公开(公告)号：US20170155033A1

公开(公告)日：2017-06-01

申请号：US15363800

申请日：2016-11-29

Applicant: TDK CORPORATION

Inventor： Yoshiki IKEDA ,  Kazuo NAGATA ,  Shuto ONO ,  Syogo SAITO

IPC: H01L41/09 ,  G11B5/48 ,  H01L41/047

Abstract: A piezoelectric element includes a piezoelectric body, a first electrode, a second electrode, a third electrode, and a first through hole conductor. The piezoelectric body includes first and second main surfaces opposing each other, and first and second end surfaces opposing each other. The first electrode is disposed on the first main surface. The second electrode is disposed apart from the first electrode on the first main surface. The third electrode is disposed in the piezoelectric body to oppose the first electrode. The first through hole conductor is connected to the second and third electrodes. The piezoelectric body includes an active region and an inactive region. The active region includes a region from the first electrode to the third electrode. The inactive region includes a region from the third electrode to the second main surface.