WO2015084073A1 - 유기전자장치용 기판의 제조 방법 - Google Patents
유기전자장치용 기판의 제조 방법 Download PDFInfo
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- WO2015084073A1 WO2015084073A1 PCT/KR2014/011830 KR2014011830W WO2015084073A1 WO 2015084073 A1 WO2015084073 A1 WO 2015084073A1 KR 2014011830 W KR2014011830 W KR 2014011830W WO 2015084073 A1 WO2015084073 A1 WO 2015084073A1
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- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- ISNYUQWBWALXEY-OMIQOYQYSA-N tsg6xhx09r Chemical compound O([C@@H](C)C=1[C@@]23CN(C)CCO[C@]3(C3=CC[C@H]4[C@]5(C)CC[C@@](C4)(O)O[C@@]53[C@H](O)C2)CC=1)C(=O)C=1C(C)=CNC=1C ISNYUQWBWALXEY-OMIQOYQYSA-N 0.000 description 1
- ZOYIPGHJSALYPY-UHFFFAOYSA-K vanadium(iii) bromide Chemical compound [V+3].[Br-].[Br-].[Br-] ZOYIPGHJSALYPY-UHFFFAOYSA-K 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 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
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical class [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
-
- 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
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/854—Arrangements for extracting light from the devices comprising scattering means
-
- 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
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
-
- 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
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
-
- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/151—Copolymers
-
- 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
-
- 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
- H10K2102/311—Flexible OLED
-
- 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
-
- 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 application relates to a method for manufacturing a substrate for an organic electronic device, a substrate for an organic electronic device, an organic electronic device, and a use thereof.
- An organic electronic device includes an organic light emitting device (OLED), an organic solar cell, an organic photoconductor (OPC), or an organic transistor.
- OLED organic light emitting device
- OPC organic photoconductor
- a typical organic light emitting element typically includes a glass substrate, a transparent electrode layer, an organic layer including a light emitting unit, and a reflective electrode layer sequentially.
- the transparent electrode layer may be formed of a transparent electrode layer, and the reflective electrode layer may be formed of a reflective electrode layer.
- the transparent electrode layer may be formed as a reflective electrode layer, and the reflective electrode layer may be formed as a transparent electrode layer. Electrons and holes are injected in the electrode layer, respectively, and recombined in the light emitting unit to generate light. The light may be emitted to the substrate side in the bottom light emitting device and to the reflective electrode layer side in the top light emitting device.
- Patent Document 1 Japanese Patent No. 381758
- the present application is to provide a method of manufacturing a substrate that can provide an organic electronic device with improved efficiency of the device.
- the present application is also capable of producing a substrate having excellent surface smoothness and the like and appropriately controlled refractive index, light scattering characteristics, etc. according to the desired effect, thereby forming an organic electronic device having excellent reliability and efficiency.
- An object of the present invention is to provide a substrate and a method for manufacturing an organic electronic device. It is another object of the present application to provide a substrate, an organic electronic device, and a use thereof manufactured in the above manner.
- the manufacturing method of the present application can be effectively applied, for example, to the manufacture of a flexible device.
- An exemplary method for manufacturing a substrate for an organic electronic device may include forming a concave-convex pattern on at least one surface of a substrate layer, for example, a flexible substrate layer such as a polymer substrate layer or a precursor of the substrate layer.
- the precursor of the substrate layer may be, for example, a mixture of monomers capable of forming the polymer as a polymer substrate layer or a partial polymer thereof.
- an exemplary method of manufacturing an organic electronic device according to the present application may include forming a concave-convex pattern on at least one surface of a substrate layer, for example, the flexible substrate layer; And forming an organic electronic device on the substrate layer using the substrate layer on which the uneven pattern is formed as a substrate.
- the uneven pattern formed on the base layer may improve the light extraction efficiency of the device, for example, when the organic electronic device is a device that emits light (ex. OLED).
- the organic electronic device manufactured by the above method may have a structure as shown in FIG. 1.
- the uneven pattern formed under the substrate 10 may exhibit a function of scattering light emitted from the organic electronic device 20 through interaction with an external environment such as air. have.
- Such a function is possible, for example, by controlling the refractive index of the substrate layer, which is the substrate 10. That is, when the refractive index of the substrate 10 is adjusted to be different from that of air, which is an external environment, light may be scattered by the uneven structure.
- a method of allowing the substrate layer itself to exhibit appropriate haze may be applied.
- the above-described effects can be achieved by forming additional elements that are the same as or different from the base layer in the formed concave-convex pattern as described below.
- FIG. 2 is a view showing another example of an organic electronic device manufactured by the method of the present application.
- a space is formed inside the substrate layer 10, which is, for example, a surface on which the uneven pattern of the base layer or its precursor layer on which the uneven pattern is formed is formed. It can manufacture by the method of forming another base material layer in the.
- the base material layer formed on the surface on which the uneven pattern of the base material layer is formed may be a base material layer on which the uneven pattern is formed, or a base material layer on which the uneven pattern is not formed.
- the additionally formed base layer may be formed using the same or different material as the base layer on which the uneven pattern is formed. Even in such a structure, the scattering effect as described above may be exhibited by the space formed inside the base layer.
- the method for forming the uneven pattern on one surface of the substrate layer in the manufacturing method is not particularly limited.
- a molding method of pressing the mold onto a suitable plastic substrate layer may be applied.
- the concave-convex pattern may be formed on a mold having concavo-convex formation on the surface by forming the substrate layer or a layer of a precursor of the substrate layer in contact with the concave-convex shape of the mold.
- the layer may be formed by coating or the like when the substrate layer or the precursor of the substrate layer is in the form of a solution, and in the form of a film by pressing the upper portion of the substrate while the film is placed on the mold. Can also be formed.
- the molding method is applied or the substrate layer coated on the mold may be a plastic substrate layer itself applied to the substrate, or a precursor capable of forming the substrate layer.
- a coating liquid capable of forming a polymer is coated on a mold, and cured in that state to form a polymer, thereby forming a base layer having an uneven pattern formed on one surface thereof.
- the concave-convex pattern may be formed by pressing the mold on the surface of the precursor to form a polymer, and polymerizing the precursor.
- the shape of the uneven pattern formed in the above manner is not particularly limited, and an appropriate shape may be selected in consideration of the desired haze or the like.
- the concave-convex pattern may have a spherical shape, a hemispherical shape, an ellipsoid shape, or an amorphous shape, and the average size is in the range of 1 nm to 100 ⁇ m.
- the average size may be, for example, the length or diameter of each concave portion or the groove portion, or the like, when the concave-convex pattern is observed from the top.
- the volume of the space in the substrate 10 formed by the uneven pattern may be about 30% to 91% based on the total volume of the substrate. May be, but is not limited thereto.
- polyamic acid As a precursor of the polymer that can be applied above, polyamic acid may be exemplified.
- the polyamic acid can form a polyimide through an imidization reaction or the like.
- imidization reaction is carried out in a state in which a mold capable of forming an uneven pattern is brought into contact with the polyamic acid layer, an uneven pattern is formed on one surface thereof.
- the base layer which exists can be manufactured.
- the type of substrate layer or precursor thereof that can be applied in the present application is not limited thereto.
