WO2016111145A1 - 有機elパネルの製造方法 - Google Patents
有機elパネルの製造方法 Download PDFInfo
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- WO2016111145A1 WO2016111145A1 PCT/JP2015/085557 JP2015085557W WO2016111145A1 WO 2016111145 A1 WO2016111145 A1 WO 2016111145A1 JP 2015085557 W JP2015085557 W JP 2015085557W WO 2016111145 A1 WO2016111145 A1 WO 2016111145A1
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- film
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000010410 layer Substances 0.000 claims abstract description 120
- 239000000758 substrate Substances 0.000 claims abstract description 84
- 238000000576 coating method Methods 0.000 claims abstract description 52
- 239000011248 coating agent Substances 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 239000002346 layers by function Substances 0.000 claims abstract description 15
- 239000011368 organic material Substances 0.000 claims abstract description 13
- 238000005339 levitation Methods 0.000 claims description 34
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 238000005188 flotation Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 64
- 239000000463 material Substances 0.000 description 43
- 238000005401 electroluminescence Methods 0.000 description 41
- 238000002347 injection Methods 0.000 description 28
- 239000007924 injection Substances 0.000 description 28
- 230000005525 hole transport Effects 0.000 description 12
- 238000012795 verification Methods 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 6
- 239000011112 polyethylene naphthalate Substances 0.000 description 6
- 238000007667 floating Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 238000007665 sagging Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- -1 Polyethylene Naphthalate Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 230000037303 wrinkles Effects 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
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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
- H10K71/135—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/02—Platens
- B41J11/06—Flat page-size platens or smaller flat platens having a greater size than line-size platens
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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
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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
- H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
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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
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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]
- H10K50/14—Carrier transporting layers
- H10K50/15—Hole transporting layers
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- H—ELECTRICITY
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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]
- H10K50/14—Carrier transporting layers
- H10K50/16—Electron transporting layers
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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]
- H10K50/17—Carrier injection layers
- H10K50/171—Electron injection layers
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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
- H10K50/81—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
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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
- 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
Definitions
- the present invention relates to a method for manufacturing an organic EL panel.
- An organic EL panel having a light emitting layer (functional layer) containing an organic EL (Electro-Luminescence) material between a pair of electrode layers is known.
- This type of organic EL panel may also have various functional layers such as a hole injection layer containing an organic material, a hole transport layer, an electron transport layer, and an electron injection layer between a pair of electrode layers.
- This type of organic EL panel may be formed on a film-like substrate (a flexible substrate or a flexible substrate) to form a film.
- Non-Patent Document 1 discloses a die coater coating method (slit coat coating method).
- a roll-to-roll configuration comprising an unwinding roller 10 and a winding roller 13 and a film-like substrate including a substrate and an electrode are provided by conveying rollers 11, 12, 14, and 15.
- the material is transported, and a coating liquid containing an organic EL material is applied to the substrate by the slit coat applicator 30X to form a light emitting layer thin film.
- the substrate is fixed and stabilized using the backup roll 15.
- Non-Patent Document 1 The slit coat coating method described in Non-Patent Document 1 is suitable when a highly viscous coating solution is used. By the way, in order to form a thinner thin film, it is conceivable to use a coating solution having a low viscosity. However, when a low-viscosity coating liquid is used in the slit coat coating method described in Non-Patent Document 1, dripping occurs.
- the film thickness becomes non-uniform due to the mechanical vibration of the backup roll, and the emission luminance becomes non-uniform (light emission) village).
- the suction stage is used, the suction stage is temporarily sucked, so that intermittent transport is performed, and productivity is lowered.
- the substrate is transported horizontally and the coating solution is applied to the upper surface of the substrate by an applicator disposed above the substrate.
- an applicator disposed above the substrate.
- the substrate is horizontally transported by two transport rolls separated by a predetermined distance, and the coating liquid is applied to the upper surface of the base material from above between the two transport rolls without using the backup roll and the suction stage.
- the base material hangs down due to its own weight between the two transport rolls, and the base material vibrates up and down. Due to this vibration, the film thickness of the coating film becomes non-uniform, and as a result, the emission luminance becomes non-uniform (light emission unevenness).
- an object of the present invention is to provide a method for manufacturing an organic EL panel capable of reducing non-uniformity of light emission luminance (light emission unevenness).
- the method for producing an organic EL panel of the present invention is a method for producing an organic EL panel having a functional layer including at least a light emitting layer containing an organic material, wherein a flexible base material is formed using a roll-to-roll method. It has a coating process in which a functional layer is formed by applying a coating solution containing an organic material to a base material by an inkjet applicator that is transported horizontally and disposed above the base material. The substrate is air levitated by the air levitation stage arranged in (1), and the coating liquid is applied to the substrate.
