Patent ID: 11910717
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B  H | IPC H

Claim 2:
3. The piezoelectric actuator according to claim 2, further comprising:
a third piezoelectric layer disposed opposite to the first electrode layer with respect to the second piezoelectric layer in the first direction; and
a third electrode layer disposed between the second piezoelectric layer and the third piezoelectric layer in the first direction,
wherein the second piezoelectric layer has a plurality of third through holes,
wherein the second electrode layer and the third electrode layer are electrically connected to each other via the plurality of third through holes of the second piezoelectric layer, and
wherein, in the second piezoelectric layer, the plurality of third through holes are positioned in an area that overlaps, in the first direction, an area where the first group is positioned and not overlap, in the first direction, an area where the second group is positioned.