WO2000012226A1 - Ecran multicolore a diodes electroluminescentes organiques et son procede de fabrication grace a une technique par jet d'encre - Google Patents

Ecran multicolore a diodes electroluminescentes organiques et son procede de fabrication grace a une technique par jet d'encre Download PDF

Info

Publication number
WO2000012226A1
WO2000012226A1 PCT/US1999/019549 US9919549W WO0012226A1 WO 2000012226 A1 WO2000012226 A1 WO 2000012226A1 US 9919549 W US9919549 W US 9919549W WO 0012226 A1 WO0012226 A1 WO 0012226A1
Authority
WO
WIPO (PCT)
Prior art keywords
light emitting
emitting diode
organic light
diode display
color conversion
Prior art date
Application number
PCT/US1999/019549
Other languages
English (en)
Inventor
Gary W. Jones
Webster E. Howard
Original Assignee
Fed Corporation
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 Fed Corporation filed Critical Fed Corporation
Publication of WO2000012226A1 publication Critical patent/WO2000012226A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/003—Printing processes to produce particular kinds of printed work, e.g. patterns on optical devices, e.g. lens elements; for the production of optical 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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns

Definitions

  • the present invention relates to a full color organic light emitting diode (“OLED”) display and method for making the same whereby ink jet technology is employed to pattern color conversion materials used in conjunction with OLEDs to produce a full color display.
  • OLED organic light emitting diode
  • OLEDs have been known for approximately two decades. All OLEDs work on the same general principles. One or more layers of semiconducting organic material is sandwiched between two electrodes. An electric current is applied to the device, causing negatively charged electrons to move into the organic material(s) from the cathode. Positive charge, typically referred to as holes, moves in the anode. The positive and negative charges meet in the center layers (i.e., the semiconducting organic material), combine, and produce photons. The wave-length ⁇ and consequently the color ⁇ of the photons depends on the electronic properties of the organic material in which the photons are generated.
  • An organic light emitting device is typically a laminate formed on a substrate such as soda-lime glass.
  • a light-emitting layer of a luminescent organic solid, as well as adjacent semiconductor layers, are sandwiched between a cathode and an anode.
  • the semiconductor layers may be hole-injecting and electron-injecting layers.
  • the light-emitting layer may be any of a multitude of fluorescent organic solids.
  • OLEDs are formed on a single substrate and arranged in groups in a grid pattern.
  • OLED groups forming a column of the grid may share a common cathode, or cathode line.
  • OLED groups forming a row of the grid may share a common anode, or anode line.
  • the individual OLEDs in a given group emit light when their cathode line and anode line are activated at the same time.
  • OLEDs have a number of beneficial characteristics. These characteristics include a low activation voltage (about 2 volts), fast response when formed with a thin light emitting layer, and high brightness in proportion to the injected electric current. Depending on the composition of the organic material making up the light emitting layer, many different colors of light may be produced, ranging from visible blue, to green, yellow and red.
  • the present invention is directed to a method of manufacturing a full color organic light emitting diode display.
  • the method includes the steps of providing an organic light emitting diode display, providing a protective layer for the organic light emitting diode display, and selectively applying at least one color conversion material on the protective layer.
  • the protective layer is applied using an ink jet printer.
  • the step of providing a protective layer for the organic light emitting diode display includes the step of forming a protective layer on a top electrode of the organic light emitting diode display. In another embodiment of the present invention, the step of providing a protective layer for the organic light emitting diode display includes the step of positioning a protective substrate adjacent a top electrode of the organic light emitting diode display.
  • Fig. 1 is a schematic view illustrating a method of forming a full color OLED device according to one embodiment of the present invention
  • Fig. 2 is a schematic view of a full color OLED device according to another embodiment of the present invention.
  • the full color OLED display 10 includes a substrate 11.
  • the substrate 11 is preferably formed from an opaque material because the OLED display 10 is an upwardly emitting device.
  • An active matrix addressing system having electrodes 12 is formed in the opaque substrate 11.
  • a stack of organic layers 13 is formed on the substrate 11 and active matrix addressing system 12.
  • the stack of organic layers 13 preferably form a blue light emitting OLED.
  • a transparent top electrode 14 is formed on the stack of organic layers 13.
  • a protective layer 15 is formed on top of the transparent electrode 14 which is transparent and impervious to moisture and/or organic solvents.
  • color conversion materials capable of converting blue light into green or red light are disposed in a pixel pattern 16.
  • the pixel pattern 16 is in alignment with a pattern of electrodes 12 in the substrate 11. This is accomplished by using a precision ink jet printer 1, which is capable of placing small dots of liquid with great accuracy. Just as ink jet color printers can put down different inks in a pattern, the red and green color conversion materials can be applied to the protective layer 15 of the OLED 10 to produce a full color OLED device.
  • the ink jet printer 1 can place dot or stripe patterns as small as 5 ⁇ m. These patterns can be placed with 1-2 ⁇ m accuracy. Color conversion materials, which might consist of a single conjugated polymer or a dye in a polymer matrix, are dissolved in an appropriate solvent such that the solution has the required rheological characteristics for ink jet use.
  • the full color display 10 of Fig. 1 is illustrated in Fig. 2.
  • the full color OLED display 20 includes a substrate 21.
  • the substrate 21 is preferably formed from an opaque material because the OLED display 20 is an upwardly emitting device.
  • An active matrix addressing system having electrodes 22 is formed in the opaque substrate 21.
  • a stack of organic layers 23 is formed on the substrate 21 and active matrix addressing system 22.
  • the stack of engine layers 23 preferably form a blue light emitting OLED.
  • a transparent top electrode 24 is formed on the stack of organic layers 23.
  • a transparent protective layer may be formed on top of the transparent electrode 24, as described above in connection with the OLED display 10.
  • Color conversion materials are patterned on a transparent substrate 25 forming a pixel pattern 26.
  • the pixel pattern 26 is in alignment with the electrodes 22 in the substrate 21.
  • the transparent substrate 25 may be positioned such that the pixel pattern 26 of the color conversion materials is adjacent and in close proximity to the top electrode 24, as shown in Fig. 4. Alternatively, adjacent the top electrode 24.
  • Another embodiment of the present invention is illustrated in Fig. 3. The full color

