WO2012120746A1

WO2012120746A1 - Organic el device

Info

Publication number: WO2012120746A1
Application number: PCT/JP2011/079197
Authority: WO
Inventors: 正人山名; 将啓中村; 山木　健之; 大貴加藤; 貴裕小柳
Original assignee: パナソニック株式会社
Priority date: 2011-03-10
Filing date: 2011-12-16
Publication date: 2012-09-13
Also published as: TW201240181A; JP2012190651A

Abstract

An organic EL device (1) is provided with: a first substrate (2) having conductivity; an organic layer (3) formed on the first substrate (2); an electrode layer (4) formed on the organic layer (3); and a second substrate (6) bonded to the electrode layer (4) with a bonding layer (5) therebetween. The electrode layer (4) has: a main electrode section (41) in contact with the organic layer (3); and an auxiliary electrode section (42), which extends on the further outer circumferential side than a region having the organic layer (3). The auxiliary electrode section (42) is in contact with the peripheral portion of the first substrate (2), said auxiliary electrode section being on the further outer circumferential side than the insulating layer (7). The first substrate (2) is divided on the lower surface side of the insulating layer (7), and one portion constitutes a first electrode lead out section (40a) in contact with the organic layer (3), and the other portion constitutes a second electrode lead out section (40b) in contact with the auxiliary electrode section (42). With such configuration, the electrode lead out sections can be formed by means of easy procedures of dividing the first substrate (2), and the device can be efficiently manufactured.

Description

Organic EL device

The present invention relates to an organic EL device in which an electrode extraction portion is formed.

An electroluminescence (EL) element is formed by forming a light emitting layer sandwiched between an anode and a cathode on a transparent substrate. When a voltage is applied between the electrodes, electrons and holes injected as carriers in the light emitting layer are formed. Light is emitted by excitons generated by recombination. EL elements are roughly classified into an organic EL element using an organic substance as a fluorescent material of a light emitting layer and an inorganic EL element using an inorganic substance. In particular, the organic EL element can emit light with high luminance at a low voltage, and various emission colors can be obtained depending on the type of fluorescent material. In addition, various types of organic EL elements can be easily manufactured as a flat light-emitting panel. Used as a display device or a backlight. Furthermore, in recent years, a device corresponding to high luminance has been realized and attention has been paid to using it for a lighting fixture.

In general organic EL elements, a transparent electrode such as ITO is formed on a glass substrate as an anode, and an organic layer including a light emitting layer made of an organic light emitting material is formed on the anode. On top, a metal thin film layer such as aluminum is formed as a cathode. Since the anode exists between the substrate and the organic layer, in order to connect the anode to the external power feeding terminal, a part of the anode or a part of the auxiliary electrode that assists the conductivity of the anode is formed in the organic layer. It extends outside the region, and this extended portion functions as an electrode extraction portion. The anode, the organic layer, and the cathode are sealed with a sealing member such as a copper foil except for the extraction electrode portion of the anode and a part of the cathode. According to this configuration, a voltage applied between the anode and the cathode and light generated in the light emitting layer is reflected directly or by the cathode, passes through the anode and the glass substrate, and is taken out of the device.

Unlike general LEDs (inorganic EL elements) in which the light-emitting layer is crystallized, the organic layer including the light-emitting layer of the organic EL element is made of an organic material such as a polymer. It can have. Some of these organic materials can form a light emitting layer by vacuum coating, spin coating, ink jet printing, screen printing, or the like. Further, the substrate is not limited to the glass substrate described above, and a light-transmitting plastic substrate having flexibility can also be used. By using these materials, the organic EL element can be used as a light source of a flexible light-emitting device that can be wound and bent. A so-called roll-to-roll system in which a flexible substrate wound in a roll shape is supplied to a film forming apparatus to form a light emitting layer and the like, and a device after film formation is wound in a roll shape and collected. Thus, a method for manufacturing an organic EL device is known (for example, see Japanese Patent Application Laid-Open No. 2010-165620: Patent Document 1).