- the substrate layer or precursor thereof that can be applied in the manufacturing method is not particularly limited as long as it is a material known in the art to be used in the implementation of a flexible device, and as such a material, polyether ether ketone (PEEK), COP ( cycloolefin polymer (PI), polyimide (PI), polyethylene naphthalate (PEN), polycarbonate (PC), acrylic resin, poly (ethylene terephthatle) (PET), poly (ether sulfide) (PES) or polysulfone (PS)
- PEEK polyether ether ketone
- COP cycloolefin polymer
- PI polyimide
- PEN polyethylene naphthalate
- PC polycarbonate
- acrylic resin poly (ethylene terephthatle)
- PET poly (ether sulfide)
- PS polysulfone
- Illustrative precursors capable of forming are, but are not limited thereto.
- the substrate layer or a precursor thereof may include a condensation unit of an tetracarboxylic dianhydride and a diamine compound or an imidization unit thereof.
- the polyimide can be produced by usually condensing a tetracarboxylic dianhydride and a diamine compound to produce a polyamic acid and then imidating the amic acid.
- the base layer forming the uneven pattern may be a condensation unit (ie, a polyamic acid unit) of the dianhydride and a diamine compound or an imidization unit (ie, a polyimide). Mid unit).
- the kind and ratio of the dianhydride or diamine compound which can be applied above are not particularly limited.
- an appropriate kind may be selected as the dianhydride or diamine compound in consideration of the desired refractive index and the haze from various kinds described later.
- the ratio therebetween may also be selected in the range in which the polyimide can be formed.
- the use of such materials and the application of such methods of such materials have a variety of advantages, for example, the application of the material to the desired haze with or without minimal application of light scattering particles in the substrate. Can be generated. Accordingly, by using the material and applying the method, it is possible to maintain excellent smoothness on the surface on which the organic electronic device is formed, so that the organic electronic device formed thereon can exhibit excellent performance. In addition, in the case of the above-mentioned material, it is possible to freely adjust the refractive index as needed, it can express the haze by itself can be effectively applied to various applications.
- the base layer may be a condensation unit of the first tetracarboxylic dianhydride and the first diamine compound or an imidization unit thereof, or a condensation unit of the first tetracarboxylic dianhydride and the second diamine compound or an imidization unit thereof. And may include a second unit.
- the first unit and the second unit are not necessarily included in the base layer at the same time, if necessary, one unit having appropriate physical properties may be included in the base layer.
- the base layer may be formed by selecting only a unit showing a high refractive index from the units described below.
- the first and second units may be included in one polymer or may be included in a separate polymer and exist in the base layer. That is, the base layer may include one polymer including the first unit and the second unit, or may include a polymer including the first unit and a polymer including the second unit. In addition, each of the first and second units may be a chain included in a predetermined polymer, or may itself be a polymer.
- the first and second units may have different physical properties for controlling at least one of haze and refractive index.
- the first and second units may have different refractive indices.
- the term refractive index in this application is a refractive index measured for light of 550 nm wavelength unless otherwise specified.
- the absolute value of the difference between the refractive indices of the first and second units may be 0.01 or more.
- the absolute value of the refractive index difference may be about 0.02 or more, about 0.03 or more, about 0.04 or more, about 0.05 or more, or about 0.06 or more.
- the absolute value of the difference in refractive index may be about 0.2 or less, about 0.15 or less, about 0.1 or less, or about 0.08 or less.
- the method of adjusting the refractive indices of the first and second units as described above is not particularly limited, and for example, a component constituting each unit may be selected and adjusted.
- the dianhydride and the diamine compound forming the unit may be selected from among aromatic, aliphatic or alicyclic dianhydrides or diamine compounds, respectively, of the aromatic series known to impart high refractive index.
- relatively high refractive index units can be formed.
- the first and second units may have different polarities.
- one or both of the first and second units may comprise one or more polar functional groups.
- the absolute value of the difference between the number of moles of the polar functional group included in the first unit and the number of moles of the polar functional group included in the second unit may be 2 or more.
- the absolute value of the difference of the number of moles may be 10 or less, 8 or less, 6 or less or 4 or less in another example.
- the polar functional group may be substituted with the above dianhydride or diamine compound.
- the type of polar functional group that can be applied is not particularly limited, but is a haloalkyl group, a cyano group, a nitro group, a hydroxy group, an alkoxy group, a cyanate group or substituted with a halogen atom such as fluorine or chlorine, or a halogen such as fluorine or chlorine.
- a thiocyanate group etc. are mentioned, A halogen atom or a haloalkyl group can be used from a viewpoint of application convenience.
- the haloalkyl group or alkoxy group may be a C1-20, C1-16, C1-12, C1-8 or C1-4 haloalkyl group or alkoxy group.
- the dianhydrides or diamine compounds substituted with such polar functional groups are variously known or can be synthesized in a conventional manner.
- the haze of the polyimide substrate layer may be uniformly adjusted by using a difference in refractive index or polarity of the first and second units.
- Mixtures of heterogeneous polyimides having such refractive indices or polarities can form opaque emulsions, and the opacity of such emulsions is believed to be transferred to the film. Therefore, the haze of the polyimide film can be adjusted by adjusting the refractive index or the polarity difference of the components forming the emulsion.
- the refractive index of the entire film can be easily adjusted by adjusting the ratio of the unit having the high refractive index in the above process.
- the ratio of the first and second units in the substrate layer is not particularly limited and may be adjusted in consideration of a desired refractive index, haze, and the like.
- the base layer is about 3 parts by weight to 100 parts by weight, 3 parts by weight to 80 parts by weight, 3 parts by weight to 60 parts by weight, 3 parts by weight to 40 parts by weight, and 3 parts by weight based on 100 parts by weight of the second unit.
- Part to 20 parts by weight or 3 to 15 parts by weight of the first unit may be included, but is not limited thereto.
- dianhydride or diamine compound which forms the polyimide containing said 1st and 2nd units as mentioned above, and the method of forming the said unit using the same are not restrict
- various dianhydrides or diamine compounds capable of synthesizing polyimides are known, and an appropriate kind may be selected and used in consideration of the desired refractive index or polarity among these known components.
- aliphatic, cycloaliphatic or aromatic tetracarboxylic dianhydride that can be used as the dianhydride
- butanetetracarboxylic dianhydride pentanetetracarboxylic dianhydride, hexanetetracarboxylic dianhydride, cyclopentane Tetracarboxylic dianhydride, bicyclopentane tetracarboxylic dianhydride, cyclopropanetetracarboxylic dianhydride, methylcyclohexanetetracarboxylic dianhydride, 3,3 ', 4,4'-benzophenonetetracarb Acid dianhydride, 3,4,9,10-perylenetetracarboxylic dianhydride, 4,4'-sulfonyldiphthalic dihydride, 3,3 ', 4,4'-biphenyltetracarboxylic Acid dianhydride, 1,2,5,6-na
- the substrate layer as described above may be a light transmissive film.
- the term translucent film may refer to a film having a transmittance of 50% or more, 60% or more, 70% or more, or 80% or more, for example, light in any one of the visible regions or light in the entire visible region. .
- Haze of the base layer may be adjusted as needed, for example, it may be adjusted in the range of about 3% to 90%.
- the term haze in the present application may be a range measured according to ASTM D1003 using a device such as Haze Meter HM-150.
- the other lower limit of the haze may be, for example, about 5% or 10%.
- another upper limit of haze may be, for example, about 85%, 80%, 75%, 70%, 65%, 60%, 55%, 50%, 45%, 40%, 35%, or 30%.
- the haze as described above can be achieved by adjusting the shape, size, or ratio of the uneven pattern when the uneven pattern is formed on the base layer. It can also achieve by having a haze also in the base material layer itself.
