TW200917883A - Light emitting device and fabricating method thereof - Google Patents

Abstract

The light emitting device of this invention is obtained by sealing a light emitting side of a light emitting part by a multilayer sealing film which has at least an organic layer to form the light emitting device. A face of the at least an organic layer of the light emitting device has a three-dimensional structure which can control a light emitting direction dependence of light emitting intensity, and is formed with the organic layer at the same time. It is preferable to use an energy harden resin to form the organic layer. The light emitting device of this invention has a inbuilt function to control the light emitting direction dependence of the light emitting intensity without increasing the occupancy space of the device.

Description

200917883 IX. Description of the Invention: [Technical Field] The present invention relates to a light-emitting element excellent in light extraction property and a method of manufacturing the same. [Prior Art] In a light-emitting element such as an organic electroluminescence device (hereinafter sometimes referred to as an organic EL device) or a light-emitting diode display device, a light-emitting layer sandwiched between an anode and a cathode is laminated on a substrate to cover The light-emitting layer is laminated in a multilayer sealing film. In the conventional light-emitting device, a glass substrate is used as the substrate. However, in order to reduce the weight of the device, improve the impact resistance, increase the area of the device, and improve the efficiency of manufacturing, a plastic substrate is used (for example, the patent specification) Bulletin 2003-531745). The plastic substrate is flexible, and a large-area plastic substrate can be easily obtained, and the cutting operation for dividing into a unit after laminating the light-emitting layer is also easy. However, the plastic substrate has higher gas and liquid permeability than the glass substrate. The display material such as the organic EL light-emitting layer covered by the substrate and the upper multilayer sealing film is easily oxidized, and is easily decomposed by contact with water. Therefore, when a plastic substrate is used, a ruthenium multilayer sealing film having a high barrier property against gas and liquid is laminated on the substrate, and then a luminescent layer is laminated on the lower multilayer sealing film to cover the laminated luminescent layer. And the upper layer of the multilayer sealing film. The lower multilayer sealing film is usually formed of the same material and the same material as the above upper multilayer sealing film. The lower multilayer sealing film and the upper multilayer sealing film typically have at least one inorganic layer and at least one organic 200917883 layer. The number of layers can be reduced, and it is basically an inorganic film and an organic film. The light extraction of the light-emitting element is performed from the substrate side, from the upper multi-layer sealing film side, and from the substrate to the upper side of the multilayer sealing film side. A light-emitting element of a type in which light is taken out from the substrate side is referred to as a bottom-emitting light-emitting element, and a light-emitting element of a type in which light is taken out from the upper multilayer sealing film side is referred to as a top-emitting type light-emitting element, and light of a type that is taken out from both sides is emitted. The element is referred to as a dual light emitting type light emitting element. Among these types of light-emitting elements, it is common that the multilayer sealing film on the light extraction side must be transparent or semi-transparent (g) and have a phenomenon due to its physical property*. Therefore, in the conventional light-emitting element, the layer sealing film on the light extraction side is composed of a layer which is as transparent and flat as possible. Among the above-mentioned conventional light-emitting elements, it is necessary to control the pure dependence of the degree of light (four degrees) depending on the various illumination devices installed at the place, various display devices, and various electronic devices. In this case, various optical elements such as a scattering sheet are provided on the entire surface of the light extraction surface of the light-emitting element. _, due to the setting of each of the additional viewing elements, the pure device # at the installation of the S-component must have its required space = thus creating a bottleneck that becomes a device miniaturization. Improve this tendency. SUMMARY OF THE INVENTION The present invention has been made in the above-described prior art, and its object is to provide a light-emitting element having a function of controlling the direction dependence of the light extraction intensity of a light-emitting element without increasing the possession of the element. space. In the case of the light-receiving intensity of the light-emitting device, the direction of the light-receiving intensity of the light-emitting device is controlled to be 70, or the light-emitting/viewing of the front surface of the light-emitting element is improved. The present invention provides a light-emitting element comprising a light-emitting device of the following configuration, which is a light-emitting element obtained by sealing a wire-out side of a light-emitting portion by a multilayer sealing film having at least one organic layer. The one surface has a three-dimensional structure that can control the direction dependence of the extracted light intensity. The light-emitting element according to the above [1], wherein the three-dimensional structure is formed while forming the organic layer. [3] The light-emitting element according to [1] or [2] wherein the organic layer is made of an energy curable resin. [4] The light-emitting element according to the above [3], wherein the three-dimensional structure is formed by temporarily hardening a coating film of the energy curable resin and then completely curing the coating film while forming the organic layer. .

