Liquid ejecting head and liquid ejecting apparatus

A liquid ejecting head comprising:

• a nozzle;
• a piezoelectric material configured to be driven by a voltage applied to the piezoelectric material;
• an upper electrode located over the piezoelectric material and electrically coupled to the piezoelectric material;
• a lower electrode located under the piezoelectric material and electrically coupled to the piezoelectric material;
• upper-electrode wiring located over the upper electrode and configured to electrically couple the upper electrode to an external power supply;
• lower-electrode wiring configured to electrically couple the lower electrode to the external power supply;
• a wiring substrate electrically coupled to the upper-electrode wiring and the lower-electrode wiring;
• a vibration plate located under the lower electrode and configured to vibrate when the piezoelectric material is driven;
• and
• a pressure chamber substrate having a pressure chamber in which vibration of the vibration plate applies pressure to liquid to eject liquid through the nozzle and a first absorption chamber configured to absorb vibration of liquid propagated from the pressure chamber, wherein
• the upper electrode and the upper-electrode wiring are present over the first absorption chamber,
• the wiring substrate, the pressure chamber, and the first absorption chamber are arranged from a first side to a second side in this order as viewed in an up-down direction,
• the pressure chamber substrate further has a second absorption chamber configured to absorb vibration of liquid propagated from the pressure chamber and located on the first side of the wiring substrate as viewed in the up-down direction, and
• the liquid ejecting head further comprises:
• a plurality of individual flow paths each including the pressure chamber, the nozzle, the first absorption chamber, and the second absorption chamber;
• a supply-side common flow path communicating in common with the plurality of individual flow paths and configured to supply liquid to one of the first absorption chamber and the second absorption chamber;
• and
• a discharge-side common flow path communicating in common with the plurality of individual flow paths and configured to discharge liquid from the other of the first absorption chamber and the second absorption chamber.