Piezoelectric element

US10770641B2 · kind B2 · utility

Assignee

• TDK CORPORATION · JP

Inventors

• Yoshiki Ohta · Tsurugashima, JP
• Hideya Sakamoto · Tokyo, JP
• Kazushi Tachimoto · Tokyo, JP
• Nobuo Furukawa · Tokyo, JP
• Akihiro Takeda · Shizuoka, JP

Key dates

• Filing date: Sep 29, 2017
• Grant date: Sep 8, 2020
• Expiry date: Aug 11, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10N30/877

Abstract

A piezoelectric element includes first and second electrodes, a first piezoelectric body layer, and a plurality of first through-hole conductors. The first and second electrodes oppose each other. The first piezoelectric body layer is disposed between the first electrode and the second electrode. The plurality of first through-hole conductors penetrates the first piezoelectric body layer and is connected to the first electrode and the second electrode. When seen in an opposing direction of the first and second electrodes, the plurality of first through-hole conductors is arrayed in a matrix.