Patent ID: 7527988
Filing Date: 2009-05-05
Classification: B82Y,H01J,Y10S

Abstract:
1. A method of fabricating a field emission display device which has a triode-structure composed of an cathode layer formed on a substrate, an insulation layer formed on the cathode layer such as to have a well, and a gate electrode formed on the insulation layer such as to have an opening corresponding to the well, the method comprising: (a) depositing a resistance layer for blocking light on the surface of the gate electrode and the inner wall of the well and patterning the resistance layer to expose the cathode layer at the bottom of the well; (b) depositing a protective layer on the resistance layer so as to surround the insulation layer and the gate electrode and patterning the protective layer such that the protective layer remains only on the tops of the insulation layer and the gate electrode; (c) depositing carbon nanotube paste such as the carbon nanotube paste covers the protective layer and fills the well and the opening; (d) radiating light at the rear of the substrate to expose the carbon nanotube paste to the light and performing development to lift off non-exposed carbon nanotube paste and the protective layer, thereby forming a carbon nanotube column; and (e) firing the carbon nanotube column to lower it and performing surface treatment, thereby forming a field emitting source in which carbon nanotube tips protrude from the surface of the carbon nanotube column.