Multilayer piezoelectric element

US7042142B2 · kind B2 · utility

Assignee

• TDK CORPORATION · JP

Inventors

• Satoshi Sasaki · Ozu, JP
• Shinya Syoji · Yurihonjo, JP
• Kazushi Tachimoto · Tokyo, JP

Key dates

• Filing date: Mar 1, 2004
• Grant date: May 9, 2006
• Expiry date: Mar 9, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10N30/50

Abstract

A multilayer piezoelectric element has at least one first piezoelectric layer and at least one second piezoelectric layer. First internal electrodes are separately arranged on each first layer, and second internal electrodes are arranged on each second layer. The first and second layers are laminated alternately so that the first and second internal electrodes overlap in one-to-one correspondence.