WO2012021024A2 - 유기 발광 소자 및 이의 제조 방법 - Google Patents
유기 발광 소자 및 이의 제조 방법 Download PDFInfo
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- WO2012021024A2 WO2012021024A2 PCT/KR2011/005945 KR2011005945W WO2012021024A2 WO 2012021024 A2 WO2012021024 A2 WO 2012021024A2 KR 2011005945 W KR2011005945 W KR 2011005945W WO 2012021024 A2 WO2012021024 A2 WO 2012021024A2
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
- H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/83—Electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/81—Anodes
- H10K50/813—Anodes characterised by their shape
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/822—Cathodes characterised by their shape
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/88—Terminals, e.g. bond pads
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/60—Forming conductive regions or layers, e.g. electrodes
Definitions
- the present invention relates to an organic light emitting device and a method of manufacturing the same. Specifically, the present invention relates to an organic light emitting device and a method for manufacturing the same, which are excellent in mass production and which can simplify deposition facilities.
- the organic light emitting device is composed of two opposite electrodes and a thin film of organic material having a multilayer semiconductor property therebetween.
- the organic light emitting device having such a configuration uses a phenomenon of converting electrical energy into light energy using an organic material, that is, an organic light emitting phenomenon.
- an organic light emitting phenomenon Specifically, in the structure in which the organic material layer is positioned between the anode and the cathode, when a voltage is applied between the two electrodes, holes are injected into the organic material and electrons are injected into the cathode. When the injected holes and electrons meet, excitons are formed, and when the excitons fall back to the ground, they shine.
- the organic light emitting device As described above, light generated in the organic material layer is emitted through the light transmitting electrode, and the organic light emitting device may be classified into top emission, bottom emission, and double emission.
- the organic light emitting device may be classified into top emission, bottom emission, and double emission.
- one of the two electrodes In the case of the front emission or the bottom emission type, one of the two electrodes must be a light transmissive electrode, and in the case of the double emission type, both electrodes must be the light transmissive electrode.
- the device In order to use an organic light emitting device as an illumination, the device must be driven at a high brightness unlike a conventional color display, and maintain a constant luminance like a conventional lighting. In order to sufficiently improve the luminance of the organic light emitting device, light emission should be performed in a large area, and in order to emit light in such a large area, a high driving current should be used. In addition, in order to maintain a constant brightness in a large area, such a high current must be uniformly injected into the device of a large area.
- an organic light emitting device for illumination has a structure in which a transparent electrode, an organic material layer, and a metal electrode are sequentially deposited on a substrate. Since the area of the organic material layer and the planar pattern of the deposition pattern of the metal electrode are different from each other when the organic light emitting device is manufactured, different masks are used to deposit the organic layer and the metal electrode. Accordingly, the mask needs to be replaced in the middle of the deposition process, the deposition equipment is complicated, the productivity is not high, and the manufacturing cost is also high.
- the cluster type evaporator which is generally used has an organic layer mask or a metal electrode mask prepared in each deposition chamber, and when the substrate enters the deposition chamber, the mask and the substrate are laminated, and then the organic or metal is deposited.
- the number of masks may be increased in proportion to the number of deposition chambers.
- This method requires a transfer time of a substrate, a laminate time of a substrate and a mask, and a deposition time of an organic material or a metal, and thus there is a limit to improving productivity.
- in-line deposition equipment can be omitted because most of the preparation process has a lot of opportunities to improve the productivity.
- the mask replacement process is required in the process of changing from the organic material deposition process to the metal electrode deposition process in the in-line process, in this process productivity may be lowered.
- the present invention is to provide an organic light emitting device and a method of manufacturing the same, which is excellent in productivity and can be manufactured by simplifying a deposition apparatus.
- the present invention is to provide an organic light emitting device and a method of manufacturing the same by reducing the number of masks required in the in-line process, to increase the productivity, and to reduce the production cost by eliminating the mask replacement process during the deposition process.
- An exemplary embodiment of the present invention is an organic light emitting device having a structure in which a first electrode, an organic material layer, and a second electrode are sequentially stacked on a substrate, wherein the shape of the second electrode is the same as that of the organic material layer.
- An organic light emitting device is provided.
