Bimorph-type piezoelectric film
US11424402B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2017 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Dec 25, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/204
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention addresses the problem of providing a bimorph-type piezoelectric film that is less susceptible to the influence of pyroelectric noise resulting from temperature changes, and that makes it possible to provide a pressure-sensitive sensor or the like. The present invention provides a bimorph-type piezoelectric film comprising a first pyroelectric film having piezoelectric anisotropy in an in-plane direction, and a second pyroelectric film having piezoelectric anisotropy in an in-plane direction, the first pyroelectric film and the second pyroelectric film being disposed in such a manner that their surfaces on which electric charges of the same polarity are generated by a temperature increase are each outward-facing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.