| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jetting head and a liquid jetting device capable of achieving reduction in size by making the width of wiring narrow without increasing electric resistance.SOLUTION: A liquid jetting head includes: a flow passage forming substrate 10 in which a plurality of pressure generating chambers 12 communicating with a nozzle opening 21 for jetting a liquid are provided side by side, and a piezoelectric actuator 300 for imparting pressure to the pressure generating chamber 12 is provided; and a protection substrate 30 bonded to the flow passage forming substrate 10. The piezoelectric actuator 300 includes: an individual electrode 60 provided at every active part 310, which becomes a substantial driving part; a common electrode 80 which is common to the plurality of active parts 310; and a piezoelectric layer 70 provided between the individual electrode 60 and the common electrode 80. Wiring connected to the common electrode is formed at the flow passage forming substrate 10. Auxiliary wiring 95 connected to the wiring is formed at the protection substrate 30. The auxiliary wiring 95 is electrically connected to the wiring. |
