Patent ID: 7607763

Claim:
A droplet discharging head, comprising: a vibration plate; a partition wall attached to a first surface of the vibration plate, the partition wall defining a plurality of containing chambers, each of the plurality of containing chambers being configured to hold a liquid material and to eject the liquid material from a nozzle; a first piezoelectric element attached to a second surface of the vibration plate, the first piezoelectric element overlapping with one of the plurality of containing chambers, the first piezoelectric element including a plurality of first piezoelectric material layers and a plurality of first electrode layers, the plurality of first piezoelectric material layers and the plurality of a first electrode layers being laminated alternately; and a second piezoelectric element attached to the second surface of the vibration plate, the second piezoelectric element being adjacent to the first piezoelectric element, the second piezoelectric element overlapping with a first portion of the partition wall, a first part of the vibration plate being interposed between the second piezoelectric element and the first portion of the partition wall, the second piezoelectric element including a plurality of second piezoelectric material layers and a plurality of second electrode layers, the plurality of second piezoelectric material layers and the plurality of a second electrode layers being laminated alternately, a polarization direction of odd-numbered one of the plurality of first piezoelectric material layers being opposite to a polarization direction of odd-numbered one of the plurality of second piezoelectric material layers.