4A of the support substrate 3.
- the gas barrier layer 6 is also disposed on one main surface 4Aa in the lead portion 4B of the support substrate 3.
- the gas barrier layer 6 may be disposed on the other main surface 4Ab of the lead portions 4A and 4B of the support substrate 3, or may be disposed on both the one main surface 4Aa and the other main surface 4Ab. Good.
- the gas barrier layer 6 is a gas barrier film or a metal foil.
- the gas barrier film is, for example, a single-layer or multi-layer thin film of an inorganic oxide such as silicon oxide, silicon nitride, silicon oxynitride, or aluminum oxide formed on the support substrate 3.
- the gas barrier film preferably has a multilayer structure composed of the inorganic oxide layer (inorganic layer) and the organic material layer (organic layer) in order to improve brittleness.
- the order of stacking the inorganic layer and the organic layer is not limited, but it is preferable to stack both layers alternately a plurality of times.
- Gas barrier film forming methods include, for example, vacuum deposition, sputtering, reactive sputtering, molecular beam epitaxy, ion plating, plasma polymerization, atmospheric pressure plasma polymerization, plasma CVD, laser CVD, heat Examples thereof include a CVD method and a coating method.
- the metal foil for example, a metal material such as aluminum, copper or nickel, or an alloy material such as stainless steel or aluminum alloy can be used.
- the lead portions 4A and 4B may be formed of a material having gas barrier properties.
- the anode layer 5 is disposed on one main surface 3 a of the support substrate 3.
- an electrode layer showing optical transparency is used.
- a thin film of metal oxide, metal sulfide, metal or the like having high electrical conductivity can be used, and a thin film having high light transmittance is preferably used.
- a thin film made of indium oxide, zinc oxide, tin oxide, indium tin oxide (abbreviated as ITO), indium zinc oxide (abbreviated as IZO), gold, platinum, silver, copper, or the like is used.
- a thin film made of ITO, IZO, or tin oxide is preferably used.
- an organic transparent conductive film such as polyaniline and derivatives thereof, polythiophene and derivatives thereof may be used.
- an electrode obtained by patterning a metal or a metal alloy or the like into a mesh shape, or an electrode in which nanowires containing silver are formed in a network shape may be used.
- the thickness of the anode layer 5 can be determined in consideration of light transmittance, electrical conductivity, and the like.
- the thickness of the anode layer 5 is usually 10 nm to 10 ⁇ m, preferably 20 nm to 1 ⁇ m, and more preferably 50 nm to 500 nm.
- Examples of the method for forming the anode layer 5 include a vacuum deposition method, a sputtering method, an ion plating method, a plating method, and a coating method.
- the organic functional layer 7 is disposed on one main surface 3 a of the anode layer 5 and the support substrate 3.
- the organic functional layer 7 includes a light emitting layer.
- the organic functional layer 7 usually contains an organic substance that mainly emits fluorescence and / or phosphorescence, or a light emitting layer dopant material that assists the organic substance.
- the dopant material for the light emitting layer is added, for example, in order to improve the light emission efficiency or change the light emission wavelength.
- the organic substance may be a low molecular compound or a high molecular compound. Examples of the light emitting material constituting the organic functional layer 7 include a dye material, a metal complex material, a polymer material, and a dopant material for the light emitting layer described later.
- dye material examples include cyclopentamine and derivatives thereof, tetraphenylbutadiene and derivatives thereof, triphenylamine and derivatives thereof, oxadiazole and derivatives thereof, pyrazoloquinoline and derivatives thereof, distyrylbenzene and derivatives thereof, and distyryl.
- Metal complex materials examples include rare earth metals such as Tb, Eu, and Dy, or Al, Zn, Be, Pt, Ir, and the like as a central metal, and an oxadiazole, thiadiazole, phenylpyridine, phenylbenzimidazole, and quinoline structure. And the like.
- metal complexes include metal complexes having light emission from triplet excited states such as iridium complexes and platinum complexes, aluminum quinolinol complexes, benzoquinolinol beryllium complexes, benzoxazolyl zinc complexes, benzothiazole zinc complexes, azomethyl zinc complexes, Examples include porphyrin zinc complex and phenanthroline europium complex.
- Polymer material examples include polyparaphenylene vinylene and derivatives thereof, polythiophene and derivatives thereof, polyparaphenylene and derivatives thereof, polysilane and derivatives thereof, polyacetylene and derivatives thereof, polyfluorene and derivatives thereof, polyvinylcarbazole and derivatives thereof, Examples thereof include materials obtained by polymerizing dye materials and metal complex materials.