However, Patent Document 1 does not specifically describe how to form the electrode extraction portion. Usually, in order to provide an electrode extraction part, it is necessary to pattern the anode and the light-emitting layer in a complicated shape. Even in the manufacturing method using the roll-to-roll method described above, the device is not necessarily manufactured efficiently. I could not.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an organic EL device that can easily form an electrode extraction portion and can be efficiently manufactured.

In order to solve the above problems, an organic EL device according to the present invention includes a first substrate having conductivity, an organic layer formed on the first substrate, and an electrode layer formed on the organic layer. And a second substrate bonded to the electrode layer through an adhesive layer, and the organic layer is not formed in any region of the peripheral portion of the first substrate, The electrode layer has a main electrode portion that contacts the organic layer, and an auxiliary electrode portion that is in contact with the main electrode portion and extends to an outer peripheral side from a region where the organic layer is present, and the auxiliary electrode The portion is insulated from the organic layer by an insulating layer formed on the first substrate, is in contact with a peripheral portion of the first substrate in a region on the outer peripheral side of the insulating layer, and The substrate is divided on the lower surface side of the insulating layer, and one of the substrates is in contact with the organic layer. Configure extraction portion and the other characterized in that it constitutes the second electrode extraction portion in contact with the auxiliary electrode portion.

In the organic EL device, it is preferable that an insulating sealing material is disposed between the first electrode extraction portion and the second electrode extraction portion.

In the organic EL device, the sealing material preferably contains a hygroscopic agent.

In the organic EL device, a moisture absorbing layer is formed on a surface of the second substrate facing the electrode layer so as not to overlap with a region where the organic layer is formed and so as not to contact the electrode layer. Is preferably provided.

In the organic EL device, the main electrode portion is preferably composed of a grid electrode in which thin wires having low resistance are arranged in a lattice shape, a line shape, or a honeycomb shape.

In the organic EL device, the first substrate is preferably made of a metal material having a barrier property.

According to the present invention, since one of the divided first substrates is used as the first electrode extraction portion and the other is the second electrode extraction portion, it is possible to perform them in a simple procedure such as dividing the first substrate. The organic EL device can be efficiently manufactured.

1 is an exploded perspective view of an organic EL device according to an embodiment of the present invention. The back view of the organic EL device. (A) is a side sectional view taken along line (A) or (D) in FIG. 2, (b) is a side sectional view taken along line (B) in FIG. 2, and (c) is a line (C) in FIG. FIG. The perspective view of the electrode extraction part of the organic EL device. (A) thru | or (c) are sectional side views which show the preparation procedures of the anode extraction part and cathode extraction part of the organic EL device.

A configuration of an organic EL device according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the organic EL device 1 of the present embodiment is formed on a first substrate 2 having conductivity, an organic layer 3 formed on the first substrate 2, and an organic layer 3. The electrode layer 4 and the second substrate 6 bonded to the electrode layer 4 through the adhesive layer 5 are provided. In the present embodiment, the first substrate 2 not only functions as a substrate for forming the organic layer 3 but also functions as a cathode extraction electrode for supplying electrons, as will be described later. It functions as an extraction electrode for the anode that supplies holes to the organic layer 3.

The organic layer 3 includes an electron injection layer 31, a light emitting layer 32, an electron block layer 33, and a hole injection layer 34 in this order from the first substrate 2 side. The electrode layer 4 includes a main electrode portion 41 that is in contact with the organic layer 3, an auxiliary electrode portion 42 that is in contact with the main electrode portion 41 and is insulated from the organic layer 3 by the insulating layer 7 formed on the first substrate. Is composed of. A moisture absorbing layer 8 is provided on the surface of the second substrate 6 facing the electrode layer 4 so as not to overlap with the region where the organic layer 3 is formed and so as not to contact the electrode layer 4.