- the base layer may contain no scattering particles or may contain a minimum amount of the desired haze.
- the term scattering particles may refer to particles having a refractive index different from that of the surrounding matrix and having an average particle diameter such that the incident light can be scattered according to the wavelength of the incident light.
- the base layer of the present application includes the above-mentioned scattering particles in about 10% by weight, 8% by weight, 6% by weight, 4% by weight, 2% by weight or 1% by weight or less of the total weight of the substrate layer It may not contain substantially.
- the substrate layer may have a coefficient of thermal expansion (CTE) in the range of about 5 ppm / ° C to 70 ppm / ° C. This range may be advantageous for preventing defects such as interlayer peeling that may occur in a structure in which an organic material layer and an inorganic material layer are mixed.
- CTE coefficient of thermal expansion
- the substrate layer may have a glass transition temperature of about 200 ° C. or more.
- the glass transition temperature may be the glass transition temperature of the substrate layer itself, or may be the glass transition temperature of the substrate layer on which the buffer layer described later is formed. This range may be suitable for high temperature processes for deposition or patterning in the manufacture of organic electronic devices.
- the glass transition temperature may be at least about 210 ° C, at least about 220 ° C, at least about 230 ° C, at least about 240 ° C, or at least about 250 ° C.
- the upper limit of the glass transition temperature is not particularly limited, and may be, for example, about 400 ° C, 350 ° C, or about 300 ° C.
- the substrate layer may have a surface roughness (RMS) within a range of about 0.1 nm to 5 nm.
- the surface roughness is the surface roughness of the surface on which the uneven pattern is not formed.
- Such surface roughness may be with respect to the surface of the substrate layer itself, or may be with respect to the surface of the buffer layer of the substrate layer on which the buffer layer described later is formed.
- Such a range of surface roughness may be advantageous for improving the performance of the layer formed thereon.
- a layer having more excellent moisture barrier property or the like can be formed.
- the surface roughness may, in other examples, be about 4 nm or less, about 3 nm or less, about 2.5 nm or less, or about 2 nm or less.
- the substrate layer may have a refractive index of at least about 1.4, at least about 1.5, at least about 1.6, at least about 1.7, at least about 1.75 or at least about 1.8.
- the range of the refractive index of the substrate layer may be advantageous to increase the light efficiency of the device.
- the upper limit of the refractive index of the substrate layer is not particularly limited, and may be, for example, about 2.0.
- the high refractive index of the base layer may be adjusted by selecting a unit constituting the film, or, if necessary, by combining an appropriate amount of a component having a high refractive index.
- the thickness of the base layer is not particularly limited and may be selected in an appropriate range in consideration of desired performance, for example, flexibility, light extraction efficiency or barrier properties.
- the thickness of the substrate layer may be in the range of about 10 ⁇ m to about 50 ⁇ m or in the range of about 20 ⁇ m to about 30 ⁇ m.
- the substrate layer may be immediately applied to a method of manufacturing an organic electronic device without additional treatment, and if necessary, further treatment may be performed. It can then be applied to an organic electronic device as a substrate.
- corrugated pattern was formed in one surface is mentioned.
- the second base material layer may be the same material as or different material from the base material layer on which the uneven pattern is formed.
- FIG. 4 is a diagram schematically showing the formation of the second base material layer 42 on the base material layer 41 having the uneven pattern formed as described above.
- corrugated pattern is not formed in the 2nd base material layer 42, if necessary, the uneven
- Another additional step may be a step of filling another material in the recess formed in the uneven pattern.
- it may be required to make the recesses as shown in FIG. 1 formed by the uneven pattern or the refractive index of the base layer different from the space inside the base layer 10 as shown in FIG. 2. Accordingly, a step of filling a separate material into the recess may be performed. However, the filling step may be omitted if air is present in the recess, or if the recess is present in a vacuum state so that the desired haze or the like is expressed without filling any other material.
- the material that can be filled in the recess may be a high refractive index material having a high refractive index or a low refractive material having a low refractive index.
- examples of the high refractive material include SiON, TiO 2 , SiO 2 , Al 2 O 3 , Ta 2 O 3 , Ti 3 O 3 , TiO 2 , TiO, ZrO 2 , Nb 2 O 3 , CeO 2 or ZnS.
- a polymer material such as an epoxy resin may be exemplified, but is not limited thereto.
- any material may be used in the process as long as it exhibits a high refractive index or a low refractive index and has a refractive index different from that of the base layer.
- the method of filling the material is not particularly limited, and for example, a wet coating, a chemical vapor deposition process, a sputtering process, or an atomic layer deposition (ALD) process may be applied.
- a wet coating a chemical vapor deposition process, a sputtering process, or an atomic layer deposition (ALD) process may be applied.
- ALD atomic layer deposition
- the step of forming a high refractive layer formed on the base layer may also be exemplified.
- the high refractive layer may be formed on the uneven pattern of the base layer on which the uneven pattern is formed, or may be formed on a surface on which the uneven pattern is not formed.
- the term high refractive index layer may mean a layer having a refractive index of 1.7 or more, 1.8 or more, 1.85 or more or 1.9 or more for a wavelength of 550 nm.
- An upper limit of the refractive index of the high refractive layer may be, for example, about 2.0.
- the high refractive layer may include, for example, high refractive particles together with a binder.
- a high refractive layer can be formed using a composition obtained by mixing high refractive particles with a binder.
- the binder may be a known material without particular limitation.
- As the binder for example, various organic binders, inorganic binders or organic-inorganic binders known in the art can be used.
- the organic binder, the inorganic binder, or the organic / inorganic binder having excellent heat resistance and chemical resistance may be selected and used in consideration of excellent resistance to a high temperature process, a photo process or an etching process performed during the life of the device or the fabrication process.
- the binder may, for example, have a refractive index of at least about 1.4, at least about 1.45, at least about 1.5, at least about 1.6, at least about 1.65, or at least about 1.7.
- the upper limit of the refractive index of the binder may be selected in a range capable of satisfying the refractive index of the high refractive layer in consideration of the refractive index of the particles to be blended together.
- binder examples include polyimide, polyamic acid, caldo resin having a fluorene ring, urethane, epoxide, polyester or acrylate-based thermal or photocurable monomeric, oligomeric or Polymeric organic materials, inorganic materials such as silicon oxide, silicon nitride, silicon oxynitride, epoxy resins or polysiloxanes, or organic-inorganic composite materials may be exemplified.
- the high refractive layer may further include high refractive particles.
- high refractive particles may mean, for example, particles having a refractive index of 1.8 or more, 2.0 or more, 2.2 or more, 2.5 or more, 2.6 or more, or 2.7 or more.
- the upper limit of the refractive index of the high refractive particles may be selected in a range capable of satisfying the refractive index of the high refractive layer, for example, in consideration of the refractive index of the binder and the like blended together.
- the high refractive particles may be, for example, about 1 nm to 100 nm, 10 nm to 90 nm, 10 nm to 80 nm, 10 nm to 70 nm, 10 nm to 60 nm, 10 nm to 50 nm or about 10 nm to 45 nm. It may have an average particle diameter of.
- the high refractive particles for example, alumina, aluminosilicate, titanium oxide or zirconium oxide and the like can be exemplified.
- rutile titanium oxide can be used, for example, as particles having a refractive index of 2.5 or more.
- Titanium oxide of the rutile type has a high refractive index compared to other particles, and therefore can be adjusted to the desired refractive index in a relatively small proportion.
