WO2012114618A1 - Dispositif électroluminescent (el) organique - Google Patents

Dispositif électroluminescent (el) organique Download PDF

Info

Publication number
WO2012114618A1
WO2012114618A1 PCT/JP2011/079202 JP2011079202W WO2012114618A1 WO 2012114618 A1 WO2012114618 A1 WO 2012114618A1 JP 2011079202 W JP2011079202 W JP 2011079202W WO 2012114618 A1 WO2012114618 A1 WO 2012114618A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
substrate
organic
electrode
electrode layer
Prior art date
Application number
PCT/JP2011/079202
Other languages
English (en)
Japanese (ja)
Inventor
将啓 中村
正人 山名
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 (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2012114618A1 publication Critical patent/WO2012114618A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals

Definitions

  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • a method of manufacturing an organic EL device is known (for example, see Japanese Patent Application Laid-Open No. 2010-165620 published in Japanese Patent Application).
  • Japanese Patent Application Laid-Open No. 2010-165620 disclosed in the above Japanese Patent Application does not specifically describe how to form the electrode extraction portion.
  • 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.
  • an organic EL device includes a first substrate having a first electrode layer and a smoothing layer for smoothing the first electrode layer, and a first substrate of the first substrate.
  • An organic layer formed on one electrode layer, a second substrate having translucency, and a second electrode layer formed on the second substrate, and the first substrate and The second substrate is bonded via an adhesive layer so that the organic layer and the second electrode layer are in contact with each other, and so that the first electrode layer and the second electrode layer are not in contact with each other.
  • the organic layer is not formed in any region of the peripheral edge of the first substrate, and the second electrode layer is in a portion corresponding to the region where the organic layer is not formed.
  • the organic layer is extended to the outer peripheral side from a region where the organic layer is present, and the first electrode layer is opposed to the extended second electrode layer.
  • a part of the substrate is folded back to the side opposite to the second substrate to form a first electrode extraction portion, and the extended second electrode layer is exposed from the first substrate.
  • the second electrode extraction portion is configured.
  • the first substrate preferably has a barrier layer on the surface of the smoothing layer opposite to the first electrode layer.
  • the adhesive layer is preferably provided on a peripheral edge of the first substrate or the second substrate.
  • the adhesive layer preferably includes a moisture absorption layer.
  • the electrode layer includes a main electrode part in contact with the organic layer and an auxiliary electrode part in contact with the main electrode part and insulated from the organic layer.
  • the electrode layer of the electrode extraction part is preferably a part of the auxiliary electrode part.
  • the first electrode extraction portion is sealed with a sealing material except for a part of the first electrode layer.
  • a part of the sealing material is a member in which the adhesive layer is extended.
  • the sealing material is preferably a separate member from the adhesive layer.
  • the second electrode layer extending in a portion corresponding to the region where the organic layer of the second substrate is not formed is exposed from the first substrate to become the second electrode extraction portion, Further, the first electrode layer provided on the first substrate is exposed on the back side of the first substrate and becomes a first electrode extraction portion. Therefore, the first electrode extraction portion and the second electrode extraction portion can be formed by a simple procedure such as turning back the first substrate 2 facing the extended second electrode layer. It can be manufactured efficiently.
  • FIG. 1 is an exploded perspective view of an organic EL device according to an embodiment of the present invention.
  • (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
  • (c) is a line (C) in FIG. FIG.
  • or (c) is a sectional side view which shows the preparation procedure of the anode extraction part and cathode extraction part of the organic EL device.
  • or (c) is a sectional side view which shows the other preparation procedure of the anode extraction part of the organic EL device, and a cathode extraction part.
  • the organic EL device 1 of the present embodiment includes a first substrate 2, an organic layer 3 formed on the first substrate 2, and a second substrate 6 having translucency. And an anode layer 4 which is formed on the second substrate 6 and supplies holes to the organic layer 3.
  • the first substrate 2 is provided on a surface of the cathode layer 21 that supplies electrons to the organic layer 3, a smoothing layer 22 that smoothes the cathode layer 21, and a surface of the smoothing layer 22 opposite to the cathode layer 21.
  • Barrier layer 23 formed.
