WO2012047054A2 - 유기전자소자용 기판 및 그 제조방법 - Google Patents
유기전자소자용 기판 및 그 제조방법 Download PDFInfo
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- WO2012047054A2 WO2012047054A2 PCT/KR2011/007432 KR2011007432W WO2012047054A2 WO 2012047054 A2 WO2012047054 A2 WO 2012047054A2 KR 2011007432 W KR2011007432 W KR 2011007432W WO 2012047054 A2 WO2012047054 A2 WO 2012047054A2
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- substrate
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- organic electronic
- scattering
- electronic device
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- 239000000758 substrate Substances 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000002245 particle Substances 0.000 claims abstract description 39
- 239000011230 binding agent Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 33
- 239000010955 niobium Substances 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 16
- 239000002131 composite material Substances 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 8
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052709 silver Inorganic materials 0.000 claims description 7
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 4
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 4
- 229910003437 indium oxide Inorganic materials 0.000 claims description 4
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims description 4
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 4
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 4
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 4
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 claims description 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 claims description 4
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 4
- 229910001887 tin oxide Inorganic materials 0.000 claims description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910000449 hafnium oxide Inorganic materials 0.000 claims description 3
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 3
- 229960001763 zinc sulfate Drugs 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
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- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
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- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 2
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 239000005083 Zinc sulfide Substances 0.000 claims 1
- 229910052984 zinc sulfide Inorganic materials 0.000 claims 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims 1
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- 125000000217 alkyl group Chemical group 0.000 description 1
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Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
-
- 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
- H10K50/814—Anodes combined with auxiliary electrodes, e.g. ITO layer combined with metal lines
-
- 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
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/331—Nanoparticles used in non-emissive layers, e.g. in packaging layer
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24364—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] with transparent or protective coating
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24372—Particulate matter
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24372—Particulate matter
- Y10T428/24413—Metal or metal compound
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24372—Particulate matter
- Y10T428/24421—Silicon containing
Definitions
- the present invention relates to a substrate for an organic electronic device having a novel structure, a method of manufacturing the same, and an organic electronic device including the substrate.
- An organic electric device refers to a device capable of inducing a flow of electric charge between an electrode and an organic material using holes and / or electrons. According to the principle of operation, the exciton formed in the organic material layer is separated into electrons and holes by photons introduced into the device from an external light source, and the separated electrons and holes are transferred to different electrodes to be used as current sources.
- OLEDs organic light emitting diodes
- OPC organic photoconductor
- An organic light emitting device refers to a self-luminous device using an electroluminescence phenomenon that emits light when a current flows through a light emitting organic compound.
- Organic light emitting devices are attracting attention as next-generation materials in various industries, such as displays and lighting, because they have excellent thermal stability and low driving voltage.
- the present invention relates to a substrate for an organic electronic device
- It is formed on the scattering layer, and includes a flat layer for flattening the surface curvature due to the uneven structure of the scattering layer,
- the refractive index (Na) of the scattering particles and the refractive index (Nb) of the flat layer satisfies the relationship of the following formula (1):
- Na is the refractive index of the scattering particles
- Nb means the refractive index of the flat layer
- the present invention provides a method of manufacturing the substrate and an organic electronic device including the substrate.
- the substrate for an organic electronic device according to the present invention can improve light extraction efficiency and apply a uniform voltage to the entire device without degrading device performance.
- the manufacturing process is simple.
- FIG. 1 is a schematic diagram showing a process for manufacturing a substrate for an organic electronic device according to an embodiment of the present invention
- FIG. 2 is a schematic view showing a cross section of a substrate for an organic electronic device according to one embodiment of the present invention
- FIG 3 is a schematic view showing a cross section of an organic electronic device according to an embodiment of the present invention.
- It is formed on the scattering layer, and includes a flat layer for flattening the surface curvature due to the uneven structure of the scattering layer,
- the refractive index Na of the scattering particles and the refractive index Nb of the flat layer satisfy the following Equation 1.
- Na is the refractive index of the scattering particles
- Nb means the refractive index of the flat layer
- an increase in sheet resistance of the device can be alleviated or reduced.