[5] The light-emitting element according to the above [3], wherein the three-dimensional structure is formed by curing the coating film of the energy curable resin on a liquid-repellent surface. Formed at the same time. [6] The light-emitting element according to any one of the above [1] to [5] which is an organic EL light-emitting element. [7] A method for producing a light-emitting element, which is a method for producing a light-emitting element formed by sealing a light extraction side of a light-emitting portion by a multilayer sealing film having at least one organic layer, and having a surface of the organic layer Forming a tiltable three-dimensional structure of the controllable light intensity, in this step, forming the above-described three-dimensional structure while forming the above organic layer. [8] The method for producing a light-emitting device according to the above [7], wherein the organic layer is formed using an energy curable resin. [9] The method for producing a light-emitting device according to the above aspect, wherein the energy-curable contact coating is semi-cured and then completely cured, and the three-dimensional structure is formed simultaneously with the formation of the organic layer. [10] The method for producing a light-emitting device according to the above [8], wherein the surface which is hard-touched by the energy is hardened in a state of being formed on the sparse surface, and the above-mentioned (5) is formed to form the above-mentioned Three-dimensional structure. [11] The method for producing a light-emitting device according to any one of the above-mentioned [1], wherein the light-emitting device is an organic EL light-emitting device. EFFECTS OF THE INVENTION The light-emitting 7L member of the present invention is transparent when viewed from the front side of the light extraction side, and is transparent when viewed obliquely, thereby improving the front surface ease of the light-emitting element. Such an effect can be achieved by forming a three-dimensional structure while forming an organic layer on at least one of the plurality of organic layers in the multilayer sealing film on the light extraction side. If the inorganic layer of the multilayer sealing layer is formed into a three-dimensional structure, it must be highly etched or patterned. However, in the present invention, a three-dimensional structure can be easily formed on one surface of the organic layer while forming the organic layer. In addition, in the case where the optical film is used in the method of the first film, a high adhesion step and an optical film member are required. However, in the manufacturing method of the present invention, the one-dimensional structure of one surface of the organic layer can be used for a general sealing film. In the formation step, the process is simple, and the light-emitting element with good light extraction efficiency and excellent quality of 200917883 can be accommodated. Therefore, the light-emitting element and the manufacturer thereof according to the present invention increase the space occupied by the light-emitting element, and the light-emitting element is not improved at a low cost. 4, the efficiency of the removal is easy to understand, the above and other purposes, features and advantages can be more clearly as clear as P, and with the _ formula, the detailed description of the [Embodiment] The light-emitting element and its manufacturing method Embodiment 5 is clear. The light-emitting element of the present embodiment is a light-emitting element in which the light-extracting side of the light-emitting portion is sealed by an outer layer seal film having at least one right-hand layer, and the at least one organic layer is provided on one surface thereof. It is possible to control the stereoscopic structure in which the direction of light intensity is taken out. In the light-emitting element of this configuration, a three-dimensional structure in which one surface of the organic layer is formed is formed while forming the organic layer. In the method of manufacturing a light-emitting device of the present embodiment, one surface of the at least one organic layer of the light-emitting element in which the light-emitting element of the light-emitting portion is sealed by the multilayer sealing film having at least one organic layer is controllable. A method of producing a light-emitting element of a light-emitting element having excellent light extraction property by taking out a three-dimensional structure in which the direction of light intensity is dependent, is characterized in that a three-dimensional structure of one surface of the organic layer is formed simultaneously with the formation of the organic layer. In the above configuration, the organic layer is formed by an energy curable resin. The energy curable resin is a resin which is cured by irradiation with an ultraviolet ray, an electron beam (light weight) such as electrons 200917883 f, or a hardening by application of ruthenium. The three-dimensional structure of the above organic layer can be formed by temporarily hardening the tantalum film of the energy curable resin described above and then completely hardening it. In the fourth embodiment, the three-dimensional structure of the organic layer can be formed while forming the organic layer by hardening the coating film of the lanthanum curable resin on the lyophobic surface. The above-mentioned semi-hardening is a state in which the energy applied to the single f coating film is lower than the energy for completely curing the monomer - light or thermal energy in the present embodiment. More specifically, it means a state in which deformation occurs when it comes into contact with the coating film, but the coating film does not flow or deform even if it is inclined. In the semi-hardened state, the coating film is hardened at a microen level and a portion hardly hardened. When the energy of the hardened state is increased, the entire coating film is cured by the unevenness corresponding to the hardened localized spots. The reason for this is that the hardening speed of the hardened portion is rapid. In other words, it is presumed that the coating liquid at the portion where the curing is not performed is attracted to the hardened portion, and the hardening portion is used as a core to carry out the curing reaction. As a result, the coating portion is hardened and hardened from the hardened portion at the time of the semi-hardening. It can be said that the portion which has been hardened at the time of the semi-hardening is the core, and the remote crystal growth is completely cured, and the organic layer is formed, and the micro-sized irregularities are formed on the surface of the organic layer. In addition, in the following, the method of "forming a semi-hardened state by applying energy of light or thermal energy to the monomer coating film to a temperature at which the monomer is completely cured" may be referred to as a semi-curing method. 