Liquid ejecting head, liquid ejecting head unit, and liquid ejecting apparatus

A liquid ejecting head comprising:

• a flow path substrate including a plurality of pressure chambers communicating with nozzle openings through which a liquid is ejected, the pressure chambers being defined by a partition wall so as to be aligned in a first direction;
• and
• a piezoelectric element including a first electrode provided on a face of the flow path substrate via a vibrating plate, a piezoelectric layer provided on the first electrode, and a second electrode provided on the piezoelectric layer,
• wherein the first electrode of the piezoelectric element serves as an individual electrode corresponding to each of the pressure chambers,
• the second electrode serves as a common electrode continuously formed along a plurality of piezoelectric elements,
• the piezoelectric element includes a piezoelectric active portion defined by the first electrode and the second electrode and substantially acting as a driver of the piezoelectric element, the piezoelectric active portion being located in a region opposing the pressure chamber,
• an opening formed by removing a portion of the second electrode and the piezoelectric layer is provided in a region of the piezoelectric element opposing the partition wall, the opening being narrower than the piezoelectric active portion in a second direction intersecting with the first direction and wider than a thickness of the partition wall in the first direction,
• a wiring electrode extending in a direction in which the piezoelectric active portions are aligned is provided at least on one side in the second direction of a row of the piezoelectric active portions aligned, and
• the wiring electrode and the second electrode are connected via a common lead electrode provided between the piezoelectric active portions, and the common lead electrode is provided at least on a portion of the partition wall inside the opening.