Landscapes

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

Abstract

La présente invention concerne un procédé de fabrication d'un écran multicolore à diodes électroluminescentes organiques. Le procédé consiste à prendre un écran (10) à diodes électroluminescentes organiques, à prendre une couche (15) protectrice de l'écran (10) à diodes électroluminescentes organiques, puis à appliquer sélectivement au moins une matière (16) de conversion de couleurs sur la couche (15) protectrice. On applique la matière de conversion de couleurs au moyen d'une imprimante à jet d'encre (1).
PCT/US1999/019549 1998-08-28 1999-08-27 Ecran multicolore a diodes electroluminescentes organiques et son procede de fabrication grace a une technique par jet d'encre WO2000012226A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9853598P 1998-08-28 1998-08-28
US60/098,535 1998-08-28

Publications (1)

Publication Number Publication Date
WO2000012226A1 true WO2000012226A1 (fr) 2000-03-09

Family

ID=22269732

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/019549 WO2000012226A1 (fr) 1998-08-28 1999-08-27 Ecran multicolore a diodes electroluminescentes organiques et son procede de fabrication grace a une technique par jet d'encre

Country Status (1)

Country Link
WO (1) WO2000012226A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004084309A1 (fr) * 2003-03-21 2004-09-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Composant electroluminescent comprenant une couche de conversion inorganique-organique
WO2005048373A1 (fr) * 2003-11-10 2005-05-26 E.I. Dupont De Nemours And Company Procede de formation de couches organiques presentant une zone qui comprend un materiau invite et dispositifs electroniques organiques comportant la meme chose
WO2005048372A1 (fr) * 2003-11-10 2005-05-26 E.I. Dupont De Nemours And Company Materiau organique stratifie comportant une zone contenant un materiau hote et dispositifs electroniques organiques comprenant ce materiau
US6924504B2 (en) 2002-04-10 2005-08-02 Samsung Sdi Co., Ltd. Organic light emitting diode and method for producing the same
US6924025B2 (en) 2001-04-09 2005-08-02 Samsung Sdi Co., Ltd. Matrix arrangement of organic material layers and electrodes including pixels
US7091660B2 (en) 2003-01-22 2006-08-15 Samsung Sdi Co., Ltd. Polymer organic light emitting diode
US7268006B2 (en) 2004-12-30 2007-09-11 E.I. Du Pont De Nemours And Company Electronic device including a guest material within a layer and a process for forming the same
US9425364B2 (en) 2003-06-18 2016-08-23 Tridonic Optoelectronics Gmbh Method for the production of white LEDs and white LED light source