200917883 On the other hand, when the coating film is formed on the lyophobic surface, the liquid on the lyophobic surface is repelled by the surface, and the cohesive force of the liquid is induced. As a result, the coating liquid on the lyophobic surface is unevenly distributed in the micro-stage, and island-like irregularities are generated on the liquid surface. When light or heat energy 1 is applied to the film under the recording state, the coating film is hardened while maintaining the island-like irregularities of the surface. Specifically, the lyophobic surface is a surface which is not lyophilized of the inorganic layer constituting the multilayer sealing film or a surface of the substrate which is not subjected to lyophilic treatment. Alternatively, the surface may be lyophobic by plasma treatment using a gas having a fluorine atom. When the organic layer is an intermediate layer of a multilayer sealing film, one surface of the three-dimensional structure (concavity and convexity) serves as an interface with the inorganic layer of the upper layer of the organic layer, and the organic layer having irregularities is located at the highest of the upper multilayer sealing film. In the case of the outer layer, one surface on which the unevenness is formed becomes the surface of the organic layer. Further, when the light-emitting element is a top-emission type light-emitting element, the organic layer having the unevenness is at least one organic layer of the upper multilayer sealing film; and when the light-emitting element is a bottom-emitting type light-emitting element, the organic layer having the unevenness The layer is at least one organic layer of the lower multilayer sealing film; and in the case where the light emitting element is a dual light emitting type light emitting element, the organic layer having the unevenness is optionally at least one layer of any one of the multilayer sealing film or the two multilayer sealing films . In the organic layer used in the present embodiment, at least one of the organic layers is characterized in that it has a three-dimensional structure on one surface thereof for controlling the direction dependence of the extracted light intensity. This structure is uneven, and is transparent when viewed from the front side of the light extraction side 11 200917883, and is obliquely opaque to the self-luminous element. In the case of angle observation, it is not opaque when viewed from an angle of 60 degrees, and is not opaque when viewed from an angle of 45 degrees from inclination, and is better than 30 degrees from inclination. The material of the constituent material of an organic layer of the organic layer = the size of the convex layer, which can be applied according to the application at the time of semi-hardening according to the shape; In order to improve the desired multiple conditions, the unevenness is determined (MwZ t is preferably a size of the above-mentioned unevenness, and the total film thickness is usually set in the range of 50 nm=m. Further, the range of the organic film is ζ: ζ. This is the main test #膜 = strong 朗 与 职 职 与 与 与 与 ^ ^ ^ ^ ^ ^ 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封In the case of the lyophilized layer which is lyophilized on the surface of the substrate, the layered relationship of the lower multilayer sealing film, the light-emitting layer, and the upper multilayer sealing film in the light-emitting device of the present invention is also the same. 'The light-emitting layer can be directly laminated on the lower multilayer sealing film, or indirectly laminated. Similarly, the upper multilayer sealing film formed on the light-emitting layer can be directly laminated on the light-emitting layer or indirectly laminated. For example, if organic An example of the laminated structure of the EL element is a flexible substrate / (organic / inorganic) lower multilayer sealing film / anode (for example, IT 〇) / hole injection layer (for example, Μ0Ο3 film / poly (3, 4) A Dioxythiophene / Styrene sulfonic acid film)/polymer 12 200917883 Layer/Popular layer (for example, domain)/cathode layer (for example, (organic/inorganic) upper multilayer sealing film)) multilayer composition in the present embodiment, The light-emitting portion of the lower-layer dense layer _ and ^ =; refers to the light-emitting layer or has the above-mentioned: when the light-emitting element is an organic a-element, the light-emitting portion has an anode, a cathode, and a light provided between the electrodes. Floor. The range of the organic layer and the inorganic layer of the strict production part and the upper multilayer sealing film is 22 nm~10"m. When the thickness is less than 5 nm, the mechanical properties of the film are maintained satisfactorily. If the thickness exceeds 10 (four), the film thickness of the positive body becomes thicker, and the right 媲ρτ - luminescent layer extraction = rate machine a 70 pieces, etc. From the (the constituent materials of the lower and upper multilayer sealing films), the inorganic layer forming the lower and upper multilayer sealing films may be, for example, Wei #(SiO 2 ), nitrogen cut (SiN), or oxynitrid (10) bismuth (Α12〇) 3) Other materials. The method for forming the inorganic film can be a film forming method known in the art of sputtering CVD or chemical vapor deposition (CVD). The above-mentioned cuckoo clock method is a method of forming a film, and means that particles of atomic or molecular size collide with a target (material of a film), and the target material is fine particles and is released in a gas phase, and the particles are deposited in a predetermined state. A method of forming a film on the surface of a second plate. Further, in some cases, a phenomenon in which atoms or sub-sized particles collide with a target and the target is released into a fine particle gas is sometimes referred to as sputtering. In addition, the CVD (Chemical Vapor Deposition) method is a method of applying the thin film constituent element to the reaction chamber, applying heat or plasma, etc. A method in which a chemical reaction is generated by energy, and a reaction product is deposited on a predetermined 'substrate surface to form a thin film. On the other hand, the organic layer constituting the lower and upper multilayer sealing films can be suitably polymerized by using a fluorenyl-(meth) propylene compound having a (fluorenyl) propylene group which is excellent in adhesion to the inorganic