ELECTROHYDRODYNAMIC PRINTING HEAD OF A DROP-ON-DEMAND DRIVING METHOD AND A MANUFACTURING METHOD THEREOF, CAPABLE OF REDUCING MANUFACTURING COSTS AND TIME

摘要

PURPOSE: An electrohydrodynamic printing head of a drop-on-demand driving method and a manufacturing method thereof are provided to implement an ultra fine pattern which discharges droplet below 5 micron through a nozzle of 100 micron by using electrohydrodynamic power.;CONSTITUTION: An electrohydrodynamic printing head of a drop-on-demand driving method includes a hole(20), a nozzle(21), a body(23), a micro heater(24), and an electrode(25). The fluid is supplied to the printing head through the hole. The fluid including conductive particle is spread through the nozzle with electrohydrodynamic pressure. The body is comprised of a channel(22) which connects the hole to the nozzle. The micro heater is formed in the channel. The micro heater is positioned on the upper side of the nozzle and controls the meniscus of the fluid in the nozzle. An electrode is formed on the nozzle and forms an electric field for electrohydrodynamic spread.;COPYRIGHT KIPO 2011