Piezoelectric element
US10644220B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2017 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Jun 20, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/871
Abstract
A piezoelectric element includes a piezoelectric body layer, a first electrode, a second electrode, a third electrode, and a first through-hole conductor. The piezoelectric body layer has rectangular first and second principal surfaces opposing each other, and includes a piezoelectric material. The first electrode is provided on the first principal surface. The second electrode is provided on the first principal surface in such a way that the second electrode is separated from the first electrode. The third electrode is provided on the second principal surface in such a way that the third electrode opposes the first electrode. The through-hole conductor penetrates the piezoelectric body layer and is connected to the second electrode and the third electrode. The first electrode has a round corner when seen in an opposing direction of the first and second principal surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.