WO2017061380A1 - 有機電子素子の製造方法、及び、有機電子素子 - Google Patents
有機電子素子の製造方法、及び、有機電子素子 Download PDFInfo
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- WO2017061380A1 WO2017061380A1 PCT/JP2016/079310 JP2016079310W WO2017061380A1 WO 2017061380 A1 WO2017061380 A1 WO 2017061380A1 JP 2016079310 W JP2016079310 W JP 2016079310W WO 2017061380 A1 WO2017061380 A1 WO 2017061380A1
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- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
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- H05B33/00—Electroluminescent light sources
- H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H10K50/14—Carrier transporting layers
- H10K50/15—Hole transporting layers
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- H10K50/00—Organic light-emitting devices
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- H10K50/14—Carrier transporting layers
- H10K50/16—Electron transporting layers
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- H10K50/17—Carrier injection layers
- H10K50/171—Electron injection layers
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- H10K50/00—Organic light-emitting devices
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- H10K50/841—Self-supporting sealing arrangements
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- H10K71/10—Deposition of organic active material
- H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
- H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask
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- H10K77/10—Substrates, e.g. flexible substrates
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- H10K2102/301—Details of OLEDs
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- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/81—Anodes
- H10K50/818—Reflective anodes, e.g. ITO combined with thick metallic layers
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- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/828—Transparent cathodes, e.g. comprising thin metal layers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a method for producing a flexible organic electronic device, such as an organic EL device, an organic solar cell, and an organic transistor, and a flexible organic electronic device.
- a flexible organic electronic device such as an organic EL device, an organic solar cell, and an organic transistor
- Organic electronic elements such as organic EL (Electro Luminescence) elements, organic solar cells, and organic transistors are known.
- This type of organic electronic device has various functional layers such as a light emitting layer containing an organic material, a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, an active layer, a semiconductor layer, and an insulating layer.
- This type of organic electronic element may be formed on a film-like substrate (a flexible substrate, a flexible substrate) to form a film.
- a method for producing a film-like organic electronic device a method of forming various layers using a roll-to-roll method is known.
- Patent Document 1 discloses a method for manufacturing an organic EL element as a method for manufacturing this type of organic electronic element.
- an evaporation method, a sputtering method, a CVD method, or the like is used as an electrode forming method.
- a shadow mask is disposed in a vapor deposition apparatus, a sputtering apparatus, or a CVD apparatus, and a film-like substrate and the mask are aligned to form a film.
- one aspect of the present invention is a method for manufacturing an organic electronic device that can achieve both film surface protection and continuous productivity improvement in a method for manufacturing an organic electronic device using a roll-to-roll method, and
- An object of the present invention is to provide an organic electronic device.
- An organic electronic device manufacturing method is a method of manufacturing a flexible organic electronic device using a roll-to-roll method, wherein the first method is provided on a flexible substrate.
- the functional layer is formed by the flexible mask member. It can prevent that a film surface contacts a base material back surface, and can prevent that the film surface of a functional layer contacts a roll directly. As a result, it is possible to prevent the film surface of the functional layer from being physically or chemically damaged (protection of the film surface).
- the mask member can be used as a mask for forming the second electrode. Since there is no need to set a shadow mask, continuous productivity can be improved (improvement of continuous productivity).
- the mask member covers the edge of at least one side of the first electrode and the functional layer, when this mask member is used as a mask for forming the second electrode, the first electrode and the second electrode And a connection portion for the lead-out wiring can be formed at the edge of at least one side of the first electrode.
- a flexible mask member may be formed on the substrate so as to surround the four sides of the first electrode and the functional layer in the opening region.
- a lattice-like mask member that intersects the longitudinal direction and the width direction of the long base material can be formed. Therefore, when the substrate is once wound around the roll after the formation of the first electrode and the functional layer, the lattice-shaped mask member can suppress the occurrence of sagging even when the width of the long substrate is wide.
- the film surface of the functional layer can be prevented from coming into contact with the back surface of the substrate even at the center in the width direction, and further, the film surface of the functional layer can be prevented from coming into direct contact with the roll. As a result, the film surface of the functional layer can be further prevented from being physically or chemically damaged (protection of the film surface).
- the above-described mask formation step includes sequentially bonding the first releasable release sheet, the flexible mask film, the second releasable release sheet, and the carrier film, The process of producing the bonding film which processed the 1st releasable release sheet and mask film into the mask member which has an opening, and the edge of at least 1 side in the 1st electrode and a functional layer with a mask member.
- the process of bonding a bonding film on a base material so that it may cover, and the process of peeling the 2nd releasable release sheet and carrier film in a bonding film from a mask member may be included.
