Patent ID: 9666635
Date: 2017-05-30
CPC Classifications: G06K,H01L

Claim:
1. A fingerprint sensing system comprising: a flexible first substrate having a top side and a bottom side, the flexible first substrate formed of an insulating material; a metal layer formed on the bottom side of the flexible first substrate, the metal layer formed to comprise a fingerprint sensing system image sensor structure; the top side of the flexible first substrate comprising a fingerprint image sensing side over which a fingerprint of a user is swiped, whereby the first flexible substrate insulates the finger of the user from the fingerprint sensing system image sensor structure; a system controller integrated circuit housed in a system controller integrated circuit package mounted on the metal layer remotely positioned from the fingerprint sensing system image sensor structure; a second substrate attached to the bottom side of the flexible first substrate having a second substrate bottom side including connector members connecting the fingerprint sensing system to a device that utilizes an output of the fingerprint sensing system controller integrated circuit; wherein the connector members comprise metal contact pads connected to the bottom side of the flexible first substrate through metal contact pads on a top side of the second substrate and intermediate connector studs, wherein the intermediate connector studs pass through the second substrate from the top side of the second substrate to the bottom side of the second substrate; wherein the second substrate comprises a cavity in which the system controller integrated circuit package is disposed, and wherein the cavity is filled with polymer filler.