TW201002136A - Manufacturing method of organic electroluminescence element, organic electroluminescence element and display device - Google Patents

Abstract

This invention relates to a manufacturing method of organic electroluminescence elements, which are manufactured by being laminated at least on a substrate a cathode, an anode and an organic luminous layer that is located between the cathode and the anode. The manufacturing method is characterized in including a step for forming a separation wall, which divides a substrate having one electrode into pixel areas of a shape having corners; and a step for forming an organic luminous layer, which is formed by means of a relief printing method to coat an organic luminous ink containing an organic luminous material and a solvent on the separation wall disposed by enclosing pixel areas. By the method of this invention, film defects do not occur and organic luminous layers of organic electroluminescence elements are formed, such that the opening ratio of pixel electrodes is increased.

Description

201002136 D 1 uu^pil.doc VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to an organic electroluminescent element

The Electro-Luminescence Element is a display device including the above-described organic EL element, which is manufactured by the method of using the Uruguic v Urganic. EL element [Prior Art] & It is known that the basic junction (hetero or cathode) of the organic EL element, the second electrode (cathode or anode: the second electrode J of the electrode - organic light-emitting layer. The current flows between the electrodes, the plate, the display device for the organic EL device using the tUf, the display surface is formed in the pattern of the Hd, and the electrode is formed into a fine pattern 'and the light-wall is 11 by the above-mentioned On the pattern (Photolithography), the surface is surrounded by a plurality of partition walls, and the drain is exposed, and the region becomes a pixel region. In each pixel region, an organic light-emitting layer having a thickness of about 100 nm is formed, and rain is performed. There is a method of vacuum evapotranium (vacuum evaPorati〇n) method, which is used to form a layer (film formation) with high precision and high efficiency. Therefore, 4 201002136 3iUU2pit.doc wet coating method is used. In the wet coating method, 'the organic luminescent material is dissolved in the dissolution* to be coated; ^, and the miscellaneous coating surface is selected to be disposed in the above pixel region. The selective coating towel can be used by the relief printing method = inkjet Printing (inkjetprinting) method, etc. Printing method (for example, & document 1). Patent Document 1: Japanese Patent Laid-Open No. Hei. No. 2006-286243, the entire disclosure of which is incorporated herein by reference. The method can efficiently coat the organic EL element, but it has been found by the inventors of the present invention that the following problems are still to be solved. 士:: : The purpose is to prevent electricity flow between different pixels: and gas insulation (Hereinafter, it may be referred to as "insulating property"; ^The coating liquid can be held in each pixel region, and the organic light-emitting layer can be applied by coating. In order to ensure the pixel region between pixels, it is preferable to make the partition wall The width dimension = the opposite requirement of the above, the partition wall is designed and formed into two; ^ and divided into the pixel area as large as possible. If the shape of the self: 离: from the literature 1 but the partition wall but the resulting Ideally, the shape of the domain is not described in detail, and the corner of the corner is relatively flat. The pixel area is formed into a shape of a pixel area that is not surrounded. The reason is that the shape is a corner by the partition wall. In the case, when the ink is applied to 201002136 j I UU2piI.doc, the organic light-emitting ink may not be able to reach ft卩, resulting in an uncoated region remaining in the corner portion. 未 ΐ 残留 残留 残留 ΐ ΐ ΐ ΐ ΐ ΐ In the pixel region, there is a portion that is not covered by the organic light-emitting layer, which may cause poor light emission in the pixel region. Therefore, in the conventional organic EL device, the pixel region of the pixel region is separated from the wall. As a result, the actually designed pixel area is smaller than the occupied area of the ideal pixel area, and the area of the equal phase is found to be the area of the corner portion which is reduced by the flat inner wall surface. The above problems are particularly apparent when using an inkjet printing method as a printing method. For example, in an active matrix type organic EL device, it is desirable to use a thin film transistor (Thin Film TFT) device as shown in FIG. Wiring (not shown) is covered by the insulating partition wall 1, and a region excluding the insulating spacers is formed as a pixel. On the bottom surface of the pixel region 2 partitioned by the partition wall 1, the pole 3' is exposed to constitute the pixel electrode 3a. The ratio of the pixel area to the arrangement of the organic bismuth parts is preferably as high as possible. = The higher the opening ratio, the larger the illuminance per unit area, and as a result, the amount of luminescence of the entire device having a plurality of organic EL elements is increased. The shape of the pixel area 2 divided by the partition wall 1 is larger than the largest possible area except for TFT reading. According to the ^ overlay, the pixel area 2 is as shown in Fig. 1, and most of the simple shapes, such as a soap setting or an ellipse, are rectangular shapes.

201002136 31002pif.doc becomes a special shape that connects a small area rectangle. For example, the special shape of 2 may have a plurality of angular regions as a whole. However, for the same reason as described above, for example, ^ = pixel regions 2 of the plurality of corners c are printed organic: by: ' The plurality of corner portions c of the prime region 2 remain as the portion where the ink is not applied. Therefore, if the corner portion is chamfered to be flattened, the rate is lowered, but previously even the active matrix type organic EL element The shape of the pixel region divided by the wall is usually also formed into a shape having no corners of the inner wall surface. </ RTI> The present invention has been made in view of the above-described prior art, and provides a method for manufacturing an organic element capable of increasing an aperture ratio without generating an uncoated portion, and by the method of manufacturing The obtained organic tL element and display device. In order to solve the above problems, the inventors have repeatedly conducted intensive experiments and researched ninth, and sigma, and it is generally difficult to apply an organic luminescent ink to a pixel region having corners without generating an uncoated portion. However, if a co-printing method is used to coat an organic light-emitting ink containing an organic light-emitting material and a solvent from among a plurality of coatings, the pixel region having the corner portion can be coated with organic light-emitting without generating an uncoated portion. Ink. In order to solve the above problems, the present invention provides a method for producing an organic electroluminescence device, an organic electroluminescence device, and a display device having the following configuration. [1] A method for producing an organic electroluminescence device, wherein the organic electroluminescence is formed by stacking at least a cathode, an anode, and an organic light-emitting layer on a substrate, and the organic electroluminescence = η The method includes the following steps: a partition wall forming step, on the substrate of the pole, the isolation of the partitioned wall is divided into a shape having a corner shape ===, which surrounds the pixel region, and is described in the above In the production method of the organic electroluminescence device, the organic light-emitting ink uses a solvent having a gas point temperature of equal to or higher than °C, and the width of the convex surface of the plate made in the relief printing is set to be smaller than the pixel. The width dimension of the area. [3] The method for producing an organic electroluminescence device according to [2] above, wherein the width of the convex (four) width of the plate used for the relief printing roll is not reduced to ~%% of the width of the pixel region. . [4] The method for producing an organic electroluminescence device according to the above [1], wherein a boiling point temperature of the organic light-emitting ink is less than 2 (nine). The solvent of C is set to be larger than the width of the above-mentioned pixel region by the convex surface of the plate used in the above-described relief printing. [5] The method for producing an organic electroluminescence device according to the above [4], wherein the width dimension h of the convex surface of the plate used in the relief printing is set to be larger than the width dimension L2 of the pixel region and smaller than丨 (the above width dimension 1^) + (the width of the above partition wall is B 2) /2}. [6] The method for producing an organic electroluminescence device according to any one of the above [1], wherein the convex surface of the plate used in the relief printing is sequentially pressed onto the printed matter by 201002136 310U2pif.doc. [7] The method for producing an organic electroluminescence device according to any one of the above [1] to [6] wherein the organic light-emitting layer forming step is more A plurality of inks corresponding to the color are selectively applied to the predetermined partition walls as the organic light-emitting inks to form at least an organic light-emitting layer constituting red, green, and quinone. [1] Light-emitting element, which is using the above [1]~

