Energy-trapping-type piezoelectric resonance device
US4900970A · kind A · utility
72Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Jul 6, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/178
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An energy trapping type piezoelectric resonance device utilizing the mode of thickness extensional vibration comprises a plate-shaped body of a piezoelectric material and three or more electrodes provided to be opposed to each other through peizoelectric material layers in the direction of thickness of the body. At least one of the electrodes is provided to be smaller in area than the major surfaces of the body, to be capable of energy trapping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.