A carbon nanotube paste with high emission currnet for the X-ray tube

Field emission properties of CNTs(carbon nanotubes) have been investigated in the various field, such as flat panel display and x-ray sources. Especially, the x-ray tube which fabricated using the CNTs can be operated with low power consumption compare with filament-based x-ray tubes. The cold cathode - CNTs- can be operated at the lower voltage and the electron which coming out from the CNTs can be controlled easilly by focus electrode. And for high emission current, the device should be stable at the high operate voltage. The gate electrode-mesh-type electrode- can be layered by using glass frit and firing process. At this point, the mesh structure can be controlled for the higher adhesion force which is for the emission stability at the high voltage. The glass frit could be act effectively between mesh electrode and insulating layer because of the designed mesh structure.