WO2003067678A1 - Production de couches minces homogenes dans la production de dispositifs electroniques plastiques - Google Patents

Production de couches minces homogenes dans la production de dispositifs electroniques plastiques Download PDF

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Publication number
WO2003067678A1
WO2003067678A1 PCT/DE2003/000357 DE0300357W WO03067678A1 WO 2003067678 A1 WO2003067678 A1 WO 2003067678A1 DE 0300357 W DE0300357 W DE 0300357W WO 03067678 A1 WO03067678 A1 WO 03067678A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
production
thin
layers
polymer
Prior art date
Application number
PCT/DE2003/000357
Other languages
German (de)
English (en)
Inventor
Christian-Peter GÖBEL
Adolf Bernds
Wolfgang Clemens
Alexander-Friedrich Knobloch
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2003067678A1 publication Critical patent/WO2003067678A1/fr

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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

Definitions

  • the present invention relates to a method for producing thin, homogeneous polymer layers, in particular in the production of so-called polymer electronics.
  • an essential aspect is the production of layers of high homogeneity and as small a thickness as possible, since the electrical functionality depends to a considerable extent on this.
  • a variant of ink jet printing has been proposed as an alternative method.
  • the solution of the organic material is filled into the ink tank of an inkjet printer and then printed like conventional ink.
  • this method too, only limited production speeds can be achieved and, moreover, the individual microdroplets emerging from the paint nozzle generate pixelation in the layer produced and thus inhomogeneity.
  • Another coating process is the so-called air brush process.
  • the solution of the organic material to be applied is added to an air stream.
  • the coating is done via the liquid mist.
  • the object of the present invention was therefore to develop a methodology with which polymer layers of high homogeneity and small thickness can be produced and, if necessary, can be structured and / or unstructured transferred to a substrate.
  • the present invention relates to a process for producing thin, homogeneous polymer layers, in which low-viscosity solutions of functional polymers are processed into thin layers by means of coating units.
  • the invention relates to a method for producing thin, homogeneous polymer layers in the production of polymer electronics, in which low-viscosity solutions of functional polymers are processed into thin layers by means of coating units and, if appropriate, transferred to a substrate in a structured manner by means of printing technology.
  • coating units are used to apply coatings to paper. Coating units are essentially roller systems and integral components of printing presses with the highest throughput, so that they are suitable for mass production, which is also desirable for the production of polymer electronics.
  • Non-conductive, conductive and / or semiconductive organic polymers are preferably used for the polymer electronics application.
  • Conductive polymer compounds are, for example, polyaniline (PANI) or doped polyethylene (PEDOT).
  • Preferred semiconducting polymer compounds are conjugated polymers, preferably polythiophenes, polythienylvinylenes or perfluor derivatives.
  • Insulating polymer compounds are polyhydroxystyrenes or melamine-formaldehyde resins containing hydroxyl groups. However, this list should not be considered exhaustive.
  • layer thicknesses between 10 nm and 1 ⁇ m are desirable.
  • a coating unit which can be an integral part of a printing press with the highest throughput and can be used according to the invention, essentially consists of a so-called scoop roller and a metering roller, as will be explained in more detail below with reference to the drawings.
  • the layer thickness produced or to be generated can be regulated or adjusted by the pressure and / or the differential speed between the scoop and metering rollers.
  • a chambered doctor blade which essentially consists of a doctor blade and a so-called anilox roller.
  • anilox roller Such a coating unit is explained in more detail below with reference to another drawing.
  • the layer thickness produced or to be generated can be determined here by adjusting the scooping volume of the anilox roller.
  • At least one further roller is used to increase the homogeneity of the layer produced and to further reduce the layer thickness.
  • a high-pressure and / or planographic printing process is preferably used according to the invention for transfer to a substrate, structured or unstructured.
  • a roller system consisting of at least two rollers is used in each case to produce a homogeneous thin film or such a layer of a polymer solution; a roller which takes the solution from a reservoir containing the polymer solution and a roller to make the resulting film more uniform.
  • Two different variants can be used as a reservoir for the polymer solution.
  • an upwardly open container the tub 1, is used for this purpose.
  • the tub 1 contains a certain amount of the polymer solution at all times.
  • the scoop roller 2 which is immersed in the solution, an undefined amount of the solution is transported on its surface by its rotating movement.
  • a further roller a so-called metering roller 3, is used.
  • the amount of polymer solution can be determined, which it absorbs itself. Suitable parameters are the pressure between scoop and metering roller or an adjustable speed difference, ie different speeds of the respective rollers.
  • the homogeneous polymer film of a defined thickness can be transferred from the metering roller to a printing roller, in the case shown a high-pressure mold.
  • doctor blade 1 shows the use of a closed system, here a so-called chambered doctor blade 1. It consists of a chamber that is only open to one side. At the edges of the open side there are two sharp-edged metal sheets, doctor blades 2. Doctor blades 2 are in constant contact with a cylinder structured on the surface, that is, anilox roller 3. The whole is a closed system. In the chamber there is polymer solution. When the anilox roller 3 rotates, the doctor blades 2 ensure that polymer solution remains only in the depressions (not shown) in the surface of the anilox roller 3, the so-called cups. However, this also means that the structuring of the surface determines the maximum amount of the polymer solution to be transported and thus the layer thickness to be achieved. For example, an anilox roller 3 with a scooping volume of 20 cm 3 / m 2 applies a uniform layer with a thickness of about 8 ⁇ m over the entire surface of a substrate.
  • the layer thickness can thus be reduced by refining the structuring.
  • the use of a surface-structured roller takes advantage of the fact that small areas can be produced more easily with a homogeneous layer thickness.
  • Subsequent connection of at least one further roller causes the microstructuring to be homogenized and a homogeneous closed surface is created.
  • the effect is exploited here that the solution is not completely transferred from one roller to the next. This is referred to as the so-called splitting effect, ie an originally produced film of a defined thickness is partially but completely transferred to a next roller. This will a reduction in the layer thickness and further homogenization of the layer.
  • the homogeneity can be further increased if a lateral movement of the rollers towards one another is provided.
  • the thin, homogeneous layer is transferred to a subsequent printing system 4.
  • the printing system is used to apply the layer in a structured or unstructured manner to a substrate.
  • the high pressure or a planographic printing process can advantageously be used as the printing process.
  • the positions to be printed are raised compared to those not to be printed.
  • the last roller of the roller system for producing the thin layer transfers this to the printing areas of the printing form.
  • the structure can be transferred to the substrate to be printed directly from the printing form or indirectly via another cylinder.
  • the printing form is attached to a cylinder and can be replaced. The same applies to the flat printing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