  • the first substrate 2 and the second substrate 6 are bonded via the adhesive layer 5 so that the organic layer 3 and the anode layer 4 are in contact with each other, and the cathode layer 21 and the anode layer 4 are not in contact with each other.
  • the cathode layer 21 is the first electrode layer
  • the anode layer 4 corresponds to the second electrode layer.
  • the organic layer 3 includes an electron injection layer 31, a light emitting layer 32, a hole transport layer 33, and a hole injection layer 34 in this order from the first substrate 2 side.
  • the anode layer 4 includes a main electrode portion 41 that is in contact with the organic layer 3, and 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.
  • the adhesive layer 5 includes a moisture absorption layer 8, and the moisture absorption layer 8 is sandwiched between the first substrate 2 and the second substrate 6 so as to be located on the outer periphery of the insulating layer 7.
  • the organic layer 3 is not formed on any side of the peripheral edge of the first substrate 2.
  • 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).
  • the organic layer 3 is formed up to the end portions in the portions indicated by the lines (A) and (D) in FIG. 2 (see also FIG. 3A).
  • the roll traveling direction is the line (A) in FIG.
  • 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.
  • the auxiliary electrode portion 42 is formed in any portion corresponding to the region where the organic layer 3 is not formed, that is, in this example, the portion indicated by the line (B) in FIG. 2. It extends to the outer peripheral side from a certain region (see FIG. 1). Then, a part of the first substrate 2 facing the extended auxiliary electrode portion 42 is folded back to the opposite side to the second substrate 6 as shown in FIGS.
  • the cathode extraction part 40b is configured by being exposed on the back side of the first substrate 2. At this time, the extended auxiliary electrode portion 42 is exposed on the back surface side of the first substrate 2 to constitute the anode extraction portion 40a.
  • the cathode extraction portion 40b When the cathode extraction portion 40b is the first electrode extraction portion, the anode extraction portion 40a corresponds to the second electrode extraction portion. As shown in FIG. 3C, the auxiliary electrode portion 42 is not extended in the portion indicated by the line (C) in FIG. In the present embodiment, an example in which the anode extraction portion 40a and the cathode extraction portion 40b are each formed at one location is shown, but two or more locations may be provided.
  • the cathode extraction part 40b is sealed by the sealing material 9 except for a part of the cathode layer 21, and the unsealed part is exposed on the back side of the first substrate 2 as shown in FIG. .
  • the exposed auxiliary electrode portion 42 and a part of the cathode layer 21 are electrically connected to an external power supply terminal or the like. In addition, the formation procedure of these anode extraction part 40a and cathode extraction part 40b is mentioned later.
  • 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. Is preferably flexible enough to roll up.
  • the cathode layer 21 is preferably composed of an electrode material made of a metal, an alloy, a conductive compound, or a mixture thereof having a low work function.
  • 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 cathode layer 21 can be made of a metal such as aluminum or silver, or a compound containing these metals, and a layered structure or the like formed by combining aluminum and another electrode material can be used.
  • a metal such as aluminum or silver, or a compound containing these metals, and a layered structure or the like formed by combining aluminum and another electrode material can be used.
  • 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 (
  • thermosetting polyimide resin epoxy resin, phenol resin, melamine resin, urea resin, unsaturated polyester resin, alkyd resin, polyurethane, etc., polyethylene, polypropylene, poly Thermoplastic resins such as vinyl chloride, polyvinylidene chloride, polystyrene, polyvinyl acetate, ABS resin, AS resin, acrylic resin, and resins such as polyamide, nylon, polyacetal, polycarbonate, modified polyphenylene ether, polybutylene terephthalate, polyethylene terephthalate, etc. Is used.
  • the cathode layer 21 can be smoothed by applying a solution containing the resin on a metal foil or bonding the resin to a sheet material constituting the cathode layer 21 by heating lamination. Since the first substrate 2 is smoothed by the smoothing layer 22, it becomes easy to finish the organic layer 3 formed on the first substrate 2 into a uniform film by a method such as coating. An EL device with uniform resistance and less luminance unevenness can be realized.
  • the barrier layer 23 is made of a resin or metal material having a barrier property against moisture, gas, or the like, and a general-purpose barrier film or an uneven metal foil is used.
  • the barrier layer 23 can suppress the penetration of moisture, gas, and the like into the smoothing layer 22 and the cathode layer 21, and can suppress deterioration of the organic layer 3 due to the moisture, gas, and the like. .
