TW200421917A - Organic EL panel and method for manufacturing the same - Google Patents

Abstract

To improve the contrast of display surface and to eliminate an appearance trouble that desiccating member inside panel will be seen from the display side. An organic EL panel 10 includes a support substrate 11 and an organic EL device 12 which is mounted on the support substrate and formed by interposing an organic layer containing at least a luminescent layer between a pair of electrodes. By bonding a cover 13 onto the support substrate 11 through an adhesive agent 15, an enclosing space is formed by enclosing the organic EL device 12 with the support substrate 11 and the cover 13. A colored desiccating member 14 is provided within the enclosing space on the internal surface of the cover 13 opposite to the support substrate 11.

Description

200421917 Description of the invention: [Technical field to which the invention belongs] The present invention relates to an organic EL (Electroluminescence) panel and a manufacturing method thereof. [Prior art] An organic EL panel is formed by using an organic EL element as a basic structure and arranging the organic EL element as a unit-plane light-emitting component on a flat substrate. The organic EL element is formed by forming a first electrode on a supporting substrate. An organic layer including a light-emitting layer made of an organic compound is formed thereon, and a second electrode is formed thereon. It is known that the characteristics of the organic EL panel are deteriorated when the organic layer and the electrode are exposed to the outside air. This is due to the penetration of moisture into the interface between the organic layer and the electrode, which prevents electron injection, thereby creating dark spots as non-light-emitting areas, or caused by electrode corrosion. In order to improve the stability and durability of organic components, A sealing technology that insulates the organic EL element from the outside air is indispensable. This sealing technique generally employs a method of bonding a sealing member covering the electrode and the organic layer with an adhesive on a support substrate on which the electrode and the organic layer are formed. Fig. 1 shows a conventional technique of the organic EL panel (see Patent Document 1 below). Organic EL panel (Organic EL element M is a laminated body 6 composed of a glass substrate 2 serving as a supporting substrate, an ITO electrode 3, an organic light emitting material layer 4 and a cathode 5, a glass sealed can 7 serving as a sealing member, a drying member 8 and ㈣ The material 9 is formed. The drying member 8 is designed to be absorbed and removed after being sealed by the glass sealing pot 7

O: \ 92 \ 92316.DOC 200421917 is set by the initial moisture content and the moisture released or immersed with time. In particular, since the organic layer forming the organic rainbow element has a low heat resistance, it is impossible to remove moisture by heat treatment before sealing, so that such initial moisture cannot be completely discharged. Therefore, such a drying member 8 is not provided in a sealing member in a panel using a conventional organic el material. In the following Patent Document 1, the following is described. As the drying member 8, a compound that can absorb moisture chemically and maintain a solid state even if it absorbs moisture is used. Inner surface (surface opposite to glass substrate). Patent Document 1 Japanese Patent Application Laid-Open No. 9-148066 discloses a conventional organic EL panel in which a supporting substrate (a glass substrate and a transparent substrate made of an organic EL element) is used to emit light from the supporting substrate (a bottom surface emitting method). In this case, a phenomenon occurs in which external light enters the inside of the panel from a support substrate or the like (a sealed space surrounded by the support substrate and a sealing member (glass sealing pot 7)), and then the incident light is sealed. The inner surface of the component (the surface opposite to the support substrate) or the surface of the dry component provided on the inner surface is reflected from the display surface of the support substrate. In addition, most of the light emitted by the organic EL element is set to be from The light-emitting surface of the support substrate is emitted, but a part of the light becomes scattered light in the panel, which is the same as the above-mentioned external light. The scattered light is reflected on the inner surface of the sealing member or the surface of the drying member mounted on the inner surface, and is reflected from the support. The display surface of the substrate is emitted. In this way, if external light incident into the panel and scattered light from the organic EL element enter the sealing member, Surface reflection or inner surface drying member, and the sensible