- the ratio of the high refractive particles in the high refractive layer is not particularly limited, and may be adjusted within a range in which the refractive index of the high refractive layer described above can be secured.
- An inorganic layer may exist on the base layer, and in some cases, the inorganic layer may serve as the high refractive layer described above.
- the term inorganic layer may be a layer containing 50% or more or 60% of inorganic material by weight.
- the inorganic layer may include only an inorganic material or may include other components such as an organic material if the inorganic material is included in the above range.
- the inorganic layer may be, for example, a barrier layer.
- the term barrier layer may be a layer capable of blocking, inhibiting or mitigating the penetration of external factors that may adversely affect the performance of devices such as organic layers such as moisture or moisture.
- the barrier layer may be a layer having a water vapor transmission rate (WVTR) of 10 ⁇ 4 g / m 2 / day or less.
- WVTR water vapor transmission rate
- WVTR water vapor transmission rate
- the barrier layer can be formed using a material known to be able to mitigate, prevent or inhibit the penetration of external factors such as moisture and oxygen.
- materials include metals such as In, Sn, Pb, Au, Cu, Ag, Al, Ti, and Ni; TiO, TiO 2 , Ti 3 O 3, Al 2 O 3 , MgO, SiO, SiO 2 , GeO, NiO, CaO, BaO, Fe 2 O 3 , Y2O 3 , ZrO 2 , Nb 2 O 3 and CeO 2 and Metal oxides such as; Metal nitrides such as SiN; Metal oxynitrides such as SiON; Or metal fluorides such as MgF 2 , LiF, AlF 3, and CaF 2 , or other materials known as absorbent materials having an absorption rate of 1% or more, or moisture-proof materials having an absorption coefficient of 0.1% or less.
- the inorganic layer may, for example, have a low degree of crystallinity or may be substantially amorphous.
- the method of forming an inorganic layer formed as described below to be an oxide layer such as a metal oxide, a method of repeatedly forming a thin layer a plurality of times, and different materials of adjacent sub-layers in the plurality of times of repeated formation are different.
- the inorganic layer satisfying the above-mentioned crystallinity can be formed by adopting any one of a method of controlling and a material of the respective sublayers different from each other, and each sublayer being an oxide layer such as a metal oxide. Can be.
- the inorganic layer may be appropriate as small as possible the difference in refractive index with the base layer. Such a case can contribute to the formation of a substrate having particularly excellent light extraction efficiency.
- the absolute value of the difference in refractive index between the inorganic layer and the base layer may be about 1 or less, about 0.7 or less, about 0.5 or less, or about 0.3 or less. Therefore, when the base layer has a high refractive index as described above, the inorganic material layer should have a refractive index equivalent to that of the same.
- the refractive index of the inorganic layer may be about 1.5 or more, about 1.6 or more, about 1.7 or more, or about 1.75 or more.
- the range of the refractive index of the substrate layer may be advantageous to increase the light efficiency of the device.
- the upper limit of the refractive index of the inorganic layer is not particularly limited, and may be, for example, about 2.0.
- the thickness of the inorganic layer may be determined according to the effect according to the intended use, and the range is not particularly limited, but in one example, about 10 nm to 100 nm, 10 nm to 90 nm, 10 nm to 80 nm, 10 nm to It may be in the range of 70 nm, 10 nm to 60 nm, 10 nm to 50 nm or 20 nm to 50 nm.
- the inorganic layer may be a single layer or a multilayer structure, but may be required to have a multilayer structure to satisfy the crystallinity as described above.
- the multilayer structure may include a structure in which the same type or different types of inorganic layers are stacked. Forming the inorganic layer in a multi-layered structure has the above-described interfacial adhesion and may contribute to forming the inorganic layer having the above-mentioned crystallinity. In addition, forming the inorganic layer in a multilayer structure may contribute to the formation of the inorganic layer having the aforementioned refractive index.
- the inorganic layer may include a laminated structure of at least a first sublayer and a second sublayer.
- the thicknesses of the first and second sublayers may be adjusted in consideration of interfacial adhesion, crystallinity, barrier property, or refractive index required for the inorganic layer.
- the thicknesses of the first and second sublayers can all be adjusted in the range of 7 nm or less, 6 nm or less, 5 nm or less, 4 nm or less, 3 nm or less, or 2 nm or less.
- the lower limit of the thickness of the sublayer is not particularly limited.
- the lower limit of the thickness of the sub layer may be set in an appropriate range in consideration of the desired thickness and the like, and may be adjusted in a range of about 0.1 nm or more, for example.
- the thicknesses of all the sublayers included in the inorganic layer of the multilayer structure may be adjusted within the above range.
- the inorganic layer may not include sublayers whose thickness exceeds 10 nm, 9 nm, 8 nm, 7 nm, 6 nm or 5 nm.
- the number of sublayers included in the inorganic layer is not particularly limited. The above may be determined according to the thickness of the sub layer and the thickness of the desired inorganic layer.
- the inorganic layer may include 2 to 50 sublayers.
- the sub layer may include 4 or more, 6 or more, 8 or more, or 10 or more.
- the sub-layer may include 45 or less, 40 or less, 35 or less, 30 or less, 25 or less, 20 or less, or 15 or less.
- each sublayer may be the first or second sublayer, and may also include a third sublayer or more.
- the sublayer may be formed of various materials, but may be formed of oxides, nitrides, or oxynitrides of various metals or nonmetals in terms of contributing to interfacial adhesion, crystallinity, barrier properties, refractive index, and the like.
- the first and second sublayers may be oxide layers, nitride layers or oxynitride layers. If necessary, all the sub layers included in the inorganic layer may be formed of the oxide.
- the kind of oxide that can be used in this case is not particularly limited, and may be appropriately selected from oxides capable of forming the above-mentioned barrier layer.
- Sublayers in contact with each other among the sublayers may be formed of different materials to contribute to interfacial adhesion, crystallinity, barrier property, refractive index, and the like.
- the first and second sublayers may be formed of different materials, for example different oxides, nitrides or oxynitrides.
- the inorganic layer includes a third sublayer, a fourth sublayer or more sublayers as described above, it may be advantageous that the sublayers which are also in contact with each other are formed of different materials, for example, different oxides.
- the first sublayer may have a first refractive index
- the second sublayer may have a second refractive index different from the first refractive index.
- the absolute value of the difference between the first refractive index and the second refractive index may be, for example, 0.1 or more.
- the absolute value may be 0.2 or more, 0.3 or more, 0.4 or more, 0.5 or more or 0.6 or more.
- the absolute value may be in a range of 2 or less, 1.8 or less, 1.6 or less, 1.4 or less, or 1.2 or less in another example.
- each of the first and second refractive indices is not particularly limited as long as the range of the refractive indices is secured.
- the refractive index of the first sublayer is in the range of 1.4 to 1.9
- the refractive index of the second sublayer is 2.0 to May be in the range of 2.6.
- the first and second sub-layers as described above may be metal oxide layers, respectively.
- suitable materials for the first sublayer include Al 2 O 3 and the like, and suitable materials for the second sublayer include TiO 2 , but the final laminated structure has the aforementioned refractive indices, respectively. If it can have a barrier property, a variety of other materials can be applied in addition.
- the inorganic material layer or each sublayer can be formed through a known method, but it is advantageous to form the ALD (Atomic Layer Deposition) method from the viewpoint of securing interfacial adhesion.