- This coating process not only forms a light emitting layer (functional layer) containing an organic EL material, but also forms a functional layer such as a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer containing an organic material. Is also applicable.
- the base material since the base material is air-lifted, the base material can be prevented from sagging due to its own weight, and the base material can be prevented from vibrating up and down. Therefore, non-uniformity of the coating film thickness due to vertical vibration of the substrate can be reduced, and as a result, non-uniformity of light emission luminance (light emission unevenness) can be reduced.
- a coating film (functional layer) can be formed continuously and stably in a roll-to-roll method, so that there is no uneven emission luminance (light emission unevenness).
- the organic EL panel can be continuously produced with high throughput.
- the air levitation stage described above may be in the form of a porous material.
- the air levitation stage is used not for transporting the base material, but for the purpose of causing the base material to float by its own weight.
- a relatively large amount of air generated by relatively large holes formed by processing is too strong.
- the amount of the base material that hangs down by its own weight can be levitated by the relatively small amount of air generated by the relatively small holes of the porous material.
- the above-described upper and lower vibration amount (displacement amount) of the base material may be 70 ⁇ m ( ⁇ 35 ⁇ m) or less. According to this embodiment, since the vertical vibration amount of the substrate is as small as 70 ⁇ m (displacement amount ⁇ 35 ⁇ m) or less, it is possible to reduce the non-uniformity of the coating film thickness due to the vertical vibration of the substrate. In addition, non-uniformity of light emission luminance (light emission unevenness) can be reduced.
- the distance between the above air levitation stage and the above base material may be 30 ⁇ m or more and 1 mm or less. According to this aspect, it is possible to appropriately suppress the vertical vibration of the film caused by the blown air between the air levitation stage and the base material. If the distance is less than 30 ⁇ m, there is a risk of scratching the back surface of the substrate due to contact between the air levitation stage and the substrate. Conversely, if the distance is greater than 1 mm, the air layer between the air levitation stage and the substrate is It becomes non-uniform and the effect of suppressing vertical vibration is reduced.
- the viscosity of the coating solution described above may be in the form of 1 cp or more and 20 cp or less. According to this embodiment, even with a low-viscosity coating liquid of 1 cp or more and 20 cp or less, it is possible to reduce non-uniformity in the thickness of the coating film due to vertical vibration of the substrate, and as a result, light emission Luminance nonuniformity (light emission unevenness) can be reduced. Moreover, dripping can be prevented as described above.
- the tensile force (tension) of the base material described above may be in a form of 20N or more and 150N or less. According to this aspect, since wrinkles and sagging in the transport direction do not occur in the film itself being transported when entering the air levitation stage, it is possible to form a stable and uniform coating film in a state where vertical vibration is suppressed. Become.
- the air wind speed by the above air levitation stage is 0.001 m / sec. It may be in the form of 0.3 m / sec or less. As described above, the air levitation stage is used not for conveying the base material but for floating the part where the base material hangs down due to its own weight. Thus, a relatively large amount of air generated by relatively large holes formed by processing is too strong. However, according to this embodiment, the wind speed of the air is 0.001 m / sec. Since it is as small as 0.3 m / sec or less, the portion of the base material that hangs down due to its own weight can be lifted.
- the present invention it is possible to reduce nonuniformity (light emission unevenness) of the light emission luminance of the organic EL panel.
- FIG. 1 is a view showing a method for manufacturing an organic EL panel according to an embodiment of the present invention
- FIG. 2 is a view of a processing region A shown in FIG.
- FIG. 3 is a cross-sectional view of an organic EL panel according to an embodiment.
- the organic EL panel 100 of the present embodiment includes an anode layer 102, a light emitting layer (functional layer) 103, a film-like substrate (a flexible substrate or a flexible substrate) 101, The cathode layer 104 is laminated in order.
- the material of the film-like substrate 101 include a plastic having transparency, and more specifically, PEN (Polyethylene Naphthalate).
- the film-like substrate 101 typically has a thickness of about 100 ⁇ m.
- a light-transmitting electrode more specifically, a conductive metal oxide thin film made of a relatively transparent material such as ITO (Tin-doped Indium Oxide) and IZO (indium zinc oxide) is used. Can be mentioned.
- the light emitting layer 103 includes various known organic EL materials such as a low molecular type and a high molecular type.
- Examples of the cathode layer 104 include an electrode exhibiting light reflectivity, more specifically, a conductive metal thin film made of a metal material.