- Dopant material for light emitting layer examples include perylene and derivatives thereof, coumarin and derivatives thereof, rubrene and derivatives thereof, quinacridone and derivatives thereof, squalium and derivatives thereof, porphyrin and derivatives thereof, styryl dyes, tetracene and derivatives thereof, pyrazolone and derivatives thereof. Derivatives, decacyclene and its derivatives, phenoxazone and its derivatives.
- the thickness of the organic functional layer 7 is usually 2 nm to 200 nm.
- the organic functional layer 7 is formed by, for example, a coating method using a coating liquid (for example, ink) containing the light emitting material as described above.
- the solvent of the coating solution containing the light emitting material is not limited as long as it dissolves the light emitting material.
- the cathode layer 9 is disposed on one main surface 3 a of the organic functional layer 7 and the support substrate 3.
- the cathode layer 9 is electrically connected to the extraction electrode 9a.
- the extraction electrode 9 a is disposed on one main surface 3 a of the support substrate 3.
- the extraction electrode 9a is arranged at a predetermined interval from the anode layer 5.
- the thickness of the extraction electrode 9 a is equal to the thickness of the anode layer 5.
- the material of the extraction electrode 9 a is the same as that of the anode layer 5.
- alkali metal alkaline earth metal, transition metal, and Group 13 metal of the periodic table
- examples of the material of the cathode layer 9 include lithium, sodium, potassium, rubidium, cesium, beryllium, magnesium, calcium, strontium, barium, aluminum, scandium, vanadium, zinc, yttrium, indium, cerium, and samarium.
- alloys include magnesium-silver alloys, magnesium-indium alloys, magnesium-aluminum alloys, indium-silver alloys, lithium-aluminum alloys, lithium-magnesium alloys, lithium-indium alloys, and calcium-aluminum alloys.
- the cathode layer 9 for example, a transparent conductive electrode made of a conductive metal oxide, a conductive organic substance, or the like can be used.
- the conductive metal oxide include indium oxide, zinc oxide, tin oxide, ITO, and IZO.
- Specific examples of the conductive organic material include polyaniline and derivatives thereof, and polythiophene and derivatives thereof.
- the cathode layer 9 may be comprised by the laminated body which laminated
- the thickness of the cathode layer 9 is set in consideration of electric conductivity and durability.
- the thickness of the cathode layer 9 is usually 10 nm to 10 ⁇ m, preferably 20 nm to 1 ⁇ m, and more preferably 50 nm to 500 nm.
- Examples of the method for forming the cathode layer 9 include a vacuum deposition method, a sputtering method, a laminating method in which a metal thin film is thermocompression bonded, and a coating method.
- the sealing layer 11 is disposed at the top of the organic EL element 1.
- the sealing layer 11 is joined by an adhesive layer (not shown).
- the sealing layer 11 is a metal foil, a barrier film in which a barrier functional layer is formed on the front surface or back surface of a transparent plastic film, or both surfaces thereof, a thin film glass having flexibility, or a metal layer having barrier properties on a plastic film. It consists of a film etc. and has a gas barrier function, especially a moisture barrier function.
- As the metal foil copper, aluminum, and stainless steel are preferable from the viewpoint of barrier properties.
- the thickness of the metal foil is preferably as thick as possible from the viewpoint of suppressing pinholes, but is preferably 15 ⁇ m to 50 ⁇ m from the viewpoint of flexibility.
- FIG. 5 shows an example of the steps from the substrate drying step S01 to the cathode layer forming step S04.
- the support substrate 3 is heated to dry the support substrate 3 (substrate drying step S01).
- the anode layer 5 and the extraction electrode 9a are formed on the dried support substrate 3 (one main surface 3a) (anode layer forming step (forming step) S02).
- the anode layer 5 (extraction electrode 9a) can be formed by the formation method exemplified in the description of the anode layer 5.
- the organic functional layer 7 is formed on the anode layer 5 (organic functional layer forming step (forming step) S03).
- the organic functional layer 7 can be formed by the formation method exemplified in the description of the organic functional layer 7.
- the cathode layer 9 is formed on the organic functional layer 7 (cathode layer forming step (forming step) S04).
- the cathode layer 9 can be formed by the formation method exemplified in the description of the cathode layer 9.