O: \ 92 \ 92316.DOC 200421917 The display side formed by the emitted light is emitted, which causes a problem that the contrast of the organic EL element is reduced. : And: If it is projected on the inner side of the sealing member or on the reflecting side of the dry member, then directly from the display surface or: base = case, etc .: sometimes the dry part placed inside the panel may be seen to the appearance Causing adverse effects. Therefore, if this defect in appearance is regarded as a defective product, it is necessary to design with high precision for the prevention of human light and scattered light from external light, and it is also necessary to improve the accuracy of the placement position of the drying parts, etc. The problem of lower yields and higher product costs. [Summary of the Invention] This month, I propose to solve the above problems. That is, the present invention aims to provide "an organic EL panel and a method for manufacturing the same, so as to improve the contrast of the display surface", eliminate the appearance defects of the dry parts that can see the interior of the panel from the display surface to the side, and improve the In order to achieve the above-mentioned object, the organic EL panel and the manufacturing method thereof of the present invention have at least the following independent technical solutions. [Technical solution 1] An organic panel is formed on a supporting substrate in a An organic el element having an organic layer containing at least a light-emitting layer is sandwiched between the counter electrodes, and a sealing member that isolates the organic EL element from the outside air is bonded, characterized in that 'the sealing member is opposed to the support substrate. [Colored dry part] is provided on the surface. [Technical solution 6] A method for manufacturing an organic EL panel

O: \ 92 \ 92316.DOC 200421917 An element forming process for forming an organic EL element having an organic layer containing at least a light-emitting layer between a counter electrode and a substrate, and a sealing member that isolates the organic anal element from the air ^ The sealing step superimposed on the support substrate is characterized in that, before the sealing step, a colored dry member is mounted on a surface of the sealing member opposite to the support substrate. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 2 to 4 are explanatory diagrams of a hungry panel according to an embodiment of the present invention. In the organic anal panel 10, 20, and 3G, an organic EL element 12 having an organic layer including at least a light-emitting layer between a pair of electrodes is formed on a support substrate u. In addition, the sealing materials 13, 21, and 31 are deposited on the support substrate 11 by the drilling agent 15, so that the sealed space is composed of the organic ELtc element 12 enclosed by the standard substrate U and the sealing members 13, 21, 31 Keep it away from the outside air. Inside the sealing member, a drying member 14 is provided separately from the organic EL element 12 on a surface facing the support substrate 11. Here, in the organic rainbow panel of the embodiment shown in FIG. 2, the flat sealing member 13 is used, and the above-mentioned sealing space is formed by mixing the spacers into the deadening agent 15. In the organic panel according to the embodiment shown in FIG. 3, a sealing recess 21A is formed on the support substrate 11 side of the mountain sealing member 21, and the above-mentioned ridge space is formed between the support base ridge and the ridge recess 21A. In the organic EL panel 300 of FIG. 4 in a known manner, a sealing recess 31A is formed on the supporting substrate u side of the sealing member 31, and the cutting substrate η and the sealing recess M are formed as described above. Space, and a mounting recess 3 1B for a drying member 14 is formed in the sealing recess 31A. The mounting recess 3 1B is permeable to moisture