- a process (coating process) for forming a light emitting layer 103 on a film-like substrate 110 including a substrate 101 and an anode layer 102 will be described.
- the step of forming the layer 104 is omitted.
- the anode layer 102 and the cathode layer 104 can be formed by a known method such as a vapor deposition method and a coating method for forming an electrode layer, for example.
- the film base 110 is horizontally conveyed using a roll-to-roll method. Specifically, the film base 110 is unwound from the unwinding roller 10, the film base 110 is horizontally transported by the transport rollers 11 and 12 in the processing area A, and is wound by the take-up roller 13.
- the conveyance speed of the film substrate 110 is, for example, 2 m / min. 6 m / min.
- the tension set below and applied in the conveying direction of the film substrate 110 is set to, for example, 20N to 150N, preferably 30N to 100N.
- the tension (tensile force) applied in the transport direction of the film substrate 110 may be adjusted by a tension adjusting mechanism (not shown).
- the film base 110 is air-lifted by the three air levitation stages 20 arranged below the film base 110.
- Each of the air levitation stages 20 is made of porous carbon, and blows out air from a plurality of minute holes.
- the width Wa of the upper surface facing the film substrate 110 in the air levitation stage 20 is about 100 mm
- the length La is about 500 mm.
- the air blowing flow rate is 1 ⁇ 10 ⁇ 4 L / (cm 2 ⁇ sec.) Or more and 3 ⁇ 10 ⁇ 2 L / ( cm 2 ⁇ sec.) or less (wind speed conversion: 0.001 m / sec to 0.3 m / sec.), preferably 1 ⁇ 10 ⁇ 4 L / (cm 2 ⁇ sec.) to 1 ⁇ 10 ⁇ 2 L / (Cm 2 ⁇ sec.) Or less.
- the distance between the air levitation stage 20 and the film substrate 110 is set to 30 ⁇ m to 1 mm, preferably 50 ⁇ m to 500 ⁇ m.
- the vibration amount (maximum value-minimum value) of the film substrate 110 is 70 ⁇ m or less, preferably 40 ⁇ m or less.
- the amount of displacement of the film substrate 110 is ⁇ 35 ⁇ m or less, preferably ⁇ 20 ⁇ m or less.
- the air levitation stage 20 is used not for conveying the film base 110 but for floating the part where the film base 110 hangs down by its own weight. Thus, a relatively large amount of air generated by relatively large holes formed by processing is too strong. According to the air levitation stage 20 of the present embodiment, the amount of the film base 110 that hangs down by its own weight can be levitated by a relatively small amount of air generated by the relatively small holes of the porous material. .
- a relatively large amount of air generated by relatively large holes formed by processing may dry ink in the nozzles of the inkjet applicator 30 described later. This is not the case with the relatively small amount of air produced by the relatively small holes it has.
- the ink (coating liquid) containing the organic EL material is applied to the film substrate 110 by the inkjet applicator 30 disposed above the film substrate 110 and the air floating stage 20. Is applied to form the light emitting layer 103.
- the light emitting layer 103 typically includes a layer having a thickness of 20 nm to 100 nm after drying (for example, a thickness of 0.4 ⁇ m to 2 ⁇ m at the time of application).
- the inkjet applicator 30 has a plurality of nozzles arranged in the width Wf direction of the film substrate 110.
- the inkjet applicator 30 has a resolution of 600 dpi.
- ink having a relatively low viscosity with a viscosity of 1 cP to 20 cP, preferably 2 cP to 10 cP is used.
- a solution containing an organic EL material and an organic solvent is used as the ink.
- the organic EL material may be a low molecular material, a high molecular material, or a mixture of both.
- the organic solvent may be any solvent that dissolves the organic EL material, and is appropriately selected in consideration of the evaporation rate of the solvent, the surface tension and the viscosity of the solution, and the like.
- the organic solvent may be a single solvent or a mixed solvent.
- the film base 110 since the film base 110 is air-lifted, the film base 110 can be prevented from sagging due to its own weight, and the film base 110 can be vibrated up and down. Can be suppressed. Therefore, nonuniformity of the film thickness of the light emitting layer (coating film) 103 due to vertical vibration of the film substrate 110 can be reduced, and as a result, nonuniformity of light emission luminance (light emission unevenness) can be reduced. .
- the film base 110 is transported horizontally and the ink (coating liquid) is applied to the film base 110 from above, dripping can be prevented.
- the coating film (light emitting layer) 103 can be formed continuously and stably in a roll-to-roll method, the light emission luminance is not uniform (light emission unevenness). High-quality organic EL panels that do not have a high throughput can be continuously produced.