- the support substrate 3 on which the cathode layer 9 is formed is wound into a roll (winding step S05).
- a roll R is formed.
- the lead portion 4A is wound around the core C.
- the lead portion 4B is wound around the outer periphery of the roll R.
- the roll R is stored in, for example, a storage (storage step S06).
- the roll R stored in the storage step S06 is prepared, and the organic functional layer 7 and the cathode layer 9 formed on the support substrate 3 are sealed with the sealing layer 11 (sealing step S07).
- the roll R is prepared, the support substrate 3 is stretched between the unwinding roll 30A and the winding roll 30B, and the sealing layer 11 is bonded.
- the organic EL element 1 is manufactured.
- the strip-like flexible support substrate 3 used has the lead portions 4A and 4B at one end and the other end in the longitudinal direction. ing.
- the lead portions 4A and 4B have gas barrier properties.
- the lead portions 4A and 4B are arranged inside and outside the roll R. Therefore, the organic functional layer 7 and the cathode layer 9 are protected from oxygen and / or moisture by the gas barrier properties of the lead portions 4A and 4B.
- the organic functional layer 7 and the cathode layer 9 can be protected without using a protective film or an inert gas, deterioration can be suppressed while suppressing manufacturing costs.
- the support substrate 3 is wound up and stored. Thereby, deterioration of the organic EL element (organic device) comprised by the anode layer 5, the organic functional layer 7, and the cathode layer 9 can be suppressed by the lead parts 4A and 4B.
- the lead portions 4A and 4B are provided with a gas barrier layer 6 formed of a gas barrier film or a metal foil. Thereby, the gas barrier properties of the lead portions 4A and 4B can be ensured.
- the lengths of the lead portions 4A and 4B are longer than the length of the outer periphery of the roll R formed by winding up the support substrate 3. Thereby, since the outer periphery of the roll R is covered with the lead portion 4A or the lead portion 4B, it is possible to more reliably suppress oxygen and / or moisture from entering the organic functional layer 7 and the cathode layer 9.
- the present invention is not limited to the above-described embodiment, and various modifications can be made.
- positioned between the anode layer 5 and the cathode layer 9 was illustrated.
- the structure of the organic functional layer 7 is not limited to this.
- the organic functional layer 7 may have the following configuration.
- A (Anode layer) / Light emitting layer / (Cathode layer)
- B (Anode layer) / Hole injection layer / Light emitting layer / (Cathode layer)
- C (anode layer) / hole injection layer / light emitting layer / electron injection layer / (cathode layer)
- D (anode layer) / hole injection layer / light emitting layer / electron transport layer / electron injection layer / (cathode layer)
- E (Anode layer) / Hole injection layer / Hole transport layer / Light emitting layer / (Cathode layer)
- F (anode layer) / hole injection layer / hole transport layer / light emitting layer / electron injection layer / (cathode layer)
- G (anode layer) / hole injection layer / hole transport layer / light emitting layer / electron transport layer / electron injection layer / (cathode layer) (H) (anode
- the hole injection layer As the materials for the hole injection layer, the hole transport layer, the electron transport layer, and the electron injection layer, known materials can be used.
- Each of the hole injection layer, the hole transport layer, the electron transport layer, and the electron injection layer can be formed by, for example, a coating method in the same manner as the organic functional layer 7.
- the organic EL element 1 may have a single organic functional layer 7 or may have two or more organic functional layers 7.
- the layer configuration shown to the following (j) can be mentioned, for example.
- the two (structural unit A) layer configurations may be the same or different.
- the charge generation layer is a layer that generates holes and electrons by applying an electric field.
- Examples of the charge generation layer include a thin film made of vanadium oxide, ITO, molybdenum oxide, or the like.
- (structural unit A) / charge generation layer is “structural unit B”
- the configuration of an organic EL element having three or more organic functional layers 7 is, for example, the layer configuration shown in the following (k) Can be mentioned.
- (Structural unit B) x represents a stacked body in which (Structural unit B) is stacked in x stages.
- a plurality of (structural units B) may have the same or different layer structure.
- the organic EL element may be configured by directly laminating a plurality of organic functional layers 7 without providing a charge generation layer.
- an example in which the anode layer 5 is formed on the support substrate 3 by the roll-to-roll method has been described as an example.
