Piezoelectric element, process for producing the piezoelectric element, and head for ink-jet printer using the piezoelectric element
US6774541B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2000 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Feb 6, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/5445
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An element having certain superior piezoelectric characteristics at all times and of which process control in production of the element is relatively easy. In a piezoelectric element in which electrodes 6, 8 are arranged on both face sides of a piezoelectric film 7 respectively, the piezoelectric film is provided with an oxide layer 7a containing 0 or not more than 15 weight percent of Pb arranged on a face of the piezoelectric film, the face being in contact with the electrode, and the oxide layer being formed of a composite oxide expressed by a chemical formula ABO3 or of a solid solution of one or not less than two kinds of composite oxides respectively expressed by the chemical formula ABO3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.