Mechanical control elements for organic polymer electronic devices

• US 7,576,294 B2
• Filed: 08/31/2004
• Issued: 08/18/2009
• Est. Priority Date: 09/03/2003
• Status: Expired due to Fees

• Current Assignee: PolyIC GmbH & Co. KG (Leonhard KURZ Stiftung & Company KG)
• Original Assignee: PolyIC GmbH & Co. KG (Leonhard KURZ Stiftung & Company KG)
• Inventors: Knobloch, Alexander Friedrich, Clemens, Wolfgang, Ullmann, Andreas, Ficker, Jurgen
• Primary Examiner(s): Friedhofer; Michael A
• Application Number:
  US10/570,571
• Publication Number:
  US 20070008019A1
• Time in Patent Office: 1,813 Days
• Field of Search: 200/5.A, 200/511, 200/512, 200/600, 341/22, 341/33, 341/34, 345/168, 345/169, 345/173, 345/174
• US Class Current: 200/512
• CPC Class Codes: H01H 13/70 having a plurality of operating members associated with different sets of contacts, e.g. keyboard mounting together a plurality of independent switches H02B
• CPC Class Codes: H01H 13/703 characterised by spacers between contact carrying layers
• CPC Class Codes: H01H 13/785 characterised by the material of the contacts, e.g. conductive polymers
• CPC Class Codes: H01H 2201/032 Conductive polymer; Rubber
• CPC Class Codes: H01H 2209/056 Conductive rubber
• CPC Class Codes: H01H 9/061 enclosing a continuously variable impedance

Abstract

A switching element for polymer electronic devices is constructed from organic materials.

Claims

1. A printed mechanical polymeric switching device for the mechanical switching of electronic devices, comprising:

a substrate; and

a mechanical polymeric switching element on the substrate, the element comprising conducting and insulating organic substances applied to the substrate by printing.

2. The printed polymeric switching device as claimed in claim 1, wherein the switching element is arranged to be switched mechanically reversibly.

3. A polymeric circuit including a printed polymeric switching device as claimed in claim 2.

4. The printed polymeric switching device as claimed in claim 1 wherein the switching element exhibits a given electrical parameter value and is arranged to be responsive to an applied pressure which changes the electrical parameter value in response to the magnitude of the pressure exerted on the switching device.

5. The a printed polymeric switching device of claim 4 wherein the electrical parameter value is capacitance.

6. A polymeric circuit including a printed polymeric switching device as claimed in claim 4.

7. The printed polymeric switching device as claimed in claim 1 wherein the switching device includes two organic conduction elements situated opposite one another on the substrate, which conduction elements are separated by an insulating organic layer having an opening.

8. The printed polymeric switching device as claimed in claim 7 wherein one of the organic conduction elements is flexible, so that it can be pressed through the opening in the insulating organic layer onto the other organic conduction element.

9. A polymeric circuit including a printed polymeric switching device as claimed in claim 8.

10. A polymeric circuit including a printed polymeric switching device as claimed in claim 7.

11. The printed polymeric switching device as claimed in claim 1 wherein the switching device includes a plurality of organic conduction elements, of which two conduction elements are conductively connected by a third conduction element and the third conduction element is arranged to be removable from the other two conduction elements by applied pressure.

12. A polymeric circuit including a printed polymeric switching device as claimed in claim 11.

13. The printed polymeric switching device as claimed in claim 1 including an organic conduction element on the substrate and an arrangement on the substrate for interrupting conduction of the conduction element.

14. A polymeric circuit including a printed polymeric switching device as claimed in claim 13.

15. The printed polymeric switching device as claimed in claim 1 wherein the switching device includes an organic transistor on the substrate, the current of which is controlled by pressure.

16. A polymeric circuit including a printed polymeric switching device as claimed in claim 15.