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WO2018138161A1 - Composant électroluminescent organique et procédé de fabrication d'un composant électroluminescent organique - Google Patents

Composant électroluminescent organique et procédé de fabrication d'un composant électroluminescent organique Download PDF

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Publication number
WO2018138161A1
WO2018138161A1 PCT/EP2018/051745 EP2018051745W WO2018138161A1 WO 2018138161 A1 WO2018138161 A1 WO 2018138161A1 EP 2018051745 W EP2018051745 W EP 2018051745W WO 2018138161 A1 WO2018138161 A1 WO 2018138161A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
electrical contact
functional layer
layer stack
organic functional
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2018/051745
Other languages
German (de)
English (en)
Inventor
Richard Baisl
Philipp SCHWAMB
Simon SCHICKTANZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram Oled GmbH
Original Assignee
Osram Oled GmbH
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 Osram Oled GmbH filed Critical Osram Oled GmbH
Publication of WO2018138161A1 publication Critical patent/WO2018138161A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes

Definitions

  • the invention relates to em organic light emitting device. Furthermore, the invention relates to a method for producing an organic light-emitting
  • Organic light-emitting components such as organic light-emitting diodes (OLED) generally have a cathode as a second electrode, which is mechanically connected directly to an electrical contact.
  • the cathode is at least in some areas above the organic
  • Another object to be solved is to overcome the above-mentioned disadvantages.
  • Another object to be achieved is to provide an organic light-emitting device that is faster, simpler and / or
  • This task or these tasks are by a
  • the organic light emitting device comprises a substrate.
  • the device has a first electrode overlying the substrate
  • the component has an electrical
  • the electrical contact is arranged next to the first electrode.
  • the electrical contact is arranged next to the first electrode.
  • electrical contact is for contacting a second
  • the component has at least one organic functional layer stack.
  • the organic functional layer stack is adapted to emit radiation.
  • the device has the second electrode disposed over the organic functional layer stack.
  • the organic light emitting device comprises a substrate.
  • the device has a first electrode overlying the substrate
  • the component has an electrical
  • the electrical contact is arranged next to the first electrode.
  • the electrical contact is arranged next to the first electrode.
  • Electrode is set up or used, wherein the second electrode is not directly connected to the electrical contact
  • the component has at least one
  • the organic functional layer stack on.
  • the organic functional layer stack is adapted to emit radiation.
  • the organic functional layer stack is arranged at least over the first electrode.
  • the organic functional layer stack is at least partially disposed over the electrical contact.
  • the device has the second electrode disposed over the organic functional layer stack.
  • the organic light emitting device is formed as an organic light emitting diode (OLED).
  • OLED organic light emitting diode
  • the organic light-emitting component has a substrate.
  • the substrate may for example comprise one or more materials in the form of a layer, a plate, a foil or a laminate, which are selected from glass, quartz, plastic, metal, silicon wafer, ceramic, coated paper.
  • the substrate comprises or is glass, for example in the form of a glass layer, glass sheet or glass plate.
  • the organic light-emitting component has a first and a second electrode on.
  • at least one electrode may be transparent.
  • a layer is called, which is permeable to visible light.
  • the transparent layer can be transparent or at least partially light-scattering and / or partially light-absorbing, so that the transparent layer can also be translucent, for example, diffuse or milky.
  • a layer designated here as transparent as possible is translucent, so that in particular the absorption of during operation of the organic
  • Light-emitting device in the organic functional layer stack generated light is as low as possible.
  • both electrodes can be transparent
  • the organic light generated in the at least one organic functional layer stack can be radiated in both directions, ie through both electrodes.
  • the light-emitting component having a substrate, this means that light can be emitted both through the substrate, which is then likewise transparent, and in the direction away from the substrate.
  • Component forms a transparent OLED.
  • one of the two electrodes, between which the organic functional layer stack is arranged may also be possible for one of the two electrodes, between which the organic functional layer stack is arranged, to be non-transparent and preferably
  • the arranged on the substrate electrode is transparent and is Also, the substrate formed transparent, so it is also called a so-called bottom emitter, while in the case that the electrode arranged facing away from the electrode is transparent, speaks of a so-called top emitter.
  • TCO transparent, conductive oxide
  • Transparent Conductive Oxide such as ITO
  • TCO Transparent, electrically conductive oxides
  • metal oxides such as zinc oxide, tin oxide
  • ITO indium oxide
  • AZO aluminum zinc oxide
  • Metal oxygen compounds such as ZnO, SnO 2 or ⁇ 2 ⁇ 3 also include ternary metal oxygen compounds such as Zn 2 SnO 2, Cd Sn 3, Zn SnO 3, Mngln 20zi, GalnO 3, 2 ⁇ or In 4 Sn 30, 2 or mixtures of different transparent, conductive oxides into the group of TCOs.
  • TCOs do not necessarily correspond to one
  • stoichiometric composition and may also be p- or n-doped.
  • a transparent electrode may also be a
  • the metal layer has such a small thickness that it is at least partially permeable to that of the organic functional Layer stack generated light is, for example, a thickness of less than or equal to 50 nm.
  • a metal may be used, which may be selected from aluminum, barium, indium, silver, gold,
  • a reflective electrode may comprise silver, aluminum or alloys with these, for example Ag: Mg, Ag: Ca, Mg: Al.
  • the electrodes may be nanostructured
  • Electrodes such as silver nanowires, or out
