Organic field emission device

• US 20050104499A1
• Filed: 12/22/2004
• Published: 05/19/2005
• Est. Priority Date: 11/01/2001
• Status: Abandoned Application

• Current Assignee: Massachusetts Institute of Technology
• Original Assignee: Massachusetts Institute of Technology
• Inventors: Kymissis, Ioannis, Akinwande, Akintunde Ibitayo
• Application Number:
  US11/020,615
• Publication Number:
  US 20050104499A1
• Time in Patent Office: Days
• US Class Current: 313/311
• CPC Class Codes: H01J 1/304 Field-emissive cathodes
• CPC Class Codes: H01J 1/3044 Point emitters
• CPC Class Codes: H01J 2201/30446 characterised by the emitter material
• CPC Class Codes: H01J 9/025 of field emission cathodes

Abstract

A patterned field emission device fabricated using conducting or semiconducting organic materials is described.

Claims

1-6. -6. (canceled)

7. A method of fabricating a field emission device comprising:

providing a substrate; and

patterning on the substrate one or more organic field emitter structures.

8. The method of claim 7 wherein the organic field emission structures comprise one or more micro-tips.

9. The method of claim 7 wherein patterning comprises:

disposing on the substrate a filter membrane;

dispensing an organic composite solution over the filter membrane;

drying the organic composite solution; and

removing the filter membrane from the substrate, thereby forming the organic field emitter structures.

10. The method of claim 9 wherein the filter membrane is a polycarbonate filter membrane.

11. The method of claim 9 wherein the organic composite solution comprises a polypyrrole composite solution.

12. The method of claim 11 wherein the polypyrrole composite solution comprises a doped polypyrrole and polyvinyl alcohol solution.

13. The method of claim 7 wherein patterning comprises using electropolymerization.

14. The method of claim 7 further comprising:

disposing above the micro-tips a gated electrode structure.

15. The method of claim 7 further comprising:

disposing between the substrate and each organic field emitter structure a transistor to provide gated control to the organic field emitter structure.

16. The method of claim 15 wherein the transistor is an organic thin film transistor.

17-20. -20. (canceled)