Invention Publication
- Patent Title: LAMINATED PIEZOELECTRIC ELEMENT AND ELECTROACOUSTIC TRANSDUCER
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Application No.: US18410208Application Date: 2024-01-11
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Publication No.: US20240147167A1Publication Date: 2024-05-02
- Inventor: Tetsu MIYOSHI
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Priority: JP 18210946 2018.11.08 JP 19014089 2019.01.30 JP 19188909 2019.10.15
- The original application number of the division: US17314171 2021.05.07
- Main IPC: H04R17/00
- IPC: H04R17/00 ; B32B3/04 ; B32B7/12 ; B32B27/20 ; B32B27/30 ; H04R1/06 ; H04R7/06 ; H10N30/50 ; H10N30/857 ; H10N30/87

Abstract:
An object is to provide a laminated piezoelectric element capable of preventing a short circuit between adjacent piezoelectric films and an electroacoustic transducer using the laminated piezoelectric element. The object is solved by laminating a plurality of layers of piezoelectric films polarized in a thickness direction, in which a piezoelectric layer is interposed between two thin film electrodes, and causing polarization directions of the adjacent piezoelectric films to be opposite to each other.
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