EP1273052A1 - Procede de production de diodes organiques emettrices de lumiere - Google Patents

Procede de production de diodes organiques emettrices de lumiere

Info

Publication number
EP1273052A1
EP1273052A1 EP01933604A EP01933604A EP1273052A1 EP 1273052 A1 EP1273052 A1 EP 1273052A1 EP 01933604 A EP01933604 A EP 01933604A EP 01933604 A EP01933604 A EP 01933604A EP 1273052 A1 EP1273052 A1 EP 1273052A1
Authority
EP
European Patent Office
Prior art keywords
printing
emitting diodes
color conversion
organic light
producing organic
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.)
Withdrawn
Application number
EP01933604A
Other languages
German (de)
English (en)
Inventor
Jörg BLÄSSING
Georg Wittmann
Matthias STÖSSEL
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.)
Ams Osram International GmbH
Original Assignee
Osram Opto Semiconductors 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 Opto Semiconductors GmbH filed Critical Osram Opto Semiconductors GmbH
Publication of EP1273052A1 publication Critical patent/EP1273052A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10—Deposition of organic active material
    • H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
    • H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
    • H10K71/135—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
    • G03F7/0007—Filters, e.g. additive colour filters; Components for display devices
    • 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

Definitions

  • the invention relates to a method for producing organic, light-emitting diodes (OLEDs) which can be used, for example, for the production of flat screens.
  • OLEDs organic, light-emitting diodes
  • the luminosity of diodes of the type mentioned is based on the property of certain organic materials to emit light when voltage is applied. Depending on the material used, different color effects can be achieved.
  • the emitter layers consisting of the materials mentioned are combined with a color conversion layer. These layers consist of a material which absorbs the light waves emitted by the emitter material and emits them again with a longer wavelength.
  • the color conversion layers can either be applied over a large area or in the form of pixels.
  • a method is known from WO 98/28946 in which color conversion layers are applied using a method known from ink-jet printers.
  • the printing processes also known as ink-jet processes, work without contact by applying the color conversion material from fine nozzles to the surface to be coated.
  • Color conversion layers are generally very sensitive to interferences, such as changing layer thicknesses or uneven layer surfaces. With the inkjet printing process, however, it is very difficult to achieve a smooth surface. In addition, an exact delimitation of the individual pixels from each other is difficult to achieve.
  • the object of the invention is to propose a production method by means of which color conversion layers are formed in such a way in a technically simple, gentle and reliable manner. bring that they have a uniform layer thickness and a smooth surface.
  • This object is achieved according to claim 1 in that the color conversion layer is applied to a substrate using a printing form.
  • Printing processes that use a printing form are planographic printing (e.g. offset printing), letterpress printing (e.g. letterpress and flexographic printing), gravure printing and printing.
  • planographic printing the printing and non-printing areas lie in one plane, while in the case of letterpress printing, the printing parts protrude from the printing plate plane.
  • gravure printing the printing parts are deepened.
  • the printing form is a very fine mesh. Both the large-area conversion layers and those with pixel-shaped screening can be produced using the printing processes mentioned.
  • a glass substrate or a transparent flexible film is preferably used as the substrate.
  • FIG. 1 shows a schematic cross section through a large-area, single-color diode
  • FIG. 2-4 shows schematic plan views of a diode, which represent the successive application of the various layers.
  • a layer 2 of ITO which works as an anode, is applied to one side of a glass substrate 1.
  • a transparent flexible film can also serve as the substrate.
  • One or more functional organic layers 3 are applied to the ITO layer 2, for example by thermal evaporation. The Functional organic layers 3 are selected so that they emit blue light. Calcium is deposited on the organic layers 3 as cathode 5.
  • a color conversion layer 4 is applied over a large area to the other side of the glass substrate 1 by means of an offset printing process.
  • the diode shown in FIG. 2-4 is an enlarged section of a full-color diode.
  • a color conversion layer is first printed on a glass substrate using one of the printing methods mentioned above in the form of a pixel matrix.
  • Pixels 6, 7 alternate with red and green converting materials with a free space 8.
  • the pixels 6, 7 and the free space 8 together form a superordinate pixel 9.
  • the pixels 6, 7 and the free pixel 8 have dimensions of approximately 80 ⁇ m x 280 ⁇ m.
  • the distance between the pixels is approx. 20 ⁇ m.
  • This layer is structured photolithographically into parallel strips with a width of likewise 80 ⁇ m and a distance of 20 ⁇ m.
  • photoresist strips 11 with a width of approximately 30 ⁇ m are applied at right angles to the ITO strips (FIG. 4).
  • the functional organic layers are deposited by thermal evaporation or by application from solution.
  • a cathode is then evaporated over a large area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L"invention concerne un procédé de production de diodes organiques émettrices de lumière (OLED) (2.3.5). Selon les procédés de production classiques, les couches de conversion des couleurs (4) sont appliquées sans contact sur un substrat (1) à l"aide de procédés d"impression par jet d"encre. Selon l"invention, on utilise des procédés permettant l"impression directe du substrat, notamment les procédés utilisant une planche comme, par exemple, l"impression flexographique et l"impression offset.
EP01933604A 2000-04-12 2001-04-12 Procede de production de diodes organiques emettrices de lumiere Withdrawn EP1273052A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10018168A DE10018168A1 (de) 2000-04-12 2000-04-12 Verfahren zum Herstellen von organischen, Licht emittierenden Dioden
DE10018168 2000-04-12
PCT/DE2001/001444 WO2001078163A1 (fr) 2000-04-12 2001-04-12 Procede de production de diodes organiques emettrices de lumiere

