| 摘要 |
A piezoelectric element including a first electrode serving as an individual electrode, a piezoelectric layer, and a second electrode serving as a common electrode is attached on a face of a flow path substrate via a vibrating plate. A piezoelectric active portion defined by the first electrode and the second electrode serving as a substantial driver of the piezoelectric element is provided in a region opposing the pressure chamber. An opening formed by removing the second electrode and the piezoelectric layer is provided in a region of the piezoelectric element opposing the partition wall. A wiring electrode and the second electrode provided on the flow path substrate are connected via a common lead electrode provided on the piezoelectric active portion, and the common lead electrode is provided at least on the partition wall inside the opening.
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