Field emission devices using modified carbon nanotubes

Abstract

The present invention relates to a field emission device comprising an anode and a cathode, wherein said cathode includes carbon nanotubes nanotubes which have been subjected to energy, plasma, chemical, or mechanical treatment. The present invention also relates to a field emission cathode comprising carbon nanotubes which have been subject to such treatment. A method for treating the carbon nanotubes and for creating a field emission cathode is also disclosed. A field emission display device containing carbon nanotube which have been subject to such treatment is further disclosed.

1 - 79 . (canceled) 
     
     
         80 . A method for making a field emission cathode comprising the steps of:
 screen printing an ink onto a substrate, said ink comprising a carrier liquid and carbon nanotubes in as-made form or which have been subjected to energy, plasma, chemical, or mechanical treatment; and   evaporating said carrier liquid.   
     
     
         81 . A method for making a field emission cathode comprising the steps of:
 ink jet printing an ink onto a substrate, said ink comprising a carrier liquid and carbon nanotubes which have been in as-made form or which have been subjected to energy, plasma, chemical, or mechanical treatment; and   evaporating said carrier liquid.   
     
     
         82 . A method for making a field emission cathode comprising the steps of:
 spray painting an ink through a stencil onto a substrate, said ink comprising a carrier liquid and carbon nanotubes which have been subjected to energy, plasma, chemical, or mechanical treatment; and   evaporating said carrier liquid.   
     
     
         83 . A method for making a field emission cathode comprising the steps of:
 screen printing, ink-jet printing or spray painting an ink onto a substrate, said ink comprising a carrier liquid and carbon nanotubes in as-made form; and   subjecting said screen printed nanotubes to an energy, plasma, chemical, or mechanical treatment.   
     
     
         84 . A field emission cathode made by the method of  claim 83 .