O: \ 92 \ 92316.DOC 200421917 The blocking film 32 is used to prevent the drying member 14 from falling off. X. In the organic EL panels 10, 20, and 30 according to the embodiment of the present invention, a member that has been colored in a light-absorptive color is used as the dry material 14. The light-absorptive color is only required to be a color capable of absorbing wavelengths in the visible light region. Youyuan black, gray, and vegetable & Yimu color temple can absorb all wavelengths of visible light uniformly. As a one-touch method, ten parts are used, and dry parts colored approximately black or gray are used. / The drying member 14 is a water knife that is installed and installed after bonding the sealing members Η, η, and 用于 to absorb and remove the initial moisture present therein and to release or / re-enter the water knife over time as long as it has this function. It is not particularly limited. : As one embodiment, the coloring is performed by using a hygroscopic molding body described below and dispersing pigment into the molding body. As the seal members 13, 21, and 31, as long as the airtightness can be maintained, P may be formed of a metal, a resin, or the like, but as an embodiment, it is preferably formed of a glass-breaking substrate. According to the organic EL panels 10, 20, and 30 of this embodiment, display is performed by using the light emitted from the support substrate 11 side, and the second substrate is formed on the support substrate U, and the colored drying member 14 is provided on the sealing member 13 , 31, on the surface opposite to the support substrate 11, so the color has dried up: The piece 14 absorbs external light incident into the panel or political light from the organic element η can prevent these lights from being reflected from the display. Shoot from one side. As a result, when the display degree Γ of the organic EL element 12 is used for display 1, the defective appearance of the dry flashing member 14 which can be placed in the panel from the support plate 11 side can be eliminated.