- an ink (application liquid) containing an organic EL material was applied on a glass substrate instead of the above-described film substrate 110 to form a light emitting layer.
- the polymer white light emitting material SCW140 (solid content concentration 7%, viscosity 5 cp) manufactured by Sumitomo Chemical was used as the ink, and the thickness of the light emitting layer after drying was set to 70 nm.
- vertical vibration was applied to the glass substrate. In this verification, the light emitting layer was irradiated with ultraviolet rays from an ultraviolet lamp, and the non-uniformity of emission luminance (light emission unevenness) was visually confirmed.
- the luminous intensity is uneven when the vertical vibration amount (maximum value ⁇ minimum value) is 130 ⁇ m (displacement amount ⁇ 65 ⁇ m), the vertical vibration amount is 70 ⁇ m (displacement amount ⁇ 35 ⁇ m), and The emission luminance was uniform when the vibration amount was 40 ⁇ m ( ⁇ 20 ⁇ m). From this, it is presumed that the unevenness of the emission luminance is reduced when the vertical vibration amount is 70 ⁇ m or less, preferably 40 ⁇ m or less, in other words, when the vertical displacement amount is ⁇ 35 ⁇ m or less, preferably ⁇ 20 ⁇ m or less. [Verification 2]
- the verification conditions for air levitation were as follows. Air blowing flow rate: 3 ⁇ 10 ⁇ 4 L / (cm 2 ⁇ sec.) (Wind speed conversion: 0.003 m / sec.) Distance between the air levitation stage 20 and the film substrate 110: 50 ⁇ m
- Other common verification conditions were as follows. Conveying speed of the film substrate 110: 6 m / min. Tension applied in the transport direction of the film substrate 110: 30N
- a laser displacement sensor is used instead of the ink jet applicator 30, and the vertical position of the film substrate 110 is set to 1 msec. The measurement was performed at intervals of 20 seconds, and the amount of vertical displacement of the film substrate 110 was measured. The verification result is shown in FIG.
- the vertical vibration amount (maximum value-minimum value) was 315 ⁇ m as shown by the curve 51.
- the vertical vibration amount was reduced to 17 ⁇ m as shown by the curve 50.
- the present invention is not limited to the above-described embodiment, and various modifications can be made.
- the light emitting layer coating process in an organic EL panel having a light emitting layer (functional layer) between a pair of electrodes has been exemplified, but the feature of the present invention is in various organic EL panels as described below.
- the present invention can also be applied to a coating process of a functional layer containing various organic materials such as a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer.
- 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 ink (coating liquid) containing the organic EL material for the light emitting layer is used as the organic material for the hole injection layer.
- the ink may be replaced with ink (coating liquid).
- the ink (coating liquid) containing the organic EL material for the light emitting layer contains the organic material for the hole transport layer.
- the film base 110 may be replaced with a film base including the substrate 101, the anode layer 102, and the hole injection layer 105.
- the film base 110 may be replaced with a film base including the substrate 101, the anode layer 102, the hole injection layer 105, and the hole transport layer 106.
- the ink (coating liquid) containing the organic EL material for the light emitting layer is replaced with the ink containing the organic material for the electron transport layer (
- the film base 110 may be replaced with a film base including the substrate 101, the anode layer 102, the hole injection layer 105, the hole transport layer 106, and the light emitting layer 103.
- the ink (coating liquid) containing the organic EL material for the light emitting layer is replaced with the ink containing the organic material for the electron injection layer ( Further, the film base 110 is replaced with a coating liquid), and the film includes a substrate 101, an anode layer 102, a hole injection layer 105, a hole transport layer 106, a light emitting layer 103, and an electron transport layer 107. What is necessary is just to replace with a base material.
- the organic EL panel has exemplified the manufacturing method in which the anode layer is disposed on the substrate side with respect to the light emitting layer, and the cathode layer is disposed on the side opposite to the substrate with respect to the light emitting layer.
- the feature of the invention can also be applied 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 characteristics of the present invention can also be applied to a manufacturing method in which a barrier layer is formed on one surface or both surfaces of a film substrate.
- porous carbon is exemplified as the material for the air levitation stage, but various porous materials that can blow out air are applicable.
- various conditions such as the air blowing flow rate, the number, size, and the interval of the air levitation stage, the interval between the air levitation stage and the film substrate, and the tension applied in the transport direction of the film substrate are exemplified.
- These assume a PEN film substrate having a thickness of 125 ⁇ m and a width of 320 mm.
