Sensor pixel circuitry for fingerprint identification
US10049253B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2016 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | Aug 15, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1329
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one aspect, a fingerprint sensor device for fingerprint detection includes an array of sensor pixels to capacitively couple with a touched portion of a finger to form an array of fingerprint associated capacitors having capacitive values indicative of a fingerprint. Each sensor pixel includes an output terminal configured to output an output signal that indicates a local capacitive coupling with the touched portion of the finger as part of fingerprint data for fingerprint detection; a capacitive sensing layer including an electrically conductive material that can be capacitively coupled to a local part of the touched portion of the finger, forming a fingerprint associated capacitor, the capacitive sensing layer operable to be coupled to the output terminal to cause the output signal; an integrated circuit layout layer that is electrically conductive; a fingerprint voltage generator; and a layout voltage generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.