- the mask film when an opening is formed in the mask film, if there is no carrier film, roll-to-roll is applied with a tension in the longitudinal direction of the mask film, so the mask film is twisted.
- the tension is dispersed in the carrier film, and the carrier film is also present at the opening portion of the mask film, so that the mask film due to the opening is greatly deformed. To be relaxed.
- the damage by mask member processing is not given to a base material.
- the opening processed in the mask member alleviates the contact of the first electrode or the functional layer directly with the mask member, carrier film, and release sheet. It is possible to suppress the occurrence of defects due to foreign matter biting.
- the mask forming step described above includes a step of sequentially bonding a release sheet that can be peeled off and a flexible mask film on the base material so as to cover the first electrode and the functional layer, And processing the peelable release sheet and the mask film into a mask member having an opening.
- the mask member is directly bonded to the light emitting region including the first electrode and the functional layer, cut into an arbitrary shape to form the second electrode including the light emitting region, and the portion is peeled and removed. To do.
- the manufacturing method of the organic electronic element described above may further include a second electrode forming step of forming the second electrode on the functional layer using the mask member described above.
- the manufacturing method of the organic electronic element described above may further include a sealing film forming step of forming a sealing film on the second electrode using the mask member described above.
- the mask member can be used as a mask for forming a sealing film, and since there is no need to set a shadow mask for forming a sealing film as in the past, continuous productivity is further improved. can do.
- the above-described method for manufacturing an organic electronic element may further include a mask peeling process for peeling the mask member from the base material.
- Another method of manufacturing an organic electronic device is a method of manufacturing a flexible organic electronic device using a roll-to-roll method.
- a mask forming step of forming a mask member on the substrate is performed after the mask forming step.
- the functional layer is formed by a flexible mask member. It can prevent that a film surface contacts a base material back surface, and can prevent that the film surface of a functional layer contacts a roll directly. As a result, it is possible to prevent the film surface of the functional layer from being physically or chemically damaged (protection of the film surface).
- the mask member can be used as a mask for forming the second electrode. Since there is no need to set a shadow mask, continuous productivity can be improved (improvement of continuous productivity).
- the mask member covers at least one edge of the first electrode, when this mask member is used as a mask for forming the second electrode, the contact between the first electrode and the second electrode
- the connection portion for the lead-out wiring can be formed at the edge of at least one side of the first electrode.
- a flexible mask member may be formed on the substrate so as to surround the four sides of the first electrode in the opening region.
- a lattice-like mask member that intersects the longitudinal direction and the width direction of the long base material can be formed. Therefore, when the substrate is once wound around the roll after the formation of the first electrode and the functional layer, the lattice-shaped mask member can suppress the occurrence of sagging even when the width of the long substrate is wide.
- the film surface of the functional layer can be prevented from coming into contact with the back surface of the substrate even at the center in the width direction, and further, the film surface of the functional layer can be prevented from coming into direct contact with the roll. As a result, the film surface of the functional layer can be further prevented from being physically or chemically damaged (protection of the film surface).
- the above-described mask formation step includes sequentially bonding the first releasable release sheet, the flexible mask film, the second releasable release sheet, and the carrier film, A step of producing a bonding film obtained by processing the first releasable release sheet and the mask film into a mask member having an opening, and covering the edge of at least one side of the first electrode with the mask member.
- the process of bonding a bonding film on a base material, and the process of peeling the 2nd releasable release sheet and carrier film in a bonding film from a mask member may be included.
- the carrier film is lined to disperse the tension in the carrier film, and the carrier film is also present at the opening of the mask film. Is greatly relaxed. Moreover, since it processes into a mask member before bonding this bonding film on a base material, the damage by mask member processing is not given to a base material. Furthermore, since the opening processed in the mask member relieves the first electrode from coming into direct contact with the mask member, the carrier film, and the release sheet, adhesion of contamination components due to contact, rubbing, pushing, biting of foreign matter It is possible to suppress the occurrence of defects due to intrusion.
- the mask forming step described above includes a step of sequentially bonding a release sheet that can be peeled off and a mask film having flexibility so as to cover the first electrode, and a releasable step.
- the mask member is bonded to the light emitting region, so that the mask member is processed into the light emitting region at the time of mask member processing and the substrate transport.
- the foreign matter can be prevented from adhering, and further, when peeling and removing, the foreign matter adhering before bonding can be removed together, and the failure rate of the device can be reduced.
- another organic electronic device manufacturing method described above utilizes a functional layer forming step of patterning a functional layer containing an organic material on the first electrode after the mask forming step, and the mask member described above. And a second electrode forming step of forming a second electrode on the functional layer.
- the above-described method for manufacturing another organic electronic element may further include a sealing film forming step of forming a sealing film on the second electrode using the mask member described above.