- ITO indium tin oxide
- an ITO electrode generates sheet resistance of about 10 ⁇ / cm 2 .
- the conductive pattern is formed in the scattering layer, thereby reducing the sheet resistance of the first electrode and increasing the uniformity of light emission.
- one surface of the conductive pattern may be a structure exposed to the flat surface formed by the flat layer.
- the conductive pattern exposed on the flat surface formed by the flat layer may be electrically connected to the electrode layer formed later.
- the area ratio of the conductive patterns exposed on the flat surface is in the range of 0.001 to 50%, specifically 0.01 to 30%, more specifically 10 to 20%, based on the total flat surface area. Can be.
- the height of the conductive pattern may be in the range of 0.01 to 50 ⁇ m, more specifically 0.1 to 10 ⁇ m, the width of the conductive pattern may be in the range of 0.1 to 500 ⁇ m, more specifically 1 to 100 ⁇ m.
- the conductive pattern is not particularly limited as long as it is a material having electrical conductivity, and may be formed of one or two or more combinations selected from the group consisting of Ag, Au, Al, Cu, Cr, and Mo / Al / Mo. More specifically, the conductive pattern may be in the form of a network of a conductive material containing silver (Ag) paste, a metal paste containing silver, or carbon.
- the shape of the metal conductive pattern is not particularly limited, and may be, for example, a shape in which a plurality of metal conductive lines are parallel, diagonal, lattice, honeycomb or amorphous.
- total reflection occurs at an interface between each layer constituting the device.
- the first total reflection occurs at the interface between the light generated in the organic layer and the transparent electrode having a refractive index of 1.8 or more and the glass substrate having a refractive index of about 1.5.
- the second total reflection occurs at the interface between the glass substrate having the refractive index of 1.8 and the air having the refractive index of 1.0. Due to such total internal reflection of the device, luminous efficiency may deteriorate and luminance may decrease.
- the refractive index (Na) of the scattering particles may be 1.0 to 2.0
- the refractive index (Nb) of the flat layer may be 1.7 to 2.5
- the refractive index (Na) of the scattering particles is 1.2 To 1.8
- the refractive index Nb of the flat layer may be 1.8 to 2.0.
- the refractive index (Na) of the scattering particles may be 2.0 to 3.5
- the refractive index (Nb) of the flat layer may be 1.7 to 2.5
- the refractive index (Na) of the scattering particles is 2.2 to 3.0
- the refractive index Nb of the flat layer may be 1.8 to 2.0.
- refractive index shows the result of measuring the refractive index with respect to the light of 400-450 nm wavelength under vacuum conditions.
- the substrate is not particularly limited, and may be a transparent substrate, for example, may be a light transmissive plastic substrate or a glass substrate.
- the scattering particles are not particularly limited as long as they can scatter light using a difference in refractive index from the flat layer, and for example, silicon, silica, glass, titanium oxide, magnesium fluoride, zirconium oxide, alumina, cerium oxide, and oxidation It may be one or more selected from the group consisting of hafnium, niobium pentoxide, tantalum pentoxide, indium oxide, tin oxide, indium tin oxide, zinc oxide, silicon, zinc sulfate, calcium carbonate, barium sulfate, silicon nitride and aluminum nitride. .
- the scattering particles may be formed on the substrate by bonding with a binder, and may form a single layer or a multilayer structure or a non-uniform laminated structure.
- the scattering particles may be a structure formed in a single layer on the substrate.
- the scattering particles may be spherical, ellipsoidal, or amorphous, preferably spherical or ellipsoidal.
- the average diameter of the scattering particles may be 0.01 to 20 ⁇ m, preferably 0.1 to 5 ⁇ m.
- the binder in the scattering layer is not particularly limited and may be an organic and inorganic or organic-inorganic composite binder.
- the binder may be an inorganic or organic-inorganic composite binder.
- Inorganic or organic-inorganic composite binders have better heat resistance and chemical resistance than organic binders, which is advantageous for device performance, particularly lifespan, and do not cause deterioration in high temperature processes, photo processes, and etching processes of 150 ° C. There is an advantage in that it is advantageous for manufacturing a variety of devices.