- the anode layer 5 is formed in advance on the support substrate 3, and the support substrate 3 on which the long anode layer 5 stretched between the unwinding roll 30A and the winding roll 30B is continuously conveyed.
- Each process related to the manufacture of the organic EL element 1 may be performed while being conveyed by the roller 31.
- the substrate drying step S01 is performed, but the substrate drying step S01 may not be performed.
- the embodiment in which the winding step S05 and the storage step S06 are performed after the cathode layer forming step S04 has been described as an example.
- the winding process and the storage process may be performed after the organic functional layer forming process S03.
- the winding process and the storage process can be performed at an arbitrary timing (in the middle of each process).
- a gas barrier layer may be provided on at least one of the one main surface (front surface) 3a and the other main surface (back surface) 3b of the support substrate 3.
- the following method can be employed in the method for manufacturing an organic device.
- An organic device manufacturing method according to another embodiment will be described with reference to FIGS. Since the substrate drying step S11 to the winding step S15 in FIG. 8 are the same as the substrate drying step S01 to the winding step S05 in the above embodiment, detailed description thereof is omitted.
- the support substrate 3 is provided with a temperature-sensitive adhesive sheet (temperature-sensitive adhesive member) 13.
- the temperature-sensitive adhesive sheets 13 are respectively disposed on one main surface 3a of both end portions in the width direction of the support substrate 3, and are adhered along the longitudinal direction.
- the temperature-sensitive adhesive sheet 13 has a high adhesive force at a predetermined first temperature or higher and a low adhesive force at a predetermined second temperature or lower.
- the temperature-sensitive adhesive sheet 13 exhibits adhesiveness at, for example, 50 ° C. or higher, and the adhesive strength decreases at 3 ° C. or lower (becomes peelable from other members).
- heating step S16 roll R is heated by throwing roll R into heating chambers, such as oven of 50 ° C or more, for example.
- heating chambers such as oven of 50 ° C or more, for example.
- the temperature-sensitive adhesive sheet 13 becomes sticky (higher), and the temperature-sensitive adhesive sheet 13 and the other main surface 3b of the support substrate 3 are in close contact with each other.
- roll R is stored, for example in storage etc. (storage process S17).
- the roll R stored in the storage step S17 is prepared, and the roll R is subjected to low temperature processing (low temperature processing step S18).
- the low temperature treatment step S18 for example, the roll R is subjected to a low temperature treatment by introducing the roll R into a cooling chamber of 3 ° C. or lower.
- the adhesive force of the temperature-sensitive adhesive sheet 13 is reduced, and the temperature-sensitive adhesive sheet 13 is peeled off from the other main surface 3 b of the support substrate 3.
- the organic functional layer 7 and the cathode layer 9 which were formed on the support substrate 3 are sealed with the sealing layer 11 (sealing process S19).
- a roll R subjected to a low temperature treatment is prepared, and the support substrate 3 is stretched between the unwinding roll 30A and the winding roll 30B, and the sealing layer 11 is bonded.
- the organic EL element 1 is manufactured.
- the organic functional layer 7 and the cathode layer 9 can be further protected and deterioration can be suppressed.
- the temperature-sensitive adhesive sheet 13 may be heated by, for example, a roll laminator before winding the support substrate 3 into a roll. That is, you may implement a winding process after a heating process.
- the organic EL element is described as an example of the organic device.
- the organic device may be an organic thin film transistor, an organic photodetector, an organic thin film solar cell, or the like.
- SYMBOLS 1 Organic EL element (organic device), 3 ... Support substrate (base material), 3a ... One main surface (front surface), 3b ... The other main surface (back surface), 4A, 4B ... Lead part, 5 ... Anode layer (First electrode layer), 7 ... organic functional layer, 9 ... cathode layer (second electrode layer), 13 ... thermosensitive adhesive sheet (thermosensitive adhesive member), R ... roll, S02, S12 ... cathode layer formation Step (formation step), S03, S13 ... Organic functional layer formation step (formation step), S04, S14 ... Cathode layer formation step (formation step), S05, S15 ... Winding step, S06, S17 ... Storage step, S16 ... Heating step, S18 ... low temperature processing step.