- Another embodiment of the present invention is an organic light emitting device having a structure in which a first electrode, an organic material layer, and a second electrode are sequentially stacked on a substrate, wherein an external terminal of the second electrode is disposed on the substrate.
- An organic light emitting device is provided that is insulated and has a conductive pattern for electrically connecting the second electrode and an external terminal of the second electrode.
- Another embodiment of the present invention includes forming a first electrode on a substrate; Forming an organic material layer on the first electrode by using a mask; And forming a second electrode on the organic material layer, wherein the organic material layer and the second electrode are formed with the same mask.
- the organic light emitting device according to the present invention has the same shape of the pattern of the organic material layer and the pattern of the second electrode, the same mask may be used when forming the organic material layer and the second electrode, without having to replace the mask, respectively.
- Productivity of the organic light emitting device can be increased, and manufacturing costs can be reduced.
- the deposition equipment can be simplified when manufacturing the organic light emitting device, it is possible to obtain the effect of reducing the investment cost.
- FIG. 1 is a view showing an embodiment of a conventional organic light emitting device.
- FIG. 2 is a view showing an embodiment of an organic light emitting device according to the present invention.
- FIG 3 is a view comparing current flow in one embodiment of an organic light emitting device according to the related art and the present invention.
- FIG 4 and 5 are views showing one specific example of various forms of conductive patterns in the organic light emitting device according to the present invention.
- FIG. 6 is a view showing one specific example of the angle between the conductive pattern and the external terminal plane of the second electrode in the organic light emitting device according to the present invention.
- FIG. 7 to 10 are views illustrating a process of forming the organic material layer and the upper electrode with one mask in accordance with the present invention.
- An organic light emitting diode is an organic light emitting diode having a structure in which a first electrode, an organic material layer, and a second electrode are sequentially stacked on a substrate, and the shape of the second electrode is the same as that of the organic material layer. It is characterized by.
- the shape of the second electrode and the shape of the organic material layer are the same, that the area of the second electrode is the same as the area of the organic material layer or has a difference within 10% of the area of the organic material layer.
- the pattern form of the second electrode and the pattern form of the organic material layer are the same.
- the shape of the second electrode has the same shape as that of the organic material layer as described above, the same mask can be used as the mask for forming the organic material layer and the mask for forming the second electrode.
- the area of the organic material layer means an area occupied by the organic material layer on the first electrode when forming the organic material layer on the first electrode, that is, an area when viewed from the upper surface side of the second electrode of the device. do.
- the area of the second electrode also means the area covering the first electrode and the organic material layer, that is, the area when viewed from the upper surface side of the second electrode of the device.
- the pattern form of the organic material layer is a shape in which the organic material layer is stacked on the first electrode when forming the organic material layer on the first electrode, that is, a pattern when viewed from the upper surface side of the second electrode of the device. It means form.
- the pattern form of the second electrode likewise means a pattern form in which the second electrode covers the first electrode and the organic material layer, that is, a pattern form when viewed from the upper surface side of the second electrode of the device.
- the area of the second electrode may be the same as the area of the organic material layer. May vary slightly. However, since the same mask is used, the difference in area may be within a range of 10%, preferably within 5%, more preferably within 3%.
- the pattern form of the second electrode and the organic material layer viewed from the upper side is the same, as described above. Since the area of the second electrode and the organic material layer may vary slightly due to a formation method or a process error, the ratio of the width and length of the pattern shape of the second electrode and the organic material layer may increase or decrease in proportion to each other. .
- the organic layer and the second electrode are formed in regions corresponding to each other as well as having the same shape, the same area, or different areas within a specific range.
- the organic light emitting device includes an external terminal of a second electrode provided to be insulated from the first electrode on the substrate, and electrically connects the second electrode and the external terminal of the second electrode. It may include a conductive pattern.
- the external terminal of the second electrode may be electrically connected to the second electrode to receive an external voltage.
- the second terminal and the external terminal of the second electrode may be electrically connected by including a conductive pattern electrically connecting the external terminal of the second electrode and the second electrode.
- an external voltage In order for the organic light emitting diode to emit light, an external voltage must be applied to the first electrode and the second electrode.
- An external voltage may be directly supplied to the first electrode, but the second electrode is electrically connected to a separate external terminal and then supplies an external voltage to the separate external terminal.