- the mask member can be used as a mask for forming a sealing film, and since there is no need to set a shadow mask for forming a sealing film as in the past, continuous productivity is further improved. can do.
- the above-described method for manufacturing another organic electronic element may further include a mask peeling step for peeling the mask member from the base material.
- the organic electronic device according to one aspect of the present invention is manufactured by the above-described method for manufacturing an organic electronic device or the above-described method for manufacturing another organic electronic device.
- FIG. 1A, FIG. 1B, FIG. 1C, FIG. 1D, FIG. 1E, FIG. 1F, and FIG. 1G relate to the first embodiment.
- FIG. 2 is a view showing an intermediate product for the organic EL element after the mask forming step shown in FIG.
- FIG. 3 is a view showing a long base material (roll base material) on which a plurality of intermediate products for the organic EL element after the mask formation step shown in FIG. 5A shows an intermediate product for the organic EL element after the mask formation step shown in FIG. 1E
- FIG. 4B shows a second electrode formation step shown in FIG. 1F.
- FIG. 5A, FIG. 5B, FIG. 5C, FIG. 5D, FIG. 5E, and FIG. 5F are organic EL elements according to modifications of the first embodiment.
- FIG. 6 (a), FIG. 6 (b), FIG. 6 (c), FIG. 6 (d), FIG. 6 (e), FIG. 6 (f) and FIG. 6 (g) relate to the second embodiment.
- FIG. 7E, and FIG. 7F are organic EL elements according to modifications of the second embodiment. It is a figure (sectional drawing) which shows the manufacturing method of (organic electronic element).
- FIG. 8 is an intermediate product for an organic EL device according to a modification, and shows the intermediate product corresponding to FIG. 2 from above.
- FIG. 9 is an intermediate product for an organic EL element according to a modification, and shows the intermediate product corresponding to FIG. 2 from above.
- FIG. 1 is a diagram (sectional view) showing a method for manufacturing an organic EL element (organic electronic element) according to the first embodiment
- FIG. 2 shows the organic EL element shown in FIG. 1 (e) from above
- FIG. 3 is a figure which shows the elongate base material (roll base material) which arranges the organic EL element shown in FIG.1 (e) two-dimensionally from upper direction.
- the organic EL element 1 of this example uses the base material 10 side as a light emitting surface.
- a film is formed by using a continuous conveyance method such as a roll-to-roll method, by vapor deposition, sputtering, ion plating, plating, transfer, etc.
- An anode layer (first electrode layer) 21 for the organic EL section 20 is formed on the substrate 10 (flexible substrate, flexible substrate) having a shape.
- a lead electrode layer 22A bonded to a cathode layer (second electrode layer) to be described later may be patterned on the film-like substrate 10.
- the anode layer 21 and the lead electrode layer 22A may be electrically insulated, may be spatially separated in the longitudinal direction X of the base material 10, and are separated via an insulating layer. (First electrode forming step).
- the width direction of the substrate 10 is Y.
- the film-like substrate 10 examples include materials having optical transparency such as PEN (polyethylene naphthalate) and PET (polyethylene terephthalate).
- the light emitting area of the anode layer 21 is, for example, an electrode exhibiting light transmittance, more specifically, ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), Examples thereof include a conductive metal oxide thin film made of a relatively transparent material.
- a mesh electrode in which metal is formed in a mesh shape can also be used for the light emitting area of the anode layer 21.
- the region other than the light emitting area of the anode layer 21 and the extraction electrode layer 22A may be made of the same material as the light emitting area of the anode layer 21, may be made of a different material, and may be opaque.
- an organic material is formed on the anode layer 21 or on the anode layer 21 and the extraction electrode layer 22A by a coating method (for example, an inkjet printing method, a slit coating method, a spray method, or a screen printing method).
- the light emitting layer 23 for the EL portion 20 is patterned.
- a functional layer such as a hole injection layer, a hole transport layer, or an electron blocking layer may be provided between the light emitting layer 23 and the anode layer 21.
- a functional layer such as an electron injection layer, an electron transport layer, or a hole blocking layer may be provided between the light emitting layer 23 and a cathode layer 22 described later.
- an insulating layer having an electrical resistance larger than the electrical resistance in the stacking direction in the region where the light emitting layer and the functional layer in the light emitting region are stacked is provided between the anode layer 21 and the cathode layer 22 in a region other than the light emitting region. It may be.
- the edge portion 23a on one side in the longitudinal direction X of the light emitting layer 23 or the functional layer is exposed to the edge portion 21a on one side in the longitudinal direction X of the anode layer 21 to obtain a lead wiring connection portion.
