Patent ID: 8876261

Claim:
An actuator comprising: a vibration plate; a plurality of driving units disposed in a direction perpendicular to a predetermined direction, the plurality of driving units being formed on the vibration plate, wherein each driving unit includes: a first conductive layer formed on an upper surface of the vibration plate and extending in the predetermined direction; a piezoelectric layer covering the first conductive layer; and a second conductive layer formed on an upper surface of the piezoelectric layer; a metal layer formed on the upper surface of the vibration plate and on an upper surface of each second conductive layer of the plurality of driving units so as to intersect with and be electrically connected to each second conductive layer; an electrode electrically connected to the metal layer; and a plurality of lead electrodes, each of which electrically connects to the first conductive layer of an individual driving unit of the plurality of driving units through an opening in the piezoelectric layer of the individual driving unit.