Piezoelectric member, ultrasonic oscillation element, ultrasonic probe, ultrasound diagnostic system, and method for producing piezoelectric member
US11575080B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2018 |
| Grant date | Feb 7, 2023 |
| Priority date | — |
| Expiry date | May 22, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/54
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A piezoelectric member including metal electrodes with improved adhesiveness to piezoelectric elements is to be provided. A piezoelectric member 102 includes a piezoelectric element 21, and a pair of electrodes 41, 42 respectively formed on a pair of opposing surfaces 21b, 21c of the piezoelectric element 21. The electrodes 41, 42 includes: a base film 41a that is formed on the opposing surfaces 21b, 21c of the piezoelectric element 21 and contains a thiol group; a metal adhesive film 41b formed on the base film 41a; and an electrode film 41c that is formed on the metal adhesive film 41b and is for applying voltage to the piezoelectric element 21. The metal adhesive film 41b is formed with a different material from the electrode film 41c, and has a thickness of 1 to 10 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.