- the binder is an inorganic or organic-inorganic composite based on silicon oxide, silicon nitride, silicon oxynitride, alumina and siloxane bonds (Si-O).
- polycondensation may be performed using siloxane to form an inorganic binder based on [Si-O] bond, or a form of an organic-inorganic complex in which an alkyl group is not completely removed from the siloxane bond may be used.
- the flat layer may include an inorganic binder or an organic-inorganic composite binder.
- the flat layer may be an inorganic or organic-inorganic composite based on silicon nitride, silicon oxynitride, alumina, and siloxane bond (Si-O). It may include one or more selected from the group consisting of.
- the flat layer may further include a high refractive filler.
- the high refractive filler is to reduce the difference in refractive index between the flat layer and the organic device.
- the high refractive filler is not particularly limited as long as it can be dispersed in the flat layer to increase the refractive index, alumina, aluminum nitride, zirconium oxide, titanium oxide, cerium oxide, hafnium oxide, niobium pentoxide, tantalum pentoxide, indium oxide, tin oxide And at least one selected from the group consisting of indium tin oxide, zinc oxide, silicon, zinc sulfate, calcium carbonate, barium sulfate, and silicon nitride.
- the high refractive filler may be titanium dioxide.
- the thickness of the flat layer can be appropriately adjusted according to the device characteristics.
- the flat layer average thickness may be 0.5 times or 2 times or more of the scattering particle average diameter, for example, 0.5 to 10 times, or 1 to 5 times the range.
- FIG. 1 schematically illustrates a lamination structure of a substrate for an organic electronic device according to one embodiment of the present invention.
- a scattering layer 20 including scattering particles 40 and a conductive pattern 30 is formed on a substrate 10.
- an uneven structure is formed on the opposite side.
- the flat layer 21 is formed on the uneven structure of the scattering layer.
- An organic electronic device or the like may be further stacked on the flat layer 21.
- the present invention also provides a method of manufacturing the substrate for an organic electronic device.
- the manufacturing method In one embodiment, the manufacturing method,
- the method may include forming a flat layer on the scattering layer formed.
- the conductive pattern may be formed on the sacrificial substrate by using a roller printing method.
- the material or shape for forming the conductive pattern is the same as described above.
- the scattering layer may be formed by CVD (chemical vapor deposition), PVD (physical vapor deposition) or sol-gel coating.
- the forming of the scattering layer may include applying an coating solution including an inorganic or organic-inorganic composite binder and scattering particles on a substrate; And condensation reaction of the binder included in the coating solution to form a matrix. In the process of condensation of the binder contained in the coating solution, an uneven structure by scattering particles may be formed.
- the forming of the flat layer may be performed by CVD (chemical vapor deposition), PVD (physical vapor deposition) or sol-gel coating.
- the forming of the flat layer may include applying a coating solution including an inorganic binder and a high refractive filler on the scattering layer; And condensation reaction of the binder included in the coating solution to form a matrix.
- the process of polishing the upper surface of the flat layer may be further roughened.
- the upper surface of the flat layer may be more flat.
- electrical connection between the conductive pattern exposed on the upper surface of the flat layer and the first electrode stacked later may be promoted.
- the process of polishing the upper surface of the flat surface is not particularly limited, and may be performed through, for example, a chemical mechanical polishing (CMP) process.
- the conductive pattern 30 is formed on the glass substrate 10.
- the conductive pattern 30 can be formed by a roll printing method.
- step (B) the coating liquid in which the scattering particles are dispersed in the inorganic or organic-inorganic composite binder is applied onto the substrate, and, for example, the scattering layer may be formed by sol-gel coating.
- the binder component shrinks during the curing process of the formed scattering layer 20, and the uneven structure is formed by the scattering particles 40 and / or the conductive pattern 30.
- the flat layer 21 is formed on the scattering layer 20 on which the uneven structure is formed by using a siloxane binder in which titanium dioxide is mixed.
- step (D) the organic electronic device may be stacked on the prepared substrate for an organic electronic device.