- the second electrode is configured to directly contact the external terminal of the second electrode.
- this configuration has a problem that the manufacturing process is complicated and expensive.
- the shape of the organic layer and the shape of the second electrode may be the same as described above, and the electrical connection between the second electrode and the external terminal of the second electrode may be compensated for by the conductive pattern as described above.
- the conductive pattern may have a structure penetrating the organic material layer from the upper surface of the external terminal of the second electrode to contact the second electrode or penetrate the second electrode.
- the organic light emitting device comprises a substrate; External terminals of a first electrode provided on the substrate and a second electrode provided to be insulated from the first electrode; An organic material layer provided to cover at least a portion of external terminals of the first electrode and the second electrode; A second electrode provided on the organic material layer and having the same shape as the organic material layer; And a conductive pattern having a structure penetrating the organic material layer from an upper surface of an external terminal of the second electrode to contact the second electrode or penetrating the second electrode.
- an insulating layer may be provided to insulate the first electrode located on the substrate from the external terminal of the second electrode.
- the insulating layer is not particularly limited as long as the insulating layer can insulate the external terminals of the first electrode and the second electrode.
- the organic material layer may be provided to cover the insulating layer.
- the insulating layer may include a general photoresist material; Polyimide; Polyacrylic; Silicon nitride; Silicon oxide; Aluminum oxide; Aluminum nitride; Alkali metals; Or at least one oxide selected from fluorides of alkaline earth metals.
- An organic light emitting diode is an organic light emitting diode having a structure in which a first electrode, an organic material layer, and a second electrode are sequentially stacked on a substrate, and an external terminal of the second electrode is formed on the substrate.
- An external terminal of the second electrode insulated from the first electrode is provided, and a conductive pattern for electrically connecting the second electrode and the external terminal of the second electrode is provided. Description of the external terminal and the conductive pattern of the second electrode is as described above.
- an insulating layer may be further provided on at least part of the outermost portion of the region where the organic material layer is in contact with the first electrode.
- the first electrode and the second electrode are less likely to be energized and shorted, but by providing an insulating layer, the possibility of the two electrodes being energized can be further lowered.
- the insulating layer may include a general photoresist material; Polyimide; Polyacrylic; Silicon nitride; Silicon oxide; Aluminum oxide; Aluminum nitride; Alkali metals; Or at least one oxide selected from fluorides of alkaline earth metals.
- the thickness of the insulation layer may be 10 nm to 10 ⁇ m, but is not limited thereto.
- FIG. 1 One specific example of a conventional organic light emitting device is shown in FIG. 1.
- a conventional organic light emitting device includes a first electrode, an organic material layer, and a second electrode provided on a substrate, and since the second electrode is in direct contact with an external terminal of the second electrode, an external voltage is applied. Will be supplied. That is, in the conventional organic light emitting device, in order for the second electrode and the external terminals of the second electrode to be electrically connected to each other, the external terminal surface of the second electrode must directly contact the second electrode. In other words, the organic material layer should not be deposited at a position corresponding to the external terminal of the second electrode. As a result, the size of the area on the plan view of the deposition pattern of the organic layer and the second electrode is inevitably different.
- FIG. 2 one specific example of the organic light emitting device according to the present invention is shown in FIG. 2.
- the organic light emitting diode according to the present invention includes a first electrode, an organic material layer, and a second electrode on a substrate, and the area of the pattern of the organic material layer and the second electrode is the same.
- the second electrode may be electrically connected to the external terminal of the second electrode through a conductive pattern formed on the external terminal of the second electrode. have.
- the conductive pattern may be formed before the organic material layer is formed on the upper surface of the external terminal of the second electrode.
- the conductive pattern may be formed in a region where a second electrode is to be formed on an upper surface of an external terminal of the second electrode before the organic material layer and the second electrode are formed.
- the conductive pattern When viewed from the upper surface side of the substrate, the conductive pattern may have various forms. As described above, the conductive pattern may be formed in the shape of one figure in the region to be formed, or may be distributed in the form of a plurality of independent or connected dots.
- the cross-sectional shape of the conductive pattern is not particularly limited, and may be in any form, such as triangular, square or amorphous.
