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    ELECTRONIC CIRCUIT HAVING DISPLAY DRIVING FUNCTION, TOUCH SENSING FUNCTION AND FINGERPRINT SENSING FUNCTION
    33.
    发明申请
    ELECTRONIC CIRCUIT HAVING DISPLAY DRIVING FUNCTION, TOUCH SENSING FUNCTION AND FINGERPRINT SENSING FUNCTION 有权

    公开(公告)号：US20210349598A1

    公开(公告)日：2021-11-11

    申请号：US17149676

    申请日：2021-01-14

    Applicant: Novatek Microelectronics Corp.

    Inventor： Huan-Teng Cheng ,  Yuan Heng Lu

    IPC: G06F3/041

    Abstract: An electronic circuit adapted to drive a display panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a switch circuit and a control circuit. The switch circuit includes a plurality of first switch elements and a plurality of second switch elements. The control circuit is configured to generate control signals for controlling the switch circuit, so as to control the electronic circuit to transmit the display driving signals from the first circuit to the data lines through a first part of the first switch elements in a first time interval, and control the electronic circuit to receive the fingerprint sensing signals from the fingerprint sensors of the display panel through the second switch elements in a second time interval.

    Control circuit, display system, and related method of controlling display panel
    34.
    发明申请
    Control circuit, display system, and related method of controlling display panel 有权

    公开(公告)号：US20210056286A1

    公开(公告)日：2021-02-25

    申请号：US16999019

    申请日：2020-08-20

    Applicant: NOVATEK Microelectronics Corp.

    Inventor： Huan-Teng Cheng

    IPC: G06K9/00 ,  G06F1/3231 ,  G06F1/3234

    Abstract: A control circuit, coupled to a system processor and a display panel, includes a touch control circuit, a display control circuit and a fingerprint control circuit. The touch control circuit is configured to detect a finger touch on the display panel. The display control circuit is configured to control the display panel to display at least one light spot which indicates a position of the finger touch. The fingerprint control circuit is configured to perform fingerprint sensing through at least one fingerprint sensor corresponding to the position of the finger touch, and send fingerprint image data to the system processor, wherein the fingerprint image data corresponds to sensing signals received from the at least one fingerprint sensor. Wherein, each of the above steps is performed by the control circuit by keeping a display part of the system processor in a sleep status.

    ELECTRONIC CIRCUIT HAVING DISPLAY DRIVING FUNCTION, TOUCH SENSING FUNCTION AND FINGERPRINT SENSING FUNCTION
    35.
    发明申请
    ELECTRONIC CIRCUIT HAVING DISPLAY DRIVING FUNCTION, TOUCH SENSING FUNCTION AND FINGERPRINT SENSING FUNCTION 有权

    公开(公告)号：US20210056281A1

    公开(公告)日：2021-02-25

    申请号：US16921921

    申请日：2020-07-06

    Applicant: Novatek Microelectronics Corp.

    Inventor： Wei-Lun Shih ,  Tzu-Wen Hsieh ,  Huan-Teng Cheng ,  Huang-Chin Tang ,  Yueh-Teng Mai ,  Shi-Hao Huang ,  Jung-Chung Lee

    IPC: G06K9/00 ,  G09G5/10

    Abstract: An electronic circuit for driving a panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a touch sensing circuit, a fingerprint sensing circuit and a display driving circuit. The touch sensing circuit senses a touch of a finger and determines a first area corresponding to the touch on the panel. The fingerprint sensing circuit senses a fingerprint image of the finger corresponding to the first area of the panel. The display driving circuit drives pixels over the panel with respective first gray levels during a first phase, and drives pixels of the first area with respective second gray levels and pixels of a second area outside the first area with respective third gray levels during a second phase. The respective second gray levels are higher than the respective first gray levels, and the respective third gray levels are lower than the respective second gray levels.

    Timing control circuit and operation method thereof
    36.
    发明授权
    Timing control circuit and operation method thereof 有权

    公开(公告)号：US10895933B2

    公开(公告)日：2021-01-19

    申请号：US16352844

    申请日：2019-03-14

    Applicant: Novatek Microelectronics Corp.

    Inventor： Huan-Teng Cheng ,  Huang-Chin Tang

    IPC: G06F3/041 ,  G09G3/20

    Abstract: A timing control circuit and an operation method thereof are provided. The timing control circuit includes a receiving circuit, a line memory, and a timing generating circuit. The receiving circuit receives a video packet stream from the outside and provides an external horizontal sync signal and a first data signal. The line memory temporarily stores the first data signal, and outputs a second data signal to a source driver according to an internal horizontal sync signal generated by the timing generating circuit. A video frame period of the second data signal includes a video display operation period and a touch detection period. A video display operation period is divided into a plurality of sub-periods. The timing generating circuit performs a synchronization operation in each of the sub-periods, so as to synchronize the timing of the internal horizontal sync signal with the timing of the external horizontal sync signal.

    Method of controlling display panel and display driver circuit and scan control circuit thereof
    37.
    发明申请
    Method of controlling display panel and display driver circuit and scan control circuit thereof 有权

    公开(公告)号：US20250022399A1

    公开(公告)日：2025-01-16

    申请号：US18675178

    申请日：2024-05-28

    Applicant: NOVATEK Microelectronics Corp.

    Inventor： Huan-Teng Cheng

    IPC: G09G3/20

    Abstract: A method of controlling a display panel, wherein the display panel has a plurality of pixels among which a line of pixels are divided into a plurality of groups of pixels, includes steps of: generating a scan control signal for the line of pixels when scanning the line of pixels; outputting a plurality of enable signals, each for controlling one of the plurality of groups of pixels; and determining whether to output a scan signal to each of the plurality of groups of pixels according to the scan control signal and each of the plurality of enable signals when scanning the line of pixels.

    Imaging control circuit for collecting object image data for an object
    38.
    发明授权
    Imaging control circuit for collecting object image data for an object 有权

    公开(公告)号：US12148237B2

    公开(公告)日：2024-11-19

    申请号：US18321730

    申请日：2023-05-22

    Applicant: Novatek Microelectronics Corp.

    Inventor： Huan-Teng Cheng ,  Ting-Hsuan Hung ,  Wei-Lun Shih ,  Huang-Chin Tang

    IPC: G06V40/13 ,  G06F3/041 ,  G09G3/20

    Abstract: An imaging control circuit for collecting object image data for an object presented on a portion of a surface of a display panel is provided. The imaging control circuit includes a first circuit, a second circuit and a third circuit. The first circuit is adapted to receive touch sensing signals from a set of touch sensors located in the display panel. The second circuit is adapted to receive object image sensing signals from a set of imaging sensors. The object image sensing signals are associated with the object detected on the surface of the display panel. The third circuit is adapted to determine a location of the object from the touch sensing signals and generate a variable sized object imaging zone based on a location and a size of an object image. The variable sized object imaging zone includes a variable subset of the imaging sensors.

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