Button device using piezoelectric element
US10103313B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2016 |
| Grant date | Oct 16, 2018 |
| Priority date | — |
| Expiry date | Jul 11, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/9651
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A button device includes a piezoelectric element which includes a piezoelectric body with one surface on which a first external electrode and a second external electrode are formed and a plate with one surface attached to the other surface of the piezoelectric body, a supporting plate disposed on the one surface of the piezoelectric body, a cover disposed on the other surface of the plate, a first spacer provided between an edge portion of the one surface of the plate and the supporting plate, a second spacer provided between at least a part of an edge portion of the other surface of the plate and the cover to provide a separation space between the plate and the cover, and a dot provided in the separation space to transfer an external force to the piezoelectric element or to transfer a vibration of the piezoelectric element to the cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.