BIOMETRIC RECOGNITION APPARATUS

摘要

A biometric recognition apparatus includes a substrate, a plurality of sensing electrodes, a plurality of traces, at least one shielding electrode, at least one insulating layer, and at least one fingerprint recognition IC. The sensing electrodes are arranged on one side of the substrate with at least one row to detect fingerprint information. Each trace is electrically coupled to at least one sensing electrode. The shielding electrodes are arranged above the traces to avoid the interference from fingers or external noise. The insulating layer is arranged between the shielding electrodes and the traces. The fingerprint recognition IC is connected to the corresponding sensing electrodes to detect the electric charge variations at the sensing electrodes.

主权项

1. A biometric recognition apparatus, comprising:
a substrate; a plurality of sensing electrodes arranged on one side of the substrate and arranged in at least one row to sense fingerprint information of user finger thereon; a plurality of traces, each of the traces electrically coupled to at least one of the sensing electrodes; at least one shielding electrode arranged on one side of the traces to shield the traces from interference of noise; at least one insulating layer arranged between the shielding electrode and the traces, and at least one fingerprint recognition integrated circuit (IC) comprising at least one self-capacitance sensing circuit, the self-capacitance sensing circuit selectively coupled to at least one of the sensing electrodes to sense charge variation or capacitance variation of the selected sensing electrode due to approaching, touching or swiping of user finger.