Ultrasonic fingerprint sensor in display bezel
US9984271B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2014 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Feb 7, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1306
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic device that includes an enclosure having an external surface and a first array of ultrasonic transducers arranged along a first direction and a second array of ultrasonic transducers arranged along a second direction. The first array of ultrasonic transducers may be configured to produce a surface wave along the external surface. A set of scattered waves may be created by the touch on the external surface. The second array of ultrasonic transducers may be configured to receive a portion of the set of scattered waves and produce an output. The device may also include a processing unit that is configured to identify the touch using the output. The processing unit may be further configured to create a reconstruction of at least a portion of a fingerprint associated with the touch on the cover, and to identify the fingerprint using the reconstruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.