Obtained by any of the manufacturing methods described. The light element=the seed ageing device, which comprises the effect of the above-mentioned organic electroluminescence L praising] According to the manufacturing method of the present invention, for example, the apricot ratio is coated with a pixel region having a corner shape; According to the present invention, it is explained that the light-emitting surface is formed by the t == product, and then the structure of the organic EL element is described in more detail. In addition, the manufacturing method ratio of the EL element is sometimes different from the actual one. In the figure of the figure, the elements of the electrode 9 201002136 jwuzpn.doc are also present on the organic EL element of each member, and the related descriptions and drawings are omitted. The same is true in the description. In the manufacturing substrate of the organic EL device of the present invention, the organic electroluminescent device, the device, and the method for forming an organic light-emitting layer between the cathode and the anode are not laminated. The method comprises the steps of: forming an organic light-emitting layer: the BL step is formed in a partition wall provided by one side of the thickness direction of the substrate, and the method is provided by the partition wall. The area defined by the inner peripheral surface. The pixel area (substrate) is only required to form an electrode and form a material. For example, a film can be formed, a stone substrate can be formed, and the material f can be laminated. Use a low-permeability water for plastics, polymer films, etc.; 2 or 2, which can be used as a substrate, or a commercially available substrate, or according to a known method: (electrode and luminescent layer) The EL element is at least a laminated anode. The cathode and the anode are formed in the anode. At least the anode and the cathode (four): two =::. In the organic EL element of the light-emitting layer, a plurality of (4) may be provided between the anode and the anode. 10 201002136 31002 pif.doc a layer other than the light-emitting layer. The layer disposed between the negative layers is referred to as the cathode side inter layer, and the layer between the light emitting layers and the light emitting layer is referred to as the anode side intermediate layer. The anode side intermediate layer, which can be exemplified by the hole 3, the electron transport layer, the electron blocking layer, and the electron blocking layer, has the effect of improving the hole injection efficiency from the cathode or the above-mentioned hole transmission. The layer refers to a power hole hole injection layer or a hole transmission layer having a hole injection for improving a layer (hole transport layer) which is closer to the 4:3 pole of the hole injection, and has a SI which prevents the transfer of the second pass. The layer is called an electron blocking layer. When it has a component, the root effect, the layer 'electron works from the cathode electron injection efficiency layer or the layer closer to the cathode _ = 4 from the electron injection energy layer. In addition, the layer) electron injection The function of the power hole, when the second layer will block the transmission to prevent the transmission of electricity _Wei time, for example, can only make curr== pieces, the current _ reduction is categorized: the layers between the cathode and the cathode The layered structure can be used to set the electrophoretic transport layer between the % pole and the first layer. Cheng Yuyin 201002136 31002pif.doc A structure in which an electron transport layer is provided between the electrode and the light-emitting layer, an electron transport layer is provided between the cathode and the light-emitting reed, and an electro-transmission layer is provided between the anode and the light-emitting layer. For example, specifically, the following products a) to d) a) anode/light emitting layer/cathode b) anode/hole transport layer/light emitting layer/cathode c) anode/light emitting layer/electron transport layer/cathode d Anode/hole transport layer/light-emitting layer/electron transport layer/cathode (herein '/ indicates that each layer is adjacent to the ground layer. The same applies hereinafter.) In the above configuration, as described above, the light-emitting layer means having a layer of electricity The hole transport layer has a layer having a function of transmitting a hole, and a layer means a layer having a function of transmitting electrons. Further, the electron transport layer and the hole transport layer are collectively referred to as a charge transport layer. The light layer, the electric layer, and the electron transport layer may be used independently of two or more layers, respectively. Further, in the charge transport layer provided adjacent to the electrode, a charge transport layer having a function of improving the charge injection efficiency from the electrode and having a function of reducing the drive of the element is sometimes referred to as a charge injection layer ( Electron injection layer). m, in addition, in order to improve adhesion to the electrode or to improve the electrode from the electrode, the charge injection layer or the film 4 may be provided adjacent to the electrode at an insulating layer of 2 nm, or may be used to improve the density of the interface. The anti-money combination is inserted into the buffer layer of the pregnant: Tao at the interface of the charge transport layer or the light-emitting layer. Regarding the thickness of the layer and each layer, the luminous efficiency and the component life can be considered. 201002136 3 lUU2pif.doc. There is = a charge injection layer (electron injection layer, hole injection layer) is set as "70 pieces", and a charge injection device EL TL is disposed adjacent to the cathode, and is adjacent to the anode. An electric organic EL element is placed. You 丨 ‘the structure of the ship’s 屯^ king. ^ Specifically, the following e): p), pole/charge injection layer/light-emitting layer/cathode f)=pole/light-emitting layer/charge injection layer/cathode anode/charge injection layer/light-emitting layer/ Charge injection layer/cathode, pole/charge>main entry layer/hole transport layer/light-emitting layer/cathode 1, pole/hole transport layer/light-emitting layer/charge injection layer/cathode cathode J anode/electrical injection layer / hole transmission layer / luminescent layer / charge injection layer / t / charge injection layer / luminescent layer / charge transport layer / cathode l) secret / luminescent layer / electron transport layer / charge injection layer / cathode

L m) shouting • injection tree (10) electron transport peach charge injection layer / cathode cathode η) anode, He > main entry layer / hole transfer layer / luminescent layer, charge transport layer / 〇) anode / hole transport layer / Light-emitting layer/electron transport layer/charge injection layer/charge electrode injection hole-transmission layer/electron transport layer/(anode) 13 201002136 Jiuuzpif.doc Conductivity can be used in the above anode, for example, transparent electrode or translucent electrode Higher metal oxide, metal sulfide or metal film, suitable