- the side cross-sectional shape of the conductive pattern may be square or rectangular, but may have a rhombus, triangle or other modified shape.
- FIGS. 4 and 5 Various forms of the conductive pattern are shown in FIGS. 4 and 5.
- the maximum angle formed with the upper surface of the external terminal of the second electrode in the side cross-sectional shape of the conductive pattern is very important. It is preferable that the said maximum angle is 40 degree or more. Even after the organic material layer is formed, the organic material may be exposed without covering the side surfaces of the conductive pattern, and the conductive pattern may be electrically connected to the second electrode when the second electrode is formed later.
- One embodiment is shown in FIG. 6.
- the height of the conductive pattern is preferably at least twice the thickness of the organic material layer.
- the conductive pattern includes two or more patterns, it is preferable that the height of the conductive pattern is two times or more of the thickness of the organic material layer. It is preferable that the height of the said conductive pattern is 1 micrometer or more, for example.
- the conductive pattern may be formed by etching the conductive material layer after deposition or by using a printing method.
- a pattern deposition of a metal such as aluminum, chromium, copper, silver, gold, molybdenum, or a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO) using a mask may be performed. After depositing in the region, it may be partially etched to form a pattern. It is also possible to print by patterning with a conductive paste or ink containing silver, copper, carbon or the like.
- the organic light emitting device according to the present invention since the organic light emitting device according to the present invention has the same shape as the organic material layer and the second electrode, the organic light emitting device does not need to replace the mask in the process of forming the organic material layer and the second electrode. Can be increased. In addition, since the deposition equipment can be simplified when manufacturing the organic light emitting device, it is possible to obtain the effect of reducing the investment cost.
- the first electrode and the second electrode may be an anode and a cathode, respectively, may be a cathode and an anode, respectively.
- the materials of the first electrode and the second electrode may be those known in the art, and may be the same material.
- a metal, a transparent conductive oxide, a conductive polymer, a composite thereof, or a laminated structure thereof may be used as the material of the first electrode and the second electrode.
- the first electrode may be a transparent electrode
- the second electrode may be a metal electrode, but is not limited thereto.
- the first electrode may be formed by depositing ITO and the like
- the second electrode may be formed by depositing Al and the like.
- the first electrode may be formed of at least one selected from magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, platinum, gold, tungsten, tantalum, copper, silver, tin, and lead. Can be.
- the first electrode may be formed of a transparent conductive oxide.
- the transparent conductive oxide may be formed of indium (In), tin (Sn), zinc (Zn), gallium (Ga), cerium (Ce), cadmium (Cd), magnesium (Mg), beryllium (Be), and silver (Ag). ), Molybdenum (Mo), vanadium (V), copper (Cu), iridium (Ir), rhodium (Rh), ruthenium (Ru), tungsten (W), cobalt (Co), nickel (Ni), manganese ( Mn), at least one oxide selected from aluminum (Al), and lanthanum (La).
- the first electrode may be sputtered, e-beam evaporation, thermal evaporation, laser molecular beam epitaxy (L-MBE), and pulsed laser evaporation (Pulsed).
- Laser Vapor Deposition selected from any one of Physical Vapor Deposition (PVD); Thermal Chemical Vapor Deposition, Plasma-Enhanced Chemical Vapor Deposition (PECVD), Light Chemical Vapor Deposition, Laser Chemical Vapor Deposition, Metal- Chemical Vapor Deposition selected from Organic-Chemical Vapor Deposition (MOCVD) and Hydride Vapor Phase Epitaxy (HVPE);
- the layer may be formed using atomic layer deposition (ALD).
- the second electrode material may be a transparent conductive oxide.
- the transparent conductive oxide may be indium (In), tin (Sn), zinc (Zn), gallium (Ga), cerium (Ce), cadmium (Cd), magnesium (Mg), beryllium (Be), silver (Ag), Molybdenum (Mo), Vanadium (V), Copper (Cu), Iridium (Ir), Rhodium (Rh), Ruthenium (Ru), Tungsten (W), Cobalt (Co), Nickel (Ni), Manganese (Mn) , At least one oxide selected from aluminum (Al) and lanthanum (La). Among these, it is preferable that the film is formed of indium tin oxide (ITO) or indium zinc oxide (IZO).
