Patent ID: 7393711

Claim:
A method of manufacturing a fingerprint sensor, the sensor designed to allow fingerprint detection by a finger sliding over an active surface, the method comprising the following steps: fabricating a sensor chip, the chip being in the form of an elongate strip having two short sides; mounting the chip on a substrate; connecting the chip to the substrate by wire-bonding wires placed on one short side of the chip; placing the chip/substrate assembly in a mold; and pouring a protective resin into the mold so as to at least partly cover the substrate and the chip and to completely encapsulate the wires, the mold having a shape such that a bump of resin, projecting by at least 500 microns above a sensitive surface of the chip, is formed on at least one side of the chip, the bump protecting the wire-bonding wires and forming a positioning guide for the finger, the fingerprint of which is desired to be detected, so that the latter moves opposite a sensitive active surface of the chip when the finger slides against the bump.