- the edge portion 23b on the other side in the longitudinal direction X of the light emitting layer 23 or the functional layer is exposed to expose the edge portion 22b on the other side in the longitudinal direction X of the lead electrode layer 22A. It is formed shorter than the edge 22b so as to obtain a portion.
- the edge 23c on one side in the width direction Y of the light emitting layer 23 or the functional layer is formed longer than the edge 21c so as to cover the edge 21c on one side in the width direction Y of the anode layer 21.
- the edge 23d on the other side in the width direction Y of the light emitting layer 23 is formed longer than the edge 21d so as to cover the edge 21d on the other side in the width direction Y of the anode layer 21.
- the light emitting layer 23 may also be deposited between the anode layer 21 and the extraction electrode layer 22A (functional layer forming step).
- the light emitting layer 23 or the functional layer exposes at least a part 21 ⁇ / b> A of the anode layer 21 on the side edge 21 a side in the longitudinal direction X of the anode layer 21, and leads the wiring connection portion.
- the light emitting layer 23 or the functional layer may be formed in the longitudinal direction X of the extraction electrode layer 22A so that at least a part 21A on the edge 21a side of the anode layer 21 is exposed. It is formed so as to expose at least a part of the lead electrode layer 22A on the side of the edge 22b so that at least a part 22B of the lead electrode layer 22A on the side of the other edge 22b is exposed to obtain a lead wiring connection part. It may be.
- the light emitting layer 23 includes various known organic EL materials such as a low molecular type and a high molecular type.
- the anode layer 21 and the light emitting layer 23 or the four sides of the functional layer are formed in the opening region.
- a mask member 30 with an opening is formed on the substrate 10 so as to surround the substrate.
- the mask member 30 with an opening is a lattice-like mask member that intersects the longitudinal direction X and the width direction Y of the substrate 10.
- the mask member 30 is formed so as to cover the anode layer 21 and the light emitting layer 23 or the edges 21a and 23a in the functional layer.
- the mask member 30 is formed so as to surround the light emitting layer 23 or the edge 23b of the functional layer.
- the opening of the mask member 30 may be any shape, and may be, for example, circular or elliptical as shown in FIG.
- a cathode layer 22 to be described later is formed in an opening shape, so that a light emitting region having an arbitrary shape, that is, an arbitrary light emission pattern can be obtained depending on the opening shape.
- the mask member 30 may be formed so that the opening overlaps 22B. Further, as shown in FIG. 8, on the edge 21a side of the anode layer 21, a mask member 30 is formed so that the opening does not overlap with a portion 21A where the anode layer 21 is exposed (extract wiring connection portion) 21A. May be.
- the lead electrode layer 22A of the cathode layer 22 may be omitted. 1, 8, and 9, the opening of the mask member 30 may not overlap the exposed portion of the anode layer 21, and the opening of the mask member 30 may overlap the exposed portion of the anode layer 21. Form may be sufficient. In this case, an insulating layer may be provided between the anode layer 21 and the cathode layer 22.
- an opening is formed on at least a part of the light emitting layer 23 or the functional layer and on at least a part of the anode layer 21 via the light emitting layer 23 or the functional layer. Or what is necessary is just to form the mask member 30 on the base material 10 so that the edge parts 21a and 23a of at least 1 side in the said functional layer may be covered.
- a first releasable release sheet 32A, a flexible mask film 31, and a second re-release sheet first, as shown in FIG. 1B and FIG. 1C, a first releasable release sheet 32A, a flexible mask film 31, and a second re-release sheet.
- the peelable release sheet 32 ⁇ / b> B and the carrier film 33 are bonded together in order to produce a bonded film 34 in which the release sheet 32 ⁇ / b> A and the mask film 31 are processed into the mask member 30.
- the mask member 30 is produced by cutting an opening region from the release sheet 32 ⁇ / b> A and the mask film 31.
- the mask member 30 covers the anode layer 21 and the light emitting layer 23 or the edge portions 21a and 23a of the functional layer, and the mask member 30 covers the light emitting layer 23 or the above.
- the bonding film 34 is bonded onto the base material 10 so as to surround the edge 23b in the functional layer.
- the releasable release sheet 32B and the carrier film 33 in the bonding film 34 are peeled from the mask member 30 (mask formation process).
- the material of the mask film 31 that is, the material of the mask member 30, a material having the same linear thermal expansion coefficient as that of the base material may be selected so that peeling or wrinkling does not occur due to the temperature during the second electrode formation process it can.
- the material for the mask member 30 include PEN and PET.
- the mask member 30 can also be a plastic film having a glass transition temperature higher than the temperature during the second electrode formation process.
- the material of the mask member 30 includes polyimide, fluororesin, and the like.
