Piezoelectric element, piezoelectric actuator, and ink jet recording head
US7456548B2 · kind B2 · utility
9Cited by
11References
10Claims
0Family size
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Key dates
| Filing date | Apr 30, 2007 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Jun 18, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/2047
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A piezoelectric element having a piezoelectric film and one pair of electrodes being in contact with the piezoelectric film on a substrate, wherein the piezoelectric film has a structure in which a lead-containing piezoelectric film and a lead-free piezoelectric film are laminated, and in the piezoelectric film, a layer furthest from the substrate and a layer closest to the substrate are lead-free piezoelectric films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.