  • the electron injection layer 31 constituting the organic layer 3 a material common to the material constituting the cathode layer 21, a metal oxide such as titanium oxide and zinc oxide, and a dopant for promoting electron injection are mixed.
  • the organic semiconductor material etc. which were made are used.
  • the light emitting layer 32 any material known as a light emitting material of the organic EL element is used.
  • 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.
  • 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.
  • this type of compound include 4,4′-bis [N- (naphthyl) -N-phenyl-amino] biphenyl ( ⁇ -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, and 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.
  • organic materials including thiophene triphenylmethane, hydrazoline, arylamine, hydrazone, stilbene, triphenylamine, etc.
  • PVCz polyvinylcarbazole
  • PEDOT Polystyrene sulfonate
  • aromatic amine derivatives such as TPD, etc.
  • 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. .
  • 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.
  • the main electrode portion 41 may be composed of a so-called grid electrode 41 ′ in which thin wires 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 ⁇ m or less so that the translucency of the main electrode portion 41 is hardly lowered.
  • 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 opposing organic layer 3, and in the portion corresponding to the region where the organic layer 3 is not formed, between the cathode layer 21 and the insulating layer 7. And extending from the region having the organic layer to the outer peripheral side. And this extended part comprises the anode extraction part 40a.
  • the auxiliary electrode portion 42 is formed by patterning on the second substrate 6 so as to have the shape described above, and the insulating layer 7 is disposed on the portion of the auxiliary electrode portion 42 that has a frame shape.
  • the anode layer 4 as a whole has high translucency, In addition, the conductivity can be increased.
  • 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 disposed so that a paste-like or sheet-like member made of a resin material excellent in adhesiveness with the first substrate 2 and the insulating layer 7 covers the periphery of the organic layer 3 and the anode layer 4.
  • 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.
  • translucent glass such as soda lime glass or non-alkali glass, translucent resin material, or the like is used.
  • the insulating layer 7 is formed in a pattern so as to be substantially similar to the frame-like portion of the auxiliary electrode portion 42 and wider than the auxiliary electrode portion 42.
  • the insulating layer 7 is patterned so that the inner periphery thereof is larger than the outer periphery of the organic layer 3, thereby ensuring insulation between the auxiliary electrode portion 42 and the organic layer 3.
  • 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.
  • nitride can be formed by a dry process such as sputtering. In any process, patterning is necessary.
  • the insulating layer 7 can be formed preferably by a method such as screen printing, die coating, spray coating, or gravure coating.
  • the moisture absorbing 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. 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 hygroscopic layer 8 may be provided in advance on the surface of the second substrate 6 facing the first substrate 2 before the second substrate 6 and the first substrate 2 are bonded. preferable.
  • the sealing material 9 includes a base-side sealing portion 91 that seals a region from the exposure of the auxiliary electrode portion 42 to the folding position of the cathode extraction portion 40b, the cathode layer 21 in the first electrode extraction portion 40, and a smoothing layer. 22 and an end sealing portion 92 that seals the end of the barrier layer 23 (see FIG. 3B).
  • the base-side sealing portion 91 is obtained by extending a part of the adhesive layer 5 that joins the first substrate 2 and the second substrate 6.
  • the end sealing portion 92 serves to seal the end portion and to bond the end portion to the barrier layer 23 of the first substrate 2.
  • the cathode extraction part 40b is sealed by the sealing material 9 except for a part of the cathode layer 21, so that moisture or the like hardly enters the device and suppresses the deterioration of the organic layer 3. be able to.
  • the sealing material 9 may be a separate member from the adhesive layer 5.
  • the same material as that of the adhesive layer 5 is used.
  • the sealing material 9 is arrange
  • an organic layer 3 is laminated as shown in FIG.
  • the auxiliary electrode portion 42, the main electrode portion 41, and the insulating layer 7 are patterned in a predetermined shape.
  • the first substrate 2 and the second substrate 6 are arranged so that the organic layer 3 and the anode layer 4 (main electrode portion 41) are in contact with each other, and the second substrate.
  • a moisture absorbing layer 8 is provided at a predetermined position 6, and these are bonded and fixed by the adhesive layer 5.
  • the adhesive layer 5 is arranged so as to partially cover the proximal end side of the extended auxiliary electrode portion 42 and not to cover the distal end side.