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Abstract
Description
支持基板3は、可視光(波長400nm~800nmの光)に対して透光性を有する樹脂から構成されている。支持基板3は、フィルム状の基板(フレキシブル基板、可撓性を有する基板)である。支持基板3の厚さは、例えば、30μm以上500μm以下である。
L=2πD …(1)
上記式において、Dは、巻き取られたロールRの直径[m]である。直径Dは、以下の式(2)により求められる。
陽極層5は、支持基板3の一方の主面3a上に配置されている。陽極層5には、光透過性を示す電極層が用いられる。光透過性を示す電極としては、電気伝導度の高い金属酸化物、金属硫化物及び金属等の薄膜を用いることができ、光透過率の高い薄膜が好適に用いられる。例えば酸化インジウム、酸化亜鉛、酸化スズ、インジウム錫酸化物(Indium Tin Oxide:略称ITO)、インジウム亜鉛酸化物(Indium Zinc Oxide:略称IZO)、金、白金、銀、及び銅等からなる薄膜が用いられ、これらの中でもITO、IZO、又は酸化スズからなる薄膜が好適に用いられる。
有機機能層7は、陽極層5及び支持基板3の一方の主面3a上に配置されている。有機機能層7は、発光層を含んでいる。有機機能層7は、通常、主として蛍光及び/又はりん光を発光する有機物、或いは該有機物とこれを補助する発光層用ドーパント材料を含む。発光層用ドーパント材料は、例えば発光効率を向上させたり、発光波長を変化させたりするために加えられる。なお、有機物は、低分子化合物であってもよいし、高分子化合物であってもよい。有機機能層7を構成する発光材料としては、例えば後述の色素材料、金属錯体材料、高分子材料、発光層用ドーパント材料を挙げることができる。
色素材料としては、例えばシクロペンダミン及びその誘導体、テトラフェニルブタジエン及びその誘導体、トリフェニルアミン及びその誘導体、オキサジアゾール及びその誘導体、ピラゾロキノリン及びその誘導体、ジスチリルベンゼン及びその誘導体、ジスチリルアリーレン及びその誘導体、ピロール及びその誘導体、チオフェン化合物、ピリジン化合物、ペリノン及びその誘導体、ペリレン及びその誘導体、オリゴチオフェン及びその誘導体、オキサジアゾールダイマー及びその誘導体、ピラゾリンダイマー及びその誘導体、キナクリドン及びその誘導体、クマリン及びその誘導体を挙げることができる。
金属錯体材料としては、例えばTb、Eu、Dy等の希土類金属、又はAl、Zn、Be、Pt、Ir等を中心金属に有し、オキサジアゾール、チアジアゾール、フェニルピリジン、フェニルベンゾイミダゾール、キノリン構造等を配位子に有する金属錯体を挙げることができる。金属錯体としては、例えばイリジウム錯体、白金錯体等の三重項励起状態からの発光を有する金属錯体、アルミニウムキノリノール錯体、ベンゾキノリノールベリリウム錯体、ベンゾオキサゾリル亜鉛錯体、ベンゾチアゾール亜鉛錯体、アゾメチル亜鉛錯体、ポルフィリン亜鉛錯体、フェナントロリンユーロピウム錯体を挙げることができる。
高分子材料としては、例えばポリパラフェニレンビニレン及びその誘導体、ポリチオフェン及びその誘導体、ポリパラフェニレン及びその誘導体、ポリシラン及びその誘導体、ポリアセチレン及びその誘導体、ポリフルオレン及びその誘導体、ポリビニルカルバゾール及びその誘導体、上記色素材料、金属錯体材料を高分子化した材料を挙げることができる。
発光層用ドーパント材料としては、例えばペリレン及びその誘導体、クマリン及びその誘導体、ルブレン及びその誘導体、キナクリドン及びその誘導体、スクアリウム及びその誘導体、ポルフィリン及びその誘導体、スチリル色素、テトラセン及びその誘導体、ピラゾロン及びその誘導体、デカシクレン及びその誘導体、フェノキサゾン及びその誘導体を挙げることができる。
陰極層9は、有機機能層7及び支持基板3の一方の主面3a上に配置されている。陰極層9は、引出電極9aに電気的に接続されている。引出電極9aは、支持基板3の一方の主面3aに配置されている。引出電極9aは、陽極層5と所定の間隔をあけて配置されている。引出電極9aの厚さは、陽極層5の厚さと同等である。引出電極9aの材料は、陽極層5の材料と同様である。