- the organic electronic device may be formed, for example, by sequentially stacking the first transparent electrode 40, the organic layer 50 including the emission layer, and the second electrode 60.
- the present invention provides an organic electronic device including the substrate described above and the organic electronic device formed on the substrate. In some cases, it may further include an additional laminated structure for improving the characteristics of the device.
- the structure laminated on the substrate for an organic electronic device may be variously changed or added by those skilled in the art.
- the organic electronic device may be an organic light emitting device.
- the organic electronic device may include a substrate for an organic electronic device; A first transparent electrode formed on the substrate; An organic layer including one or more light emitting layers; And a second electrode, and further comprising a metal line between the first transparent electrode and the organic electronic device to compensate for the voltage drop of the first transparent electrode.
- FIG. 3 schematically illustrates a laminated structure of an organic electronic device including a substrate for an organic electronic device according to an embodiment of the present invention.
- the organic electronic device may be configured by sequentially forming the first electrode 40, the organic layer 50 including the emission layer, and the second electrode 60 on the substrate manufactured in FIG. 1. .
- a coating solution was prepared by sufficiently dispersing 1 g of polymer beads (XX75BQ, 3 ⁇ m in diameter, manufactured by Sekisui) having a refractive index of about 1.52 in 10 g of TMOS (Si (OCH 3 ) 4 , siloxane).
- TMOS Si (OCH 3 ) 4 , siloxane
- a conductive pattern in the form of a lattice was formed on the glass substrate by a roll printing method using a silver (Ag) paste.
- the coating solution prepared on the glass substrate on which the conductive pattern was formed was applied.
- the applied coating solution was cured to form a scattering layer.
- an inorganic binder in which a high refractive filler (titanium dioxide) is dispersed therein was applied and dried on a scattering layer to prepare a substrate for an organic electronic device, in which a flat layer was formed.
- the refractive index difference between the flat layer and the polymer bead was 0.4 by controlling the content of the high refractive filler in forming the flat layer.
- the first electrode, the organic layer, and the second electrode were sequentially stacked on the high refractive layer of the prepared substrate for an organic electronic device, thereby manufacturing a white OLED having a light emitting region of 2 ⁇ 2 mm 2 .
- Indium Tin Oxide (ITO) was used as the first electrode
- Al aluminum
- the organic layer was formed in a structure including a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and an electron injection layer.
- Each laminated structure used a material commonly used in the field of white OLED manufacturing, and the formation method thereof was also used in a general manner.
- a substrate was prepared in the same manner as in Example 1, except that the amount of scattering particles was changed to 1.5 g and the refractive index difference between the polymer beads and the flat layer was adjusted to 0.8 at the time of preparing the coating solution, An OLED device was formed in.
- a substrate was manufactured in the same manner as in Example 1, except that TEOS (Si (OC 2 H 5 ) 4 , siloxane) was used as a binder in the process of manufacturing a substrate for an organic electronic device.
- OLED device was manufactured using the same.
- a substrate was manufactured in the same manner as in Example 1, except that methylmethacrylate was used instead of siloxane in the process of manufacturing a substrate for an organic electronic device, and the refractive index difference between the flat layer and the polymer bead was adjusted to 0.2. And an OLED device was manufactured using the prepared board
- the substrate was manufactured in the same manner as in Example 1 except that the refractive index difference between the flat layer and the polymer bead was adjusted to 0.2 in the process of manufacturing the substrate for the organic electronic device, and the conductive pattern was not formed.
- An OLED device was manufactured using the substrate.
- the light extraction efficiency of the OLED devices manufactured in Examples 1 and 2 and Comparative Example 1 was measured. Specifically, each OLED was driven under constant current driving conditions of 0.4 mA, and the light extraction efficiency was evaluated by measuring the extracted light flux. The measurement results are shown in Table 1 below.
- Na means the refractive index of the scattering particles
- Nb means the refractive index of the flat layer, it means that the difference in refractive index is substantially absent.
- Example 1 Comparative Example 2 Sheet Resistance ( ⁇ / cm 2 ) 5.1 5.2 38
- the substrate for an organic electronic device according to the present invention can be utilized in various organic electronic device fields including a display device or a lighting device.