layer material. An acrylic polymer. In addition, the (meth)acrylic compound means a compound containing acrylic acid, methyl acrylic acid, and vinegar of these compounds as a structural unit. The (meth)acrylic compound can be formed into a coating film by a known coating film forming method such as a solution coating method or a spray coating method, and the coating film is irradiated with (four) energy (electron wire, wire, material chemical line). Or applying heat h' to thereby polymerize it to form a C-based polymer. In this case, in the present embodiment, the method of forming "on at least one organic layer" - the above-described semi-hardening method or on the lyophobic surface forms a three-dimensional structure on one surface of the organic layer while the organic layer is completely cured. The (meth)acrylic compound is not particularly limited, and may be a compound containing one or more (?) groups in the molecule. When the methyl group is a propylene group, it can be obtained with an inorganic film. (When the methyl group has 2 or 3 groups, the crosslinking density becomes high, and the film of the organic layer = higher transmission. The selectivity of the crosslinking density affects the size of the above-mentioned unevenness, and thus this aspect is considered. Preferably, the material is selected. The (meth)acrylic compound may, for example, be (meth)acrylic acid 200917883 -2 · ethyl acetonate, (meth)acrylic acid propyl ester, (meth) acrylic acid ·2_ A compound having a trans group such as butyl vinegar, a compound having an amine group such as dimethylaminoethyl (meth)acrylate or diethylaminoacetate (meth)acrylate, (meth)acrylic acid, 2 a compound having a slow group such as (meth) acetophenoxyethyl acid, 2-(methyl) propyl ethoxyethyl hexahydrophthalic acid, (methyl) enoic acid glycerin (methyl)acrylic acid tetrahydroanthracene vinegar, (meth)acrylic acid hexanoic acid, (meth)acrylic acid phenoxyethyl ketone, (meth)acrylic acid isodecyl ester, etc. Bacillus acid, (meth) acrylic acid isovalerone, (meth) propyl, acid lauryl vinegar, (meth) styrene stearyl vinegar, (mercapto) acrylic acid Butoxyethyl ketone, ethoxydiethylene glycol (meth) acrylate vinegar, methoxy diethylene glycol (mercapto) acrylate vinegar, decyloxy dipropylene glycol (methyl) acrylate vinegar Acrylic monofunctional compound, or diethylene glycol bis(indenyl) acrylate, 1,4-butanediol bis(f) acrylate, 匕^ hexanediol di(methyl) propyl hydrazine曰, 1,9· sterol-(meth)propane acrylate, triethylene glycol di(meth) acrylate, PEG#200 di(meth) acrylate, peg#400 bis(fluorenyl) Acrylate, PEG #600 di(meth)acrylate, neopentyl glycol di(曱G-based) acrylate, dihydroxydecyltricyclodecane di(meth)acrylate, etc. 2 g of this compound, A bifunctional (meth)acrylic compound such as a bifunctional (meth)propionic acid epoxy ester or a bifunctional (fluorenyl) urethane urethane or the like, or three or more (fluorenyl) groups The acrylic-based compound may use pentaerythritol hexa(indenyl) acrylate vinegar, pentaerythritol tris(decyl) acrylate, pentaerythritol tetra(meth) acrylate, trimethylolpropane tripropyl Acrylic polyfunctional monomer such as dilute acid ester or trimethyl methacrylate tetraacrylate or (meth)acrylic polyfunctional epoxy acrylate, (meth)acrylic acid 15 200917883 polyfunctional acrylic acid The light-emitting element and the method for producing the light-emitting element of the present embodiment are particularly useful when the light-emitting element is an organic EL element. In the article, the structure of the multilayer sealing film described above is also The other main components of the organic EL device of the present embodiment are as described below in detail. ^^4 (Substrate) The (4) substrate is a substrate that does not change when the electrode is formed and the formed layer is formed. For example, a glass plastic, a molecular film, a ruthenium substrate, a substrate in which these layers are laminated, or the like can be used. (Electrode and Light-Emitting Layer) The basic structure of the organic EL element is at least one between the electrodes of the transparent or semi-transparent-containing anode (the second electrode) and the cathode (the second electrode) having at least a light-transmitting cathode. Rhyme. The above hair (10) uses a low molecular and/or high molecular organic luminescent material. In the organic EL element, as a constituent element around the light-emitting layer,

The layer other than the electrode, the anode, and the light-emitting layer may be a layer provided between the cathode and the light-emitting layer, and provided between the anode and the light-emitting layer. The layer disposed between the cathode and the light-emitting layer may be an electron injecting layer, an electron transporting layer, a hole blocking layer or the like. The above electron/main layer is a layer having a function of improving the efficiency of electron injection from the cathode, and the above electron transport layer is improved from the electron injection layer or closer to the negative (four) electricity? A layer of the function of transporting the layer to the luminescent layer for electron transport. And having a function of plugging holes in the electron injecting layer or the electron transporting layer 16

200917883 can have =; == hole _. A layer having a plugging electricity by which "is surely == flowing electric_", and a layer between the drain and the light emitting layer may be a hole injection layer, a hole transport layer, an electron blocking layer, and the like. The hole injection layer is a function to improve the efficiency of hole injection from the cathode. The layer "the so-called electric_transmission layer" is a layer having a function of improving the self-electricity layer or closer to the anode = hole transport layer to the light-emitting layer. And the method is that the hole injection layer or the hole transport layer has a function of blocking electron transport, and the layers are called electron blocking layers. The power month b* which blocks the electron transfer wheel can be circulated only by making The element of the electron current is confirmed by the decrease in the current value. The various combinations of the periphery of the light-emitting layer as described above include a configuration in which a hole transport layer is provided between the anode and the f-light layer, and the cathode and the light-emitting layer are provided. There is no electron transport layer between them, and an electron transport layer is provided between the cathode and the light-emitting layer, and a hole transport layer is provided between the anode and the light-emitting layer. For example, the following a) to d) can be specifically