A film having a high transmittance can be used, and it can be used depending on the organic layer to be used; Specifically, for example, indium oxide, oxidized: tin oxide, indium tin oxide (Indium Tin 〇xide: IT 〇), indium zinc oxide (Indium Zinc Oxide: ΙΖ〇), gold, Thin films formed of surface, silver, and copper, among which, tin, tin, and tin are preferred. Hey. , gas ^ The anode can be used, for example, a P〇lyaniline derivative, a polythiophene: or a derivative thereof, a membrane. In addition, a mixed j-binding film containing a material selected from the following materials, a metal oxide, a metal sulfide, a gold, a rice tube (c-) may also be used. A group of carbon materials such as nano-tubes or more or more than one species. Further, at least r, a material capable of reflecting light may be used in the anode. Preferably, the work function is greater than or equal to 3. ~ Metal, :: material is more sulfide. Examples of the method for producing the U-shaped object and the metal anode include a vacuum sputtering method, an ion electric forging method, a dream method, a money method, and the like. Plating The film thickness of the anode can be considered in consideration of light permeability. And the choice 'for example, 5 nm ~! 0, preferably, as appropriate, is 20 nm to 500 nm DA m, and 14

201002136 31UU2pxf.doc (Anode-side intermediate layer) As described above, the anode-side intermediate layer such as the hole injection layer or the hole transport layer of the anode and the light-emitting layer described above. The layer (hole injection layer) H may be disposed between the anode and the hole transport layer = the light layer as described above. The material for forming the electrowetting injecting layer can be used as a material, and is not particularly limited. For example, phenyl hydrazine (wide:, (four) system, starburst amine (--Ο, phthai〇cyanine, hydraz〇ne derivative, carbazole (c-e) a derivative, a triazole derivative, a mdazole derivative, an oxadiazole derivative having an amine group: oxygen, oxygen, tungsten oxide, cerium oxide, oxygen extraction, An oxide such as alumina, amorphous carbon (am〇rph〇us carb〇n), polyaniline, polythiophene derivative, etc. Further, the thickness of the above-mentioned hole injection layer is preferably about 5 nm to 3 〇〇 nm. When the thickness is less than 5 nm, it tends to be difficult to manufacture. On the other hand, when the thickness exceeds 3 〇〇 nm, the driving voltage and the voltage applied to the hole injection layer tend to increase. Transport layer) The constituent material of the hole transport layer is not particularly limited, and examples thereof include: N,N'-diphenyl-N,N'-bis(3-methylphenyl)4,4'-diamino group Biphenyl (N,N'-diphenyl-N,N,-di(3-methylphenyl)4,4,-diaminobiphenyl,TPD), 4W-bis[N-(l-naphthyl)-N-phenylamine (4,4'-bis[N-(l-naphthyl)-N-phenylamino ]biphenyl ^ NPB ) 15 201002136 l uuzpn'.doc and other aromatic bribery organisms, poly(10) decyl derivatives, poly-Wei or its derivatives, polyoxane derivatives with aromatic amines in the side chain or main chain , pyrazoline derivative, arylamine derivative, 1 diphenylethylene (stiibene &gt; derivative, triphenyl diamine (tnphenylchamine) derivative, polyaniline or its derivative, polythiophene Or a derivative thereof, a polyarylamine or a derivative thereof, polypyrrole (p〇1rr〇ie) or a derivative thereof, polyparaphenylenevinylene or a derivative thereof, or poly(2,5-thiopheneacetylene) (poly(2) , 5-thienylenevinylene)) or a derivative thereof, etc. Among the above materials, the hole transporting material used in the hole transport layer is preferably polyvinyl carbazole or a derivative thereof, polydecane or a derivative thereof, and a side chain. Or a polyoxyalkylene derivative having an aromatic amine compound group in the main chain, polyphenylamine or a derivative thereof, polythiophene or a derivative thereof, polyarylamine or polyparaphenylenevinylene or a derivative thereof, or a polymer hole transport material such as poly(2,5-thiopheneacetylene) or a derivative thereof, more preferably a polymer Enoxazol or a derivative thereof: polywei or a derivative thereof, a touch or a wire; a polyoxylated derivative having a steroid amine. When a low molecular hole transport material is used, a good ruthenium is dispersed in a high Used in molecular binders. The thickness of the hole is not _, the design of the root can be changed, and it is better to have one side ~ _ side. If the thickness is less than the lower limit value, it is difficult to manufacture, or the hole is sufficient to obtain a sufficient hole transmission, effect, etc., and if the thickness exceeds the above upper limit value, there is a driving voltage and is applied to the hole transmission. The tendency of the voltage of the layer to increase. Therefore, the thickness of the transmission layer of the hole is as described above, preferably the leg ~ 诵 聪, and the better is 2 brain ~ 50. The legs are better 5 sides ~ legs. 16 201002136 31UU2pif.doc (Organic light-emitting layer) The organic light-emitting layer usually contains mainly fluorescent or dish light (low molecular compound and high molecular compound). In addition, it may contain more (d〇P ant) materials. The shape of the organic light-emitting layer which can be used in the present invention is, for example, the following pigment-based material, metal-based compound material, polymer-based material, and dopant material.

Examples of the pigment-based material include a cyclopentamine derivative, a tetraphenylbutadiene derivative compound, a triphenylamine derivative, and an oxadiazole derivative. Pyrazoloquinoline derivative, distyryl benzene derivative, distyryl aromatic hydrocarbon Uistyrylarylene derivative, quinacrid〇ne derivative, couma bean A coumarin derivative, a pyrrole derivative, a thiophene ring compound, a pyridinering compound, a perinone derivative, a perylene derivative, and a polythiophene ( An oligothiophene) derivative, an oxadiazole dimer, a pyrazolium dimer, or the like. The metal complex-based material may, for example, be a metal complex having luminescence from a triplet excited state such as a ruthenium complex or a platinum complex, which is agglomerated by aurniquinolinol. The substance, the basic 啥 铍 铍 (benzoquinolinol beryllium) complex, benzo. a metal complex such as a zinc oxazole complex, a benzothiazole zinc complex, an azo hydrazinium zinc complex, a porphyrin zinc complex, a ruthenium complex, etc., which are The central metal of the compound is Al, Zn, Be, etc. or Tb, 17 201002136 31 UU2pif.doc

