Patent ID: 7506442

Claim:
A method of fabricating an inkjet printhead comprising: sequentially forming an insulating layer, a heater, and an electrode on a substrate, and forming a passivation layer on the insulating layer to cover the heater and the electrode; forming a trench that exposes the substrate by sequentially etching the passivation layer and the insulating layer; forming a sacrificial layer to form an ink chamber on the passivation layer to fill the trench; forming a seed layer to provide a plating on the sacrificial layer and the passivation layer; forming a nozzle mold on the seed layer positioned over the heater; forming a plating layer on the seed layer to a predetermined thickness; forming an ink feed hole by etching a rear surface of the substrate to expose the sacrificial layer filled in the trench; forming a nozzle by sequentially removing the nozzle mold and the seed layer positioned under the nozzle mold; and forming the ink chamber by removing the sacrificial layer exposed by the nozzle and the ink feed hole.