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Abstract
Description
No. | 굴절율 차이(|Na-Nb|) | 광속(Luminous emittance, lm) |
대조군 | N.A. | 0.052 |
비교예 1 | 0.2 | 0.068 |
실시예 1 | 0.4 | 0.075 |
실시예 2 | 0.8 | 0.080 |
실시예 1 | 실시예 2 | 비교예 2 | |
면저항(Ω/cm2) | 5.1 | 5.2 | 38 |
Claims (19)
- 기재;기재상에 형성되며, 전극의 면저항을 감소시키는 도전성 패턴, 광을 산란시키는 산란 입자 및 바인더를 포함하고, 또한 상기 기재와 반대면에는 요철구조를 형성하는 산란층; 및산란층상에 형성되며, 산란층의 요철구조로 인한 표면 굴곡을 평탄화시키는 평탄층을 포함하고,상기 산란 입자의 굴절율(Na) 및 평탄층의 굴절율(Nb)은 하기 수학식 1의 관계를 만족하는 유기전자소자용 기판:[수학식 1]|Na-Nb|≥0.3상기 식에서, Na는 산란 입자의 굴절율이고, Nb는 평탄층의 굴절율을 의미한다.
- 제 1 항에 있어서,도전성 패턴의 일면은 평탄층에 의해 형성된 평탄면에 노출된 구조이고, 평탄면에 노출되는 도전성 패턴의 면적 비율은, 평탄면 전체 면적을 기준으로, 0.001% 내지 50%인 유기전자소자용 기판.
- 제 1 항에 있어서,도전성 패턴의 높이는 0.01 ㎛ 내지 50 ㎛이고, 도전성 패턴의 폭은 0.1 ㎛ 내지 500 ㎛인 유기전자소자용 기판.
- 제 1 항에 있어서,도전성 패턴은 Ag, Au, Al, Cu, Cr 및 Mo/Al/Mo로 이루어진 군으로부터 선택되는 하나 이상을 포함하는 유기전자소자용 기판.
- 제 1 항에 있어서,도전성 패턴은 은(Ag) 페이스트, 은을 포함한 금속 페이스트 또는 카본을 포함하는 도전 물질의 네트워크 형태인 유기전자소자용 기판.
- 제 1 항에 있어서,산란 입자의 굴절율(Na)은 1.0 내지 2.0이고, 평탄층의 굴절율(Nb)은 1.7 내지 2.5인 유기전자소자용 기판.
- 제 1 항에 있어서,산란 입자의 굴절율(Na)은 2.0 내지 3.5이고, 평탄층의 굴절율(Nb)은 1.7 내지 2.5인 유기전자소자용 기판.
- 제 1 항에 있어서,산란 입자는 실리콘, 실리카, 글래스, 산화 티탄, 불화 마그네슘, 산화 지르코늄, 알루미나, 산화 세륨, 산화 하프늄, 오산화 니오브, 오산화 탄탈, 산화 인듐, 산화 주석, 산화 인듐 주석, 산화 아연, 규소, 황아연, 탄산칼슘, 황산바륨, 실리콘 나이트라이드 및 알루미늄 나이트라이드로 구성된 군으로부터 선택되는 1 종 이상인 유기전자소자용 기판.
- 제 1 항에 있어서,산란 입자의 평균 직경은 0.01 ㎛ 내지 20 ㎛인 유기전자소자용 기판.
- 제 1 항에 있어서,산란층 내의 바인더는 무기 또는 유무기 복합체 바인더인 유기전자소자용 기판.
- 제 10 항에 있어서,산란층 내의 바인더는 실리콘 산화물; 실리콘 나이트라이드; 실리콘 옥시나이트라이드; 알루미나; 및 실록산 결합을 기반으로 하는 무기 또는 유무기 복합체로 이루어진 군으로부터 선택되는 1 종 이상인 유기전자소자용 기판.
- 제 1 항에 있어서,평탄층은 무기 바인더 또는 유무기 복합체 바인더를 포함하는 유기전자소자용 기판.