Eu, Dy and other rare earth metals, and the ligand has σ oxadipine, thiadiazole, phenyl pyridine, phenyl benzo imidazole, 喧Lin (qUin〇line) structure and so on. Examples of the polymer material include polyparaphenylene acetylene derivatives, polythiophene derivatives, polyparaphenylene derivatives, polydecane derivatives, polyacetylene derivatives, polyfluorene derivatives, and polyvinylcarbazole. A derivative, a pigment or a metal complex-based luminescent material, or the like. a material which emits blue light in the above-mentioned organic light-emitting layer forming material, for example, a phenanthrene-based aromatic derivative, a ruthenium derivative, and the like, a polyethylene derivative, Polyparaphenylene derivative, polyfluorene derivative ^ Temple. The t is preferably a polyelectron ray, a polyparaphenylene derivative or a polyfluorene derivative which is a polymer material. Raw material, Cl Bu 2, the material that emits green light in the material of the light-emitting layer of the machine', for example, the same as the derivative of the sputum, the coumarin derivative: U-p-B-block, Polyfluorene derivatives and the like. Among them: things and so on. '疋 聚 疋 疋 的 的 聚 聚 、 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ 'Poly-p-phenylene block derivative, hydrazine U hydrated, better, polyfluorene derivative and the like. # 乂 疋 疋 belongs to the 分子 竹 bamboo organism, poly 苟 derivative and so on. The acetylene and the organic light-emitting layer may also be added to the purpose of improving the luminous efficiency or changing the wavelength of the light, such as the wavelength of light. Examples of the lining agent include an anthracene derivative, a coumarin derivative, a rubrene derivative, a quinone oxime, a squalilium derivative, and a squalilium derivative. The phenanthrene derivative styrene pigment, a tetracene derivative "pyrazolone derivative, decacyclene, phenoxazone, etc." The thickness of the layer is usually from 2 nm to 200 nm. (Cathode-side intermediate layer) As described above, a cathode-side intermediate layer such as an electron injecting layer or an electron transporting layer is laminated between the above-mentioned light-emitting layer and a cathode to be described later. (Electron Transport Layer) The material for forming the electron transport layer may be a known material, and examples thereof include a heart-shaped bamboo organism, anthraquinodimethane or a derivative thereof, benzoquinone or a derivative thereof, Naphthoquinone or its derivative, anthraqUin〇ne or its bamboo organism, tetraoxy onion, ra2曱(raCyan〇anthraquinodimethane) or its derivative, 苟_ (f[u〇 a derivative of ren〇ne, diphenyl dicyanoethylene or a derivative thereof, a diphenoquinone derivative, or a metal complex of 8-meryl quinine or its bamboo organism, poly Yu Lin or a derivative thereof, polyquinoxaline or a derivative thereof, polyfluorene or a derivative thereof, etc. Among the above materials, 'preferably an oxadiazole derivative, a benzoquinone or a derivative thereof, an awake or its a derivative, or a metal complex of querigrin or a derivative thereof, polyquinolin or a derivative thereof, polyquinoxaline or a derivative thereof, polyfluorene 19 201002136j i uu^pn.doc or a derivative thereof What is more, 2-(4-biphenyl)_5_ (heart tributyl)-U, 44 di-saliva, benzene, quinone, hydrazine, tris(tetra) lysine; 2 leaching. Layer) The electron injecting layer is provided between the electron frequency layer rotating electrode or the light emitting layer and the cathode as described above. The electron injecting layer may be, for example, a metal or a soil-checking metal, or may contain a metal or a metal. The alloy, or the oxide of the above metal, the anaerobic material of the south fossil, or a mixture of the above substances, etc., and the column of the metal or its oxygen tilting, self-chemical, and Wei Lu can be cited as: clock, sodium, unloading, Diligent, antimony, oxidized clock, vaporized lithium &amp; potassium difluoride, potassium oxide, potassium fluoride, antimony oxide, fluorination: antimony, fluorination , carbonic acid clock, etc., 'rolling, 2 = object, &quot; compound, carbonate, instantiation, fluorination" 颔, oxidized town, fluorinated town, magnesium oxide, etc. , oxidized melamine, fluorinated bromine, carbonic acid compound, and organic metal having a genus, a metal oxide, or a metal salt. (4) an electron injecting compound, or a composite thereof, or a layered layer having two or more layers It is formed by vapor deposition, and 1 is Ll/Ca^. The electron injecting reed can be formed by a ruthenium method, a scale method, a printing method, or the like. The film thickness of the rabbit left into the layer is preferably about 1 nm to 1 _. 20 201002136 31002pif.doc U strikes;) The material of the cathode is preferably the material and/or conductivity of the work electrons. On the upper side; i 6 material and / or visible light reflectivity compared with oxides, alloy materials, specifically, for example: metal Ϊ Ϊ f; c 辞 ( (butterfly or other graphite intermetallic compounds,: genus or genus n::r genus , transition gold m shop two =, tin, mirror, sharp, remarks, -, gold: less of a combination of the above metal alloys, etc. ^ gold, lithium · magnesium alloy, · indium alloy, extremely visible needs The electrode or the semi-transparent electrode, for example, indium oxide, zinc oxide, tin oxide, γγο, rib polyaniline or a derivative thereof, a phenanthrene or a derivative thereof, and the cathode may be set to two layers or In addition, the electron injecting layer is sometimes used as a cathode. The film thickness of the cathode can be selected in consideration of conductivity or durability, for example, lOnm to 1 〇, preferably More preferably, it is 5 〇 nm to 500 nm. 21 201002136 31002 pii.doc (upper sealing film) After the cathode is formed by the above method, it is formed to protect the luminescent function portion having the basic structure of the anode-light-emitting layer-cathode. The upper portion of the light-emitting function portion is sealed and sealed. The upper sealing film usually has at least one inorganic layer and at least one organic layer. The number of layers can be determined as needed, and the inorganic layer and the organic layer are alternately laminated. Further, when a plastic substrate is used as the substrate, even if the light-emitting function portion is The substrate and the upper part (4) are coated with the film, and the substrate and the substrate are more transparent. The luminescent material such as the organic light-emitting layer is more oxidized and is more likely to deteriorate after contact with water, so that the plastic substrate is laminated. a lower sealing film having high barrier properties against gas and liquid, and then stacking the above-mentioned light-emitting function portion on the lower sealing film. The lower sealing film is usually of the same composition and phase material as the upper thief. [Manufacturing Method of Organic EL Element] Hereinafter, a method of manufacturing the organic EL element of the present invention will be described in more detail. (Anode forming step) A substrate formed of any of the above-described substrate materials is prepared. When the secret is high _ county plate, the lower sealing film is formed as needed on the ^. Next, on the raft, use the above - an anode material to form a catalyst for the anode. When the anode is used as a transparent electrode, as described above, lT 〇, IZ 〇, tin oxide, zinc oxide, indium oxide, zinc lanthanum 22 201002136 31 UU2pif.doc oxide A transparent electrode material, etc. = a tank is used and then formed into a line pattern by photolithography. (, partition wall forming step) After the wood 2-shaped anode is formed, the substrate is formed on the anode The photosensitive resist film is coated thereon. The photosensitive material (photoresist composition; 2 cloth' can be used, for example, by a spin coater (spin, bar coater, roll coater). ), die-, gravure coater (gravure c〇ater), slit coating (10)