O: \ 92 \ 92316.DOC 200421917 In order to prevent reflection on the inner surface of the sealing members 13, 21, 31, it is also possible to consider applying a light absorbing coating to the inner surface of the sealing member, but according to this method, outside the head: the seal is applied In the process of the inner surface of the component, the degradation factors (moisture, presence, or absence) of the organic EL element 12 are generated due to the applied coating: sealing: and the like, which leads to a problem that the life of the organic EL element 12 is reduced. If the drying member 14 is colored according to the embodiment of the present invention, the number of processes in the manufacturing process will not be affected, and no degradation factor of the organic EL element 12 will be generated in the sealed space. ^ "Especially by making the color of the drying member 14 into a high visible light absorption or gray", the above-mentioned effect can be more reliably exerted by uniformly absorbing the above-mentioned external light or scattered light and all wavelengths in the two-light region. In the organic EL panel for color display, the display can effectively change the display ratio and appearance of the display. In the embodiment where the drying member 14 is formed using a hygroscopic molded body, == the coloring can be performed regardless of the drying member 14; the material can be colored to a desired color. Thus, the above-mentioned effect can be ensured without knowing the moisture absorption function of the member 14. Fang 4 Implementation of the four sealing members 13, 21, and 31 as a glass-breaking substrate. First, based on the above-mentioned effects, the following effects can be obtained. That is, :: the sealing members 13, the sealing members 13, 21, are formed by using and using a glass material generally used for and supporting the substrate u. The 7 kg ′ support substrate 11 and the dense 4 $ have the same thermal expansion coefficient, which can improve the mechanical strength of the panel due to temperature changes. Second, the surface of the broken glass substrate is flat to a sealing member made of metal, etc., so it is difficult to form a gap at the interface O: \ 92 \ 92316.doc -11-200421917 with the dead joint Η, from ^ ^ ^ ^ ^ ^ Difficult to immerse people from the outside, ^ relay. Therefore, a metal sealing member for moisture and the like: ‘= τ property. Thirdly, since the sealing members 13, 2 and 3 are used, by forming a glass substrate 1 仵 3 21 31, the panel can be made thinner and lighter. Next, a method for manufacturing an organic rainbow panel according to an embodiment of the present invention will be described. FIG. 5 is an explanatory diagram showing a schematic flow thereof. First, as an element forming step WA, an organic element 12 in which a first electrode and an organic layer i and a second electrode are laminated is formed on a supporting substrate u ±, and an organic layer including at least a light-emitting layer is formed on an opposite electrode. Organic EL element 12. Here, the organic components are formed using a well-known film-forming step and a pattern forming step generally used. On the other hand, as the drying member mounting step S1B, the drying member M is mounted on the sealing members 13, 2 and 31. In this drying member mounting step MB, a colored drying member 14 that has been colored in advance, such as pigment dispersion, is prepared, and it is mounted on the inner surface of the sealing member 3, 2 i, 31 (and supporting Opposite surface of the substrate 11). As the sealing step S2, the organic EL element is bonded to the support substrate 11 by applying an adhesive 15 to the periphery of the support substrate 11 or the bonding surfaces of the sealing members 13, 21, and 31, and then bonding the sealing members 13, 21, and 31 to the support substrate n. 12 Seal. Then, the organic eL panels 10, 20, and 30 according to the embodiment are obtained through an appropriate inspection step S3 as necessary. According to the manufacturing method of this embodiment, the conventional panel manufacturing method is not changed, and the organic EL panels 10, 20, and 30 having high contrast and no defective appearance can be obtained as described above. O: \ 92 \ 92316.DOC -12- 200421917 The features of the organic EL panel and the manufacturing method thereof according to the embodiments of the present invention are summarized as follows. … An organic EL panel formed on a supporting substrate, an organic element sandwiched between a pair of electric and gates and an organic layer containing a light-emitting layer, and a sealing member that isolates the / organic EL element from outside air, It is characterized in that a colored drying member is provided on the face of the sealing member opposite to the support substrate. In the following, it is related to the manufacture of an organic EL panel, which is formed on a supporting substrate, and is formed by a pair of electrodes with an organic layer containing at least an organic layer containing a light-emitting layer. Wei Xu, and a sealing step of bonding a sealing member that isolates the organic element from the outer air to the support substrate, wherein, before the sealing step, the sealing member and the support are sealed. The colored dry parts are mounted on the opposite surface of the substrate. In this way, the colored drying member absorbs the external light incident into the panel or the scattered light from the organic EL element, which can prevent the light from being reflected from the display surface-side after being reflected, and can improve the use of the emitted light from the organic rainbow element. The contrast of the display can also eliminate the appearance of the dry parts that can be seen inside the panel from the support substrate side. In addition, such an advantage can be obtained without affecting the manufacturing accuracy, so it is possible to simply reduce the defective product with low contrast or poor appearance, 'improve the yield of the product,' and reduce the product cost. In addition, the manufacturing method of the present invention can obtain the above-mentioned organic EL panel having the effects of the present invention without any change to the conventional manufacturing method. Secondly, in the above-mentioned organic EL panel and its manufacturing method, the above-mentioned dry member is colored with a light-absorptive color, in particular, it is colored O: \ 92 \ 92316.DOC -13- 200421917 into a substantially black or Roughly gray. In this way, on the basis of the above-mentioned features, all the wavelengths in the visible light region of the above-mentioned external light or scattered light can be absorbed uniformly, and the above-mentioned effect can be performed more reliably. In addition, particularly in an organic EL panel that performs color display, the contrast of the display surface and the appearance defect can be effectively improved. Secondly, in the above-mentioned organic EL panel and its manufacturing method, the drying member is a hygroscopic molded body, and the coloring is performed by dispersing a pigment into the hygroscopic molded body. In this way, on the basis of the above characteristics, regardless of the type or material of the drying member, it can be colored to a desired color, and the above-mentioned effect can be obtained without affecting the moisture absorption function of the drying member. Fourth, in the above-mentioned organic EL panel and its manufacturing method, it is characterized in that the under-sealing; the element is a glass substrate. In this way, on the basis of the above characteristics, it is possible to obtain an aeronautical panel that is thinner and lighter in mechanical strength with respect to temperature changes. [Examples] Specific examples of components [Mdp parts 14] As the drying member 14, a physical desiccant (=, carbon, carbon nanotubes, etc.), a chemical hygroscopic agent described below, and The complex is dissolved in petroleum-solvent, etc.), the dry monomer, / „7: There is a plastic body. For early bodies, the hygroscopicity loss shown below can also be used. Resin is dispersed in the resin component (depleting agent)