La présente invention concerne un procédé de production de couches de polymères minces homogènes, en particulier dans la production de ce que l'on appelle les dispositifs électroniques plastiques. Selon ce procédé, on forme des couches minces avec des solutions de basse viscosité de polymères fonctionnels, au moyen d'installation de vernissage.
PCT/DE2003/000357 2002-02-08 2003-02-07 Production de couches minces homogenes dans la production de dispositifs electroniques plastiques WO2003067678A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10205314 2002-02-08
DE10205314.6 2002-02-08

Publications (1)

Publication Number Publication Date
WO2003067678A1 true WO2003067678A1 (fr) 2003-08-14

Family

ID=27674590

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/000357 WO2003067678A1 (fr) 2002-02-08 2003-02-07 Production de couches minces homogenes dans la production de dispositifs electroniques plastiques

Country Status (1)

Country Link
WO (1) WO2003067678A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1266315B (de) * 1962-09-21 1968-04-18 Machines Speciales Sa Soc Et Farbwerk fuer eine Rotationsdruckmaschine
US5355796A (en) * 1992-04-04 1994-10-18 Man Roland Druckmaschinen Ag Anilox offset printing unit with a short inking device
US5615611A (en) * 1994-10-26 1997-04-01 Koenig & Bauer-Albert Aktiengesellschaft Chamber doctor blade assembly
DE19711918A1 (de) * 1997-03-21 1998-09-24 Heidelberger Druckmasch Ag Verfahren zum Einstellen der Farbschichtdicke beim Aufbringen von Druckfarben auf einen Bedruckstoff
EP1065725A2 (fr) * 1999-06-28 2001-01-03 Sel Semiconductor Energy Laboratory Co., Ltd. Méthode de fabrication d'un dispositif électro-optique
EP1103590A2 (fr) * 1999-11-24 2001-05-30 Sharp Kabushiki Kaisha Liquide aqueux de revêtement pour la production des dispositifs électroluminescents organiques

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1266315B (de) * 1962-09-21 1968-04-18 Machines Speciales Sa Soc Et Farbwerk fuer eine Rotationsdruckmaschine
US5355796A (en) * 1992-04-04 1994-10-18 Man Roland Druckmaschinen Ag Anilox offset printing unit with a short inking device
US5615611A (en) * 1994-10-26 1997-04-01 Koenig & Bauer-Albert Aktiengesellschaft Chamber doctor blade assembly
DE19711918A1 (de) * 1997-03-21 1998-09-24 Heidelberger Druckmasch Ag Verfahren zum Einstellen der Farbschichtdicke beim Aufbringen von Druckfarben auf einen Bedruckstoff
EP1065725A2 (fr) * 1999-06-28 2001-01-03 Sel Semiconductor Energy Laboratory Co., Ltd. Méthode de fabrication d'un dispositif électro-optique
EP1103590A2 (fr) * 1999-11-24 2001-05-30 Sharp Kabushiki Kaisha Liquide aqueux de revêtement pour la production des dispositifs électroluminescents organiques

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