EP1273052A1 - Method for producing organic light-emitting diodes - Google Patents
Method for producing organic light-emitting diodesInfo
- 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- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000007639 printing Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 239000011521 glass Substances 0.000 claims description 5
- 238000007645 offset printing Methods 0.000 abstract description 3
- 238000007641 inkjet printing Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 6
- 239000012044 organic layer Substances 0.000 description 4
- 238000007646 gravure printing Methods 0.000 description 2
- 238000007644 letterpress printing Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002207 thermal evaporation Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
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
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10018168A DE10018168A1 (en) | 2000-04-12 | 2000-04-12 | Method of manufacturing organic light emitting diodes |
DE10018168 | 2000-04-12 | ||
PCT/DE2001/001444 WO2001078163A1 (en) | 2000-04-12 | 2001-04-12 | Method for producing organic light-emitting diodes |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1273052A1 true EP1273052A1 (en) | 2003-01-08 |
Family
ID=7638496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01933604A Withdrawn EP1273052A1 (en) | 2000-04-12 | 2001-04-12 | Method for producing organic light-emitting diodes |
Country Status (6)
Country | Link |
---|---|
US (1) | US20030174551A1 (en) |
EP (1) | EP1273052A1 (en) |
JP (1) | JP2003530665A (en) |
DE (1) | DE10018168A1 (en) |
TW (1) | TW569468B (en) |
WO (1) | WO2001078163A1 (en) |
Families Citing this family (5)
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 |
WO2003012885A1 (en) * | 2001-07-27 | 2003-02-13 | The Ohio State University | Methods for producing electroluminescent devices by screen printing |
EP1423991A4 (en) | 2001-07-27 | 2009-06-17 | Univ Ohio State | Methods for fabricating polymer light emitting devices by lamination |
DE102004041497B4 (en) * | 2004-08-27 | 2007-04-05 | Polyic Gmbh & Co. Kg | "Organic electronic component and method of making such a" |
RU2528128C1 (en) * | 2013-03-06 | 2014-09-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Томский государственный университет систем управления и радиоэлектроники" | Method of manufacturing organic light-emitting diode |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0550063A2 (en) * | 1991-12-30 | 1993-07-07 | Eastman Kodak Company | Organic electroluminescent multicolor image display device |
EP0892589A1 (en) * | 1997-02-04 | 1999-01-20 | Idemitsu Kosan Company Limited | Organic electroluminescent display device |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS614020A (en) * | 1984-06-18 | 1986-01-09 | Nissha Printing Co Ltd | Multicolor liquid crystal display device |
US4869532A (en) * | 1986-10-07 | 1989-09-26 | Dainichiseika Color & Chemicals Mfg. Co., Ltd. | Prints and production method thereof |
DE19627071A1 (en) * | 1996-07-05 | 1998-01-08 | Bayer Ag | Electroluminescent devices |
JPH10338872A (en) * | 1997-06-09 | 1998-12-22 | Tdk Corp | Color conversion material and organic el color display |
US5953587A (en) * | 1997-11-24 | 1999-09-14 | The Trustees Of Princeton University | Method for deposition and patterning of organic thin film |
US6013538A (en) * | 1997-11-24 | 2000-01-11 | The Trustees Of Princeton University | Method of fabricating and patterning OLEDs |
JP3322204B2 (en) * | 1998-02-02 | 2002-09-09 | 富士電機株式会社 | Multicolor light-emitting organic electroluminescent device and method of manufacturing the same |
EP1011154B1 (en) * | 1998-12-15 | 2010-04-21 | Sony Deutschland GmbH | Polyimide layer comprising functional material, device employing the same and method of manufacturing same device |
TW556357B (en) * | 1999-06-28 | 2003-10-01 | Semiconductor Energy Lab | Method of manufacturing an electro-optical device |
JP3591387B2 (en) * | 1999-09-22 | 2004-11-17 | 富士電機ホールディングス株式会社 | Organic EL device |
-
2000
- 2000-04-12 DE DE10018168A patent/DE10018168A1/en not_active Ceased
-
2001
- 2001-04-11 TW TW090108649A patent/TW569468B/en active
- 2001-04-12 US US10/257,079 patent/US20030174551A1/en not_active Abandoned
- 2001-04-12 WO PCT/DE2001/001444 patent/WO2001078163A1/en active Application Filing
- 2001-04-12 JP JP2001574918A patent/JP2003530665A/en active Pending
- 2001-04-12 EP EP01933604A patent/EP1273052A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0550063A2 (en) * | 1991-12-30 | 1993-07-07 | Eastman Kodak Company | Organic electroluminescent multicolor image display device |
EP0892589A1 (en) * | 1997-02-04 | 1999-01-20 | Idemitsu Kosan Company Limited | Organic electroluminescent display device |
Non-Patent Citations (1)
Title |
---|
See also references of WO0178163A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20030174551A1 (en) | 2003-09-18 |
WO2001078163A1 (en) | 2001-10-18 |
JP2003530665A (en) | 2003-10-14 |
DE10018168A1 (en) | 2001-10-25 |
TW569468B (en) | 2004-01-01 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20020906 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BLAESSING, JOERG Inventor name: STOESSEL, MATTHIAS Inventor name: WITTMANN, GEORG |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AT BE CH DE FR GB LI |
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17Q | First examination report despatched |
Effective date: 20061017 |
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17Q | First examination report despatched |
Effective date: 20061017 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: OSRAM OPTO SEMICONDUCTORS GMBH |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: OSRAM OPTO SEMICONDUCTORS GMBH |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20081104 |