O: \ 92 \ 92316.DOC -14- 200421917

Moisturizer molding. As the co-agent, H as the accessory agent, it is sufficient that it has at least a substance capable of adsorbing water = energy, but it is particularly preferably a compound that can adsorb chemically and maintain a solid state even if it absorbs moisture. Examples of such examples include metal oxides, inorganic and organic acid salts of metals, etc., as g γ; Deng Tai Xiaoren 4 inch Bek 琏 uses alkaline earth metal oxides and sulfates as alkaline earth Examples of the metalloid oxide include calcium oxide, barium oxide (Ba0), and magnesium oxide (MgO). Examples of the sulfate include lithium sulfate (Li2S04), sodium sulfate (N ^ SCU), calcium sulfate (CaS04), magnesium sulfate (MgS04), cobalt sulfate (C04), and gallium sulfate: Ga2 (S04) 3), Sulfuric acid (Ti (s〇4) 2), Ishihara acid record (Nis〇 ^, etc.) Others can also use organic materials with hygroscopicity as hygroscopic agent. = Aspect, The resin component (binder) is not particularly limited as long as it does not interfere with the function of the hygroscopic agent, and it is preferable to use a material having high air permeability (i.e., a material with low barrier properties, especially a gas permeable resin). Seed material;] females may include polymer materials such as polyolefins, polyacrylics, polypropylenes, ages, polystyrenes, epoxys, polycarbonates, etc. Among them, in the present invention Polyolefins are preferred. Specific examples include polyethylene, polypropylene, polybutadiene, polyisoprene, and the like, and copolymers thereof. The content of the moisture absorption sword and the resin component depends on their The type and the like can be appropriately set to 100, the total content of the moisturizer, the aerosol, and the resin component to be 1,000 weight, and the hygroscopic agent is about 30 It is sufficient that the resin content is about 70% by weight to 15% by weight 叱 π 叱 / 〇. It is preferable that the moisture absorbent is about 40% by weight to 80% by weight of the resin component is about 60%. % By weight, most preferably about 50% by weight

O: \ 92 \ 92316.DOC -15- 200421917 70% 1% by weight, the resin content is about 50% to 30% by weight. + A hygroscopic molded body can be obtained by uniformly mixing the respective components and molding into a desired shape. In this case, it is preferable to mix the hygroscopic agent, the gas adsorbent, and the like sufficiently in advance. In addition, when mixed with a resin component, it may be heated to form a molten state as necessary. 7 is an example of the present invention, and the hygroscopic molded body is preferably a material obtained by molding a mixture of hygroscopic agents, known ingredients. That is, the second component of G / capsule is used to produce a hygroscopic molded body, thereby avoiding the disadvantages caused by these third components remaining in the molded body (for example, the remaining solvent is Absorption of hygroscopic agent, degrading the performance of the adsorbent, or the disadvantage caused by the residual solvent volatilizing in the sealing member over time). When the soil is mounted on the concrete members 13, 21, and 31, the method is not particularly limited as long as it can be guilty of being fixed in the seal member. For example, a publicly known adhesive or adhesive can be used (Preferred solvent-free adhesive) A method of drilling a hygroscopic molded body and a concrete member, a method of thermally cladding a hygroscopic molded body on a concrete member, A method of fixing the body to the sealing member, and the like. Although the pigment used for coloring and dispersing has nothing to do with the category of inorganic and organic materials, it is appropriate to select a material that does not emit factors that degrade organic EL elements. [Seal member] The cymbals 13 and 31 are preferably formed of a substrate made of glass (sodium glass or non-alkali glass). The sealing recesses 21A and 31A are formed by, for example, continuous application of press forming, etching, and sandblasting. [Adhesive] Adhesive 丨 5 uses heat curing type, chemical curing type (two-liquid mixed

