Patent ID: 7601043

Claim:
A method for manufacturing a FED with an integrated triode structure, the method comprising: (a) forming, on a substrate, a cathode layer, a gate insulating layer, a gate electrode layer, and an aluminum layer, in order; (b) converting the aluminum layer to an alumina layer using anodic oxidation, until the alumina layer has sub-microholes in a regular arrangement pattern and a barrier layer remained at the lower part of the sub-microholes; (c) extending the depth of the sub-microholes in the alumina layer to the surface of the cathode layer; (d) forming emitters in the sub-microholes, the emitters being adhered to the cathode layer; (e) forming a phosphor layer on the alumina layer; and (f) forming an anode layer on the phosphor layer under vacuum atmosphere.