- the mask member 30 may be a metal foil, particularly a composite member in which a metal and a plastic film are laminated, or a glass cloth.
- Examples of the releasable release sheets 32A and 32B include acrylic, silicon, and polyolefin.
- Examples of the material of the carrier film 33 include PET, PC (polycarbonate), PS (polystyrene), and PE (polyethylene).
- an organic EL is formed on the light emitting layer 23 or the functional layer as shown in FIG. 1 (f) by vapor deposition, sputtering, ion plating, plating, transfer, or the like.
- a cathode layer 22 for the portion 20 is formed.
- the mask member 30 is used as a mask (second electrode forming step).
- the cathode layer 22 include an electrode exhibiting light reflectivity, more specifically, a conductive metal thin film made of a metal material.
- the cathode layer 22 is preferably Al, an Al alloy (such as AlNd), Ag, or an Ag alloy (such as AgPaCu).
- the mask member 30 is peeled from the substrate 10 as shown in FIG. 1 (g) (mask peeling step).
- the mask member 30 may be peeled off after forming the sealing film on the cathode layer 22 using the mask member 30 (sealing film forming step).
- an inorganic film having a moisture permeation barrier property such as silicon oxide such as SiOx, SiOxNy, and SiNx, silicon oxynitride, silicon nitride (carbon may be included in the composition), and aluminum such as AlxOy An oxide etc. are mentioned.
- Examples of the method for forming the sealing film include a CVD method, a sputtering method, a vapor deposition method, and a method of forming a film by coating a precursor and applying energy such as light and heat.
- an organic layer such as an acrylic resin may be formed in order to planarize or suppress pinhole penetration of the inorganic film.
- the organic layer may contain a getter material having a moisture trapping function such as a metal oxide, a metal complex, or zeolite.
- the flexible mask member 30 can prevent the light emitting layer 23 or the film surface of the functional layer from coming into contact with the back surface of the substrate 10, and further, the light emitting layer 23 or It can prevent that the film surface of the said functional layer contacts a roll directly.
- the lattice-shaped mask member 30 can suppress the occurrence of slack, and the film surface of the light emitting layer 23 or the functional layer is the base material even in the center portion in the width direction Y. 10 can be prevented from contacting the back surface. As a result, it is possible to prevent the film surface of the light emitting layer 23 or the functional layer from being physically or chemically damaged (protection of the film surface).
- the film of the cathode layer 22 is formed by the flexible mask member 30. It can prevent that a surface contacts the back surface of the base material 10, Furthermore, it can prevent that the film
- the lattice-shaped mask member 30 can suppress the occurrence of sagging, and the film surface of the cathode layer 22 on the back surface of the base material 10 even in the center portion in the width direction Y. Contact can be prevented. As a result, the film surface of the cathode layer 22 can be prevented from being physically or chemically damaged.
- the mask member 30 can be used as a mask for forming the cathode layer 22, and for the formation of the cathode layer 22 as in the past. Since there is no need to set a shadow mask, continuous productivity can be improved (improvement of continuous productivity).
- the mask member 30 covers the anode layer 21 and the light emitting layer 23 or the edges 21a and 23a in the functional layer, when the mask member 30 is used as a mask for forming the cathode layer 22, Contact with the cathode layer 22 can be prevented, and a connection portion for lead-out wiring can be formed on the edge portion 21 a of the anode layer 21. Further, since the mask member 30 covers the edge portion 22b in a part of the cathode layer 22, a connection portion for the lead-out wiring can be formed on the edge portion 22b of the cathode layer 22.
- FIG. 5 is a diagram (cross-sectional view) showing a method for manufacturing an organic EL element (organic electronic element) according to a modification of the first embodiment.
- the method for manufacturing the organic EL element of this modification example is different from the method for manufacturing the organic EL element of the first embodiment in place of the mask forming steps shown in FIGS. 1B to 1E.
- the second embodiment is different from the first embodiment in that it includes a mask forming process shown in FIG.
- the first electrode forming step and the functional layer forming step shown in FIG. 5A are the same as the first electrode forming step and the functional layer forming step shown in FIG. 1A, and the first electrode forming step and the functional layer forming step shown in FIG.
- the two-electrode forming step is the same as the second electrode forming step shown in FIG. 1 (f), and the mask peeling step shown in FIG. 5 (f) is the same as the mask peeling step shown in FIG. 1 (g).
- a releasable release sheet 32A and a flexible mask film 31 are sequentially formed so as to cover the anode layer 21 and the light emitting layer 23 or the functional layer. Affix to material 10.
- the release sheet 32 ⁇ / b> A and the mask film 31 are processed into a mask member 30.