exemplified. Structure a) anode / hair 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 (where '/ Each layer is adjacent to the laminate, the same as the following.) Wherein 'the above-mentioned light-emitting layer refers to a layer having a light-emitting function, and the so-called hole transport layer refers to a layer having a function of transmitting a hole, and the so-called electron 17 200917883 transport layer means having A layer for transmitting electrons. In addition, the electron layer and the hole transport layer are collectively referred to as a charge transport layer. The light-emitting layer and the electron transport layer 1 electron transport layer may also be used independently of two or more layers. The charge decanting film provided on the electrode has a function of improving the charge injection efficiency from the electrode and has an effect of lowering the driving voltage of the element. Generally, it is called a charge injection layer (hole injection layer, electron injection layer). In addition, 'in order to improve the adhesion to the electrode or improve the electricity from the electrode, the injection' may be adjacent to the electrode to provide the above-mentioned charge injection layer or an insulating layer having a film thickness of jnm or less. In order to improve the adhesion of the interface or prevent mixing, etc., it is also possible to insert a thin, buffer layer at the interface of the bonding layer of the carrier layer. Regarding the order or number of layers of the layer and the thickness of each layer, the luminous efficiency or In addition, a charge injection layer (electron injection layer, hole injection layer) is provided. The organic EL device includes an EL element in which a charge injection layer is provided adjacent to the cathode, and a charge injection layer is provided adjacent to the anode. The organic element, for example b, specifically includes the following structures e) to p). Ο anode/charge injection layer/light-emitting layer/cathode f) anode/light-emitting layer/charge injection layer/cathode g), pole/charge injection layer / luminescent layer / charge injection layer / cathode 10, pole / charge injection layer / hole transport layer / luminescent layer / cathode 0, pole / hole transport layer / luminescent layer / charge injection layer / cathode J) anode / charge injection layer / hole transport layer / light-emitting layer / charge injection layer / when pole k) anode / charge injection layer / light-emitting layer / charge transport layer / cathode 200917883 l) anode / light-emitting layer / electron transport layer / charge injection layer / cathode m) Anode/charge injection layer/light-emitting layer /electron transport layer / charge injection layer / cathode η) anode / charge injection layer / hole transport layer / luminescent layer / charge transport layer / cathode 〇) anode / hole transport layer / luminescent layer / electron transport layer / charge injection layer / Cathode Ρ) anode / charge injection layer / hole transport layer / light-emitting layer / electron transport layer / charge injection layer / cathode < additionally, the layer structure examples shown in the above (a) to (p) can also be set by the anode The form closer to the side of the substrate and the form in which the cathode is provided closer to the side of the substrate. (anode)

In the above-mentioned anode, for example, a film having light transmissivity may be used, and a film of gold, oxide, metal sulfide or metal having a good electrical conductivity may be used, and a transmittance may be suitably used, and the organic layer may be appropriately selected depending on the organic layer to be used. . Specifically, σ ' can be a film made of a conductive glass formed of indium oxide, oxidized, tin oxide, and indium tin oxide (10, Indium Tin 〇xide), oxidized or the like (nesa silver). , copper, etc., preferably ιτο, indium zinc oxide, tin oxide. Production method = enumeration vacuum test, sputtering method, ion plating method, test, etc. Alternatively, the anode can also use polyaniline or its derivatives, An organic transparent conductive film of a certain age or a derivative thereof, etc. The film thickness of the anode may be appropriately selected in consideration of light transmittance and conductance coefficient, for example, lOnm to 10 #m, preferably 20 nm to 1 "m, More preferably, it is 50 nm to 500 nm. (Curtain injection layer) The hole injection layer can be disposed between the anode and the hole transport layer or between the anode and the light-emitting layer as described above. Examples of the material of the layer include a phenylamine system, a star-shaped amine system, a phthalocyanine system, cerium oxide, and oxidation.

Molybdenum, cerium oxide, oxide oxide oxide, amorphous carbon, polyaniline, polybenzaldehyde derivative, and the like. (Cone transport layer) The material constituting the hole-transmitting layer can be exemplified by polyvinyl carbazole or a derivative thereof, poly-Wei or its derivative, poly-fragment having an aromatic amine on a touch or a domain, and a derivative derived from a burned derivative. , aryl bribe, & derivative, triphenyl = amine derivative, polyaniline or its derivatives, polythiophene or its derivatives, polyarylamine or its 聚m poly- or its derivatives, poly (9) phenylacetylene) or a derivative thereof, or a poly(2,5-form 6-ene) derivative thereof, etc. Among these compounds, the hole transporting material used for the hole transport layer is polyvinyl carbazole or a derivative, a polydecane or a derivative thereof, a side chain 3, a polyoxyalkylene derivative having an aromatic amine compound group in the main chain, a polyphenylene, or a y-bio, poly-porphin or a derivative thereof, or a polyarylamine Or a derivative thereof, = (p-phenylene block) or a derivative thereof, or poly(2,5- porphin) or a derivative thereof = rain molecule hole transport material, more preferably polyvinyl carbazole or It is derived from a poly-methane derivative of the poly-domain, or a poly-b gas-fired derivative having a steroid amine on the line. In the case of a low molecular hole transport material, a better 疋It is dispersed in a polymer binder and used. 20 200917883 (Light-emitting layer) The light-emitting layer usually has an organic substance (low-eight compound and high-molecular compound) which mainly emits fluorescence or phosphorescence. The material for forming the light-emitting layer which can be used in the present embodiment is, for example, the following materials: (Light-emitting layer forming material 1: pigment-based material) Examples of the pigment-based material include cyclohexamine (CyclOPpendamine), and tetraphenylene. Butadiene derivative compound, triphenylamine