Patent ID: 11865838
Assignee: SEIKO EPSON CORPORATION
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A piezoelectric device comprising:
a substrate on which a plurality of recess portions are formed;
a diaphragm provided on a side of one surface of the substrate; and
a piezoelectric actuator having a first electrode, a piezoelectric body layer, and a second electrode which are stacked in a first direction on a side of a surface opposite to the substrate of the diaphragm, wherein
when one area far from an end portion of the second electrode is a first area, and one area near the end portion of the second electrode is a second area, of two areas of the second electrode in a second direction intersecting the first direction, a (100) plane orientation ratio of the piezoelectric body layer in the second area is lower than a (100) plane orientation ratio of the piezoelectric body layer in the first area, and
one end of the second area of the piezoelectric body layer is positioned between the first electrode and the second electrode in the first direction.