  • the first electrode may be formed as an anode, then the second electrode is formed as a cathode.
  • the first electrode may be formed as a cathode, then the second electrode is formed as an anode.
  • the electrodes may also be in combination of at least one or more TCO layers and at least one or more metal layers.
  • at least one organic functional layer stack is arranged above the first electrode and / or the substrate.
  • the fact that a layer or a stack is arranged or applied "on" or “above” another layer or stack may mean here and below that the one layer or a stack directly in direct mechanical and / or electrical contact the other layer is arranged.
  • the organic light-emitting component has at least one organic functional layer stack.
  • the organic light emitting device has exactly one
  • a wavelength of the radiation or the wavelength maximum is preferably in the infrared and / or ultraviolet
  • Wavelengths between 420 nm and 680 nm inclusive Wavelengths between 420 nm and 680 nm inclusive.
  • the organic functional layer stack may include layers of organic polymers, organic oligomers,
  • organic monomers organic small non-polymeric molecules ("small molecules") or combinations thereof.
  • the organic functional layer stack may additionally have further functional layers, which are designed as a hole transport layer, in order to achieve an effective
  • the organic functional layer stack can furthermore have at least one functional layer which can be used as a
  • Electron transport layer is formed.
  • the organic functional layer stack may be additional Have layers that are selected from
  • Electron injection layers electron transport layers, hole blocking layers and electron blocking layers.
  • organic functional layer stack completely or at least predominantly organic functional layers.
  • individual layers of the organic functional layer stack also comprise or are formed from inorganic materials.
  • the organic light-emitting component has at least one conductive one
  • the component has an electrical contact.
  • the electrical contact is arranged next to the first electrode.
  • the electrical contact is arranged laterally spaced from the first electrode. Between electrical contact and first
  • the electrode is the organic functional one
  • the electrical contact serves for contacting the second electrode.
  • the electrical contact is an electrical conductor structure which is arranged on the substrate and serves for the indirect contacting of the second electrode.
  • the electrical contact is made of a metal.
  • the electric Contact also have a layer structure.
  • the electrical contact may comprise three layers of two or three different metals.
  • the electrical contact has a layer structure chromium-aluminum-chromium or molybdenum-aluminum-molybdenum or titanium-aluminum-titanium.
  • the electrical contact comprises at least one metal or an alloy
  • the metal or alloy of the electrical contact is selected from a group comprising silver, aluminum, molybdenum, chromium, copper, magnesium or an alloy of molybdenum-aluminum, chromium-aluminum, silver-magnesium and combinations thereof.
  • the electrical contact is formed from silver and / or aluminum.
  • the organic functional layer stack is formed as an insulating layer and arranged between the first and second electrodes.
  • a short circuit between the first electrode and the second electrode is avoided by the arrangement of the organic functional layer stack by the device described here.
  • the organic functional layer stack extends to the electrical contact. The electrical contact and the second electrode are then electrically connected to one another via a so-called current path.
  • the organic electrode is between the first electrode and the electrical contact
  • the organic functional layer stack covers at least partially or
  • the electrical contact upon partial coverage of the electrical contact with the organic functional layer stack, the electrical contact has uncovered areas.
  • Uncovered areas can be used for external power supply.
  • a current path or a plurality of current paths is formed between the second electrode and the electrical contact within the organic functional layer stack.
  • the current path can be generated by means of a laser.
  • the laser has a wavelength from the IR range.
  • the laser has a wavelength of 1064 nm with a tolerance range of 10%, 5%, 3%, 1% or 0.5% of this value. It can be generated while rungs, the one
  • the current path is a microvia.
  • Microvias here and below are small holes which are arranged between the electrical contact and the second electrode. The microvias electrically connect the electrical contact and the second electrode. A microvia is through one
  • the microvia serves for contacting the second electrode.
  • the microvia is generated for example by means of a laser. In this case, the vapor-deposited second electrode is melted.
  • Microvias are formed in particular metallic.
  • the current path is formed and filled both on the side surfaces in the entire diameter with the material of the second electrode.
  • the inventors have recognized that advantageous properties of the organic light-emitting component can be produced if the second electrode is not contacted directly with an electrical contact, but that both elements are connected via a current path of the organic
  • Component can be easily manufactured as no
  • Layer stacks take place.
  • a plurality of organic light-emitting components for example, in one
  • Wafer bond are generated and then contacted differently. It is here so the device by means of a current path, in particular a microvia, between the second electrode and the substrate or the electrical
  • the invention further relates to a method for producing an organic light-emitting component.
  • the device described here is produced by the method described here.
  • the same definitions and embodiments as above for the organic light emitting device also apply to the
  • the method comprises the method steps:
  • Electrode is arranged and arranged on the substrate,
  • step C) is carried out over the entire surface of the organic functional layer stack on the first electrode.
  • the organically functional layer stack is applied over the whole area both to the first electrode and to the electrical contact. Subsequently, the second electrode
  • step D) can be applied, as described in step D), or the organic functional layer stack as described in step E) can then be restructured.