- ITO indium tin oxide
- IZO indium zinc oxide
- the second electrode material may be at least one selected from magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, platinum, gold, tungsten, tantalum, copper tin, and lead.
- the second electrode may be formed by sputtering, e-beam evaporation, thermal evaporation, laser molecular beam epitaxy (L-MBE), and pulsed laser evaporation ( Pulsed Laser Deposition (PLD) selected from any one of the Physical Vapor Deposition (PVD); Thermal Chemical Vapor Deposition, Plasma-Enhanced Chemical Vapor Deposition (PECVD), Light Chemical Vapor Deposition, Laser Chemical Vapor Deposition, Metal- Chemical Vapor Deposition selected from Organic-Chemical Vapor Deposition (MOCVD) and Hydride Vapor Phase Epitaxy (HVPE); Or it may be formed using an atomic layer deposition method (ALD).
- PVD Physical Vapor Deposition
- PECVD Plasma-Enhanced Chemical Vapor Deposition
- MOCVD Organic-Chemical Vapor Deposition
- HVPE Hydride Vapor Phase Epitaxy
- ALD atomic layer deposition method
- the thickness of the second electrode may be 50 nm to 5 ⁇ m, but is not limited thereto.
- the external terminal of the second electrode may be formed of a conductive material, and may be formed of the same material as the first electrode or the second electrode.
- a metal auxiliary electrode may be formed on the first electrode to lower the sheet resistance value.
- the metal auxiliary electrode can be formed using materials and methods known in the art. For example, Cr, Mo, Cu, Al, etc. can be used and can be formed by the photolithography method.
- the organic light emitting device uses a metal vapor deposition (PVD) method such as sputtering or e-beam evaporation, and has a metal oxide or a metal oxide or an alloy thereof on a substrate. It can be prepared by depositing an anode to form an anode, an organic material layer formed thereon, and then depositing a material that can be used as a cathode thereon.
- PVD metal vapor deposition
- an organic light emitting device may be manufactured by sequentially depositing a cathode material, an organic material layer, and an anode material on a substrate.
- the organic material layer of the organic light emitting device according to the present invention is a solvent process such as spin coating, dip coating, doctor blading, screen printing, inkjet printing or thermal transfer method using various polymer materials. Thereby making it possible to produce fewer layers.
- the organic material layer according to the present invention may include a light emitting layer, and may have a laminated structure including at least one selected from a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer.
- a material capable of forming the hole injection layer is preferably a material having a large work function so as to facilitate hole injection into the organic material layer.
- hole injection materials include metals such as vanadium, chromium, copper, zinc, gold or alloys thereof; Metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), indium zinc oxide (IZO); A combination of a metal and an oxide such as ZnO: Al or SnO 2 : Sb; Conductive polymers such as poly (3-methylthiophene), poly [3,4- (ethylene-1,2-dioxy) thiophene] (PEDT), polypyrrole and polyaniline, and the like, but are not limited thereto.
- the material capable of forming the electron injection layer is preferably a material having a small work function to facilitate electron injection into the organic material layer.
- the electron injection material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead or alloys thereof; Multilayer structure materials such as LiF / Al or LiO 2 / Al, and the like, and the same material as the hole injection electrode material may be used, but is not limited thereto.
- the light emitting layer may be formed of a material capable of emitting light in the visible region by transporting and combining holes and electrons from the hole transporting layer and the electron transporting layer, respectively.
- a material having good quantum efficiency with respect to is preferable.
- Specific examples thereof include 8-hydroxyquinoline aluminum complex (Alq 3 ); Carbazole series compounds; Dimerized styryl compounds; BAlq; 10-hydroxybenzoquinoline-metal compound; Benzoxazole, benzthiazole and benzimidazole series compounds; Poly (p-phenylenevinylene) (PPV) -based polymers; Spiro compounds; Polyfluorene, rubrene; Phosphorescent host CBP [[4,4'-bis (9-carbazolyl) biphenyl]; Etc., but is not limited thereto.
- the light emitting material may further include a phosphorescent dopant or a fluorescent dopant to improve fluorescence or phosphorescent properties.