- the upper and lower vibration amount of the film base material is 70 ⁇ m or less, in other words, the upper and lower displacement amount is ⁇ 35 ⁇ m or less. What is necessary is just to change these conditions suitably.
- DESCRIPTION OF SYMBOLS 10 Unwinding roller, 11, 12, 14 ... Conveyance roller, 13 ... Winding roller, 15 ... Backup roll (conveyance roller), 20 ... Air floating stage, 30 ... Inkjet applicator, 30X ... Slit coat applicator, 100 DESCRIPTION OF SYMBOLS ... Organic EL panel 101 ... Substrate 102 ... Anode layer 103 ... Light emitting layer 104 ... Cathode layer 105 ... Hole injection layer 106 ... Hole transport layer 107 ... Electron transport layer 108 ... Electron injection layer 110: Film substrate (substrate).
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Abstract
Description
[検証1]
[検証2]
エア吹き出し流量:3×10-4L/(cm2・sec.)(風速換算:0.003m/sec.)
エア浮上ステージ20とフィルム基材110との間隔:50μm
また、その他の共通の検証条件は以下の通りであった。
フィルム基材110の搬送速度:6m/min.
フィルム基材110の搬送方向に加えられるテンション:30N
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 (7)
- 有機材料を含む発光層を少なくとも含む機能層を有する有機ELパネルの製造方法であって、
ロールツーロール方式を用いて、可撓性を有する基材を水平搬送し、前記基材の上方に配置されたインクジェット塗布器によって、前記有機材料を含む塗布液を前記基材に塗布して、前記機能層を形成する塗布工程を有し、
前記塗布工程では、前記基材の下方に配置されたエア浮上ステージによって、前記基材をエア浮上させて、前記塗布液を前記基材に塗布する、
有機ELパネルの製造方法。 - 前記エア浮上ステージは、多孔質材料からなる、請求項1に記載の有機ELパネルの製造方法。
- 前記基材の上下の振動量は、70μm以下である、請求項1又は2に記載の有機ELパネルの製造方法。
- 前記エア浮上ステージと前記基材との間隔は、30μm以上1mm以下である、請求項3に記載の有機ELパネルの製造方法。
- 前記塗布液の粘度は、1cp以上20cp以下である、請求項3に記載の有機ELパネルの製造方法。
- 前記基材の引張力は、20N以上150N以下である、請求項3に記載の有機ELパネルの製造方法。
- 前記エア浮上ステージによるエアの風速は、0.001m/sec.以上0.3m/sec.以下である、請求項3に記載の有機ELパネルの製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/541,547 US10686162B2 (en) | 2015-01-07 | 2015-12-18 | Method for manufacturing organic EL panel |
KR1020177021431A KR20170101295A (ko) | 2015-01-07 | 2015-12-18 | 유기 el 패널의 제조 방법 |
CN201580072618.1A CN107211500B (zh) | 2015-01-07 | 2015-12-18 | 有机el面板的制造方法 |
EP15877018.0A EP3244702A4 (en) | 2015-01-07 | 2015-12-18 | Method for manufacturing organic el panel |
Applications Claiming Priority (2)
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JP2015001579A JP6254108B2 (ja) | 2015-01-07 | 2015-01-07 | 有機elパネルの製造方法 |
JP2015-001579 | 2015-01-07 |
Publications (1)
Publication Number | Publication Date |
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WO2016111145A1 true WO2016111145A1 (ja) | 2016-07-14 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2015/085557 WO2016111145A1 (ja) | 2015-01-07 | 2015-12-18 | 有機elパネルの製造方法 |
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US (1) | US10686162B2 (ja) |
EP (1) | EP3244702A4 (ja) |
JP (1) | JP6254108B2 (ja) |
KR (1) | KR20170101295A (ja) |
CN (1) | CN107211500B (ja) |
WO (1) | WO2016111145A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US10319909B2 (en) | 2015-01-07 | 2019-06-11 | Sumitomo Chemical Company, Limited | Method for manufacturing organic electronic element |
Families Citing this family (1)
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CN110961320A (zh) * | 2019-10-14 | 2020-04-07 | 信利光电股份有限公司 | 一种改善OC光阻mura的方法 |
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EP3244702A4 (en) | 2018-09-05 |
US10686162B2 (en) | 2020-06-16 |
KR20170101295A (ko) | 2017-09-05 |
US20180269432A1 (en) | 2018-09-20 |
EP3244702A1 (en) | 2017-11-15 |
CN107211500B (zh) | 2020-01-07 |
JP2016126963A (ja) | 2016-07-11 |
CN107211500A (zh) | 2017-09-26 |
JP6254108B2 (ja) | 2017-12-27 |
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