The organic layer 3 is not formed on any side of the peripheral edge of the first substrate 2. In this example, the organic layer 3 is not formed in the portions indicated by the lines (B) and (C) in FIG. The region where the organic layer 3 is not formed may be provided on any of the four sides of the first substrate 2 and may not be provided over the entire length of one side. It may be provided (not shown). On the other hand, the organic layer 3 is formed to the end in the region on the outer peripheral side of the portion indicated by the lines (A) and (D) in FIG. 2 (see also FIG. 3A). In addition, in the manufacturing process of the organic EL device 1 of the present embodiment, when the organic layer 3 is formed on the first substrate 2 by the roll-to-roll method, the roll traveling direction is the line (A) in FIG. (D) Line direction. A holding member (not shown) that seals the organic layer 3 and the like and protects the side portion of the organic EL device 1 is provided on both sides including the portions indicated by the lines (A) and (D) in FIG. . This holding member may be provided on both sides including the portions indicated by the lines (B) and (C) in FIG.

In a part of the region where the organic layer 3 is not formed, that is, in this example, the part indicated by the line (C) in FIG. It extends (see FIG. 1). Further, as shown in FIG. 3C, the extended auxiliary electrode portion 42 is in contact with the peripheral portion of the first substrate 2 in a region on the outer peripheral side of the insulating layer 7 (left side in the drawing). The first substrate 2 is divided by the dividing groove 20 on the lower surface side of the insulating layer 7, one region constitutes a first electrode extraction portion 40 a in contact with the organic layer 3, and the other region is an auxiliary electrode portion. 2nd electrode extraction part 40b which contacts 42 is comprised. In this example, the 1st electrode extraction part 40a functions as an anode extraction electrode, and the 2nd electrode extraction part 40b functions as a cathode extraction electrode. An insulating sealing material 9 is disposed between the first electrode extraction portion 40 a and the second electrode extraction portion 40 b, that is, in the dividing groove 20. Further, the sealing material 9 includes a hygroscopic agent 8 ′. In addition, as shown in FIG.3 (b), the auxiliary electrode part 42 is not extended in the part shown by the (B) line which opposes the part shown by the (C) line of FIG. Except for the point where the end portion is not formed, the configuration is the same as the portion indicated by the line (A) or (D) in FIG. 2 (see FIG. 3A).

In the present embodiment, a configuration in which, in the first substrate 2, a region on one side of the peripheral portion is a first electrode extraction portion 40 a and the other region is a second electrode extraction portion 40 b is shown. However, in the first substrate 2, each region on both sides of the peripheral portion may be the first electrode extraction portion 40 a and the central region sandwiched between them may be the second electrode extraction portion 40 b. Good. In this case, as shown in FIG. 3C, the portion indicated by the line (B) in FIG. 2 is such that the auxiliary electrode portion 42 extends to the end, and the first substrate 2 is on the lower surface side of the insulating layer 7. Divided by.

As the first substrate 2, a sheet material made of a metal or an alloy such as aluminum, copper, stainless steel, nickel, tin, lead, gold, silver, iron or titanium is used, and the sheet material can be rolled up. Those having a certain degree of flexibility are preferred. The surface of the sheet material needs to have smoothness in order to suppress a short circuit of the element, and the surface roughness is preferably Ra 100 nm or less, and more preferably Ra 10 nm or less.

The first substrate 2 is preferably made of a metal material having a barrier property against moisture, gas, and the like. By so doing, it is possible to suppress deterioration of the organic layer 3 due to moisture, gas, or the like. Moreover, since the 1st board | substrate 2 functions as a cathode which supplies an electron to the organic layer 3, it is preferable to be comprised from the electrode material which consists of a metal, an alloy, a conductive compound, or these mixtures with a small work function.