- a phosphorescent dopant include Ir (ppy) 3 (tris (2-phenylpyridine) iridium (III)) or F 2 Irpic (bis [2- (4,6-di-fluorophenyl) pyridinato-N, C-2 'iridium picolinate', etc.
- Fluorescent dopants can be used as known in the art.
- a material capable of forming the electron transport layer is a material capable of injecting electrons well from the electron injection layer and transferring the electrons to the light emitting layer.
- Specific examples include Al complexes of 8-hydroxyquinoline; Complexes including Alq 3 ; Organic radical compounds; Hydroxyflavone-metal complexes and the like, but are not limited thereto.
- the thickness of the organic material layer may be 100 nm to 5 ⁇ m, but is not limited thereto.
- the organic material layer may be formed to cover a part of the insulating layer on the first electrode, but is not limited thereto.
- the substrate a glass substrate; Plastic substrates; Plastic film; Metal substrates; Or a metal film.
- the thickness of the substrate may be 10 ⁇ m to 10 mm, and the lower electrode thickness may be 10 nm to 1 ⁇ m, but is not limited thereto.
- the organic light emitting device according to the present invention has the same area of the pattern of the organic material layer and the second electrode, it is not necessary to replace the mask during the deposition process of each of the organic material layer and the second electrode, thereby organic light emitting
- the productivity of the device can be increased.
- the deposition equipment can be simplified when manufacturing the organic light emitting device, it is possible to obtain the effect of reducing the investment cost.
- the organic light emitting device according to the present invention may be used as a display element in various display devices, may be used as an illumination device, but may be more preferably applied for lighting.
- Another embodiment of the present invention includes forming a first electrode on a substrate; Forming an organic material layer on the first electrode by using a mask; And forming a second electrode on the organic material layer, wherein the organic material layer and the second electrode are formed with the same mask.
- the mask may be formed of a material selected from stainless steel, invar-based metal, titanium, copper copper plate, and plastic.
- a PET film may be exemplified, but is not limited thereto.
- the thickness of the mask may be 5 micrometers to 5 millimeters, but is not limited thereto.
- the method of manufacturing an organic light emitting device according to the present invention may further include cleaning the mask after using the mask to form the organic material layer and the second electrode.
- the mask may be cleaned after successively using the organic material layer forming step and the second electrode forming step.
- the mask for the organic layer forming step and the mask for the second electrode forming step are separately provided, it is difficult to clean the mask for the second electrode forming step, and thus the mask replacement cost is increased. There is an increasing disadvantage.
- the method of manufacturing an organic light emitting diode according to the present invention may further include forming an external terminal of the second electrode on the substrate.
- the external terminal of the second electrode may be formed at the same time or the same process as the first electrode.
- the method of manufacturing an organic light emitting device may further include forming an insulating layer.
- the insulating layer may be an insulating layer for insulating the external terminals of the first electrode and the second electrode.
- the insulating layer may be formed on at least a portion of the outermost part of the region in which the organic material layer is to be formed in order to prevent the first electrode and the second electrode from shorting. Therefore, the forming of the insulating layer may be a step of forming an insulating layer between at least a portion of the outermost part of the region between the first electrode and the external terminal of the second electrode or where the organic layer contacts the first electrode. have.
- the method of manufacturing an organic light emitting diode according to the present invention may further include forming a conductive pattern on an external terminal of the second electrode.
- the method may further include forming a conductive pattern on at least a portion of an upper surface of the external terminal of the second electrode where the organic material layer and the second electrode are formed before forming the organic material layer and the second electrode. Can be.
- the second electrode is formed as the mask for the organic layer forming step without using the mask for the second electrode forming step separately, thereby replacing the two kinds of masks. Replacement lines can be eliminated and existing mask loading can be eliminated, thus providing simplification of the equipment.
- the method of manufacturing the organic material layer and the second electrode using a single mask can be performed as the additional module is required, Therefore, the manufacturing apparatus of the organic light emitting element can be simplified.
- the mask continuously used in the forming of the organic material layer and the forming of the second electrode is easy to clean, the mask can be used for a long time and the replacement cost of the mask can be reduced.
