Patent ID: 8779646

Claim:
An actuator comprising: a supporting portion including a first electrode, a second electrode disposed opposite the first electrode, and a part of a planar electrolyte member disposed therebetween, the supporting portion having terminals configured to apply a voltage between the first and second electrodes; a displacement portion configured to be displaced as a voltage applied between the first and second electrodes causes ions in the electrolyte member to migrate; and an intermediate portion disposed between the supporting portion and the displacement portion, the intermediate portion including a third electrode on the electrolyte member and a conductive connecting member configured to supply a current to the third electrode, the third electrode including a plurality of linear members and a conductive material, the linear members having major axes thereof extending in a direction crossing a direction from the supporting portion toward the displacement portion, the third electrode having a plurality of conduction paths through which a current flows in the crossing direction, the conductive connecting member being electrically connected to one of the first and second electrodes, the conductive connecting member electrically connecting the conduction paths together.