- the ALD method includes, for example, alternately depositing a precursor such as an organic metal and a precursor such as water on a surface to be deposited, and in this process, monolayers of the precursors are alternately formed to react with each other to form an inorganic layer. This can be formed.
- the layer formed by the ALD method has a predetermined functional group, for example, the above-described hydroxyl group, in the substrate layer, the functional group may react with the functional group in the formation process, thereby securing the desired interfacial adhesion.
- the term ALD layer may mean an inorganic layer formed by the ALD method.
- a method of forming an inorganic layer or a sub layer may include sputtering, pulsed laser deposition, electron beam evaporation, thermal evaporation, or laser molecular L-MBE.
- Chemical Vapor Deposition (PVD) or Metal Organic Chemical Vapor Deposition (MOCVD), Hybrid Vapor Phase Epitaxy (HVPE), Initiated Chemical Vapor Deposition (iCVD) or Plasma Enhanced Chemical Vapor Deposition (PECVD) Vapor Deposition may be exemplified. If necessary, the performance of the inorganic layer may be maximized by selecting an appropriate method according to the material used among the above methods.
- the substrate of the present application may include additional layers.
- the substrate of the present application may further include a buffer layer between the inorganic layer and the base layer in order to achieve the interface adhesion between the inorganic layer and the base layer.
- the manufacturing method may also include forming a buffer layer on the substrate layer.
- the buffer layer is not an essential configuration, for example, the buffer layer may not be required if the interface adhesion is achieved.
- the substrate of the present application may also include an electrode layer present on the inorganic layer or the substrate layer as an additional layer. Therefore, the manufacturing method may further include forming an electrode layer on the base layer or the inorganic layer.
- the electrode layer a hole injectable or electron injecting electrode layer commonly used in organic electronic devices may be used.
- the electrode layer may be a transparent electrode layer or a reflective electrode layer.
- the hole injection electrode layer may be formed using a material having a relatively high work function, for example, and may be formed using a transparent or reflective material if necessary.
- the hole injection electrode layer may comprise a metal, alloy, electrically conductive compound, or a mixture of two or more thereof, having a work function of about 4.0 eV or more.
- Such materials include metals such as gold, CuI, Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), Zinc Tin Oxide (ZTO), zinc oxide doped with aluminum or indium, magnesium indium oxide, nickel tungsten oxide, Oxide materials such as ZnO, SnO 2 or In 2 O 3 , metal nitrides such as gallium nitride, metal serenides such as zinc serenides, metal sulfides such as zinc sulfides, and the like.
- the transparent hole injection electrode layer can also be formed using a laminate of a metal thin film such as Au, Ag or Cu, and a high refractive transparent material such as ZnS, TiO 2 or ITO.
- the hole injection electrode layer may be formed by any means such as vapor deposition, sputtering, chemical vapor deposition, or electrochemical means.
- the electrode layer formed as needed may be patterned through a process using known photolithography, shadow mask, or the like.
- the electron injection electrode layer may be formed using, for example, a material having a relatively small work function.
- a material having a relatively small work function For example, an appropriate transparent or reflective material may be used among materials used for forming the hole injection electrode layer. It may be formed by, but is not limited thereto.
- the electron injection electrode layer can also be formed using, for example, a vapor deposition method or a sputtering method, and can be appropriately patterned if necessary.
- the thickness of the electrode layer may be formed to have a thickness of, for example, about 90 nm to 200 nm, 90 nm to 180 nm, or about 90 nm to 150 nm.
- the present application also relates to a substrate for an organic electronic device manufactured in the above manner.
- the matters relating to the substrate may be the same as those described in the method for manufacturing the substrate.
- the substrate is manufactured by the above method, and may be a polymer base layer having an uneven pattern formed on at least one surface thereof.
- the substrate may have a second polymer base layer formed on a surface on which the uneven pattern of the polymer base layer is formed, and a space may be formed therein by the uneven pattern.
- Such a structure may be, for example, a structure as shown in FIG. 2.
- the matters described above may be applied to the material of the polymer base layer, the concave portion of the uneven pattern, the material that may be filled in the internal space, or the like, which may additionally exist on the base layer.
- the present application also relates to a method for manufacturing an organic electronic device.
- the method of manufacturing the organic electronic device may include manufacturing the organic electronic device by using the prepared substrate layer as a substrate, following the manufacturing method of the substrate.
- the present application also relates to an organic electronic device manufactured as described above.
- the method of manufacturing the organic electronic device using the substrate layer described above is not particularly limited, and a known method may be applied.
- the organic electronic device may include a substrate layer which is the substrate for the organic electronic device described above and an element region present on the substrate.
- the device region may include a first electrode layer, an organic material layer, a second electrode layer, and the like.
- the organic electronic device may be manufactured by forming the electrode layer, the organic material layer, or the like in a known manner on a substrate layer manufactured in the above-mentioned manner. Can be.
- the electrode layer may serve as the first electrode layer.
- the exemplary organic electronic device may include the base layer, the first electrode layer, the organic material layer, the second electrode layer, the second inorganic material layer, and a cover film sequentially present in an upward direction.
- Each of the layers may be directly stacked without another layer between adjacent layers, or may be stacked via another layer.
- the term upward direction means a direction from the first electrode layer to the second electrode layer unless otherwise specified
- the term downward direction refers to a direction from the second electrode layer toward the first electrode layer unless otherwise specified. it means.
- a region including all elements (except the first electrode layer) existing under the first electrode layer in the structure will be referred to as a substrate region, and the first electrode layer and the second electrode layer and between The region containing all the elements present is called an element region, and the region containing all elements (except the second electrode layer) present on top of the second electrode layer is called an upper region.
- the substrate region may include other layers in addition to the above-mentioned base layer.
- a layer that may additionally be present in the substrate region a carrier substrate, a barrier film or an adhesive layer may be exemplified.
- a barrier film can be exemplified.
- a substrate layer having a relatively low barrier property is applied as compared to a rigid structure in which a substrate having excellent barrier property is used, such as a glass substrate.
- an additional barrier film is used, for example, to supplement the barrier property. May be present at the bottom of
- the barrier film may be any one capable of ensuring appropriate barrier properties and light transmittance when necessary.
- the barrier film may be attached to the base layer by, for example, an adhesive layer.
- the barrier film may be attached to, for example, a surface opposite to a surface on which the device region of the substrate layer is formed.
- the term adhesive layer is a term encompassing not only a material commonly referred to as an adhesive but also a layer formed by using a material referred to as an adhesive or a material referred to as an adhesive.
- the material for forming the adhesive layer is not particularly limited, and for example, a known point / adhesive material such as an acrylic polymer, a silicone polymer, a rubber polymer, an ethylene polymer such as EVA (Ethylene vinyl acetate) polymer or a polyisobutylene (PIB) may be used. Can be used.
- moisture barrier material may be blended in the adhesive layer.
- the adhesive layer in which the moisture barrier material is blended herein may be referred to as a barrier adhesive layer.
- moisture barrier material may be used as a generic term for a component capable of absorbing or removing moisture or moisture introduced from the outside through a physical or chemical reaction.
- the specific kind of the moisture barrier material that can be blended into the adhesive layer is not particularly limited, and examples thereof include one kind or a mixture of two or more kinds of metal oxides, organometallic oxides, metal salts, or phosphorus pentoxide (P 2 O 5 ). .
- the metal oxide may include lithium oxide (Li 2 O), sodium oxide (Na 2 O), barium oxide (BaO), calcium oxide (CaO), magnesium oxide (MgO), and the like.
