Multi-layer piezoelectric transducer with inactive layers
US8780503B2 · kind B2 · utility
36Cited by
15References
20Claims
0Family size
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Key dates
| Filing date | Oct 16, 2012 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Dec 6, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/2043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for positioning a control object, such as a microactuator used to position a read/write transducer adjacent a data storage medium. In accordance with some embodiments, a piezoelectric transducer (PZT) element is adapted to induce rotational displacement of the control object in a bending mode of operation. The PZT element has a plurality of piezoelectric material layers and a plurality of electrically conductive layers interposed between the piezoelectric material layers. The piezoelectric material layers include a first subset of active layers and at least one non-active layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.