derivative" sub--: street creature, shot derivative, coumarin derivative, 対幷啥琳何物, stilbene filament derivative, diphenyl Ethylene hydrocarbon derivatives, ^Street organisms, "Secret ring compound K ring compound, ♦ Rui brie tii street organism, oligophene derivative n dimer, Cailin dimer. (Light-emitting layer forming material 2 : Metal complex compound material) Examples of the metal complex compound material include a metal complex which emits light in a physical state such as a silver complex or a complex compound, and a base metal, a terrane, and a terrane. Compound, benzoxazole zinc mismatch , benzoquinone zinc sulphate complex, azomethine L ^ genus, (d) a sage, or b, Eu, Dy and other rare earth metals, ligands have chewing bismuth, bismuth imidazole, quin Metal complex such as porphyrin structure, etc. " (Light-emitting layer forming material 3: polymer-based material) Derivatized Ϊ Ϊ 对 笨 笨 笨 笨 笨 笨 笨 笨 笨 笨 笨 《 《 《 《 吩 吩 吩 吩 吩 吩 吩 吩 吩 吩 吩 吩 吩 吩 吩21 200917883 A poly-derivative, a polyethylene derivative, a compound obtained by polymerizing the above-mentioned dye body or a metal complex-based light-emitting material, etc. - a material in which the light-emitting layer forming material sheet emits blue light, for example, A woman's arylene-based ejector, „ 二 二 peak derivative, and the B-materials of these compounds, poly-p-benzene derivatives, poly-derivatives, and it is a polyethylene molecule of southern molecular materials. Salivary derivatives, poly-bens or poly-purine derivatives. The materials which emit green light in the light-emitting layer forming material, such as derivatives, coumarin derivatives, and the likes of the present compounds, the test organisms, and the like can be listed. Among them, the good 子 子 子 对 对 对 对 衍生物 衍生物 衍生物 衍生物 衍生物 。 。 。 。 Among the materials which can be listed first, for example, a high-order reading material or the like is preferable. Materials, poly derivatives, and the like. Acetylene Hebi, Polythiophene Derivative (Light Emitting Layer Forming Material 4: Dopant Material) The efficiency of light wave is increased or changed, coumarin derivative, ten-touch organism, and Cailin ketone derivative: read ( Decacyclene), a material for forming an electron transport layer, a known material can be used, for example, an oxadiazole derivative, a dioxin or a derivative thereof, benzoquinone or a derivative thereof can be used as an example 22 200917883 , Qin brewing; or its derivatives, 蒽@昆 or its derivatives, tetracyanohydrin or its derivatives, ketone derivatives, diphenyl dicyanoethylene or its derivatives, a diphenoquinone derivative, a metal complex of 8-hydroxyquinoline or a derivative thereof, polyquinoline or a derivative thereof, polyquinoxaline or a derivative thereof, polydipeptide or a derivative thereof, and the like. Among these compounds, preferred are oxadiazole derivatives, benzoquinone or a derivative thereof, brewing or a derivative thereof, or a metal complex of 8-meridene or a derivative thereof, or polypyrene or a derivative thereof, polyoxin or a derivative thereof, polydi or a derivative thereof, more preferably 2-(4-biphenyl)-5-(4-t-butylphenyl)-1,3 , 4-° 恶一0 sitting, benzene brewing, brewing, three (8- Jing Lin) Ming, Ju Yulin. (Electron Injection Layer) The electron injection layer may be disposed between the electron transport layer and the cathode or between the light emitting layer and the cathode as described above. The electron injecting layer may have an electron injecting layer formed by a single layer structure of the Ca layer according to the kind of the light emitting layer, or may be provided with an electron injecting layer formed by a laminated structure of the following layer and the Ca layer. The layer consists of a metal of Group 1 and Group 2 with a periodic table other than Ca (using IUPAC (International Pure, Applied Chemistry)) and a work function of 1.5 to 3.0 eV of metal and its metal oxides, dentates and carbonates. Any one or two or more of them are formed. Examples of the metal of the Group 1 of the periodic table having a work function of i 5 to 3 〇eV or an oxide, a halide or a carbonate thereof include lithium, lithium fluoride, sodium oxide, lithium oxide, lithium carbonate and the like. Further, the work function is 1.5 to 3. 〇eV, in addition to the metal of the Group 2 of the periodic table or an oxide, a complex or a carbonate thereof, examples thereof include ruthenium, magnesium oxide, and 23

200917883 Fluoride wr, barium fluoride, barium oxide, magnesium carbonate, etc. In the cathode, an electrode intercalating compound having light transmissivity, a bovine genus such as Zno (zinc oxide), graphite tin or oxidized _ 0 indium oxide: = oxygen: or the like. Metals such as can, two or two: U, town, calcium, pin, sputum and other soils; gold, silver, Syrian, Ming, recorded, crane and other transition metals; tin, Ming, sharp, ==, 钸, , money, t, and the combination of the metal or the two of the two. Alloys: alloys, alloys, indium-silver alloys, bells, alloys, lithium-indium alloys, calcium-aluminum alloys, etc. Further, the above laminated structure may be used. Examples thereof include ^ ^ two or two layers of tantalum, material AM, 4 metals, metal oxides, fluorocarbon alloys, and laminated structures of metals such as Ming, silver, and complex. EXAMPLES Examples of the core are described. The following examples are given to illustrate the invention in more detail and are not intended to limit the invention. The premise of the following embodiment is that the sacrificial element is an organic component. The present invention is effective for the case of an organic a-element and is equally effective for other luminescent elements. Further, in the organic EL device of the following Example 3, as described above, the electrode element is the simplest one consisting of only the anode and the cathode, and the anode and the cathode are laminated on both surfaces of the light-emitting layer. In addition, in addition to the anode and the cathode, the other forms of the electrodes, that is, the 24 2009 17883 hole injection layer, the hole transport layer, the electron transport layer, and the electron injection layer, are combined in the It shape, and the elements are applied to the light-emitting layer. A case where a layer is formed to form a light-emitting portion. In the following Example 3, the electrode elements formed on both sides of the light-emitting layer are briefly described. However, it is to be understood that the electrode elements of any one of the layers can be similarly applied to the light-emitting layer. Namely, after laminating various combinations of electrode elements on the light-emitting layer, a multilayer sealing film is laminated thereon. In