Further, for the first substrate 2, a metal such as aluminum or silver, or a compound containing these metals can be used, and a layered structure or the like formed by combining aluminum and another electrode material is used. May be. Examples of such electrode material combinations include a laminate of an alkali metal and aluminum, a laminate of an alkali metal and silver, a laminate of an alkali metal halide and aluminum, and a laminate of an alkali metal oxide and aluminum. Body, alkaline earth metal or laminate of rare earth metal and aluminum, alloys of these metal species with other metals, and the like. Specifically, sodium, sodium-potassium alloy, laminate of lithium, magnesium, etc. and aluminum, magnesium-silver mixture, magnesium-indium mixture, aluminum-lithium alloy, lithium fluoride (LiF) / aluminum mixture / laminate And aluminum / aluminum oxide (Al ₂ O ₃ ) mixtures.

The electron injection layer 31 constituting the organic layer 3 includes the same material as that constituting the first substrate 2, a metal oxide such as titanium oxide and zinc oxide, and a dopant that promotes electron injection, including the above materials. An organic semiconductor material mixed with or the like is used. Further, as the light emitting layer 32, any material known as a light emitting material of the organic EL element is used. Examples of such luminescent materials include anthracene, naphthalene, pyrene, tetracene, coronene, perylene, phthaloperylene, naphthaloperylene, diphenylbutadiene, tetraphenylbutadiene, coumarin, oxadiazole, bisbenzoxazoline, bisstyryl, cyclopentadiene, quinoline. Metal complex, tris (8-hydroxyquinolinato) aluminum complex, tris (4-methyl-8-quinolinato) aluminum complex, tris (5-phenyl-8-quinolinato) aluminum complex, aminoquinoline metal complex, benzoquinoline metal complex , Tri- (p-terphenyl-4-yl) amine, pyran, quinacridone, rubrene, and derivatives thereof, or 1-aryl-2,5-di (2-thienyl) pyrrole derivatives, di Chirirubenzen derivatives, styryl arylene derivatives, styrylamine derivatives, and compounds or polymers such having a group consisting of these luminescent compound in a portion of the molecule. In addition to compounds derived from fluorescent dyes typified by the above compounds, so-called phosphorescent materials, for example, luminescent materials such as Ir complexes, Os complexes, Pt complexes, and europium complexes, or compounds having these in the molecule, or Polymers can also be suitably used. The light emitting layer 32 made of these materials may be formed by a dry process such as vapor deposition or transfer, or may be formed by application such as spin coating, spray coating, die coating, or gravure printing. .

The hole transport layer 33 can be selected from a group of compounds having hole transport properties, for example. Examples of this type of compound include 4,4′-bis [N- (naphthyl) -N-phenyl-amino] biphenyl (α-NPD), N, N′-bis (3-methylphenyl)-(1 , 1′-biphenyl) -4,4′-diamine (TPD), 2-TNATA, 4,4 ′, 4 ″ -tris (N- (3-methylphenyl) N-phenylamino) triphenylamine (MTDATA) 4,4'-N, N'-dicarbazole biphenyl (CBP), spiro-NPD, spiro-TPD, spiro-TAD, TNB, and the like, triarylamine compounds, amine compounds containing carbazole groups , Amine compounds containing a fluorene derivative, and the like, and any generally known hole transport material can be used. Examples include low molecular weight organic compounds such as talocyanine (CuPc), and organic materials including thiophene triphenylmethane, hydrazoline, arylamine, hydrazone, stilbene, triphenylamine, etc. Specifically, polyvinylcarbazole (PVCz), Polyethylenedioxythiophene: Polystyrene sulfonate (PEDOT: PSS), aromatic amine derivatives such as TPD, etc., the above materials may be used alone, or two or more materials may be used in combination.

For the main electrode portion 41 of the electrode layer 4, any material known as an anode material of an organic EL element can be used. Anode materials include silver, indium-tin oxide (ITO), indium-zinc oxide (IZO), tin oxide, nanowires of metals such as gold, nanoparticles containing nanodots, conductive polymers, conductive Organic material, dopant (donor or acceptor) -containing organic layer, and a mixture of a conductor and a conductive organic material (including a polymer), as long as it has conductivity and translucency, but is not limited thereto. . Further, a binder may be included in addition to the conductive substance. Binders include acrylic resin, polyethylene, polypropylene, polyethylene terephthalate, polymethyl methacrylate, polystyrene, polyethersulfone, polyarylate, polycarbonate resin, polyurethane, polyacrylonitrile, polyvinyl acetal, polyamide, polyimide, diacrylphthalate resin, and cellulose. Examples thereof include resins, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, other thermoplastic resins, and two or more copolymers of monomers constituting these resins.

