Liquid ejecting head

A liquid ejecting head comprising:

• a piezoelectric element;
• a diaphragm that vibrates by being driven by the piezoelectric element;
• and
• a pressure chamber substrate that has a pressure chamber coupled to a nozzle and contributing to ejection of a liquid by applying pressure on the liquid through vibration of the diaphragm, and a dummy pressure chamber not contributing to ejection of the liquid, wherein
• the pressure chamber substrate, the diaphragm and the piezoelectric element are laminated in this order in a lamination direction,
• each of the pressure chamber and the dummy pressure chamber opens on a second surface opposite to a first surface facing the diaphragm of the pressure chamber substrate, and is a recess having a depth in a direction toward the diaphragm along the lamination direction;
• the pressure chamber and the dummy pressure chamber are arranged in an arrangement direction perpendicular to the lamination direction;
• and
• a first depth as the depth of the dummy pressure chamber is shallower than a second depth as the depth of the pressure chamber.