  • step E) can take place.
  • step E) can take place in a structured manner. So the second electrode will not work
  • the second electrode can be evaporated.
  • the current path is generated by means of a laser.
  • the current path extends from the second electrode to the electrical contact and creates an electrical connection between the two elements.
  • the laser has a wavelength from the IR range.
  • the laser has a wavelength of 1064 nm with a tolerance of 10 ⁇ 6 of this value.
  • the current path is formed as a microvia. Additionally or alternatively, the current path in plan view a diameter or
  • the current path is generated by melting the second electrode.
  • the second electrode vapor-deposited on the organically functional layer stack is melted by means of a laser.
  • the second is
  • the molten material of second electrode preferably a metal as material, penetrates the underlying organic functional layer stack. This generates a current path which locally establishes an electrical connection between the second electrode and the electrical contact.
  • FIG. 1 shows a schematic side view of an organic light-emitting component according to an embodiment
  • FIGS. 2A to 2F show a method for producing an organic light-emitting component according to FIG.
  • the organic light emitting device 100 is here as an organic light emitting light emitting diode (OLED) formed.
  • the device 100 has a substrate 1.
  • the substrate 1 may be made of glass, for example.
  • a first electrode 2, for example, the anode be applied.
  • an electrical contact 3 Spaced laterally to the first electrode 2, an electrical contact 3 can be arranged.
  • the electrical contact 3 may for example consist of a
  • the electrical contact 3 serves for contacting the second electrode 6.
  • an organic functional layer stack 5 is arranged above the first electrode 2.
  • the organic functional layer stack 5 is for emitting radiation
  • the organic functional layer stack 5 does not only extend beyond the first one here
  • Electrode 2 but in addition at least partially over the electrical contact 3.
  • the electrical contact 3 the
  • organic functional layer stacks 5 also extend completely over the electrical contact 3. Should the organic functional layer stack 5 extend completely over the electrical contact 3, the organic functional layer stack 5 can also be restructured in regions above the electrical contact. This can be done for example by means of a mask.
  • the second electrode 6 is arranged on the organic functional layer stack 5, the second electrode 6 is arranged.
  • the electrical contact 3 and the second electrode 6 are electrically connected to one another via at least one current path 4, here shown by the example of two current paths 4.
  • the current path 4 is preferably formed as a microvia.
  • the organic functional layer stack 5 extends not only via the first electrode 2 but also via the electrical contact 3.
  • the organic functional layer stack 5 functions here as a so-called insulation layer between the first and the second Electrode.
  • the second electrode 6 and the electrical contact 3 are here not directly electrically or directly mechanically connected to each other, but between the electrical contact 3 and the second electrode 6, the organic functional layer stack 5 is arranged, within which the electrical current path 4 is or is generated.
  • Electrode 6 Over the first electrode 2 and the electrical contact 3, an organic functional layer stack 5 is applied.
  • the application of the organic functional layer stack 5 preferably takes place over the whole area (FIG. 2C).
  • both the first electrode 2 and the electrical contact 3 are completely from the
  • organic functional layer stack 5 covered.
  • the second electrode 6, in particular directly and / or structured, can be applied, and then the organic functional layer stack 5
  • Power supply can serve ( Figure 2D).
  • At least one current path 4 can be generated between the second electrode 6 and the electrical contact 3 in the organic functional layer stack 5.
  • the second electrode 6 can be irradiated by means of a laser, and thus the metal of the second electrode
  • the molten metal can penetrate the underlying organic functional layer stacks 5 and thus locally produce an electrical connection between the second electrode 6 and the electrical contact 3. Not of the organic functional
  • Layer stack 5 covered area of the electrical contact 3 can serve for external power supply.
  • the electrical contact by means of a bonding wire
  • the organic functional layer stack 5 is deposited without a mask, that is maskless.
  • Electrode 6 structured, so for example by means of a mask, deposited.
  • the advantage of this method is that the organic light-emitting component 100 can first be produced completely and then the contacting between the second electrode 6 and the electrical contact 3 can be produced in the so-called back-end process.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne un composant électroluminescent organique (100) comprenant un substrat (1), une première électrode (2) disposée sur le substrat (1), un contact électrique (3) disposé à côté de la première électrode (2) et destiné à être en contact avec une seconde électrode (6), la seconde électrode (6) n'étant pas directement en contact avec le contact électrique (3), un chemin de courant (4) destiné à la mise en contact étant formé entre la seconde électrode (6) et le contact électrique (3) à l'intérieur de l'empilement de couches fonctionnelles organiques (5), le chemin de courant (4) étant une microvia, au moins un empilement de couches fonctionnelles organiques (5) conçues pour émettre un rayonnement, l'empilement de couches fonctionnelles organiques (5) étant disposé au moins sur la première électrode (2) et au moins partiellement sur le contact électrique (3), la seconde électrode (6) étant disposée sur l'empilement de couches fonctionnelles organiques (5).
PCT/EP2018/051745 2017-01-25 2018-01-24 Composant électroluminescent organique et procédé de fabrication d'un composant électroluminescent organique Ceased WO2018138161A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017101390.3A DE102017101390A1 (de) 2017-01-25 2017-01-25 Organisches Licht emittierendes Bauelement und Verfahren zur Herstellung eines organischen Licht emittierenden Bauelements
DE102017101390.3 2017-01-25