- Examples include lithium sulfate (Li 2 SO 4 ), sodium sulfate (Na 2 SO 4 ), calcium sulfate (CaSO 4 ), magnesium sulfate (MgSO 4 ), cobalt sulfate (CoSO 4 ), gallium sulfate (Ga 2 (SO 4 ) 3 ), sulfates such as titanium sulfate (Ti (SO 4 ) 2 ) or nickel sulfate (NiSO 4 ), etc., calcium chloride (CaCl 2 ), magnesium chloride (MgCl 2 ), strontium chloride (SrCl 2 ), yttrium chloride (YCl 3 ) , Copper chloride (CuCl 2 ), cesium fluoride (CsF), tantalum flu
- Appropriate scattering particles may be blended in the adhesive layer, whereby the adhesive layer itself may exhibit a suitable haze. Light extraction efficiency can be improved when the adhesive layer exhibits haze.
- the kind of scattering particles that can be blended into the adhesive layer is not particularly limited, and an appropriate kind may be selected and used from the scattering particles included in the scattering layer in consideration of the refractive index of the resin forming the adhesive layer.
- a carrier substrate that may be temporarily or permanently attached to the bottom of the substrate layer.
- a rigid substrate such as a glass substrate may be applied to the carrier substrate.
- the substrate region may be formed in various structures.
- the substrate region may be a form in which the base layer 10 of the form shown in FIG. 1 or 2 is present alone, or in the form of the high refractive or inorganic layer mentioned above in the downward direction and shown in FIG. 1 or 2.
- the organic material layer exists between the first and second electrode layers.
- the organic material layer may include at least one or two light emitting units. In such a structure, light generated in the light emitting unit may be emitted to the transparent electrode layer through a process of being reflected by the reflective electrode layer.
- an intermediate electrode layer or a charge generating layer may be further present between the plurality of light emitting units for proper light emission. Therefore, the light emitting units may have a structure divided by an intermediate electrode layer or a charge generating layer (CGL) having charge generation characteristics.
- CGL charge generating layer
- the material constituting the light emitting unit is not particularly limited. Fluorescent or phosphorescent organic materials having various emission center wavelengths are known in the art, and an appropriate kind can be selected from these known materials to form the light emitting unit. Examples of the material of the light emitting unit include tris (4-methyl-8-quinolinolate) aluminum (III) (tris (4-methyl-8-quinolinolate) aluminum (III)) (Alg3), 4-MAlq3, Gaq3 and the like.
- the light emitting unit includes the material as a host and further includes perylene, distyrylbiphenyl, DPT, quinacridone, rubrene, BTX, ABTX, DCJTB and the like. It may have a host-dopant system including a as a dopant.
- the light emitting unit can also be formed by appropriately adopting a kind exhibiting light emission characteristics among the electron-accepting organic compound or electron donating organic compound described later.
- the organic material layer may be formed in various structures further including various other functional layers known in the art, as long as the light emitting unit includes a light emitting unit.
- the layer that may be included in the organic material layer include an electron injection layer, a hole blocking layer, an electron transport layer, a hole transport layer, a hole injection layer, and the like.
- the electron injection layer or the electron transport layer can be formed using, for example, an electron accepting organic compound.
- an electron accepting organic compound any compound known without particular limitation may be used.
- organic compounds include polycyclic compounds such as p-terphenyl or quaterphenyl or derivatives thereof, naphthalene, tetratracene, pyrene, coronene, and coronene.
- Polycyclic hydrocarbon compounds or derivatives thereof such as chrysene, anthracene, diphenylanthracene, naphthacene or phenanthrene, phenanthroline, vasophenanthrol Heterocyclic compounds or derivatives thereof, such as lean (bathophenanthroline), phenanthridine, acridine (acridine), quinoline (quinoline), quinoxaline or phenazine (phenazine) and the like.
- fluoroceine perylene, phthaloperylene, naphthaloperylene, naphthaloperylene, perynone, phthaloperinone, naphtharoferinone, diphenylbutadiene ( diphenylbutadiene, tetraphenylbutadiene, oxadiazole, ardazine, bisbenzoxazoline, bisstyryl, pyrazine, cyclopentadiene , Oxine, aminoquinoline, imine, diphenylethylene, vinylanthracene, diaminocarbazole, pyrane, thiopyrane, polymethine, mero Cyanine (merocyanine), quinacridone or rubrene, or derivatives thereof, JP-A-1988-295695, JP-A-1996-22557, JP-A-1996-81472, Japanese Patent Laid-Open Publication No.
- Fluorescent brighteners such as a benzooxazole compound, a benzothiazole compound or a benzoimidazole compound; 1,4-bis (2-methylstyryl) benzene, 1,4-bis (3-methylstyryl) benzene, 1,4-bis (4-methylstyryl) benzene, distyrylbenzene, 1,4- Bis (2-ethylstyryl) benzyl, 1,4-bis (3-ethylstyryl) benzene, 1,4-bis (2-methylstyryl) -2-methylbenzene or 1,4-bis (2- Distyrylbenzene compounds such as methylstyryl) -2-ethylbenzene and the like; 2,5-bis (4-methylstyryl) pyrazine, 2,5-bis (4-ethylstyryl) pyrazine, 2,5-bis [2- (1-naphthyl) vinyl
- the electron injection layer may be formed using, for example, a material such as LiF or CsF.
- the hole blocking layer is a layer capable of preventing the injected holes from entering the electron injecting electrode layer through the light emitting unit and improving the life and efficiency of the device. If necessary, a light blocking unit and an electron It can be formed in an appropriate part between the granular electrode layers.
- the hole injection layer or hole transport layer may comprise, for example, an electron donating organic compound.
- the electron donating organic compound include N, N ', N'-tetraphenyl-4,4'-diaminophenyl, N, N'-diphenyl-N, N'-di (3-methylphenyl) -4, 4'-diaminobiphenyl, 2,2-bis (4-di-p-tolylaminophenyl) propane, N, N, N ', N'-tetra-p-tolyl-4,4'-diamino ratio Phenyl, bis (4-di-p-tolylaminophenyl) phenylmethane, N, N'-diphenyl-N, N'-di (4-methoxyphenyl) -4,4'-diaminobiphenyl, N , N, N ', N'-tetraphenyl-4,4'-diaminodiphenylether
- the hole injection layer or the hole transport layer may be formed by dispersing an organic compound in a polymer or using a polymer derived from the organic compound.
- hole transportable nonconjugated polymers such as? Conjugated polymers, poly (N-vinylcarbazole), or? Conjugated polymers of polysilane, such as polyparaphenylene vinylene and derivatives thereof, may also be used.
- the hole injection layer is formed by using electrically conductive polymers such as metal phthalocyanine such as copper phthalocyanine, non-metal phthalocyanine, carbon film and polyaniline, or by reacting the aryl amine compound with Lewis acid as an oxidizing agent. You may.
- electrically conductive polymers such as metal phthalocyanine such as copper phthalocyanine, non-metal phthalocyanine, carbon film and polyaniline, or by reacting the aryl amine compound with Lewis acid as an oxidizing agent. You may.
- the specific structure of the organic material layer is not particularly limited.
- various materials for forming a hole or electron injection electrode layer and an organic material layer for example, a light emitting unit, an electron injection or transport layer, a hole injection or transport layer, and a method of forming the same are known. All of these methods can be applied.
