INK EJECTION DEVICE INCLUDING A SILICON CHIP HAVING A HEATER STACK POSITIONED OVER A CORRESPONDING POWER TRANSISTOR

摘要

A silicon chip has a plurality of inkjetting structures. Each ink jetting structure of the plurality of ink jetting structures includes a heater stack having an electrical heater element. A power transistor is electrically connected to the electrical heater element. A planarization layer is interposed between the power transistor and the heater stack. The planarization layer has a planar base surface on which the heater stack is formed.