Method for the production and configuration of organic field-effect transistors (ofet)

• US 20030190767A1
• Filed: 01/06/2003
• Published: 10/09/2003
• Est. Priority Date: 07/07/2000
• Status: Active Grant

• Current Assignee: PolyIC GmbH & Co. KG (Leonhard KURZ Stiftung & Company KG)
• Original Assignee: PolyIC GmbH & Co. KG (Leonhard KURZ Stiftung & Company KG)
• Inventors: Rost, Henning, Bernds, Adolf, Clemens, Wolfgang, Fix, Walter
• Granted Patent: US 6,852,583 B2
• Time in Patent Office: Days
• US Class Current: 438/99
• CPC Class Codes: H10K 10/468 characterised by the gate dielectrics
• CPC Class Codes: H10K 71/13 using printing techniques, e.g. ink-jet printing or screen printing
• CPC Class Codes: H10K 71/60 Forming conductive regions or layers, e.g. electrodes

Abstract

The invention relates to an economical and precise method for the production and configuration of OFETs, whereby the solubility of at least one functional polymer of an OFET is utilised to such a degree, that the functional polymer is deposited on the OFET, or a substrate, by means of a conventional printing process as for a colour.

Claims

1. An organic field-effect transistor, comprising at least the following layers on a substrate:

a semiconducting layer between a source electrode and a drain electrode,

an insulation layer on above the semiconducting layer and

a conductor layer,

the conductor layer and at least one of the other two layers being patterned.

9. The use of an OFET as claimed in claim 1 for producing an identification and/or product tag.

2. A method for producing an OFET by printing at least one functional polymer onto a substrate, the functional polymer first being applied in an ink-like consistency and then being printed onto the substrate.

3. The method as claimed in claim 2, in which a printing method by which color images can be produced is employed using a functional polymer instead of an ink.

4. The method as claimed in either of the preceding claims 2 and 3, in which a pad printing method is employed.

5. The method as claimed in one of the preceding claims 2 to 4, in which a pad made of silicone is employed.

6. The method as claimed in one of the preceding claims 2 to 5, in which a pad roll is employed in a continuous process.

7. The method as claimed in one of the preceding claims 2 to 6, in which the functional polymer is brought to an ink-like consistency by introduction into a solvent.

8. The method as claimed in one of the preceding claims 2 to 7, in which a resolution and/or patterning in the μ

m range is realized.

10. The use of the method as claimed in one of claims 2 to 8 for producing identification and product tags.