Publications (1)

Publication Number Publication Date
WO2018138161A1 true WO2018138161A1 (fr) 2018-08-02

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PCT/EP2018/051745 Ceased WO2018138161A1 (fr) 2017-01-25 2018-01-24 Composant électroluminescent organique et procédé de fabrication d'un composant électroluminescent organique

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DE (1) DE102017101390A1 (fr)
WO (1) WO2018138161A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007004115A2 (fr) * 2005-06-30 2007-01-11 Koninklijke Philips Electronics N.V. Dispositif a base organique et son procede de fabrication
JP2008071621A (ja) * 2006-09-14 2008-03-27 Pioneer Electronic Corp 導電体膜接続構造及びその作製方法
EP2333859A1 (fr) * 2009-12-03 2011-06-15 Novaled AG Procédé de formation d'une diode électroluminescente organique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2355199B1 (fr) 2010-01-29 2017-07-05 Novaled GmbH Procédé de production de dispositif électroluminescent organique
US9504124B2 (en) 2013-01-03 2016-11-22 Apple Inc. Narrow border displays for electronic devices
DE102014218667B4 (de) 2014-09-17 2023-05-17 Pictiva Displays International Limited Optoelektronische Baugruppe und Verfahren zum Herstellen einer optoelektronischen Baugruppe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007004115A2 (fr) * 2005-06-30 2007-01-11 Koninklijke Philips Electronics N.V. Dispositif a base organique et son procede de fabrication
JP2008071621A (ja) * 2006-09-14 2008-03-27 Pioneer Electronic Corp 導電体膜接続構造及びその作製方法
EP2333859A1 (fr) * 2009-12-03 2011-06-15 Novaled AG Procédé de formation d'une diode électroluminescente organique

Also Published As

Publication number Publication date
DE102017101390A1 (de) 2018-07-26

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