Patent ID: 8672458

Claim:
A liquid ejecting head comprising: pressure chambers that communicate with nozzle openings for ejecting liquid; and piezoelectric actuators configured to cause pressure variations in the pressure chambers so as to discharge liquid droplets through the nozzle openings; wherein the piezoelectric actuators comprise individual electrodes that are independently disposed so as to correspond to the pressure chambers, a common electrode that is shared by a plurality of the piezoelectric actuators, and a piezoelectric layer that is provided between the common electrode and the individual electrodes, wherein the common electrode has defines an X direction, a Y direction generally transverse to the X direction, and a Z direction generally transverse to both the X and Y directions, and wherein the common electrode comprises: a plurality of individual sections extending along the X direction; a plurality of slits dividing the individual sections and extending along the X direction; and a base section joining at least one X-direction end of the individual sections; wherein the individual sections are arranged so as to correspond to the pressure chambers, and wherein the individual sections on a base section side gradually widen in the Y direction, and wherein the common electrode further comprises: thin film sections that are provided at the individual sections; and a thick film section that is provided at the base section, wherein a film thickness in the Z direction gradually increases from the thin film sections towards the thick film section in a region between the thin film sections and the thick film section.