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    METHOD AND APPARATUS
    1.
    发明申请
    METHOD AND APPARATUS 有权

    公开(公告)号：US20250068877A1

    公开(公告)日：2025-02-27

    申请号：US18943156

    申请日：2024-11-11

    Applicant: TOUCH BIOMETRIX LIMITED

    Inventor： Michael COWIN ,  Henricus DERCKX ,  Wilhelmus VAN LIER ,  Toru SAKAI

    IPC: G06K19/07 ,  G06K19/073 ,  G06K19/077

    Abstract: A method of manufacturing a smartcard inlay is provided. The method includes providing a dielectric sheet; depositing, on a first major surface of the dielectric sheet, an active matrix TFT array comprising at least one conductive layer; wherein the at least one conductive layer is deposited on regions of the dielectric sheet outside of the active matrix TFT array to provide electrical connections of the inlay.

    BIOMETRIC SKIN CONTACT SENSOR AND METHOD OF OPERATING A BIOMETRIC SKIN CONTACT SENSOR
    2.
    发明公开
    BIOMETRIC SKIN CONTACT SENSOR AND METHOD OF OPERATING A BIOMETRIC SKIN CONTACT SENSOR 审中-公开

    公开(公告)号：US20240021007A1

    公开(公告)日：2024-01-18

    申请号：US18023543

    申请日：2021-08-27

    Applicant: TOUCH BIOMETRIX LIMITED

    Inventor： Henricus DERCKX ,  Wilhelmus VAN LIER ,  Toru SAKAI

    IPC: G06V40/13

    CPC classification number: G06V40/1306

    Abstract: A biometric skin contact sensor comprising an array of sensor pixels, wherein each sensor pixel comprises: a capacitive sensing electrode for accumulating a charge in response to proximity of a conductive object to be sensed; a reference capacitor connected to the capacitive sensing electrode; a sense voltage-controlled impedance, VCI, having a control terminal connected to a connection between the capacitive sensing electrode and the reference capacitor, the sense VCI having an impedance controlled by its control terminal voltage, and wherein the pixel is arranged so that, in response to a select voltage being applied to the pixel, the control terminal voltage of the sense VCI indicates the proximity of the conductive object to be sensed; and biasing circuitry comprising a one-way conduction path from a bias voltage connection to the control terminal of the sense VCI so that current flows from the bias voltage towards the control terminal of the sense VCI in response to the control terminal voltage of the sense VCI dropping below a floor value.

    APPARATUS AND METHOD
    4.
    发明申请
    APPARATUS AND METHOD 有权

    公开(公告)号：US20250022306A1

    公开(公告)日：2025-01-16

    申请号：US18708799

    申请日：2022-11-14

    Applicant: TOUCH BIOMETRIX LIMITED

    Inventor： Henricus DERCKX ,  Michael COWIN ,  Wilhelmus VAN LIER ,  Toru SAKAI

    IPC: G06V40/13

    Abstract: An aspect of the disclosure provides a cover glass configured to overlie a display screen of a user equipment, UE, device, the cover glass comprising: a substrate arranged to overlie a said display screen for protecting said display screen, wherein the substrate has a display-facing surface and a user-facing surface; and a capacitive biometric skin contact sensor coupled to the substrate and configured to resolve the contours of skin proximal to the sensor, the sensor comprising: a plurality of gate drive channels; a plurality of read-out channels; a sensor array of sensor pixels, wherein each sensor pixel comprises a thin film transistor and an at least partially transparent capacitive sensing electrode coupled to the thin film transistor, and wherein each of the sensor pixels is coupled to both: (i) a gate drive channel to receive a scanning signal; and (ii) a read-out channel to provide a read-out signal; and conversion circuitry configured to process read-out signals received from sensor pixels to obtain biometric skin contact data therefrom; wherein the cover glass is arranged to couple to said UE device to enable transmission of biometric skin contact data from the conversion circuitry to a processor of said UE device.