- the mask member 30 covers the anode layer 21 and the light emitting layer 23 or the edge portions 21a and 23a of the functional layer, and the mask member 30 surrounds the light emitting layer 23 or the edge portion 23b of the functional layer.
- the mask member 30 is produced by cutting off the opening region from the release sheet 32 ⁇ / b> A and the mask film 31.
- FIG. 6 is a diagram (sectional view) showing a method for manufacturing an organic EL element (organic electronic element) according to the second embodiment.
- the manufacturing method of the organic EL element of the second embodiment is different from that of the first embodiment in that the order of the functional layer forming step and the mask forming step is different in the manufacturing method of the organic EL element of the first embodiment.
- the anode layer 21 for the organic EL portion 20 is patterned. Furthermore, the lead electrode layer 22A bonded to the cathode layer (second electrode layer) may be patterned on the film-like substrate 10 (first electrode forming step).
- the mask member 30 with an opening is formed so as to surround the four sides of the anode layer 21 in the opening region. Form on top.
- the mask member 30 with an opening is a lattice-like mask member that intersects the longitudinal direction X and the width direction Y of the substrate 10.
- the mask member 30 is formed so as to cover the edge portion 21 a in the anode layer 21.
- the first releasable release sheet 32A, the flexible mask film 31, and the second re-release sheet The peelable release sheet 32 ⁇ / b> B and the carrier film 33 are bonded together in order to produce a bonded film 34 in which the release sheet 32 ⁇ / b> A and the mask film 31 are processed into the mask member 30.
- the mask member 30 is produced by cutting an opening region from the release sheet 32 ⁇ / b> A and the mask film 31.
- a bonding film is formed so that the mask member 30 covers the edge portion 21 a of the anode layer 21 and the mask member 30 covers the edge portion 22 b of the cathode layer 22. 34 is bonded onto the substrate 10.
- the releasable release sheet 32B and the carrier film 33 in the bonding film 34 are peeled from the mask member 30 (mask formation process).
- the anode layer 21 and the extraction electrode layer 22A are applied by a coating method (for example, an ink jet printing method, a slit coating method, a spray method, a screen printing method) using a roll-to-roll method.
- a coating method for example, an ink jet printing method, a slit coating method, a spray method, a screen printing method
- the light emitting layer 23 for the organic EL portion 20 or the functional layer is patterned.
- the edge portion 23a of the light emitting layer 23 or the functional layer is formed so as to contact the mask member 30, so that the edge portion 21a of the anode layer 21 is exposed to obtain a lead-out wiring connection portion. It is formed shorter.
- the light emitting layer 23 or the edge portion 23b of the functional layer is formed so as to provide a space between the light emitting layer 23 and the mask member 30, thereby exposing the edge portion 22b of the cathode layer 22 to obtain a lead wiring connection portion.
- the edge 23 c of the light emitting layer 23 is formed longer than the edge 21 c so as to cover the edge 21 c of the anode layer 21, and the edge 23 d of the light emitting layer 23 is the edge 21 d of the anode layer 21. Is longer than the edge portion 21d (functional layer forming step).
- the organic EL portion 20 is formed on the light emitting layer 23 by using a roll-to-roll method by vapor deposition, sputtering, ion plating, plating, transfer, or the like.
- the cathode layer 22 is formed.
- the mask member 30 is used as a mask (second electrode forming step).
- the mask member 30 is peeled from the substrate 10 (mask peeling step).
- the mask member 30 may be peeled off after forming the sealing film on the cathode layer 22 using the mask member 30 (sealing film forming step).
- FIG. 7 is a diagram (cross-sectional view) illustrating a method for manufacturing an organic EL element (organic electronic element) according to a modification of the second embodiment.
- the organic EL element manufacturing method of this modification is the same as that of the organic EL element manufacturing method according to the second embodiment, except that the mask forming step shown in FIGS. 6B to 6E is replaced with FIGS.
- the second embodiment is different from the second embodiment in that it includes a mask formation step shown in FIG. 7A is the same as the first electrode forming process shown in FIG. 6A, and the functional layer forming process and the second electrode forming process shown in FIG. It is the same as the functional layer forming step and the second electrode forming step shown in FIG. 6 (f), and the mask peeling step shown in FIG. 7 (f) is the same as the mask peeling step shown in FIG. 6 (g).
- a releasable release sheet 32 ⁇ / b> A and a flexible mask film 31 are sequentially bonded onto the base material 10 so as to cover the anode layer 21.
- the release sheet 32 ⁇ / b> A and the mask film 31 are processed into a mask member 30.
- the mask member 30 covers the edge portion 21a of the anode layer 21, the mask member 30 covers the edge portion 22b of the cathode layer 22, and the mask member 30 covers the edge of the anode layer 21.