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Abstract
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Claims (24)
- 기판상에 제1 전극, 유기물층 및 제2 전극이 순차적으로 적층된 구조를 갖는 유기 발광 소자에 있어서, 상기 제2 전극의 형상과 상기 유기물층의 형상이 동일한 것을 특징으로 하는 유기 발광 소자.
- 청구항 1에 있어서, 상기 제2 전극의 면적이 상기 유기물층의 면적과 동일하거나, 상기 유기물층의 면적에 대하여 10% 이내의 차이를 갖는 것을 특징으로 하는 유기 발광 소자.
- 청구항 1에 있어서, 상기 제2 전극의 면적이 상기 유기물층의 면적과 동일한 것인 유기 발광 소자.
- 청구항 1에 있어서, 상기 기판상에 제1 전극과 절연되어 구비된 제2 전극의 외부 단자를 더 포함하는 것인 유기 발광 소자.
- 청구항 4에 있어서, 상기 제2 전극과 상기 제2 전극의 외부 단자를 전기적으로 연결하는 도전성 패턴을 포함하는 것인 유기 발광 소자.
- 청구항 5에 있어서, 상기 도전성 패턴은 상기 제2 전극의 외부 단자의 상면으로부터 상기 유기물층을 관통하여 상기 제2 전극에 접하거나, 제2 전극을 관통하는 구조를 갖는 것인 유기 발광 소자.
- 청구항 5에 있어서, 상기 도전성 패턴의 측단면 형상이 상기 제2 전극 외부 단자의 상면과 이루는 최대 각도가 40도 이상인 것인 유기 발광 소자.
- 청구항 5에 있어서, 상기 도전성 패턴의 높이는 상기 유기물층의 두께의 2배 이상인 것인 유기 발광 소자.
- 청구항 4에 있어서, 상기 제1 전극과 상기 제2 전극의 외부 단자와의 사이에 절연층이 구비된 것인 유기 발광 소자.
- 청구항 1에 있어서, 상기 유기물층이 상기 제1 전극과 접하는 영역 중 최외곽 부분의 적어도 일부에 절연층이 추가로 구비된 것인 유기 발광 소자.
- 기판상에 제1 전극, 유기물층 및 제2 전극이 순차적으로 적층된 구조를 갖는 유기 발광 소자에 있어서, 제2 전극의 외부 단자가 상기 기판상에 제1 전극과 절연되어 구비되고, 상기 제2 전극과 상기 제2 전극의 외부 단자를 전기적으로 연결하는 도전성 패턴이 구비된 것을 특징으로 하는 유기 발광 소자.
- 청구항 11에 있어서, 상기 제2전극의 형상과 상기 유기물층의 형상이 동일한 것을 특징으로 하는 유기 발광 소자.
- 청구항 11에 있어서, 상기 제2 전극의 면적이 상기 유기물층의 면적과 동일하거나, 상기 유기물층의 면적에 대하여 10% 이내의 차이를 갖는 것을 특징으로 하는 유기 발광 소자.
- 청구항 11에 있어서, 상기 도전성 패턴은 상기 제2 전극의 외부 단자의 상면으로부터 상기 유기물층을 관통하여 상기 제2 전극에 접하거나, 제2 전극을 관통하는 구조를 갖는 것인 유기 발광 소자.
- 청구항 11에 있어서, 상기 도전성 패턴의 측단면 형상이 상기 제2 전극 외부 단자의 상면과 이루는 최대 각도가 40도 이상인 것인 유기 발광 소자.
- 청구항 11에 있어서, 상기 도전성 패턴의 높이는 상기 유기물층의 두께의 2배 이상인 것인 유기 발광 소자.
- 청구항 11에 있어서, 상기 제1 전극과 상기 제2 전극의 외부 단자와의 사이에 절연층이 구비된 것인 유기 발광 소자.
- 청구항 11에 있어서, 상기 유기물층이 상기 제1 전극과 접하는 영역 중 최외곽 부분의 적어도 일부에 절연층이 추가로 구비된 것인 유기 발광 소자.
- 청구항 1 내지 청구항 18 중 어느 한 항에 있어서, 상기 유기 발광 소자는 조명용인 것을 특징으로 하는 유기 발광 소자.