O: \ 92 \ 92316.DOC -16- 200421917), light (ultraviolet) curing type adhesives, the material can be acrylic resin, epoxy resin, polyester, polyolefin, etc. It is particularly preferable to use an ultraviolet curable epoxy resin. To this adhesive, an appropriate amount (approximately 0.1 to 0.5% by weight) of a spacer (preferably glass or plastic spacer) having a particle size of 1 to 100 # m is mixed, and then it is performed with a dispenser or the like Coated. [Organic EL element] An example of a specific structure and material of the organic EL element 12 formed on a support substrate with an organic layer including at least a light-emitting layer between a pair of electrodes is described below. (a) Support substrate: The support substrate 11 is preferably a flat plate or sheet having transparency, and the material can be glass, plastic, or the like. (b) When it is assumed that the electrode emits light from the support substrate 11 side (bottom surface emission method), the electrode on the support substrate 11 side is an anode made of a transparent electrode, and the other electrode is a metal electrode. Composition of the cathode. As an applicable anode material, it can be formed by a film-forming method such as IT0, ZnO, or the like. As the cathode, a metal, metal oxide, metal fluoride, alloy, or the like having a small work function is used, and specifically, it can be used

The Mg% single-layer structure and the stacked structure such as LiOVAl are formed by a film formation method such as evaporation or sputtering. (0) Organic layer: The organic layer uses the electrode on the support substrate 11 side as the anode and the other side as the cathode. It is generally a hole transport layer / light-emitting layer / electron transport 2 gold layer structure. More than just-light emitting from multiple layers

O: \ 92 \ 92316.DOC -17- 200421917 layer, hole transporting layer, electron transporting layer, either the hole transporting layer or the electron transporting layer can be omitted, or both layers can be omitted to leave only the light emitting layer. As the organic layer, an organic functional layer such as a hole injection layer, an electron injection layer, a hole shielding layer, and an electron shielding layer can be inserted depending on the application. The material of the organic layer can be appropriately selected according to the application of the organic EL element 12. Examples are given below, but are not limited thereto. The hole transporting layer may be any material as long as it has a function of high hole mobility, and any of the materials may be selected from conventionally known compounds. As a specific example, a hematoporphyrin compound such as copper phthalocyanine blue, 4,4, -bis [N— (1—inflammatory group) -N-phenylamino] -biphenyl (NPB), such as aromatic tertiary amines, 4 Organic materials such as stilbene compounds such as mono (di-p-toluylamino) -4 '-[4 ((p-toluylamino) styryl] stilbene), triazole derivatives, or styrylamine compounds. Alternatively, a polymer-dispersed material in which a low-molecular organic material for hole transport is dispersed in a polymer such as polycarbonate may be used. A known light-emitting material can be used as the matte layer. As a specific example, an aromatic secondary methyl compound such as 4,4′-bis (2,2, -biphenylvinylbiphenyl (DpvBi)), 1, 4-bis (2-methylstyryl) benzene and other styrene-benzene compounds, 3- (4-bibenzyl) -4-phenyl-5, and tert-butylphenyl1,2,4-diazole (TAZ ), And other fluorescent organic materials such as triazole derivatives, anthraquinone derivatives, and fluorenone derivatives; (8-hydroxyquinoline) aluminum complexes (Aiq3); and other fluorescent organic metal compounds, poly-p-phenylacetylene (ppv ), Polyfluorene-based, polyvinyl carbazole (PVK) -based polymer materials, organic materials such as platinum complexes or iridium complexes that can utilize fluorescent light emission (Special Table 2001 — 520450). The light-emitting material may be an object consisting of only the above-mentioned light-emitting materials O: \ 92 \ 92316.DOC -18-200421917, and may also contain hole-transporting materials, electron-transporting materials, additives (donors, acceptors, etc. ) Or luminescent dopants, etc. In addition, these substances may be dispersed in a polymer material or an inorganic material. The sub-transport layer only needs to have a force b that transfers electrons injected from the cathode to the light-emitting layer, and the material can be selected from any conventionally known compounds. As a specific example, a nitrate group can be used instead of a fluorene derivative. , I.e., organic materials such as cinchona bio, biological complexes of metal derivatives, metal i-cyanine blue, etc. The above hole transporting layer, light emitting layer, and electron transporting layer can be spin-coated, It is formed by a wet process such as coating method, spray method, screen printing & etc., or a dry process such as vapor deposition method, laser transfer method, etc. [Various methods of organic EL panel] The organic EL element 12 may be The organic EL element with a single structure may also be an element having a desired pattern structure and constituting a plurality of pixels. If the latter is the case, the display mode may be monochromatic light emission, or two or more colors. The multi-color light-emitting organic EL panel, in particular, for achieving multi-color light emission, can be configured in the following manner to form two-color or more light-emitting devices including a method for forming three types of light-emitting functional layers corresponding to RGB. Optical function layer method (split coating method), white or blue monochromatic light-emitting function layer combined with color device or color conversion layer formed by fluorescent material (CCM method), through to monochromatic light-emitting functional layer The light-emitting area is irradiated with electromagnetic waves, etc. to achieve multi-color light emission (photofading method). In addition, the driving method of the organic device may be any of a passive driving method and an active driving method.

