Patent ID: 8288082

Claim:
A method of fabricating a triode-structure field-emission device, comprising sequentially forming a cathode, an insulating layer, and a gate metal layer on a substrate, forming a first resist pattern having a first opening on the gate metal layer, forming a second resist pattern having a second opening on the first resist pattern, wherein the second opening is smaller than the first opening, sequentially etching the gate metal layer and the insulating layer using the first resist pattern as a first mask pattern to form a gate electrode having a first hole and an insulating layer having a second hole, wherein the first hole and the second hole correspond to the first opening, forming a catalyst layer on the second resist pattern and on a portion of the cathode exposed through the first hole and the second hole using the second resist pattern as a second mask pattern, removing the first resist pattern, the second resist pattern, and the catalyst layer formed on the second resist pattern, and forming an emitter on the catalyst layer in the second hole.