    BIOMETRIC SKIN CONTACT SENSOR AND METHODS OF OPERATING A BIOMETRIC SKIN CONTACT SENSOR
    6.
    发明公开
    BIOMETRIC SKIN CONTACT SENSOR AND METHODS OF OPERATING A BIOMETRIC SKIN CONTACT SENSOR 审中-公开

    公开(公告)号：US20230377365A1

    公开(公告)日：2023-11-23

    申请号：US18024856

    申请日：2021-09-07

    Applicant: TOUCH BIOMETRIX LIMITED

    Inventor： Henricus DERCKX ,  Michael COWIN ,  Wilhelmus VAN LIER ,  Toru SAKAI

    IPC: G06V40/13 ,  H03K17/96

    CPC classification number: G06V40/1306 ,  H03K17/9622

    Abstract: A capacitive biometric skin contact sensor configured to resolve the contours of skin in contact with the sensor, wherein the sensor comprises: an array of sensor pixels, wherein each sensor pixel comprises a thin film transistor and a capacitive sensing electrode connected to the thin film transistor; a plurality of gate drive channels, wherein each gate drive channel is arranged to provide a gate drive signal to one or more of the sensor pixels; a plurality of read-out channels, wherein each read-out channel is arranged to receive a read-out current from one or more of the sensor pixels, each read-out current being indicative of a proximity to a respective capacitive sensing electrode of a conductive object to be sensed; a current multiplexer connected to a plurality of the read-out channels to receive read-out currents therefrom; and a current mirror assembly connected to the multiplexer to receive an input current therefrom and to provide a selected gain to the input current; wherein the sensor is configured to control both: (i) the number of read-out currents selected by the multiplexer, and (ii) the selected gain to the input current.

    BIOMETRIC SKIN CONTACT SENSOR AND METHODS OF OPERATING A BIOMETRIC SKIN CONTACT SENSOR
    7.
    发明公开
    BIOMETRIC SKIN CONTACT SENSOR AND METHODS OF OPERATING A BIOMETRIC SKIN CONTACT SENSOR 审中-公开

    公开(公告)号：US20230326230A1

    公开(公告)日：2023-10-12

    申请号：US18024861

    申请日：2021-09-07

    Applicant: TOUCH BIOMETRIX LIMITED

    Inventor： Henricus DERCKX ,  Michael COWIN ,  Wilhelmus VAN LIER ,  Toru SAKAI

    IPC: G06V40/13

    CPC classification number: G06V40/1306

    Abstract: A capacitive biometric skin contact sensor configured to resolve the contours of skin in contact with the sensor, wherein the sensor comprises: an array of sensor pixels, wherein each sensor pixel comprises a thin film transistor and a capacitive sensing electrode connected to the thin film transistor; a plurality of gate drive channels, wherein each gate drive channel is arranged to provide a gate drive signal to one or more of the sensor pixels; a plurality of read-out channels, wherein each read-out channel is arranged to receive a read-out current from one or more of the sensor pixels, each read-out current being indicative of a proximity to a respective capacitive sensing electrode of a conductive object to be sensed; and an analog to digital converter comprising a dual slope integrator arranged to receive, as its input, either an output current or a reference voltage, wherein said output current is based on one or more read-out currents; wherein the biometric sensor is configured to: apply the output current as the input to the dual slope integrator for a charging time period to charge a capacitor of the dual slope integrator; apply the reference voltage as the input to the dual slope integrator for a discharging time period, wherein the discharging time period comprises the amount of time it takes for the capacitor to discharge; and determine the proximity to the one or more respective capacitive sensing electrodes of the conductive body based on an indication of the discharging time period.

    APPARATUS AND METHOD
    9.
    发明申请
    APPARATUS AND METHOD 有权

    公开(公告)号：US20220238566A1

    公开(公告)日：2022-07-28

    申请号：US17616486

    申请日：2020-06-05

    Applicant: TOUCH BIOMETRIX LIMITED

    Inventor： Henricus DERCKX ,  Wilhelmus VAN LIER ,  Michael A. COWIN

    IPC: H01L27/12 ,  G06F3/044

    Abstract: Disclosed herein is a pixel structure comprising a plurality of layers for providing a touch sensitive pixel of a sensing array. The pixel comprises: a thin film transistor, a capacitive sensing electrode, and a reference capacitor comprising a first plate and a second plate. The capacitive sensing electrode and the second plate of the reference capacitor are connected to a gate region of the thin film transistor. Methods of manufacturing such a touch sensitive pixel are also disclosed herein.

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