Publications (1)

Publication Number Publication Date
EP1273052A1 true EP1273052A1 (fr) 2003-01-08

Family

ID=7638496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01933604A Withdrawn EP1273052A1 (fr) 2000-04-12 2001-04-12 Procede de production de diodes organiques emettrices de lumiere

Country Status (6)

Country Link
US (1) US20030174551A1 (fr)
EP (1) EP1273052A1 (fr)
JP (1) JP2003530665A (fr)
DE (1) DE10018168A1 (fr)
TW (1) TW569468B (fr)
WO (1) WO2001078163A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6623870B1 (en) 1996-08-02 2003-09-23 The Ohio State University Electroluminescence in light emitting polymers featuring deaggregated polymers
CA2454743A1 (fr) * 2001-07-27 2003-02-13 The Ohio State University Procedes destines a produire des dispositifs electroluminescents par serigraphie
WO2003013192A1 (fr) 2001-07-27 2003-02-13 The Ohio State University Procedes de production par stratification de dispositifs electroluminescents polymeres
DE102004041497B4 (de) * 2004-08-27 2007-04-05 Polyic Gmbh & Co. Kg "Organisches Elektronik-Bauteil sowie Verfahren zur Herstellung eines solchen"
RU2528128C1 (ru) * 2013-03-06 2014-09-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Томский государственный университет систем управления и радиоэлектроники" Способ изготовления органического светоизлучающего диода

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0550063A2 (fr) * 1991-12-30 1993-07-07 Eastman Kodak Company Dispositif d'affichage électroluminescent organique à image multicolore
EP0892589A1 (fr) * 1997-02-04 1999-01-20 Idemitsu Kosan Company Limited Afficheur a electroluminescence organique

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS614020A (ja) * 1984-06-18 1986-01-09 Nissha Printing Co Ltd マルチカラ−液晶表示装置
US4869532A (en) * 1986-10-07 1989-09-26 Dainichiseika Color & Chemicals Mfg. Co., Ltd. Prints and production method thereof
DE19627071A1 (de) * 1996-07-05 1998-01-08 Bayer Ag Elektrolumineszierende Anordnungen
JPH10338872A (ja) * 1997-06-09 1998-12-22 Tdk Corp 色変換材料およびこれを用いた有機ｅｌカラーディスプレイ
US6013538A (en) * 1997-11-24 2000-01-11 The Trustees Of Princeton University Method of fabricating and patterning OLEDs
US5953587A (en) * 1997-11-24 1999-09-14 The Trustees Of Princeton University Method for deposition and patterning of organic thin film
JP3322204B2 (ja) * 1998-02-02 2002-09-09 富士電機株式会社 多色発光有機エレクトロルミネッセンス素子およびその製造方法
DE69841627D1 (de) * 1998-12-15 2010-06-02 Max Planck Inst Fuer Polymerfo Funktionelles Material enthaltende Polyimid-Schicht, Vorrichtung die sie verwendet und Verfahren zur Herstellung dieser Vorrichtung
TW556357B (en) * 1999-06-28 2003-10-01 Semiconductor Energy Lab Method of manufacturing an electro-optical device
JP3591387B2 (ja) * 1999-09-22 2004-11-17 富士電機ホールディングス株式会社 有機ｅｌ素子

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0550063A2 (fr) * 1991-12-30 1993-07-07 Eastman Kodak Company Dispositif d'affichage électroluminescent organique à image multicolore
EP0892589A1 (fr) * 1997-02-04 1999-01-20 Idemitsu Kosan Company Limited Afficheur a electroluminescence organique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO0178163A1 *

Also Published As

Publication number Publication date
US20030174551A1 (en) 2003-09-18
DE10018168A1 (de) 2001-10-25
WO2001078163A1 (fr) 2001-10-18
JP2003530665A (ja) 2003-10-14
TW569468B (en) 2004-01-01

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