- the mask member 30 is produced by cutting out the opening region from the release sheet 32A and the mask film 31 so as to surround the portions 21c and 21d.
- the organic EL device manufacturing method of this modification can also obtain the same advantages as the organic EL device manufacturing methods of the first and second embodiments.
- anode / light emitting layer / cathode b) anode / hole injection layer / light emitting layer / cathode c) anode / hole injection layer / light emitting layer / electron injection layer / cathode d) anode / hole injection layer / light emitting layer / Electron transport layer / electron injection layer / cathode e) anode / hole injection layer / hole transport layer / light emitting layer / cathode f) anode / hole injection layer / hole transport layer / light emitting layer / electron injection layer / cathode g ) Anode / hole injection layer / hole transport layer / light emitting layer / electron transport layer / electron injection layer / cathode h) Anode / light emitting layer / electron injection layer / cathode i) Anode / light emitting layer / electron transport layer / electron injection Layer / cathode i)
- the organic EL element is exemplified by a manufacturing method in which an anode layer is disposed on the substrate side with respect to the light emitting layer, and a cathode layer is disposed on the opposite side of the light emitting layer from the substrate.
- the present invention is also applicable to a manufacturing method in which a cathode layer is disposed on the substrate side with respect to the light emitting layer and an anode layer is disposed on the opposite side of the light emitting layer from the substrate.
- the method for manufacturing an organic EL element is exemplified, but the feature of the present invention is also applied to a method for manufacturing an organic solar cell (organic electronic element) or an organic transistor (organic electronic element). Applicable.
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Abstract
Description
図1は、第1の実施形態に係る有機EL素子(有機電子素子)の製造方法を示す図(断面図)であり、図2は、図1(e)に示す有機EL素子を上方から示す図である。また、図3は、図1(e)に示す有機EL素子を複数2次元配列する長尺基材(ロール基材)を上方から示す図である。この一例の有機EL素子1は、基材10側を発光面とする。
図5は、第1の実施形態の変形例に係る有機EL素子(有機電子素子)の製造方法を示す図(断面図)である。この変形例の有機EL素子の製造方法は、第1の実施形態の有機EL素子の製造方法において図1(b)~図1(e)に示すマスク形成工程に代えて図5(b)~図5(d)に示すマスク形成工程を含む点で第1の実施形態と異なる。なお、図5(a)に示す第1電極形成工程及び機能層形成工程は図1(a)に示す第1電極形成工程及び機能層形成工程と同一であり、図5(e)に示す第2電極形成工程は図1(f)に示す第2電極形成工程と同一であり、図5(f)に示すマスク剥離工程は図1(g)に示すマスク剥離工程と同一である。
図6は、第2の実施形態に係る有機EL素子(有機電子素子)の製造方法を示す図(断面図)である。第2の実施形態の有機EL素子の製造方法は、第1の実施形態の有機EL素子の製造方法において機能層形成工程とマスク形成工程との順序が異なる点で第1の実施形態と異なる。
図7は、第2の実施形態の変形例に係る有機EL素子(有機電子素子)の製造方法を示す図(断面図)である。この変形例の有機EL素子の製造方法は、第2の実施形態の有機EL素子の製造方法において図6(b)~図6(e)に示すマスク形成工程に代えて図7(b)~図7(d)に示すマスク形成工程を含む点で第2の実施形態と異なる。なお、図7(a)に示す第1電極形成工程は図6(a)に示す第1電極形成工程と同一であり、図7(e)に示す機能層形成工程及び第2電極形成工程は図6(f)に示す機能層形成工程及び第2電極形成工程と同一であり、図7(f)に示すマスク剥離工程は図6(g)に示すマスク剥離工程と同一である。
