Fingerprint sensing system and method utilizing edge-compensating structure
US10482307B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2018 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Sep 25, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1329
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fingerprint sensing system for sensing a fingerprint pattern of a finger, comprising: a sensor array including a plurality of electrically conductive sensing structures; read-out circuitry connected to each of the sensing structures for providing sensing signals indicative of a capacitive coupling between the sensing structures and the finger; first signal providing circuitry for providing a first time-varying voltage signal to at least a portion of the sensor array; at least one electrically conductive edge-compensating structure arranged outside the sensor array; and second signal providing circuitry for providing a second time-varying voltage signal to the at least one edge-compensating structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.