Patent ID: 7845770

Claim:
A liquid droplet ejecting head, comprising: a plurality of pressure chambers in which a liquid is filled; nozzles communicating respectively with the plurality of pressure chambers, and ejecting the liquid as liquid droplets; a vibrating plate that forms portions of the plurality of pressure chambers; a piezoelectric body disposed above the vibrating plate and able to displace the vibrating plate; individual electrodes formed respectively for each of the plurality of pressure chambers at one of a bottom surface or a top surface of the piezoelectric body, the individual electrodes being one polarity of the piezoelectric body; a common electrode, formed at the other surface of the one of a bottom surface or a top surface of the piezoelectric body, so as to extend over the plurality of pressure chambers, the common electrode being the other polarity of the piezoelectric body; electrical connecting portions contacting predetermined regions of the individual electrodes, and electrically connected to the individual electrodes; first electrode members formed on a same surface as the common electrode, and disposed at a side opposite a side at which the predetermined regions are located, with the piezoelectric body sandwiched therebetween, and electrically isolated from the common electrode; and a second electrode member which is formed on a same surface as the individual electrodes, and is electrically isolated from the individual electrodes, and is electrically connected to the common electrode.