Further, as shown in FIG. 4, the main electrode portion 41 may be composed of a so-called grid electrode 41 ′ in which thin wire materials 43 having low resistance are arranged in a lattice shape, a line shape, or a honeycomb shape. Good. The diameter of the fine wire 43 is preferably 100 μm or less so that the translucency of the main electrode portion 41 is hardly lowered. Further, in the case where the thin wire members 43 are arranged in a lattice shape as shown in the figure, the interval between the thin wire members 43 is set wide as long as the conductivity can be maintained, and preferably the aperture ratio is 90% or more. Is set as follows. Examples of the thin wire 43 include various metals and alloys such as silver, aluminum, copper, nickel, tin, lead, gold, and titanium, and conductive materials such as carbon. The grid electrode 41 ′ is formed by patterning the paste containing the metal or the conductive material on the organic layer 3 by screen printing, gravure coating, die coating or the like. The grid electrode 41 ′ is easy to form a film by coating, and is effective in efficiently manufacturing the organic EL device 1. These materials and forming methods are not particularly limited as long as they do not cause wettability to the organic layer 3 or damage to the organic layer 3.

The auxiliary electrode portion 42 is arranged in a frame shape so as to surround the periphery of the organic layer 3, and a part of the auxiliary electrode portion 42 is extended to the outer peripheral side from a region where the organic layer 3 is present as described above. This portion constitutes the first electrode extraction portion 40a. The auxiliary electrode portion 42 is formed by patterning on the insulating layer 7 so as to have the shape described above. If a highly transparent material is used for the main electrode portion 41 facing the light emitting layer 32 and a highly conductive material is used for the surrounding auxiliary electrode portion 42, the entire electrode layer 4 (anode layer) has translucency. High conductivity can also be achieved. The constituent material of the auxiliary electrode part 42 is not particularly limited as long as various metals used for general wiring electrodes are used and the electrical conductivity with the main electrode part 41 is good. Further, unlike the main electrode portion 41, it does not have to be translucent.

The adhesive layer 5 is a paste-like or sheet-like member made of a transparent resin material that is excellent in adhesiveness with the second substrate 6 and the electrode layer 4 and can transmit light emitted from the light emitting layer 32. The organic layer 3 and the electrode layer 4 are disposed so as to cover the periphery. Examples of the constituent material of the adhesive layer 5 include silicone resin, fluororesin, acrylic resin, polyethylene, polypropylene, polyethylene terephthalate, polymethyl methacrylate, polystyrene, and polyvinyl acetate.

The second substrate 6 is a transparent plate-like member formed in the same shape as the first substrate 2, and has a uniform plate thickness and surface smoothness. As a constituent material of the second substrate 6, for example, translucent glass such as soda lime glass or non-alkali glass, translucent resin material, or the like is used.

The insulating layer 7 has an inner circumference smaller than the inner circumference of the frame-shaped auxiliary electrode portion 42, an outer circumference larger than the outer circumference of the auxiliary electrode portion 42, and the auxiliary electrode portion 42 toward one outer circumference side. A pattern is formed in a frame shape so as to protrude. The insulating layer 7 is disposed on the first substrate 2 so that the inner periphery of the insulating layer 7 covers the outer periphery of the organic layer 3, and between the auxiliary electrode portion 42 provided on the insulating layer 7 and the organic layer 3. Ensure insulation. As a constituent material of the insulating layer 7, a thermosetting resin made of a thermosetting polyimide resin, an epoxy resin, or the like, or a thermoplastic resin such as polyethylene or polypropylene is formed by a wet process, or an oxidation such as silicon oxide or silicon nitride. And nitride can be formed by a dry process such as sputtering. In any process, patterning is necessary. In particular, as a wet process, the insulating layer 7 can be formed preferably by a method such as screen printing, die coating, spray coating, or gravure coating.

