Vibrator with low power consumption, vibration type actuator, and electronic apparatus
US11038440B2 · kind B2 · utility
1Cited by
1References
10Claims
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Key dates
| Filing date | Apr 24, 2018 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Aug 28, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2205/0061
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibrator which is constructed by bonding a piezoelectric element and an elastic body together via a bonding layer. The piezoelectric element has a piezoelectric ceramic and electrodes. The bonding layer has an unbonded region that is located close to a nodal line of a vibration in a primary out-of-plane vibration mode when the vibration is excited in the vibrator, and in the unbonded region, the piezoelectric element and the elastic body are not bonded together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.