The phase (four) wire is carried out. Next, the 纮_using photolithography technique is used to carry out the processing to form an insulating barrier wall. The mask "Photomask" used in the patterning portion of the partition wall forming process is a partition wall shape designed to obtain a pixel region in which the aperture ratio of the pixel electrode is as large as possible, and is produced based on this. In general, the pixel region divided by the partition wall tj becomes a rectangle, but when the organic EL element to be fabricated is used for an element in an active matrix type substrate, the shape of the pixel region designed according to the above criteria generally becomes as shown in FIG. A special shape having a plurality of corners c as shown in FIG. The region of the special shape having the plurality of corner portions ε is the pixel region 2, and the aperture ratio of the pixel electrode 3a defined by the pixel region 2 is designed to be insulated and covered between the wiring and the TFT, and between the electrodes. The maximum value is obtained under the condition of necessary insulation. Any of the positive photoresist and the negative photoresist can be used as the insulating photosensitive material forming the insulating partition wall 1. It is important that the partition wall is 201002136 31002pif.doc. It is insulative. When there is no insulation, some of the pixels flow current and the age is different. The photosensitive material of the partition wall 1 is specifically different. The conjugated amine system is a photosensitive compound of an acrylic resin type and a phenolic acid varnish resin type. Further, in order to improve the drying of the organic EL element, the photosensitive material may contain a material exhibiting light blocking properties. 13 - In order to impart ink repellent properties to the surface of the insulating partition wall i, a (four) material may be added to the partition wall to add the repellent f. Alternatively, after the insulating (four) is formed from the wall, the surface of the insulating wall is covered with an ink repellent material, whereby the surface of the partition wall has ink repellency. The ink repellency is preferably such that it is repellent to both the ink for the intermediate layer described later and the ink for organic light emission. The blackening-reducing compound used when the ink repellent material is added to the photosensitive material may be, for example, an 11-oxygen compound or a fluorine-containing compound. The ink repellent compound exhibits both an organic light-emitting ink (coating liquid) used for forming an organic light-emitting layer to be described later and an organic material ink (coating liquid) used for an intermediate layer such as a hole transport layer. It is suitable for use because it is ink repellent. And a method of forming an ink repellent film on the surface of the partition wall 1 after the partition wall 1 is formed, and for example, a method of applying a coating containing an ink repellent component to the surface of the partition wall, by isolating A method of modifying the surface of the organic material on the wall surface by fluorine substitution, a method of vaporizing the ink repellent component, and depositing on the surface of the partition wall. Specifically, $ enumerates the use of Cp4 gas as a plasma treatment for introducing gas. The partition wall of the organic material is more easily fluorinated with the CF4 gas than the substrate and the electrode, and the surface of the partition wall can be selectively subjected to ink repellent treatment by plasma treatment. 24 201002136 j i wuzpif.doc (Anode-side intermediate layer forming step) The hole is formed in the insulating partition wall to form an organic material such as a transport layer, which is raised into a layer 4 (anode-side intermediate layer). The method of film formation of the dangerous and side intermediate layers. Branch, a method of forming a film by bonding a solution of a solution. 1 material ambiguity' can be exemplified by a solution

The solvent used in the second phase of the reed can be used as long as it can dissolve the material used for the middle side of the anode side. The above-mentioned dissolved gas imitation, methylene chloride, dibu/pentane, monochloropropane special solvent, tetrahydrofuran and other ether-based methyl esters, H and other aromatic flue-based solvents, acetone = acetic acid (10), acetic acid D, _ B Base cellosolve acetic acid; ester-seeking solvent. The above method for forming a solution includes, for example, a spin coating method using a solution, a casting method, a micro-gravure coating method, a gravure coating method, and a bar coating method. Fabrication, light coating method, wire bar coating method, impregnation coating method, slit coating method, capillary coating method, spray coating Coating method such as method, nozzle coating (nozziec〇at) method, gravure printing, screen printing method, flex printing method, offset printing method, reverse printing method A coating method such as a printing method such as an inkjet printing method. From the viewpoint of easy formation of a pattern, a printing method such as a gravure printing method, a screen printing method, a flexographic printing method, a plate printing method, a reverse printing method, an inkjet printing method, or the like is preferable, and particularly preferable It is 25 201002136 31UU2pii.doc A embossing printing for coating an organic luminescent ink when forming an organic light-emitting layer described later. The polymer binder to be mixed is preferably a binder which does not seriously hinder the charge generation. In addition, a binder which does not strongly absorb visible light is suitably used. Examples of the polymer binder include polycarbo (four), polydiacetic acid vinegar, polyacrylic acid methyl s, polymethyl methacrylate, polystyrene, and polystyrene ethylene polyoxyalkylene. When the (four) liquid is applied to the entire surface of the substrate by the above coating method, the coating liquid may (4) be applied to the upper phase, but the barrier liquid may be repelled by the surface of the partition wall and fall into the surface. The coating film is formed in each of the pixel regions by the partition wall and the m domain. The coating film in the axe area is dried by its function. (Organic Light Emitting Layer Forming Step) Next, a step of forming an organic light emitting layer is carried out. The result is from the above _-== using the r pixel area (four) surface luminescent ink, and the use of the = printing method. The relief printing is more preferably flexographic printing. The specific order of the two two two convex is better to use the lower-described preferred letterpress lion-method, the organic smoke #, the ink used by the ink point is greater than or equal to the bribe, the width of the first oil. (4), as shown in FIG. 3, the pixel area obtained by forming the partition wall i for the substrate W on which the electrode (the anode or the cathode) of the electrode of FIG. 26 201002136 3IUU2pif.doc is formed is formed. 2 When the organic enamel 4' is applied and the relief printing is performed, the width dimension i of the convex portion of the relief plate used is set to be 99% to 50% of the width dimension of the pixel region 2. Here, the wide-order pressing of the convex surface 12a is convex to the direction perpendicular to the direction of the printed matter (substrate). For example, when the relief 11 is cylindrical and rotates about the axis, the width of the upper= means The closing direction of the relief u is perpendicular to the _ line direction, see again. Further, the width of the so-called pixel region 2 means a width perpendicular to the printing direction of the ink. '机发九油u When using a high-point solvent having a boiling point of 200t or more to dry the solvent black of the organic light-emitting ink 4 with a slow drying speed, as described above, the relief of the relief printing plate „ The width rule 2 of 12a is set to be smaller than the width dimension L of the pixel region 2, and as shown in FIG. 4, the relief printing plate 11 applies the organic light-emitting ink 4 to the pixel region 2 to the convex surface 12a of the relief printing plate 11. The upper organic light-emitting ink 4 is in contact with the bottom surface of the pixel region 2, and is sandwiched by the bottom surface of the pixel region 2 from the convex surface 12a, as shown in FIG. 5, and is pressed and diffused to include all the corner portions in the entire pixel region 2. The ink 4 is applied over the entire repentant area 2. The money 'as shown in Fig. 6' When the relief printing plate 11 leaves the substrate, the surface of the ink 4 becomes gentle by the surface tension. Moreover, even after drying (Evaporation of the solvent), the viscosity of the ink 4 is also increased because the contact line of the ink 4 and the pixel region 2 hardly moves to form a good organic light-emitting layer. 27 201002136 31U02pit'.doc The above-mentioned better relief printing First In the method, a solvent having a boiling point temperature of less than 200 ° C is used in the above organic light-emitting ink, and the width dimension of the convex surface of the plate used in the relief printing is set to be larger than the width dimension of the pixel region. Specifically, as shown in FIG. The width dimension 丨2 of the convex surface 22a of the convex portion 22 of the plate 21 used in the relief printing is set to be larger than the width dimension of the pixel region 2, and is smaller than {(the above-described width dimension Li) + (the width of the above-mentioned partition wall 1) Size L2) /2} When a low-boiling solvent containing a boiling point of less than 200 〇C is used as a solvent for drying the organic light-emitting ink 4, the convexity of the relief printing plate 21 is as described above. The width dimension of 22a is set larger than the width dimension L1 of the pixel region 2, and then the organic light-emitting ink 4 is applied to the pixel region 2 using the above-described relief printing plate 21 as shown in Fig. 8. Attached to the convex surface 22a of the relief printing plate 21. The organic light-emitting ink 4 is in contact with the bottom surface of the pixel region 2, and is sandwiched by the bottom surface of the pixel region 2 and the convex surface 2仏. As shown in FIG. 5, it is pressed and diffused to include all the corners e. The entire pixel area 2 is obtained. As a result, the first method phase region 2 is coated with the ink 4. In the pixel method, unlike the first method described above, the convex surface 2 i of the plate 21 is applied to the pixel region 2 The ductility of the ink 4 is reduced to a semi-dry core, so the convex dimension 2 is set to be larger than the width dimension of the pixel region 2. The degree of ink in the semi-dry state (four) to the pixel region 2 is lowered. 'Because the convex surface 22a is wider, the ink 4 is pressed and diffused to the 敕: 士下域 2. Then, in the semi-dry state, the high-viscosity ink 28 201002136 j _zpii.doc is slowed down, so the solvent is evaporated when the contact line is organic Light-emitting layer. h shirting, thereby forming well The above organic light-emitting ink is prepared by dispersing organic bamboo shoots in a solvent. Examples of the dissolution or dispersion of the material or the stabilizer include, for example, a solution of a solvent such as a solvent, a methyl isobutyl hydrazine or a cyclohexanone. Among them, the mixed organic light-emitting material of toluene, "previously sulcata" or the like has a good _: a fragrant organic solvent. In the above solvent, the boiling point is 20 〇m or more. ... - (^ΐιη) ^ hexyl benzene, etc., her _2 (8) t full - A Ben, Benja Jun and so on. In the solvent of the above-mentioned luminescent ink, the amount of the organic compound used in the boiling point method can be appropriately determined depending on conditions such as the solvent used for the light material = 20 〇c or the shape of the pixel region. ο Organic hair; 2: ==: The amount of the agent in the letterpress printing method can be appropriately determined by the conditions such as the shape of the melt at a boiling point of less than 200 °C. Organic hair or pixel area used in addition, in the organic light-emitting ink, the city can be, the target + # agent: oxygen agent, purple two plus interface active letterpress printing; ===== good use the above 201002136 31002pif. For example, when the relief is cylindrical and rotates about the axis, the circumferential direction of the relief corresponds to the direction of pressing onto the object to be printed, and each convex surface makes the circumferential direction substantially coincide with the longitudinal direction of each convex surface. The circumferential direction is arranged in a stripe shape. Further, in the organic light-emitting layer forming step, it is preferred that a plurality of corresponding inks are selectively applied as the organic light-emitting ink to a predetermined partition wall to form at least red, green, and the third. There are, layers. Specifically, for example, a letterpress printing "organic luminescent ink, followed by letterpress printing to coat the ITO organic luminescent ink, and then using letterpress printing to smear green, and dreams from the female genre may also cause red, respectively. Transfer; the light ink adheres to the predetermined convex surface of the relief, and further transfers the organic light-emitting ink. &lt; (Cathode side intermediate layer forming step) Room type: After the above organic light-emitting layer is formed, 'Electronic transmission electrons or electrons are formed as needed> The cathode side intermediate layer such as the main entry layer. The method of forming the '= side layer is formed in the case of the electron transport layer, and in the case of the low molecular electron transport material, the vacuum steaming method at the end of the V, or To "do not use the uncle to the molecular electron transport material, the method of scooping 4 =. ! In the case of film formation in the state of being transferred or glazed, the film formation side of the electron transport layer formed by the Lok solution, the X seeding, the above-mentioned hole forming layer by the solution, and the ruthenium method are deleted. The film formation method of the same method is the same as in the case of the electron injection layer, for example, by a vapor chain method, a sputtering method, a printing method, or the like. (Cathode Formation Step) The cathode is formed using any of the above materials by, for example, vacuum evaporation, sputtering, chemical vapor deposition (CVD), iontophoresis, and laser ablation (iaserabiati〇n). The method is formed by a method of laminating a metal thin film or the like.