  • the auxiliary electrode portion 42 and the insulating layer 7 are configured in a frame shape (see FIG. 1), and the auxiliary electrode portion 42 and the insulating layer 7 are laminated so as to be thicker than the other portions. It functions as a dam that blocks the inflow to the layer 3 side.
  • end sealing portions 92 are provided at the ends of the cathode layer 21, the smoothing layer 22, and the barrier layer 23, and the first substrate 2 is formed as shown in FIG.
  • the second substrate 6 is folded back to the opposite side and fixed to the back surface (barrier layer 23) of the second substrate 6 by the end sealing portion 92. If the adhesive layer 5 partially covered on the base end side of the extended auxiliary electrode part 42 is used for the base side sealing part 91, the process of applying the sealing material 9 can be partially simplified. it can. Through the above procedure, the extended auxiliary electrode portion 42 is exposed, the anode extraction portion 40a is formed, and the cathode layer 21 of the first substrate 2 facing the extended auxiliary electrode portion 42 is A cathode extraction part 40b is formed exposed on the back side of the first substrate 2.
  • the organic EL device 1 can easily form the anode extraction portion 40a and the cathode extraction portion 40b by folding back the first substrate 2 facing the extended auxiliary electrode portion 42, it is efficient. Can be manufactured. Moreover, in the first substrate 2, even when the resin smoothing layer 22 is used on the back surface side of the cathode layer 21, the cathode extraction portion 40 b can be extracted on the back surface side of the first substrate 2. Moreover, the material which comprises the 1st board
  • the organic layer 3 having the same configuration is used. Using the attached first substrate 6, both the flexible type and the hard type organic EL device 1 can be manufactured.
  • 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.
  • the organic layer 3 is continuously formed on the surface of the belt-shaped first substrate 2 by a slit coater or the like, and after the formation, it is wound up and collected again in a roll shape.
  • the sheet roll (not shown) which consists of the 1st board
  • the first substrate 2 is removed to form the anode extraction portion 40a and the cathode extraction portion 40b.
  • 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.
  • FIGS. 7 (a) to (c) a procedure different from the above-described procedure for forming the anode extraction portion 40a will be described with reference to FIGS. 7 (a) to (c).
  • the adhesive layer 5 is arranged so as not to extend to a part of the anode extraction portion 40a, and the first substrate 2 and the second substrate 6 are joined (FIG. 7A).
  • a portion corresponding to the anode extraction portion 40a is folded back (FIG. 7B), and after the folding, the cathode extraction portion 40b is sealed and fixed with a sealing material 9 ′ different from the adhesive layer 5 (FIG. 7). 7 (c)).
  • the portion corresponding to the cathode extraction portion 40b can be folded back. It becomes difficult to form a gap between the electrode portion 42 and the entry of moisture or the like into the adhesive layer 5 can be suppressed.
  • the organic layer is not formed on any of the peripheral portions of the substrate, and a part of the electrode layer disposed in this region is folded back to be exposed as an electrode extraction portion.
  • transformation is possible.
  • the functions of the cathode and the anode described above can be reversed. . That is, the first substrate 6 side can function as an anode layer, and the main electrode portion 41 and auxiliary electrode portion 42 side can function as a cathode layer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne un dispositif électroluminescent (EL) organique (1) qui comporte un premier substrat (2) qui a une couche d'électrode négative (21) et une couche lissée (22), une couche organique (3) formée sur la couche d'électrode négative (21), un second substrat (6) qui présente une transparence, et une couche d'électrode positive (4) formée sur le second substrat (6). La couche d'électrode positive (4) s'étend dans une partie correspondant à une région d'une partie périphérique du second substrat (6) où la couche organique (3) n'est pas formée. Le premier substrat (2), tourné vers la couche d'électrode positive étendue (4), est replié sur le côté opposé au second substrat (6). Conjointement avec une partie d'extraction d'électrode négative (40b) qui est constituée, la couche d'électrode positive étendue (4) est exposée à l'extérieur du premier substrat (2) et constitue une partie d'extraction d'électrode positive (40a). Conformément à cette structure, la partie d'extraction d'électrode positive (40a) et la partie d'extraction d'électrode négative (40b) peuvent être formées aisément par repli du premier substrat (2) tourné vers la couche d'électrode positive étendue (4) et le dispositif peut être fabriqué de manière efficace.
PCT/JP2011/079202 2011-02-23 2011-12-16 Dispositif électroluminescent (el) organique WO2012114618A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011037447A JP2012174607A (ja) 2011-02-23 2011-02-23 有機ｅｌデバイス
JP2011-037447 2011-02-23