- 기판 위에 제1 전극을 형성하는 단계; 상기 제1 전극 상에 마스크를 이용하여 유기물층을 형성하는 단계; 및 상기 유기물층 상에 제2 전극을 형성하는 단계를 포함하고, 상기 유기물층과 상기 제2 전극은 동일한 마스크로 형성하는 것을 특징으로 하는 청구항 1 내지 18 중 어느 하나의 항에 따른 유기 발광 소자의 제조방법.
- 청구항 20에 있어서, 상기 유기물층 및 상기 제2 전극을 형성하는데 사용한 후에, 상기 마스크를 세정하는 단계를 더 포함하는 유기 발광 소자의 제조방법.
- 청구항 20에 있어서, 상기 기판 상에 제2 전극의 외부 단자를 형성하는 단계를 더 포함하는 유기 발광 소자의 제조방법.
- 청구항 20에 있어서, 상기 제1 전극과 상기 제2 전극의 외부 단자 사이 또는 상기 유기물층이 상기 제1 전극과 접하는 영역 중 최외곽 부분의 적어도 일부에 절연층을 형성하는 단계를 더 포함하는 유기 발광 소자의 제조방법.
- 청구항 22에 있어서, 상기 유기물층 및 상기 제2 전극 형성 전에, 상기 제2 전극의 외부 단자 상면 중 상기 유기물층 및 상기 제2 전극이 형성되는 영역 중 적어도 일부에 도전성 패턴을 형성하는 단계를 더 포함하는 유기 발광 소자의 제조방법.
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| JP2013524048A JP2013533602A (ja) | 2010-08-13 | 2011-08-12 | 有機発光素子およびその製造方法 |
| CN2011800494932A CN103155204A (zh) | 2010-08-13 | 2011-08-12 | 有机发光元件及其制备方法 |
| EP11816640.4A EP2605300B1 (en) | 2010-08-13 | 2011-08-12 | Organic light-emitting element and a production method therefor |
| US13/816,468 US9666827B2 (en) | 2010-08-13 | 2011-08-12 | Organic light-emitting element including a conductive pattern which passes through an organic material layer to connect to an external terminal of a second electrode |
| US15/492,443 US10153454B2 (en) | 2010-08-13 | 2017-04-20 | Organic light-emitting element and production method thereof |
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| US15/492,443 Division US10153454B2 (en) | 2010-08-13 | 2017-04-20 | Organic light-emitting element and production method thereof |
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| EP (1) | EP2605300B1 (ko) |
| JP (1) | JP2013533602A (ko) |
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| WO (1) | WO2012021024A2 (ko) |
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| JP2016506013A (ja) * | 2012-11-19 | 2016-02-25 | オスラム オーエルイーディー ゲゼルシャフト ミット ベシュレンクテル ハフツングOSRAM OLED GmbH | 電子デバイスの表面領域上に層を製造する方法 |
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| KR101925574B1 (ko) * | 2014-05-15 | 2018-12-05 | 엘지디스플레이 주식회사 | 유기발광소자 |
| JP2017182892A (ja) | 2016-03-28 | 2017-10-05 | セイコーエプソン株式会社 | 発光素子、発光装置、及び電子機器 |
| CN116583131A (zh) * | 2017-04-26 | 2023-08-11 | Oti照明公司 | 用于图案化表面上覆层的方法和包括图案化覆层的装置 |
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| JP2016506013A (ja) * | 2012-11-19 | 2016-02-25 | オスラム オーエルイーディー ゲゼルシャフト ミット ベシュレンクテル ハフツングOSRAM OLED GmbH | 電子デバイスの表面領域上に層を製造する方法 |
| CN105210206A (zh) * | 2013-05-16 | 2015-12-30 | 株式会社Lg化学 | 有机发光器件及其制造方法 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20130140550A1 (en) | 2013-06-06 |
| CN103155204A (zh) | 2013-06-12 |
| EP2605300B1 (en) | 2019-07-03 |
| WO2012021024A3 (ko) | 2012-04-19 |
| EP2605300A2 (en) | 2013-06-19 |
| JP2013533602A (ja) | 2013-08-22 |
| US10153454B2 (en) | 2018-12-11 |
| EP2605300A4 (en) | 2014-07-23 |
| US20170222175A1 (en) | 2017-08-03 |
| US9666827B2 (en) | 2017-05-30 |
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