Patent ID: 8007336
Filing Date: 2011-08-30
Classification: H01J

Abstract:
1. A method for manufacturing a field emission element, comprising: providing an insulating substrate; forming at least one grid, a first electrode and a second electrode on the insulating substrate, wherein the first and second electrodes are within the at least one grid; covering the insulating substrate having the at least one grid, the first electrode and the second electrode with a carbon nanotube structure, wherein the carbon nanotube structure comprises a plurality of carbon nanotubes, the carbon nanotubes are successively extended from the second electrode to the first electrode, and substantially orientated along a same direction; and cutting the carbon nanotubes between the first electrode and the second electrode to disconnect from the first electrode and form a plurality of substantially parallel electron emitters on the second electrode in the at least one grid, wherein one end of each electron emitter is electrically connected to the second electrode and opposite end of each electron emitter is aligned towards the first electrode.