- 제 12 항에 있어서,평탄층은 실리콘 산화물; 실리콘 나이트라이드; 실리콘 옥시나이트라이드; 알루미나; 및 실록산 결합을 기반으로 하는 무기 또는 유무기 복합체로 이루어진 군으로부터 선택되는 1 종 이상을 포함하는 유기전자소자용 기판.
- 제 12 항에 있어서,평탄층은 고굴절 필러를 더 포함하는 유기전자소자용 기판.
- 제 14 항에 있어서,고굴절 필러는 알루미나, 알루미늄 나이트라이드, 산화 지르코늄, 산화 티탄, 산화 세륨, 산화 하프늄, 오산화 니오브, 오산화 탄탈, 산화 인듐, 산화 주석, 산화 인듐 주석, 산화 아연, 규소, 황아연, 탄산칼슘, 황산바륨 및 실리콘 나이트라이드로 구성된 군으로부터 선택된 1 종 이상인 유기전자소자용 기판.
- 기재상에 도전성 패턴을 형성하는 단계;형성된 도전성 패턴 사이에 바인더 및 산란 입자를 포함하는 코팅액을 충진하여 산란층을 형성하는 단계; 및형성된 산란층 위에 평탄층을 형성하는 단계를 포함하는 유기전자소자용 기판의 제조방법.
- 제 16 항에 있어서,산란층을 형성하는 단계는 CVD, PVD 또는 졸겔 코팅에 의해 수행하는 유기전자소자용 기판의 제조방법.
- 제 16 항에 있어서,평탄층을 형성하는 단계 이후에,형성된 평탄층의 상부면을 연마하는 단계를 더 포함하는 유기전자소자용 기판의 제조방법.
- 제 1 항 내지 제 15 항 중 어느 한 항에 따른 기판 및 상기 기판 상에 형성되는 유기전자소자를 포함하는 유기전자장치.
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US13/878,151 US9448339B2 (en) | 2010-10-07 | 2011-10-07 | Substrate for an organic electronic element and a production method therefor |
JP2013532732A JP5590754B2 (ja) | 2010-10-07 | 2011-10-07 | 有機電子素子用基板、有機電子素子用基板の製造方法および有機電子装置 |
CN201180048190.9A CN103155194B (zh) | 2010-10-07 | 2011-10-07 | 有机电子器件用衬底及其制造方法 |
US13/942,464 US20130302565A1 (en) | 2010-10-07 | 2013-07-15 | Substrate for an organic electronic element and a production method therefor |
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TWI663758B (zh) * | 2012-07-31 | 2019-06-21 | Lg化學股份有限公司 | 用於有機電子裝置之基板 |
EP2882006B1 (en) * | 2012-07-31 | 2021-05-19 | LG Chem, Ltd. | Substrate for organic electronic device |
CN105706263B (zh) | 2012-11-30 | 2017-11-24 | 株式会社Lg化学 | 用于有机电子器件的基板 |
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CN103531720A (zh) * | 2013-10-29 | 2014-01-22 | 南京第壹有机光电有限公司 | 一种高效发光的电致发光器件 |
CN105408949B (zh) * | 2013-12-04 | 2019-08-02 | 株式会社Lg化学 | 用于有机电子器件的基板的制造方法 |
WO2015083660A1 (ja) * | 2013-12-06 | 2015-06-11 | コニカミノルタ株式会社 | 有機エレクトロルミネッセンス素子 |
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DE102014107099B4 (de) | 2014-05-20 | 2019-10-31 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Lichtstreuendes Schichtsystem, Verfahren zu seiner Herstellung und Verwendung des Schichtsystems |
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KR101632614B1 (ko) * | 2014-12-24 | 2016-06-22 | 코닝정밀소재 주식회사 | 유기발광소자용 광추출 기판 제조방법, 유기발광소자용 광추출 기판 및 이를 포함하는 유기발광소자 |
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US9448339B2 (en) | 2016-09-20 |
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CN103155194B (zh) | 2016-02-24 |
KR101114352B1 (ko) | 2012-02-13 |
EP2613374A4 (en) | 2017-10-11 |
EP2613374A2 (en) | 2013-07-10 |
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