As described above, after the cathode is formed, an upper sealing film is formed to protect the light-emitting function portion having the basic structure of the anode-light-emitting layer-cathode. The upper sealing film is composed of at least one inorganic layer and at least one organic layer as needed. The number of layers of these layers can be determined as needed, and basically the inorganic layer and the organic layer are alternately laminated.有机 The organic EL device of the present embodiment can be used as a light source for a planar light source, a segment display device, a dot matrix display device, and a backlight of a liquid crystal display device ((4)

Duan Wei: Two ^ two: the organic EL element that lights up into a pattern of the king as the surface of the facade light source: the organic layer of the part is formed into a very thick mosquito, which forms at least any of the anode and the cathode as FIG. 31 201002136 31W2pil.doc method. By using these methods to form the organic light in the form of a pattern, and to selectively apply a voltage to a plurality of electrodes, it is also possible to realize a segment device capable of displaying numbers, characters, simple symbols, etc. As the source of the dot-to-earth display device, the organic a-element may be formed by, for example, forming an anode and a cathode in a stripe shape, and arranging them so as to be orthogonal to each other when viewed from the layer direction. Further, in order to realize a dot matrix display device capable of performing partial color display and multi-color display, for example, a method of distinguishing a plurality of types of light-emitting materials having different light-emitting colors, and using color filter are used. The method of color filter and fluorescent conversion filter is ^. The dot matrix display device can be a passive drive or can be actively driven in combination with a TF or the like. The display device described above can be used as a display device such as a computer (c〇mputer), a television (tdeV1S1〇n), a mobile terminal, a mobile phone, a car navigation, a viewfinder of a video camera, and the like. Further, the planar light source is a thin self-luminous light source, and can be used as a backlight of a liquid crystal I page display device or a planar light source for illumination. Alternatively, it can be used as a curved light source or display device by using a flexible (f|exibIe) substrate. EXAMPLES The examples of the present invention are described below, but the following examples are intended to illustrate the preferred embodiments of the present invention and are not intended to limit the invention. 32

201002136 iuu^pif.d〇C The following example shows the main ^ % ^ -fc^ Αό -ir vehicle-mounted organic EL element

It is fine for the object, but the organic EL of the present invention is limited to the organic EL of the driving method. The organic component of the other driving methods such as the method and the matrix type can also be applied to the passive (Example 1) (substrate) Preparation and anode formation) First, prepare for 200 mm (vertical) X200! On the transparent glass plate of (horizontal) x0 7 匪 (thickness), a TFT array and an anode (a substrate) were formed, and further patterned to form an i-shaped anode. The repeating interval (pitch) of the anode is (10) front, and the anode (line width) is 70. In contrast, the interval between the anodes (viscosity) is 10 (line/gap = 7 / / 1 〇 )). When the image is in the thickness direction of the substrate, the image consumption area of the pixel is formed, and the film is formed in an island shape along the one direction and at a predetermined interval in the film ιτο extending in the direction. (Formation of the partition wall) Next, a positive-type resist (manufactured by Tokyo Ohka Kogyo Co., Ltd., trade name "OFPR-800") is applied to the entire surface of the substrate by a spin coating method to form the coating film. After drying, a photoresist layer having a film thickness of 1 //m was formed. Then, a photomask designed to maximize the pixel area under the condition of covering the TFT element and other wirings is disposed on the photoresist layer. Using an Alignment Exposure Machine (Daily Network) The screen manufacturing company, trade name "MA1300"), irradiates the photoresist layer with ultraviolet rays via the above-mentioned 412⁄4 (exposure step). 33 201002136 31UU2pii.doc ,, after the above exposure steps, using the photoresist industry (stock), the trade name "_·3 ^ light part (development step).") remove the upper return layer of the exposure layer, will The glass substrate is placed on a heating plate (h === (4), so that the sensitization butterfly completely heats up the partition wall (organic insulating layer) of the surrounding pixel region by the light lithography step of the above-mentioned array, and the isolation is performed. The anode is exposed inside the wall. The resulting barrier wall has a width dimension of 20 and a height dimension of 1 #m. In addition, each pixel region is a special shape having a plurality of corners and a maximum width of 50 // mx and a maximum length of 150 /zm. Set (SAMC0 enters the partition wall and then uses a vacuum plasma using CF4 gas to be manufactured by Internationa Unc., trade name "Hong Ba 2〇〇 B"). It is treated with a liquid repellency. (Formation of the anode side intermediate layer) Next, preparation of a polymer A suspension of (3,4-dioxyethyl porphin)/polystyrene yellow acid company, trade name "Baytron P AI4083", and using a 0.2 //m membrane flher The suspension was filtered. This filtrate was applied to the above-mentioned region by a nozzle coating method. Next, the coating layer was heat-treated at 20 Torr for 2 Torr to form a hole injection layer having a thickness of 60 nm. (Formation of organic light-emitting layer) A rain molecular light-emitting material (manufactured by the company, trade name "RP158") as an organic light-emitting material was dissolved in a weight ratio of anisole and cyclohexylbenzene to 34 201002136 jiuuzpif.doc 7.3 In the mixed solvent, the ink (concentration of the polymer luminescent material · · · weight percentage ^ ^ x The ratio of the cyclohexylbenzene in the mixed solvent used is greater than or equal to n The boiling point of the anisole is less than 2〇 〇.〇. ' L and the flexographic printing plate used (material: the width of the width of the opening of the convex surface of the convex portion of the stripe convex shape of the convex embossed convex) is 5. (4) 60%, that is 3. Front == and = ίο version) Printing: The device (manufactured by Sakamoto Photo Printing Co., Ltd., the product name is 1 Na, and the organic light-emitting ink glazed on the convex portion of the relief plate is aligned with the pixel area to perform printing: For example, the above-mentioned convex surface is diffused by the pressing, and the special shape is covered by the organic light-emitting ink even if the === surface. ' Regarding the presence or absence of the above-mentioned leak-coating portion, :::Manufacture' product name "〇_二镜: rate = recognition. The shape of the organic light-emitting layer in each region is determined And the anode side "machine illuminating ink _ sub-pixel area of the corner of the partition wall in the two-photo layer film formation on all including (the formation of the cathode) dance, ί organic light-emitting layer ^ on the thickness of ι〇0 α When the organic EL element obtained by the above method is caused to emit light, it is confirmed that the luminous intensity of the entire light-emitting surface is uniform, and the light-emitting intensity of the entire light-emitting surface is uniform. Compared with the private product, the amount of light per unit area is also improved. (Embodiment 2) / From the preparation of the substrate, until the pixel region is formed by forming the partition wall, and the hole is formed into the layer, Since the above-described embodiment is carried out in the same manner, the detailed description of the steps will be omitted. Hereinafter, the formation of the subsequent organic light-emitting layer and the subsequent steps will be described. (Formation of an organic light-emitting layer) _ , a polymer which is an organic light-emitting material The luminescent material (§_contact company, manufactured by the trade name "RP158") was dissolved in a solvent composed of xylene alone to prepare an organic luminescent ink (concentration: 丨 weight percent, viscosity: 10 cp) In addition, the xylene used has a point of less than 2 。. The stripe shape of the flexographic printing plate (material: polythene resin, height of the relief convex portion: 100 / zm) used in the vertical f The width dimension of the convex surface of the convex portion is greater than 60 rpm of the maximum width (width of the pixel mouth portion) of each of the pixel regions. Using the relief, and ^, printing I set (Japanese photo printing company) Manufactured, the product name "ship_= row position adjustment" is such that the organic ink on the convex portion of the relief is aligned with the electrode exposed portion of the pixel region, and the organic light-emitting ink is diffused by the convex surface. The entire surface of the pixel electrode in the special shape and the pixel region is not leaked by the organic light-emitting oil even after drying. Set a few, 36

