Piezoelectric sensor and manufacturing method thereof, method for recognizing fingerprint, and electronic device
US12016249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2020 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Jun 15, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/871
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A piezoelectric sensor and a manufacturing method thereof, a method for recognizing a fingerprint, and an electronic device are disclosed. The piezoelectric sensor includes a first electrode layer and a second electrode layer which are opposite to each other and a piezoelectric layer. The piezoelectric layer is between the first electrode layer and the second electrode layer and includes a plurality of piezoelectric units arranged at intervals and an insulation layer between adjacent piezoelectric units of the plurality of piezoelectric units. The first electrode layer includes a plurality of sub-electrodes corresponding to the plurality of piezoelectric units, or the second electrode layer includes a plurality of sub-electrodes corresponding to the plurality of piezoelectric units; or both the first electrode layer and the second electrode layer include a plurality of sub-electrodes corresponding to the plurality of piezoelectric units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.