- the upper region of the organic electronic device may include an inorganic layer and a cover film sequentially formed in an upward direction.
- the inorganic layer included in the upper region may be referred to as a second inorganic layer
- the inorganic layer included in the substrate may be referred to as a first inorganic layer.
- the second inorganic material layer is present in order to block, suppress or mitigate the penetration of the foreign material to ensure durability, and the specific material and formation method may be similar to those mentioned in the item of the first inorganic material layer.
- the second inorganic material layer does not need to be formed to have a high refractive index like the first inorganic material layer.
- the cover film present on the upper portion of the second inorganic material layer may be a structure that protects the organic electronic device.
- a known barrier film, a metal sheet, a conductive film, or the like may be a laminate structure of two or more of the above.
- the cover film may be attached to the top of the second inorganic material layer through an adhesive layer, for example, the barrier adhesive layer described above.
- the present application also relates to the use of such organic electronic devices, for example organic light emitting devices.
- the organic light emitting device may be, for example, a backlight of a liquid crystal display (LCD), a light source, a light source such as various sensors, a printer, a copier, a vehicle instrument light source, a signal lamp, an indicator light, a display device, a planar light emitting body, and the like. It can be effectively applied to a light source, a display, a decoration or various lights.
- the present application relates to a lighting device including the organic light emitting device.
- the organic light emitting device When the organic light emitting device is applied to the lighting device or other uses, other components constituting the device or the like or a method of constituting the device are not particularly limited, and are known in the art as long as the organic light emitting device is used. Any material or method can be employed.
- the present application can provide a method of manufacturing a substrate that can provide an organic electronic device having improved device efficiency.
- the present application is also capable of producing a substrate having excellent surface smoothness and the like and appropriately controlled refractive index, light scattering characteristics, etc. according to the desired effect, thereby forming an organic electronic device having excellent reliability and efficiency.
- a method of manufacturing a substrate and an organic electronic device can be provided.
- the present application may also provide a substrate, an organic electronic device, and a use thereof manufactured in the above manner.
- the manufacturing method of the present application can be effectively applied, for example, to the manufacture of a flexible device.
- 1 and 2 are schematic diagrams of exemplary organic electronic devices.
- FIG 3 is a diagram schematically illustrating a process of forming an uneven pattern on the base layer.
- FIG. 4 is a diagram illustrating a process of manufacturing a substrate layer.
- the substrate A was about 5%, and the light transmittance was about 85%.
- First polyamic acid solution (refractive index: about 1.56) prepared by condensation reaction of BPDA (3,3 ', 4,4'-Biphenyltetracarboxylic dianhydride) and TFMB (2,2'-Bis (trifluoromethyl) benzidine) and FDA (2
- a second polyamic acid solution (refractive index: about 1.541) prepared by condensation of, 2'-Bis- (3,4-Dicarboxyphenyl) hexafluoropropane dianhydride) and TFMB (2,2'-Bis (trifluoromethyl) benzidine)
- a polyimide substrate (B) was manufactured in the same manner as in Preparation Example 1, except that the film-forming composition prepared by mixing in a ratio of 5:95 (first polyamic acid: second polyamic acid) was used as a standard.
- the haze of the synthesized substrate (B) was evaluated according to ASTM D1003 using Haze Meter HM-150, which was about 5.12%
- First polyamic acid solution (refractive index: about 1.56) prepared by condensation reaction of BPDA (3,3 ', 4,4'-Biphenyltetracarboxylic dianhydride) and TFMB (2,2'-Bis (trifluoromethyl) benzidine) and FDA (2
- a second polyamic acid solution (refractive index: about 1.541) prepared by condensation of, 2'-Bis- (3,4-Dicarboxyphenyl) hexafluoropropane dianhydride) and TFMB (2,2'-Bis (trifluoromethyl) benzidine)
- a polyimide substrate (C) was manufactured in the same manner as in Preparation Example 1, except that the film-forming composition prepared by mixing at a ratio of 10:90 (first polyamic acid: second polyamic acid) was used.
- the synthesized substrate (C) was about 16.44%, and the light transmitt
- First polyamic acid solution (refractive index: about 1.625) prepared by condensation reaction of BPDA (3,3 ', 4,4'-Biphenyltetracarboxylic dianhydride) and PDA (p-phenylene diamine) and BPDA (3,3', 4,
- a second polyamic acid solution (refractive index: about 1.56) prepared by condensation of 4'-Biphenyltetracarboxylic dianhydride) and TFMB (2,2'-Bis (trifluoromethyl) benzidine) in a ratio of 10:90 based on the weight of solids
- first Polyamic acid prepared by mixing with a second polyamic acid
- a film-forming composition prepared by mixing a high refractive filler (rutile TiO 2 , refractive index: about 2.8) having a particle size in the range of no scattering property
- a polyimide substrate (D) was produced in the same manner as in Example 1. The haze was evaluated according to ASTM D1003
- An organic electronic device was formed on the polyimide substrate A prepared in Preparation Example 1, to prepare a device of the type shown in FIG. 2.
- the organic electronic device was manufactured by encapsulating with. The measured quantum efficiency of the manufactured organic electronic device was about 35.4%.
- a barrier layer was formed on the polyimide substrate (B).
- the barrier layer is composed of a layer of Al 2 O 3 having a refractive index of about 1.6 to 1.8 when deposited alone by ALD (Atomic Layer Deposition) method and a TiO 2 having a refractive index of about 2.0 to 2.4 when deposited alone.
- the layers were alternately deposited to form a final refractive index of about 1.8.
- a layer of Al 2 O 3 was formed by alternating adsorption of a layer of trimethylaluminium and a water (H 2 O) layer as a precursor at a temperature of about 200 ° C.
- the layer of TiO 2 was also known as ALD.
- ALD atomic layer deposition
- the layer of TiO 2 was also known as ALD.
- the thicknesses of the layers of Al 2 O 3 and the layers of TiO 2 were in the range of about 2 nm to 5 nm, respectively, to finally form a barrier layer having a thickness of about 40 nm.
- a hole injectable transparent electrode layer, a hole transport layer, a first light emitting unit, an n-type organic semiconductor layer, a p-type organic semiconductor layer, and a light emission wavelength using a known material on the barrier layer are in the range of about 380 to 500 nm.
- the second light emitting unit, the hole block layer, the electron transport layer, the electron injection layer, and the electron injection reflective electrode layer in the range of about 500 to 700 nm are sequentially formed to form an element region, and the element region is encapsulated with an appropriate encapsulation material.
- the organic electronic device was manufactured. The measured quantum efficiency of the manufactured organic electronic device was about 41.6%.
- An organic electronic device was formed in the same manner as in Example 1, except that the substrate C prepared in Preparation Example 3 was applied.
- the measured quantum efficiency of the manufactured organic electronic device was about 41.6%.
- An organic electronic device was formed in the same manner as in Example 1, except that the substrate D prepared in Preparation Example 4 was applied.
- the measured quantum efficiency of the organic electronic device was about 42%.
- An organic electronic device was formed in the same manner as in Example 1, except that a polyimide substrate having no uneven pattern formed by coating the same film forming composition as used in Preparation Example 1 to a thickness of about 20 ⁇ m was used. .
- the measured quantum efficiency of the manufactured organic electronic device was about 31.9%.
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Abstract
Description
Claims (20)
- 고분자 기재층 또는 상기 기재층의 전구체의 층의 적어도 일면에 요철 패턴을 형성하는 단계를 포함하는 유기전자장치용 기판의 제조 방법.