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5688551A (en) * 1995-11-13 1997-11-18 Eastman Kodak Company Method of forming an organic electroluminescent display panel
US5798170A (en) * 1996-02-29 1998-08-25 Uniax Corporation Long operating life for polymer light-emitting diodes
US5895115A (en) * 1996-01-16 1999-04-20 Lumitex, Inc. Light emitting panel assemblies for use in automotive applications and the like
US5920080A (en) * 1997-06-23 1999-07-06 Fed Corporation Emissive display using organic light emitting diodes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5688551A (en) * 1995-11-13 1997-11-18 Eastman Kodak Company Method of forming an organic electroluminescent display panel
US5895115A (en) * 1996-01-16 1999-04-20 Lumitex, Inc. Light emitting panel assemblies for use in automotive applications and the like
US5798170A (en) * 1996-02-29 1998-08-25 Uniax Corporation Long operating life for polymer light-emitting diodes
US5920080A (en) * 1997-06-23 1999-07-06 Fed Corporation Emissive display using organic light emitting diodes

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6924025B2 (en) 2001-04-09 2005-08-02 Samsung Sdi Co., Ltd. Matrix arrangement of organic material layers and electrodes including pixels
US6924504B2 (en) 2002-04-10 2005-08-02 Samsung Sdi Co., Ltd. Organic light emitting diode and method for producing the same
US7091660B2 (en) 2003-01-22 2006-08-15 Samsung Sdi Co., Ltd. Polymer organic light emitting diode
WO2004084309A1 (fr) * 2003-03-21 2004-09-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Composant electroluminescent comprenant une couche de conversion inorganique-organique
US9425364B2 (en) 2003-06-18 2016-08-23 Tridonic Optoelectronics Gmbh Method for the production of white LEDs and white LED light source
WO2005048373A1 (fr) * 2003-11-10 2005-05-26 E.I. Dupont De Nemours And Company Procede de formation de couches organiques presentant une zone qui comprend un materiau invite et dispositifs electroniques organiques comportant la meme chose
WO2005048372A1 (fr) * 2003-11-10 2005-05-26 E.I. Dupont De Nemours And Company Materiau organique stratifie comportant une zone contenant un materiau hote et dispositifs electroniques organiques comprenant ce materiau
EP2117060A1 (fr) 2003-11-10 2009-11-11 E. I. du Pont de Nemours and Company Dispositifs électroniques organiques incorporant matériau organique avec une région incluant un matériau client
US7268006B2 (en) 2004-12-30 2007-09-11 E.I. Du Pont De Nemours And Company Electronic device including a guest material within a layer and a process for forming the same
US7420205B2 (en) 2004-12-30 2008-09-02 E. I. Du Pont De Nemours And Company Electronic device including a guest material within a layer and a process for forming the same

Similar Documents

Publication Publication Date Title
US6924025B2 (en) Matrix arrangement of organic material layers and electrodes including pixels
EP3440713B1 (fr) Del imprimée par micro-transfert et structure de filtre coloré
US5972419A (en) Electroluminescent display and method for making the same
CN107293572B (zh) Oled显示面板及其制备方法
CN100498430C (zh) 有机场致发光装置和电子设备
EP2011153B1 (fr) Affichage optoélectronique et procédé de fabrication de ce dernier
US7745987B2 (en) Organic electroluminescent display device
JP4237501B2 (ja) エレクトロルミネセント装置及びその製造方法
US6016033A (en) Electrode structure for high resolution organic light-emitting diode displays and method for making the same
US7940001B2 (en) Full-color organic light emitting display and method of fabricating the same
KR100307333B1 (ko) 전계발광소자
US6936856B2 (en) Multi substrate organic light emitting devices
EP3240029A1 (fr) Substrat d'affichage, procédé de fabrication et dispositif d'affichage associés
US20070024183A1 (en) Full-color organic electroluminescence panel with high resolution
JP2009533810A5 (fr)
JP2006503410A (ja) 基板上に機能材料をパターン形成する方法
JP4603133B2 (ja) Ｅｌディスプレイ用の基板装置、その製造方法、及び使用される製造装置
JP2004535053A (ja) 有機、カラー、エレクトロルミネセンスディスプレイおよびその製造
US7948162B2 (en) Light-emissive display and method of manufacturing the same
JPH1187062A (ja) 電界発光素子
WO2000012226A1 (fr) Ecran multicolore a diodes electroluminescentes organiques et son procede de fabrication grace a une technique par jet d'encre
CN111863881A (zh) Oled显示装置及制造oled显示装置的方法
WO1998059382A1 (fr) Dispositif photoemetteur organique couleur et commande en tension et son procede de production
CN105957879B (zh) 一种印刷型pm显示面板及其制备方法
JP2007026684A (ja) 有機エレクトロルミネッセンス表示素子

Legal Events

Date Code Title Description
AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase