Method for producing liquid-ejection-head substrate and liquid-ejection-head substrate produced by the same

摘要

A method for producing a liquid-ejection-head substrate includes providing a substrate having an energy-generating element and a pad, the pad including a wiring layer, the wiring layer in the pad having a relatively thick portion and a relatively thin portion and performing electrical inspection by applying a contact probe to the relatively thin portion of the wiring layer in the pad.

主权项

1. A method for producing a liquid-ejection-head substrate including a substrate, an energy-generating element provided on the substrate and configured to energize liquid and cause ejection of the liquid, and a pad provided on the substrate and electrically connected to the energy-generating element, the method comprising:
providing the substrate having the energy-generating element and the pad, the pad including a wiring layer, the wiring layer having a relatively thick portion and a relatively thin portion; and performing electrical inspection by applying a contact probe only to the relatively thin portion of the wiring layer.