The moisture absorption layer 8 is formed by patterning a resin material containing a desiccant into a frame shape so that a region where the organic layer 3 is formed is opened, and preferably formed in a frame shape as illustrated. The insulating layer 7 is formed to have a larger inner periphery than the outer periphery. By providing the moisture absorbing layer 8, moisture that has slightly entered the adhesive layer 5 is blocked, so that deterioration of the organic layer 3 can be effectively suppressed. The constituent material of the moisture absorption layer 8 is, for example, a photo-curing adhesive resin made of epoxy resin, acrylic resin, silicone resin, etc., calcium oxide, barium oxide, sodium oxide, potassium oxide, sodium sulfate, calcium sulfate. , Magnesium sulfate, calcium chloride, magnesium chloride, copper chloride, magnesium oxide and the like added with a desiccant can be used. The moisture absorption layer 8 is preferably provided in advance on the surface of the second substrate 6 that faces the electrode layer 4 before the second substrate 6 and the electrode layer 4 are bonded.

The sealing material 9 fills the dividing groove 20 to insulate between the first electrode extraction portion 40a and the second electrode extraction portion 40b and physically maintain the positional relationship between them. As the material of the sealing material 9, the same material as that of the adhesive layer 5 may be used, but it is disposed outside the region where the organic layer 3 is formed and on the back side of the first substrate 2. A material different from the adhesive layer 5 that does not have translucency may be used.

Next, a procedure for forming the electrode extraction portion 40 will be described with reference to FIGS. As shown in FIG. 5A, an organic layer 3 is laminated on the first substrate 2, and an insulating layer 7, an auxiliary electrode portion 42, and a main electrode portion 41 are respectively predetermined on the organic layer 3. A pattern is formed in the shape of Hereinafter, a state in which the organic layer 3, the insulating layer 7, and the electrode layer 4 (auxiliary electrode portion 42 and main electrode portion 41) are formed on the first substrate 2 is referred to as a light emitting sheet 10. On the other hand, the moisture absorption layer 8 is provided on the second substrate 6 at a predetermined position on the surface facing the first substrate 2. The adhesive layer 5 is disposed so as to cover the auxiliary electrode portion 42 and the main electrode portion 41 as a whole, and the second substrate 6 is bonded to the light emitting sheet 10 by the adhesive layer 5. Next, as shown in FIG. 5B, the first substrate 2 is divided into two regions by digging a dividing groove 20 on the lower surface side of the insulating layer 7, and the first substrate 2 is divided into two regions. . The dividing groove 20 is filled with the sealing material 9, and the moisture absorbent 8 ′ is disposed along the dividing groove 20 so as to slightly protrude from the back surface side of the first substrate 2. The agent 8 ′ is also covered with the sealing material 9. By such a procedure, the organic EL device 1 including the first electrode extraction portion 40a and the second electrode extraction portion 40b is manufactured.

That is, in the organic EL device 1, since one of the divided first substrates 2 is the first electrode extraction portion 40a and the other is the second electrode extraction portion 40b, it is easy to form the division groove 20 or the like. They can be formed by simple procedures and can be manufactured efficiently. Moreover, the material which comprises the light emission sheet | seat 10 like the 1st board | substrate 2, the organic layer 3, the insulating layer 7, the auxiliary electrode part 42, and the main electrode part 41 can use a flexible material, The second substrate 6 may be either flexible or hard. That is, if the light emitting sheet 10 manufactured so as to have flexibility is bonded to an appropriate second substrate 6 having flexibility or rigidity, the light emitting sheet 10 having the same configuration can be used as a flexible type. Both of the organic EL device 1 and the hard type can be manufactured.