封止層11は、有機EL素子1において最上部に配置されている。封止層11は、粘接着層(図示しない)により接合されている。封止層11は、金属箔、透明なプラスチックフィルムの表面若しくは裏面又はその両面にバリア機能層を形成したバリアフィルム、或いはフレキブル性を有する薄膜ガラス、プラスチックフィルム上にバリア性を有する金属積層させたフィルム等からなり、ガスバリア機能、特に水分バリア機能を有する。金属箔としては、バリア性の観点から、銅、アルミニウム、ステンレスが好ましい。金属箔の厚さは、ピンホール抑制の観点から厚い程好ましいが、フレキシブル性の観点も考慮すると15μm~50μmが好ましい。
続いて、上記構成を有する有機EL素子1の製造方法について、図4を参照して説明する。
(a)(陽極層)/発光層/(陰極層)
(b)(陽極層)/正孔注入層/発光層/(陰極層)
(c)(陽極層)/正孔注入層/発光層/電子注入層/(陰極層)
(d)(陽極層)/正孔注入層/発光層/電子輸送層/電子注入層/(陰極層)
(e)(陽極層)/正孔注入層/正孔輸送層/発光層/(陰極層)
(f)(陽極層)/正孔注入層/正孔輸送層/発光層/電子注入層/(陰極層)
(g)(陽極層)/正孔注入層/正孔輸送層/発光層/電子輸送層/電子注入層/(陰極層)
(h)(陽極層)/発光層/電子注入層/(陰極層)
(i)(陽極層)/発光層/電子輸送層/電子注入層/(陰極層)
ここで、記号「/」は、記号「/」を挟む各層が隣接して積層されていることを示す。
(j)陽極層/(構造単位A)/電荷発生層/(構造単位A)/陰極層
(k)陽極層/(構造単位B)x/(構造単位A)/陰極層
Claims (8)
- 帯状の可撓性を有する基材を用いて、連続搬送方式により有機デバイスを製造する有機デバイスの製造方法であって、
前記基材には、長手方向の一端及び他端のそれぞれに、ガスバリア性を有するリード部が設けられており、
前記基材上に電極層及び有機機能層の少なくとも一層を形成する形成工程と、
前記形成工程の後に、前記基材をロール状に巻き取る巻取工程と、
前記巻取工程の後に、ロール状の前記基材を保管する保管工程と、を含む、有機デバイスの製造方法。 - 前記電極層は、第1電極層及び第2電極層を含み、
前記形成工程では、前記基材上に、前記第1電極層、前記有機機能層、及び前記第2電極層をこの順番で形成する、請求項1に記載の有機デバイスの製造方法。 - 前記基材の表面及び裏面の少なくとも一方には、ガスバリア層が設けられている、請求項1又は2に記載の有機デバイスの製造方法。
- 前記リード部には、ガスバリアフィルム又は金属箔が設けられている、請求項1~3のいずれか一項に記載の有機デバイスの製造方法。
- 前記リード部の長さは、前記基材を巻き取って形成されるロールの外周の長さよりも長い、請求項1~4のいずれか一項に記載の有機デバイスの製造方法。
- 前記基材の幅方向における両端部の一面上には、所定の第1温度以上で粘着力が高くなり且つ所定の第2温度以下で粘着力が低くなる感温性粘着部材が設けられており、
前記形成工程の後で且つ前記保管工程の前に、前記感温性粘着部材を前記所定の第1温度以上に加熱する加熱工程を含む、請求項1~5のいずれか一項に記載の有機デバイスの製造方法。 - 前記保管工程の後、次の工程を実施する前に、前記感温性粘着部材が前記所定の第2温度以下となるように低温処理を実施する低温処理工程を含む、請求項6に記載の有機デバイスの製造方法。
- 帯状の可撓性を有する基材が巻き取られたロールであって、
前記基材上には、電極層及び有機機能層の少なくとも一層が形成されており、
前記基材には、長手方向の一端及び他端のそれぞれに、ガスバリア性を有するリード部が設けられている、ロール。
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EP16883821.7A EP3402313A4 (en) | 2016-01-05 | 2016-12-22 | METHOD FOR PRODUCING AN ORGANIC DEVICE AND ROLE |
CN201680077780.7A CN108476572B (zh) | 2016-01-05 | 2016-12-22 | 有机器件的制造方法及卷筒 |
US16/067,725 US10510994B2 (en) | 2016-01-05 | 2016-12-22 | Method for manufacturing organic device, and roll |
KR1020187021186A KR20180100145A (ko) | 2016-01-05 | 2016-12-22 | 유기 디바이스의 제조 방법 및 롤 |
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