Piezoelectric transducer and sound-generating device
US5105116A · kind A · utility
14Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | May 30, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R17/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A piezoelectric transducer useful for example as a sound source or a strain detector includes a ferroelectric liquid crystal sealed between two baseplates with electrodes and alignment layers on the inner facing surfaces of the baseplates. One of the baseplates is thicker than the other, or is of a different material, so that the two baseplates have different flexural rigidity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.