the present invention, the above-described configuration is shown by sealing a light-emitting layer or a light-emitting portion by a multilayer sealing film. (Example 1) (Formation of organic film having sea-island structure 1) This example is an experimental example in which the surface of the organic layer having irregularities on one surface of the present invention is formed, and a glass substrate is used. The coating film for the organic layer formed on the substrate is completely hardened by being semi-hardened, whereby irregularities are formed on one surface of the organic layer. First, the glass substrate was lyophilized by a UV-〇3 (ozone) treatment apparatus (manufactured by TechVision Co., Ltd., trade name "Model 312 UV-03 Cleaning System"), and then placed in a membrane sealing device (VITEX, USA) Manufactured, the organic film forming chamber of the product name "Guardian 200". An organic monomer material (manufactured by VITEX Co., Ltd., trade name "Vitex B arix Resin System monomer material (Vitex 701)") is introduced into a gasifier, vaporized, and a monomer vapor is ejected from the slit nozzle to cause the substrate to The fixing speed is passed through the nozzle, whereby the monomer is attached to the substrate in a uniform thickness, and a coating film formed of a monomer is formed on the substrate. 25 200917883 Next, the substrate on which the monomer coating film was formed was irradiated with uv (ultraviolet) light (lamp power: 30%) in an amount sufficient to crosslink the monomer of the coating film to be insufficiently cured. Semi-hardened. Then, the coating film in the semi-hardened state was irradiated with UV light (lamp power: 6 〇%) which sufficiently cured the coating film. The obtained cured film (organic layer) was observed by an optical microscope, which had a sea-island structure, and = the surface was formed with irregularities corresponding to a sea-island structure with a height difference of about 12 μm. When the obtained substrate was observed from the front side, the obtained substrate was colorless and transparent, and high transmittance was not observed. When observed obliquely, the transmittance decreased due to light scattering, and it became pale white. (Comparative Example 1) An organic film was formed in the same manner as in Example 以外 except that υν light (lamp power: 60%) having sufficient curing of the monomer was irradiated. The surface obtained by f is flat, and it is transparent and shows high transmittance regardless of the financial direction. In the element produced in Example 1, the brightness observed from the front side was higher than that of the element produced in Comparative Example i, and the efficiency was high. (Example 2) (Formation 2 of organic film having a sea-island structure) This example is an experimental example in which a mask of the present invention is formed, and the surface of the substrate is kept. At night, the organic layer of the smear (4) is completely hardened with Wei, thereby forming irregularities on one surface of the organic layer. The glass substrate was not liquefied by a uv-〇3 (ozone) treatment apparatus, and was placed in an organic film forming chamber of a sealing device (manufactured by νιτΕχ, Inc., "Wdia·"). The organic monomer material ITEX company manufactures the 'product name', so the blood is also used to be in the gasifier, so that the gas = the monomer vapor is ejected from the slit nozzle to make the substrate (4) The fixed speed is sprayed onto the substrate, whereby the monomer is attached to the substrate in a uniform thickness, and a single coating film is formed on the lyophobic surface of the substrate.

For a long time, the substrate on which the monomer coating film is formed is irradiated with a sufficient amount of UV light (lamp work_%) to singulate the coating film. The obtained cured film (organic layer) was observed by an optical microscope, and it had a sea-island structure, and a height difference of about 1 m corresponding to the sea-island structure was formed on the surface. When the obtained substrate was observed from the front side, that is, the obtained substrate, it was colorless, and the high transmittance was shown, and if it was obliquely slanted, the transmittance/or smallness was pale white due to green light. (Example 3) (Production of a ruthenium-containing EL element having an organic layer ruthenium layer sealing film having a sea-island structure) A ruthenium (transparent electricity =) having a film thickness of about 150 nm formed by sputtering was patterned. The formed glass substrate was cleaned with an organic solvent, an alkaline detergent, and super-waxy water, and dried, and the obtained substrate was subjected to uv-o3 treatment using uv_〇3. —= The ITO surface side of the above substrate was suspended from poly(3,4)ethylenedioxythiophene/polyethyleneglycolic acid (manufactured by 110 Starck-V TECH Co., Ltd., trade name “Bytr〇n 27 200917883 PTPAI4083”). The liquid was treated with a filter having a diameter of 0.5, and the suspension was formed into a film by spin coating at a thickness of 7 Å, and dried at 200 ° C for 10 minutes in a hot plate on a hot plate. Then, a 1.5 wt% solution of a ruthenium molecular organic light-emitting material (manufactured by Sumation Co., Ltd., trade name ILumation GP130) was prepared by using a solvent in which diphenylbenzene and benzamidine were mixed in 1.1. This solution was spin-coated to form a film having a thickness of 80 nm on the substrate on which "BytronP" was formed. C. removing the light-emitting layer of the electrode portion or the sealing portion, and introducing it into the vacuum chamber, and moving to the heating chamber (afterwards, the process is performed in a vacuum or nitrogen gas, so that the components in the process are not exposed to the atmosphere) . Next, it was heated at a temperature of about 1 〇〇〇c for 60 minutes under vacuum t (vacuum degree ixl0-4Pa or less). Thereafter, the substrate is moved into the evaporation key chamber, aligned with the cathode mask, and the light-emitting portion and the extraction electrode portion are vapor-deposited to form a cathode. The Ba metal was heated by a resistance heating method to a vapor deposition rate of about 2 nm/sec and a film thickness of 5 nm (j was vapor-deposited and subjected to electron beam evaporation to a vapor deposition rate of about 0.2 nm/sec. A1 is deposited at a thickness of i5〇nm to form a cathode. (Formation of the above-mentioned multilayer sealing film) After the component is fabricated, the substrate is moved from the evaporation chamber without being exposed to the atmosphere to a film sealing device (manufactured by VITEX Corporation, USA) The product name is "Guardian 200". The