Kolja Vogel,Robert Müller,Ond{hacek over (r)}ej Konopka,Radim {hacek over (S)}mat
申请号：
US15748943
公开号：
US10664684B2
申请日:
2017.06.02
申请国别(地区):
US
年份:
2020
代理人:
摘要：
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.