Publications (1)

Publication Number Publication Date
WO2012114618A1 true WO2012114618A1 (fr) 2012-08-30

Family

ID=46720420

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/079202 WO2012114618A1 (fr) 2011-02-23 2011-12-16 Dispositif électroluminescent (el) organique

Country Status (3)

Country Link
JP (1) JP2012174607A (fr)
TW (1) TW201244202A (fr)
WO (1) WO2012114618A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6300231B2 (ja) * 2014-06-25 2018-03-28 パナソニック株式会社 有機ｅｌ素子
JP7206633B2 (ja) * 2018-05-16 2023-01-18 凸版印刷株式会社 調光ユニット

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07130472A (ja) * 1993-11-04 1995-05-19 Nippondenso Co Ltd エレクトロルミネッセンス素子
JPH09129369A (ja) * 1995-10-31 1997-05-16 Nippon Seiki Co Ltd 電界発光素子及びその製造方法
JP2007280693A (ja) * 2006-04-04 2007-10-25 Koizumi Lighting Technology Corp Ｅｌ光源体
JP2011034066A (ja) * 2009-07-07 2011-02-17 Semiconductor Energy Lab Co Ltd 表示装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07130472A (ja) * 1993-11-04 1995-05-19 Nippondenso Co Ltd エレクトロルミネッセンス素子
JPH09129369A (ja) * 1995-10-31 1997-05-16 Nippon Seiki Co Ltd 電界発光素子及びその製造方法
JP2007280693A (ja) * 2006-04-04 2007-10-25 Koizumi Lighting Technology Corp Ｅｌ光源体
JP2011034066A (ja) * 2009-07-07 2011-02-17 Semiconductor Energy Lab Co Ltd 表示装置

Also Published As

Publication number Publication date
JP2012174607A (ja) 2012-09-10
TW201244202A (en) 2012-11-01

Similar Documents

Publication Publication Date Title
WO2012114616A1 (fr) Dispositif électroluminescent (el) organique
JP5112707B2 (ja) 有機エレクトロルミネッセンス発光装置
JP5842089B2 (ja) 有機ｅｌデバイス
WO2013168619A1 (fr) Dispositif el organique et son procédé de fabrication
JPWO2011074633A1 (ja) 有機エレクトロルミネッセンス素子
JP5613590B2 (ja) 有機ｅｌデバイス
WO2012121254A1 (fr) Dispositif d'émission de lumière plan et son procédé de fabrication
WO2013146350A1 (fr) Appareil d'émission de lumière et procédé de fabrication d'appareil d'émission de lumière
WO2016013160A1 (fr) Dispositif électroluminescent
WO2012114618A1 (fr) Dispositif électroluminescent (el) organique
WO2012121249A1 (fr) Dispositif électroluminescent plat
JP5842088B2 (ja) 有機ｅｌデバイス及び有機ｅｌデバイスの製造方法
WO2012121251A1 (fr) Dispositif d'émission de lumière plan
WO2012120746A1 (fr) Dispositif el organique
JP2012212555A (ja) 発光装置
JP2013030335A (ja) 有機エレクトロルミネッセンス素子
WO2012132823A1 (fr) Dispositif électroluminescent

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11859248

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11859248

Country of ref document: EP

Kind code of ref document: A1