Piezoelectric elements and piezoelectric actuators

Title:

Piezoelectric elements and piezoelectric actuators

Document Type and Number:

Japanese Patent JP6361640

Kind Code:

B2

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.

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Inventors:

Yoshio Ikeda
Kazuo Nagata
Narihito Ono
Shogo Saito

Application Number:

JP2015233748A

Publication Date:

July 25, 2018

Filing Date:

November 30, 2015

Export Citation:

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Assignee:

tdk Corporation

International Classes:

H01L41/047; G11B5/596; G11B21/10; G11B21/21; H01L41/053; H01L41/083; H01L41/09; H02N2/00

Domestic Patent References:

JP2011212901A
JP2003215152A

Foreign References:

WO2012117831A1

Attorney, Agent or Firm:

Yoshiki Hasegawa
Yoshiki Kuroki
Takashi Mikami

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