- 제 1 항에 있어서, 요철 패턴을 형성하는 단계는, 표면에 요철이 형성되어 있는 몰드상에 고분자 기재층 또는 그 전구체의 층을 상기 몰드의 요철 형상에 접하도록 형성하는 단계를 포함하는 유기전자장치용 기판의 제조 방법.
- 제 1 항에 있어서, 요철 패턴이 형성되어 있는 기재층 또는 그 전구체의 층의 상기 요철 패턴이 형성되어 있는 면에 제 2 기재층을 형성하는 단계를 추가로 포함하는 유기전자장치용 기판의 제조 방법.
- 제 3 항에 있어서, 요철 패턴이 형성되어 있는 기재층의 상기 요철 패턴에 대향하는 제 2 기재층의 면에는 요철 패턴이 형성되어 있는 유기전자장치용 기판의 제조 방법.
- 제 1 항에 있어서, 고분자 기재층 또는 그 전구체는 550 nm 파장의 광에 대한 굴절률이 1.4 이상인 유기전자장치용 기판의 제조 방법.
- 제 1 항에 있어서, 헤이즈가 3% 내지 90%의 범위 내에 있는 유기전자장치용 기판의 제조 방법.
- 제 1 항에 있어서, 요철 패턴의 오목부에 기재층과는 굴절률이 다른 물질을 충전하는 단계를 추가로 수행하는 유기전자장치용 기판의 제조 방법.
- 제 7 항에 있어서, 기재층과 굴절률이 다른 물질은 SiON, TiO2, SiO2, Al2O3, Ta2O3, Ti3O3, TiO2, TiO, ZrO2, Nb2O3, CeO2, ZnS 또는 에폭시 수지인 유기전자장치용 기판의 제조 방법.
- 제 1 항에 있어서, 고분자 기재층 또는 그 전구체의 층은, 테트라카복실산 이무수물 및 디아민 화합물의 축합 단위 또는 그 이미드화 단위를 포함하는 유기전자장치용 기판의 제조 방법.
- 제 1 항에 있어서, 고분자 기재층 또는 그 전구체의 층은, 제 1 테트라카복실산 이무수물 및 제 1 디아민 화합물의 축합 단위 또는 그 이미드화 단위인 제 1 단위와 제 2 테트라카복실산 이무수물 및 제 2 디아민 화합물의 축합 단위 또는 그 이미드화 단위인 제 2 단위를 포함하는 공중합체를 포함하는 유기전자장치용 기판의 제조 방법.
- 제 1 항에 있어서, 고분자 기재층 또는 그 전구체의 층은, 제 1 테트라카복실산 이무수물 및 제 1 디아민 화합물의 축합 단위 또는 그 이미드화 단위인 제 1 단위를 포함하는 제 1 중합체와 제 2 테트라카복실산 이무수물 및 제 2 디아민 화합물의 축합 단위 또는 그 이미드화 단위인 제 2 단위를 포함하는 제 2 중합체를 포함하는 유기전자장치용 기판의 제조 방법.
- 제 10 항 또는 제 11 항에 있어서, 제 1 단위의 굴절률과 제 2 단위의 굴절률의 차이의 절대값이 0.01 이상인 유기전자장치용 기판의 제조 방법.
- 제 10 항 또는 제 11 항에 있어서, 제 1 단위에 포함되는 극성 관능기의 몰수와 제 2 단위에 포함되는 극성 관능기의 몰수의 차이의 절대값이 2 이상인 유기전자장치용 기판의 제조 방법.
- 적어도 일면에 요철 패턴이 형성되어 있는 고분자 기재층인 유기전자장치용 기판.
- 제 14 항에 있어서, 고분자 기재층의 요철 패턴이 형성되어 있는 면에 제 2 고분자 기재층이 형성되어 있고, 상기 요철 패턴에 의해 내부에 공간이 형성되어 있는 유기전자장치용 기판.
- 고분자 기재층의 적어도 일면에 요철 패턴을 형성하는 단계; 및 상기 요철패턴이 형성된 기재층을 기판으로 하여 상기 기재층상에 유기전자소자를 형성하는 단계를 포함하는 유기전자장치의 제조 방법.
- 일면에 요철 패턴이 형성되어 있는 고분자 기재층인 유기전자장치용 기판; 상기 기재층의 요철 패턴이 형성되어 있지 않은 면에 형성되어 있는 소자 영역을 포함하는 유기전자장치.
- 제 17 항에 있어서, 유기전자장치용 기판은, 고분자 기재층의 요철 패턴이 형성되어 있는 면에 제 2 고분자 기재층을 추가로 포함하고, 상기 요철 패턴에 의해 내부에 공간이 형성되어 있는 유기전자장치.
- 제 17 항의 유기전자소자를 포함하는 디스플레이용 광원.
- 제 17 항의 유기전자소자를 포함하는 조명 기기.
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US14/910,230 US9691995B2 (en) | 2013-12-04 | 2014-12-04 | Method of manufacturing substrate for organic electronic device |
EP14866998.9A EP3016090B1 (en) | 2013-12-04 | 2014-12-04 | Method for manufacturing an organic electronic device |
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WO2015084073A1 (ko) | 2013-12-04 | 2015-06-11 | 주식회사 엘지화학 | 유기전자장치용 기판의 제조 방법 |
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US9691995B2 (en) | 2013-12-04 | 2017-06-27 | Lg Chem, Ltd. | Method of manufacturing substrate for organic electronic device |
CN106206945A (zh) * | 2016-09-08 | 2016-12-07 | 京东方科技集团股份有限公司 | 一种柔性基板及其制备方法、柔性显示装置 |
US10749125B2 (en) | 2016-09-08 | 2020-08-18 | Boe Technology Group Co., Ltd. | Flexible substrate and fabrication method thereof, and flexible display apparatus |
US11374184B2 (en) | 2016-09-08 | 2022-06-28 | Boe Technology Group Co., Ltd. | Flexible substrate and fabrication method thereof, and flexible display apparatus |
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US12029105B2 (en) | 2016-09-08 | 2024-07-02 | Boe Technology Group Co., Ltd. | Flexible substrate and fabrication method thereof, and flexible display apparatus |
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US11631700B2 (en) | 2017-12-29 | 2023-04-18 | Lg Display Co., Ltd. | Flexible display apparatus with porous substrate |
TWI777309B (zh) * | 2019-12-10 | 2022-09-11 | 南韓商Lg顯示器股份有限公司 | 顯示裝置 |
US11556150B2 (en) | 2019-12-10 | 2023-01-17 | Lg Display Co., Ltd. | Display device |
US11822392B2 (en) | 2019-12-10 | 2023-11-21 | Lg Display Co., Ltd. | Display device |
Also Published As
Publication number | Publication date |
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EP3016090A4 (en) | 2017-03-15 |
JP6361994B2 (ja) | 2018-07-25 |
US20160204365A1 (en) | 2016-07-14 |
EP3016090B1 (en) | 2021-01-27 |
TW201535824A (zh) | 2015-09-16 |
JP2016527562A (ja) | 2016-09-08 |
EP3016090A1 (en) | 2016-05-04 |
KR20150065164A (ko) | 2015-06-12 |
US9691995B2 (en) | 2017-06-27 |
CN105408949A (zh) | 2016-03-16 |
TWI584511B (zh) | 2017-05-21 |
CN105408949B (zh) | 2019-08-02 |
KR101642603B1 (ko) | 2016-07-25 |
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