Commonly-poled piezoelectric device
US8279557B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2009 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Mar 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for poling piezoelectric devices comprises a plurality of thin-film components, a plurality of piezoelectric devices, a poling pad for poling the piezoelectric devices, a plurality of traces, and a plurality of current-limiting elements. The thin-film components are separated by dice lanes to form an array, and the piezoelectric devices are formed on the thin-film components. The traces connect the piezoelectric devices across the dice lanes in parallel to the poling pad. Each current-limiting element is connected in series with one of the piezoelectric devices, in order to limit current to individual piezoelectric devices that experience current-related failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.