Patent ID: 7942714

Claim:
A method of manufacturing a field emission device, the method comprising: sequentially forming a cathode electrode, an insulating layer, and a gate aterial layer on a substrate; forming a metal sacrificial layer on an upper surface of the gate material layer; forming a through hole to expose the insulating layer in the metal sacrificial layer and the gate material layer; forming an emitter hole to expose the cathode electrode in the insulating layer exposed through the through hole; forming a gate electrode by etching the gate material layer constituting an upper wall of the emitter hole through the through hole; forming an emitter of carbon nanotubes (CNTs) on an upper surface of the cathode electrode located below the through hole using a dispersion solution including the CNTs; and forming a planar adhesion layer between the upper surface of the cathode electrode and the emitter of CNTs to fix the CNTs on the upper surface of the cathode electrode.