mask is placed on the substrate. Then, the substrate is transferred to the inorganic film forming chamber, and the first inorganic layer, that is, the oxide film is formed by sputtering. The A1 with a purity of 5N is used. Metal target 'introduction of argon and oxygen' 28 200917883 A film is formed on the substrate to form a transparent and flat aluminum oxide film having a thickness of about 6 〇 nm. After the first inorganic layer is formed, the inorganic layer is removed. The mask is replaced with a mask for the organic layer and moved to the organic film forming chamber. The organic monomer material (manufactured by VITEX, trade name "Vitex Barix Resin Plus (10) m〇n〇mermaterial (Vitex7〇1))) is introduced. Gasification into the gasifier, ejecting the single nozzle from the slit nozzle The vapor 'passes the substrate through the nozzle at a fixed speed, thereby allowing the monomer to adhere to the substrate in a uniform thickness. Then, the substrate is adhered to the substrate by UV rays, and the monomer is cross-linked and hardened to form the first organic The obtained film is a transparent and flat film having a film thickness of about 13 # m ° after forming the first organic layer, 'moving the substrate to the inorganic film forming chamber, introducing argon and oxygen' (four) plating method to perform the second inorganic layer That is, the film formation of Oxidation Ming. The thickness of the film is =0 rnn (4) The urinary body is flat (4) Oxidation _. The second inorganic layer is formed into a film, and the second organic layer is formed in the same manner. The second organic layer is complex; Similarly, the third inorganic layer is formed, and the third organic layer and the fourth inorganic layer are formed in the same manner. (4) The organic layer of the island (four) convex (stereoscopic structure) is formed to form the fourth inorganic layer, and then the same as the first organic layer. In the same manner, in Example 1, uv light was used to harden the irradiation in the monomer. The unevenness of the coating film was semi-hardened on the surface (one surface), and secondly: 29 200917883 The semi-hardened coating film was irradiated hard. The uv light of the ridge of the island structure is 77, and it is made by the first stage An organic layer (cured film) is obtained in the above manner. = In: r: a multilayer sealing film having a degree = optical layer. By having at least one member, it is characterized by the above-mentioned side to the side. The direction dependence of the light intensity of the elementary system = its:: face:: controllable method is the following illuminating element; two = method = two, (four) illuminating element structure organic layer at the same time forming the upper layer of the machine - one face The light-emitting element of the present invention is opaque when viewed from the side of the light extraction side = π when viewed obliquely, and is π degrees from the front surface of the illuminating element U. _Manufacturing method, the dense_form 3 process of the pass F is simple and the light extraction efficiency can be easily manufactured. As described above, according to the light-emitting element of the present invention and the method of manufacturing the same, the space occupied by the light-emitting element is not increased. It is also inexpensive to provide a light-emitting element having a function of establishing a direction-dependent property of light control extraction intensity. The present f(four) illuminating element having the feature 30 200917883 is particularly useful in the case of an organic EL element. Although the invention has been disclosed in the preferred embodiment as above, the invention is defined in the autumn, and any person skilled in the art, within the range of The scope of protection of the present invention is defined by the scope of the appended claims. [Simple description of the diagram] None [Key component symbol description] None 31

Claims (1)

200917883 X. The scope of application for patents: The layer of secrets is a small number of smuggling (four) shirts - many of the financial machine layer: the light-emitting elements that are formed by the light-removing side of the light-emitting part, and the organic layer of the j-layer has controllable take-out The three-dimensional structure of light intensity dependence. 2. The illuminating unit of claim 1, wherein the three-dimensional structure is formed at the same time as forming the money. The light-emitting element according to the item (4), wherein the organic layer is made of an energy curable resin. The light-emitting element according to claim 3, wherein the above-mentioned structure is formed by forming the organic layer while temporarily hardening the (four) temporary hardening of the energy curable resin. . 5. The light-emitting element according to claim 3, wherein the above-mentioned structure is formed by hardening a coating film of the energy curable resin on a surface on a thin surface. The organic layer is formed at the same time as the light-emitting element described in the scope of the invention, and the bL light-emitting element. 7. A method of manufacturing a light-emitting element, which is a method for manufacturing an optical element by sealing a light extraction side of a light-emitting portion by a multilayer sealing film having at least one organic layer, " having a surface controllable on the one surface of the organic layer The step of extracting the three-dimensional structure of the direction dependence of the light intensity, in which the above-described three-dimensional structure is formed while forming the organic layer. The method for producing a light-emitting device according to claim 7, wherein the organic layer is formed using an energy curable resin. 9. The method for producing a light-emitting device according to claim 8, wherein the coating film of the energy curable resin is temporarily semi-hardened, and then π is fully cured to form the organic layer. (4) Forming the above three-dimensional structure. 10. The manufacturer of the light-emitting element according to item 8 of the patent application scope Secondly, the above-mentioned energy hardening Lailan coating is formed to be hardened in a lyophobic state, and the above-mentioned three-dimensional structure is formed while forming the above organic layer. 11. A method of manufacturing a handle of a handle, wherein the light-emitting element is an organic EL light-emitting element. 1.. 33 200917883 VII. Designated representative map: (1) The representative representative of the case is: None. (2) A brief description of the symbol of the representative figure: None 8. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: None