Piezoelectric sensor and piezoelectric device
US10784436B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 2018 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | May 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/88
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transmitting piezoelectric element and receiving piezoelectric elements and are arranged on a vibrating plate opposed to each opening of openings of a piezoelectric sensor, and, when an external force is applied in a vertical direction with respect to the vibrating plate opposed to the openings, a region which has a maximum principal stress which is a maximum value of the stress of the vibrating plate is a first region, and a region which has a minimum principal stress which is a minimum value of the stress of the vibrating plate is a second region, the receiving piezoelectric elements and are arranged in the first region and the transmitting piezoelectric element is arranged in the second region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.