a)陽極/発光層/陰極
b)陽極/正孔注入層/発光層/陰極
c)陽極/正孔注入層/発光層/電子注入層/陰極
d)陽極/正孔注入層/発光層/電子輸送層/電子注入層/陰極
e)陽極/正孔注入層/正孔輸送層/発光層/陰極
f)陽極/正孔注入層/正孔輸送層/発光層/電子注入層/陰極
g)陽極/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
h)陽極/発光層/電子注入層/陰極
i)陽極/発光層/電子輸送層/電子注入層/陰極
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。
Claims (10)
- ロールツーロール方式を用いて、可撓性を有する有機電子素子を製造する方法であって、
可撓性の基材上に第1の電極をパターン形成する第1電極形成工程と、
前記第1の電極上に有機材料を含む機能層をパターン形成する機能層形成工程と、
前記機能層の少なくとも一部上、かつ、前記機能層を介して前記第1の電極の少なくとも一部上に開口を有し、前記第1の電極及び前記機能層における少なくとも1辺の縁部を覆うように、可撓性を有するマスク部材を前記基材上に形成するマスク形成工程と、を含む、有機電子素子の製造方法。 - 前記マスク形成工程は、
第1の再剥離可能な離形シートと、可撓性を有するマスクフィルムと、第2の再剥離可能な離形シートと、キャリアフィルムとを順に貼り合わせ、前記第1の再剥離可能な離形シート及び前記マスクフィルムを、前記開口を有する前記マスク部材に加工した貼合フィルムを作製する工程と、
前記第1の電極及び前記機能層における少なくとも1辺の縁部を前記マスク部材で覆うように、前記貼合フィルムを前記基材上に貼り合わせる工程と、
前記貼合フィルムにおける前記第2の再剥離可能な離形シート及び前記キャリアフィルムを前記マスク部材から剥離する工程と、を含む、請求項1に記載の有機電子素子の製造方法。 - 前記マスク形成工程は、
前記第1の電極及び前記機能層を覆うように、再剥離可能な離形シートと、可撓性を有するマスクフィルムとを順に前記基材上に貼り合わせる工程と、
前記再剥離可能な離形シート及び前記マスクフィルムを、前記開口を有する前記マスク部材に加工する工程と、を含む、請求項1に記載の有機電子素子の製造方法。 - 前記マスク部材を利用して、前記機能層上に第2の電極を形成する第2電極形成工程を更に含む、請求項1~3の何れか1項に記載の有機電子素子の製造方法。
- ロールツーロール方式を用いて、可撓性を有する有機電子素子を製造する方法であって、
可撓性の基材上に第1の電極をパターン形成する第1電極形成工程と、
前記第1の電極の少なくとも一部上に開口を有し、前記第1の電極における少なくとも1辺の縁部を覆うように、可撓性を有するマスク部材を前記基材上に形成するマスク形成工程と、を含む、有機電子素子の製造方法。 - 前記マスク形成工程は、
第1の再剥離可能な離形シートと、可撓性を有するマスクフィルムと、第2の再剥離可能な離形シートと、キャリアフィルムとを順に貼り合わせ、前記第1の再剥離可能な離形シート及び前記マスクフィルムを、前記開口を有する前記マスク部材に加工した貼合フィルムを作製する工程と、
前記第1の電極における少なくとも1辺の縁部を前記マスク部材で覆うように、前記貼合フィルムを前記基材上に貼り合わせる工程と、
前記貼合フィルムにおける前記第2の再剥離可能な離形シート及び前記キャリアフィルムを前記マスク部材から剥離する工程と、を含む、請求項5に記載の有機電子素子の製造方法。 - 前記マスク形成工程は、
前記第1の電極を覆うように、再剥離可能な離形シートと、可撓性を有するマスクフィルムとを順に前記基材上に貼り合わせる工程と、
前記再剥離可能な離形シート及び前記マスクフィルムを、前記開口を有する前記マスク部材に加工する工程と、を含む、請求項5に記載の有機電子素子の製造方法。 - 前記マスク形成工程後に、前記第1の電極上に有機材料を含む機能層をパターン形成する機能層形成工程と、
前記マスク部材を利用して、前記機能層上に第2の電極を形成する第2電極形成工程と、を更に含む、請求項5~7の何れか1項に記載の有機電子素子の製造方法。 - 前記マスク部材を利用して、前記第2の電極上に封止膜を形成する封止膜形成工程を更に含む、請求項4又は8に記載の有機電子素子の製造方法。
- 前記マスク部材を前記基材から剥離するマスク剥離工程を更に含む、請求項4、8、及び、9の何れか1項に記載の有機電子素子の製造方法。
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| EP16853534.2A EP3361831A4 (en) | 2015-10-08 | 2016-10-03 | METHOD OF MANUFACTURING AN ORGANIC ELECTRONIC ELEMENT AND ORGANIC ELECTRONIC ELEMENT |
| US15/766,487 US10651430B2 (en) | 2015-10-08 | 2016-10-03 | Organic electronic element manufacturing method and organic electronic element |
| CN201680056935.9A CN108141937B (zh) | 2015-10-08 | 2016-10-03 | 有机电子元件的制造方法 |
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| JP6660702B2 (ja) | 2020-03-11 |
| US20180294444A1 (en) | 2018-10-11 |
| CN108141937B (zh) | 2020-05-22 |
| JP2017073308A (ja) | 2017-04-13 |
| EP3361831A1 (en) | 2018-08-15 |
| US10651430B2 (en) | 2020-05-12 |
| KR20180066121A (ko) | 2018-06-18 |
| EP3361831A4 (en) | 2019-07-03 |
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