Piezoelectric device
US11784629B2 · kind B2 · utility
0Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2021 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Feb 24, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2003/023
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A piezoelectric device includes a membrane portion and a piezoelectric layer made of single crystal of a piezoelectric body. At least a portion of the piezoelectric layer is included in the membrane portion. An electrode is provided on a surface of the piezoelectric layer in the membrane portion. The piezoelectric layer includes a first polarization region in a first polarization state and a second polarization region in a second polarization state, and the first polarization region and the second polarization region are spaced apart from each other in a thickness direction or an in-plane direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.