BIOMETRIC IMAGE SENSING

摘要

An novel sensor is provided having a plurality of substantially parallel drive lines configured to transmit a signal into a surface of a proximally located object, and also a plurality of substantially parallel pickup lines oriented proximate the drive lines and electrically separated from the pickup lines to form intrinsic electrode pairs that are impedance sensitive at each of the drive and pickup proximal locations.

主权项

1. A biometric sensor, comprising:
a plurality of drive lines; a plurality of pickup lines oriented transversely to the drive lines and separated from the drive lines by a substrate; an integrated circuit comprising drive electronics and detection electronics, wherein the substrate is disposed between the pickup lines and the integrated circuit, wherein the drive electronics comprise switches configured to multiplex the drive lines to a signal source, and wherein the detection electronics comprise one or more differential amplifiers and switches configured to multiplex the pickup lines to the one or more differential amplifiers; and vias extending through the substrate for providing an electrical connection between the pickup lines and the integrated circuit.