Patent ID: 6935023

Claim:
A method of forming an electrical connection for a printhead die, the printhead die comprising an array of printing elements and an ink refill channel, each of the printing elements comprising a nozzle chamber, a firing resistor, a feed channel, a nozzle opening and a wiring line, the nozzle opening for each printing element being formed along a first surface of the printhead die, the method comprising: forming a trench in a second surface of the printhead die opposite the first surface; depositing a conductive material along a portion of the trench; forming an opening extending from the first surface of the printhead die to the conductive material; depositing a conductive material in the opening; and depositing a conductive trace along the first surface of the printhead die to electrically couple the conductive material of the opening and the trench to the wiring line of one of the printing elements.