Energy-trapping-by-frequency lowering-type piezoelectric resonance device
US4918350A · kind A · utility
23Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1988 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Jun 27, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/853
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A piezoelectric resonance device of the energy-trapped type utilizing a harmonic wave of the thickness extensional vibration mode, wherein three or more electrodes are so disposed that they are overlapped with each other through the piezoelectric layer in the direction of the thickness and each of the electrodes is comprised of a vibrating electrode portion for energy-trapping and a conducting portion for connecting the vibrating electrode to the side edge of the piezoelectric layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.