O: \ 92 \ 92316.DOC -19- ι / Brief Description of Drawings] Fig. 1 is an explanatory drawing of the prior art. Fig. 2 is an explanatory diagram illustrating a network organic EL panel according to an embodiment of the present invention. Fig. 3 is a diagram illustrating an organic EL panel according to another embodiment of the present invention. Fig. K is an explanatory diagram illustrating an organic panel according to another embodiment of the present invention. Fig. 5 is an explanatory diagram showing a schematic flow of a method for manufacturing an organic el panel according to the embodiment of the present invention. [Illustration of Symbols in the Drawings]! 〇, 20, 30 Organic EL panel 11 Supporting substrate 12 13, 21, 31 14 15 Organic EL element Sealing part Drying part Metering agent

15A 16, 21 Spacer 3 1, 41, 5 1 Sealing part

21A, 31A

31B Seal recess O: \ 92 \ 92316.DOC -20-

Claims (1)

20042l9l7 Patent application park: 1 * An organic EL panel, an organic EL element formed on a supporting substrate with an organic layer containing at least a light-emitting layer sandwiched between a pair of electrodes, and the organic EL element The EL element is a sealing member that is isolated from the outside air, and is characterized in that 'a colored drying member is provided on a surface of the sealing member opposite to the support substrate. 2. The organic EL panel according to item 1 of the scope of patent application, wherein the drying member is colored in a light-absorbing color. 3. The organic EL panel according to item 1 or 2 of the Shin-Ken patent scope, characterized in that the drying member is colored approximately black or approximately gray. 4_ The organic el panel according to any one of claims 1 to 3 in the scope of the patent application, wherein the drying member is a hygroscopic molded body, and the pigment is dispersed in the hygroscopic molded body. To perform the coloring. 5. The organic eL panel according to any one of claims 1 to 4, wherein the sealing member is a glass substrate. 6. · A method of manufacturing an organic EL panel, comprising an element forming step of forming an organic El element on a support substrate with a pair of electrodes sandwiching an organic layer containing at least a light emitting layer, and bringing the organic EL element and the outside air into contact The sealing step in which the isolated sealing member is adhered to the support substrate is characterized in that, before the sealing step, a colored drying member is mounted on a surface of the sealing member opposite to the support substrate. 7. The method for manufacturing an organic panel according to item 6 of the scope of patent application, wherein the dry member is colored with a light-absorbing color. 8. The method of manufacturing an organic panel as described in item 6 or 7 of the scope of the patent application: O: 92 / 92316.DOC 200421917 method, characterized in that the dried parts are colored approximately black or approximately gray. 9. The 'method' of the organic EL panel as described in ^ Patent_Items 6 ~ 8_Any- item, characterized in that the drying member is a hygroscopic molded body The pigment is internally dispersed to perform the coloring. 10. The method for manufacturing an organic el panel according to any one of claims 6 to 9, in which the sealing member is a glass substrate. O: \ 92 \ 92316.DOC 2-