201002136 31002pif.doc Kang Gongh stern-ship microscope (Ni Er in the shape of each pixel area _ organic light-emitting layer into the "between: = light ink is divided into the pixel area of the corner of the corner in the image = optical layer filming Including all of the formation of the electrode (the formation of the electrode), the electrode is deposited on the organic light-emitting layer, and the electrode (cathode) is deposited to a thickness of just one, and further, a thickness of 2000 A is used as the oxidized scale layer. Thereby, an organic EL element having a bottom emission structure is formed. 2. When the organic EL element obtained by the above method emits light, it is confirmed that the light emission of the entire hair is uniform, and the early position is compared with the previous product. [Industrial Applicability] As described above, the method for producing an organic EL device of the present invention can produce an organic polishing layer without uneven coating, and an increase in aperture ratio of a pixel electrode. By using the method for producing an organic EL device of the present invention, an organic EL device and a display device having excellent light-emitting characteristics per unit area of light emission can be obtained. λ Although the present invention has been implemented Example disclosed above However, it is not intended to limit the invention, and any person having ordinary knowledge in the art can make some changes and refinements without departing from the spirit and scope of the invention. t Please refer to the definition of full-time H. 37 201002136 31002pif.doc [Simplified Schematic] Figure 1 shows the design of insulating isolation when the aperture ratio of the pixel electrode is maximized during the manufacturing process of the organic EL device. Fig. 2 is an enlarged view of a main portion of Fig. 1. Fig. 3 is an enlarged view of a main portion of Fig. 1. Fig. 3 is a view for explaining an organic light-emitting ink which is slow in drying speed when a pattern of a pixel is obtained in a pattern of a pixel region. The width of the convex surface of the convex portion of the printing plate is set to be smaller than the nine-dimensional size of the pixel region to perform the printing step in the organic light-emitting layer forming step in the method for producing an organic a device of the present invention, and the black contact is shown in the drawing. The state before the pixel area. The soil map 4 is used to illustrate that when the organic light-emitting ink having a slow drying speed is used, the width of the convex surface of the convex portion of the flexographic printing plate is set to The printing step in the organic light-emitting layer forming step in the method for fabricating the organic rainbow element of the present invention is performed in the pixel region, and the figure shows that the oil is brought into contact with the pixel region, and the pixel is pressed by the convex surface of the printing plate. Fig. 5 is a plan view showing a pixel region of the ink application state after the step shown in Fig. 4. Fig. 6 is a view showing the flexographic printing plate after the step shown in Fig. 4 and the ink is dried _ FIG. 7 is a cross-sectional view of the substrate of the organic a-element in the state. FIG. 7 is for using the organic light-emitting ink having a relatively fast drying speed, and setting the width of the convex surface of the convex portion of the flexographic printing plate to be larger than the width of the pixel region. 38 201002136 31002 pif.doc in the method for producing the R organic a device, and the figure shows the state before the ink in the printing step of the oil organic light-emitting layer forming step is brought into contact with the pixel_. And: = = = the speed of the organic light-emitting ink having a faster drying speed, the width dimension of the organic light-emitting layer is formed in the pixel region organic light-emitting layer; the ink in the EL element manufacturing method is in contact with the pixel region, and Widely 'and' in the figure does not make oily green / and press the pixel area with the convex surface of the printing plate. [Main component symbol description] 1 : Insulating partition wall 2 : Pixel area 3 : First electrode (anode) 3a = pixel electrode 4: organic light-emitting ink 10: substrate 11, 21: relief printing plates 12, 22: convex portions 12a, 22a of relief printing plate: convex surface of convex portion c. corner portion of pixel region 1!, 丨 2: relief The width dimension of the convex surface of the plate used in printing L: width dimension of the pixel area &amp; L2: width dimension of the insulating partition wall 39

Claims (1)

201002136 31002pif.doc VII. Patent Application Scope 1. A calendering element of an organic electroluminescent device is formed by stacking at least a cathode, a positive electrode, and an organic light-emitting layer between the organic electroluminescence and the anode on a substrate. The above-mentioned cathode manufacturing method is characterized in that the partitioning wall forming step of the (four) light-emitting element is performed to have a pixel region which is divided into a shape having a corner portion; and the step of forming an organic light-emitting layer by the partition wall , in the surrounding wall, using a letterpress printing method to coat a package: two sets of &amp; from the organic light-emitting ink, thereby forming a solvent for the organic light-emitting layer, the method of the organic electroluminescent device of the first item "In the above organic light-emitting ink, a solvent having a Buddha spot temperature of jOOC or more is used, and the width dimension of the convex surface of the plate used in the above-described relief printing is set to be smaller than the width dimension of the pixel region. 3. As claimed in the second item The manufacturing method of the organic light-emitting device, wherein the width dimension of the convex surface of the plate used in the above-described relief printing is further formed into the above image The method for producing an organic electroluminescence device according to the above aspect of the invention, wherein the organic light-emitting ink uses a solvent having a boiling point temperature of less than 200 ° C. And the width dimension of the convex surface of the plate used in the above-mentioned relief printing is set to be larger than the width dimension of the above-mentioned pixel region. 5. The method of manufacturing the organic electroluminescence device according to claim 4, wherein the above-mentioned letterpress The width dimension 12 of the convex surface of the plate used in printing is set to be larger than the width dimension L2 of the above pixel region and smaller than 40 201002136 31002 pif.doc {(the above I degree dimension L)) + (the width dimension of the upper bee partition wall l2) / 2} The method for producing an organic electroluminescence device according to the invention of claim 2, wherein the convex surface of the letterpress printing plate is formed in a direction of pressing onto the object to be printed in order In the k-method of the organic electroluminescence device according to Item 1, the organic light-emitting layer is formed in a step η, and the organic light-emitting ink is used as the layer: Forming at least two kinds of organic electroluminescent elements, respectively, and obtaining the organic electroluminescent element, and obtaining the manufacturing method according to one item. In the scope of application, the scope of the invention is 9. The display device includes the application specific ~ organic electro Light-emitting element. 41