Patent · US Active

Fingerprint sensor with liveness detection

US11194992B2 · kind B2 · utility

0Cited by

2References

20Claims

0Family size

Assignee

Next Biometrics Group ASA · NO

Inventors

Kolja Vogel · Birkenfeld, DE
Robert Müller · Dunningen, DE
Ondrej Konopka · Bohemia, CZ
Radim Smat · Praha, CZ

Key dates

Filing date	Apr 28, 2020
Grant date	Dec 7, 2021
Priority date	—
Expiry date	May 6, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG06V40/1382
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A fingerprint sensor device with built-in liveness detection capabilities includes: an area sensor disposed on a top surface of a substrate; a stiffener disposed below a bottom surface of the substrate; a printed circuit making electrical connection to the sensor disposed below the stiffener; and a light source and a photodetector. At least one of the light source and photodetector is disposed on the printed circuit below the area sensor. The stiffener includes at least one through-hole located with respect to the light source or photodetector to allow light from the light source to transmit through the stiffener towards a finger located on the area sensor or to allow light reflected from the finger to pass through the stiffener to the photodetector.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.