Moreover, the organic EL device 1 of the present embodiment can also use a strip-shaped sheet material supplied in a rolled state as the first substrate 2. In this case, the organic layer 3 is continuously formed on the surface of the band-shaped first substrate 2 by a slit coater or the like, and the insulating layer 7, the auxiliary electrode portion 42, and the main electrode portion 41 are respectively formed by screen printing or the like. It is formed at regular intervals, and after forming, it is rolled up and collected again. If it carries out like this, the light emitting sheet roll (not shown) in which the several light emitting sheet 10 was continuously formed can be produced by what is called a roll-to-roll system. Then, the light emitting sheet roll is bonded to a long second substrate 6 having the same width and the same length as the belt-shaped first substrate 2, thereby forming the divided grooves 20 as described above. After that, they are cut at regular intervals. In this way, many organic EL devices 1 as shown in FIG. 2 can be manufactured in a short time. In particular, in recent years, the organic layer 3 tends to be multi-layered, such as the multilayering of the light emitting layer 32 and the arrangement of the charge adjustment layer therebetween, and the formation of the organic layer 3 by the roll-to-roll method is as follows. Many organic layers composed of multiple layers as described above can be produced simultaneously.

In the present invention, there is a region without an organic layer in the peripheral portion of the substrate, and a part of the electrode layer disposed in this region is in contact with the substrate through the insulating layer, and the substrate is divided on the lower surface side of the insulating layer. Thus, it is sufficient that these function as electrode extraction portions. Therefore, the present invention is not limited to the above embodiment, and various modifications can be made. Note that the functions of the cathode and the anode described above can be reversed.

This application is based on Japanese Patent Application No. 2011-053235, the contents of which are incorporated into the present invention with reference to the specification and drawings of the above patent application.

1 Organic EL device 2 First substrate (cathode)
3 Organic layer 4 Electrode layer (anode)
40a Anode extraction part (second electrode extraction part)
40b Cathode extraction part (first electrode extraction part)
41 Main electrode portion 41 'Grid electrode 42 Auxiliary electrode portion 43 Fine wire material 5 Adhesive layer 6 Second substrate 7 Insulating layer 8 Hygroscopic layer 9 Sealing material

Claims

A first substrate having conductivity, an organic layer formed on the first substrate, an electrode layer formed on the organic layer, and a second bonded to the electrode layer via an adhesive layer And a substrate,
The organic layer is not formed in any region of the peripheral edge of the first substrate,
The electrode layer has a main electrode portion that comes into contact with the organic layer, and an auxiliary electrode portion that is in contact with the main electrode portion and extends to the outer peripheral side of a region where the organic layer is present,
The auxiliary electrode portion is insulated from the organic layer by an insulating layer formed on the first substrate, and is in contact with a peripheral portion of the first substrate in a region on the outer peripheral side than the insulating layer.
The first substrate is divided on the lower surface side of the insulating layer, one of which constitutes a first electrode extraction part in contact with the organic layer, and the other of which constitutes a second electrode extraction part in contact with the auxiliary electrode part An organic EL device characterized by that.
The organic EL device according to claim 1, wherein an insulating sealing material is disposed between the first electrode extraction portion and the second electrode extraction portion.
3. The organic EL device according to claim 2, wherein the sealing material contains a hygroscopic agent.
A moisture absorption layer is provided on a surface of the second substrate facing the electrode layer so as not to overlap with a region where the organic layer is formed and so as not to contact the electrode layer. The organic EL device according to any one of claims 1 to 3, wherein the organic EL device is characterized by.
The said main electrode part is comprised from the grid electrode which has arrange | positioned the thin wire material which has low resistance in the grid | lattice form, the line form, or the honeycomb form, The structure of any one of Claim 1 thru | or 4 characterized by the above-mentioned. The organic EL device as described.
The organic EL device according to any one of claims 1 to 5, wherein the first substrate is made of a metal material having a barrier property.