Abstract: Particular embodiments of the present invention are directed to a flexible fingerprint sensor interconnect apparatus that includes a fingerprint sensor chip having at least one die contact and a multilayer flexible substrate. Furthermore, the apparatus includes at least one conductive trace in the multilayer flexible substrate, and the at least one conductive trace has an exposed contact region that is directly electrically coupled to the at least one contact pad.

Abstract: The present invention is directed to a method of making flexible interconnect packaging, in particular, packaging for fingerprint sensor chips. The chip is mounted on a flexible substrate having conductive traces leading to a connector at an end of the substrate. Wires are used to connect contact pads with the conductive traces, and a rigid frame is mounted below the substrate and chip. The conductive traces are preferably internal within the substrate and are exposed by forming a cavity in the substrate adjacent to the chip. Also disclosed are electronic devices which incorporate the foregoing fingerprint sensing apparatus.

Abstract: A device and method for matching fingerprints and granting or denying access is disclosed. Fingerprints of each potential user are captured by a fingerprint sensor, processed and saved in the device memory. Each fingerprint is converted to a digital image, all fingerprint ridges are thinned and all features except bifurcation points are deleted. The system generates templates of bifurcation points for each person to be enrolled, the template including the coordinates for each bifurcation point and stores the templates in a memory. When a user activates the system by placing his finger on the fingerprint sensor, the system captures the image, digitizes it and determines the coordinates of the bifurcation points. If the match meets the required criteria the user is allowed access. The processing time takes 300 msec or less.

Abstract: System for providing an open-cavity semiconductor package. The system includes a method for wire bonding a finger sensor die to an external circuit. The finger sensor die includes a sensor array having one or more die contacts that are wire bonded to one or more external contacts of the external circuit so that a usable portion of the sensor array is maximized. The method comprises steps of forming a ball at a first end of a bonding wire, forming an electrically conductive connection between the ball and a selected external contact of the external circuit, extending the bonding wire to a selected die contact so as to form a wire loop having a low loop height, and forming an electrically conductive stitch connection between a second end of the bonding wire and the selected die contact.

Abstract: The present invention is directed to a method of making flexible interconnect packaging, in particular, packaging for fingerprint sensor chips. The chip is mounted on a flexible substrate having conductive traces leading to a connector at an end of the substrate. Wires are used to connect contact pads with the conductive traces, and a rigid frame is mounted below the substrate and chip. The conductive traces are preferably internal within the substrate and are exposed by forming a cavity in the substrate adjacent to the chip. Also disclosed are electronic devices which incorporate the foregoing fingerprint sensing apparatus.

Abstract: Flexible interconnect packaging system. The system includes a flexible substrate material that includes internal traces coupled to fingerprint sensor mounted to the substrate. Bonding pads of the fingerprint sensor are connected to conductive trace pads of the internal traces using techniques such as, wire bonding, ball/bump methods, tape automated bonding (TAB), or any other applicable bonding methodology for integrated circuits. The final package includes a pre-molded package the forms an open cavity, thereby allowing a sensor surface of the fingerprint sensor to be exposed for access by a user.

Abstract: System for providing an open-cavity semiconductor package. The system includes a method for wire bonding a finger sensor die to an external circuit. The finger sensor die includes a sensor array having one or more die contacts that are wire bonded to one or more external contacts of the external circuit so that a usable portion of the sensor array is maximized. The method comprises steps of forming a ball at a first end of a bonding wire, forming an electrically conductive connection between the ball and a selected external contact of the external circuit, extending the bonding wire to a selected die contact so as to form a wire loop having a low loop height, and forming an electrically conductive stitch connection between a second end of the bonding wire and the selected die contact.

Abstract: Flexible interconnect packaging system. The system includes a flexible substrate material that includes internal traces coupled to fingerprint sensor mounted to the substrate. Bonding pads of the fingerprint sensor are connected to conductive trace pads of the internal traces using techniques such as, wire bonding, ball/bump methods, tape automated bonding (TAB), or any other applicable bonding methodology for integrated circuits. The final package includes a pre-molded package the forms an open cavity, thereby allowing a sensor surface of the fingerprint sensor to be exposed for access by a user.

Abstract: System for providing an open-cavity semiconductor package. The system includes a method for wire bonding a finger sensor die to an external circuit. The finger sensor die includes a sensor array having one or more die contacts that are wire bonded to one or more external contacts of the external circuit so that a usable portion of the sensor array is maximized. The method comprises steps of forming a ball at a first end of a bonding wire, forming an electrically conductive connection between the ball and a selected external contact of the external circuit, extending the bonding wire to a selected die contact so as to form a wire loop having a low loop height, and forming an electrically conductive stitch connection between a second end of the bonding wire and the selected die contact.

Abstract: System for providing an open-cavity semiconductor package. The system includes a method for wire bonding a finger sensor die to an external circuit. The finger sensor die includes a sensor array having one or more die contacts that are wire bonded to one or more external contacts of the external circuit so that a usable portion of the sensor array is maximized. The method comprises steps of forming a ball at a first end of a bonding wire, forming an electrically conductive connection between the ball and a selected external contact of the external circuit, extending the bonding wire to a selected die contact so as to form a wire loop having a low loop height, and forming an electrically conductive stitch connection between a second end of the bonding wire and the selected die contact.