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    DISPLAY DRIVER AND CHARGE RECYCLING METHOD USING THE SAME
    2.
    发明公开
    DISPLAY DRIVER AND CHARGE RECYCLING METHOD USING THE SAME 审中-公开

    公开(公告)号：US20240282231A1

    公开(公告)日：2024-08-22

    申请号：US18172291

    申请日：2023-02-21

    Applicant: Novatek Microelectronics Corp.

    Inventor： Chieh-An Lin ,  Keko-Chun Liang ,  Jhih-Siou Cheng

    IPC: G09G3/20 ,  H02J7/34

    CPC classification number: G09G3/20 ,  H02J7/345 ,  G09G2310/0202 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2330/021

    Abstract: A display driver and a charge recycling method are provided. The display driver includes a charging and discharging circuit and a control circuit. A first terminal of the charging and discharging circuit is coupled to at least one of the scan lines, and a second terminal of the charging and discharging circuit is coupled to at least one of the data lines. The control circuit is coupled to a first control terminal and a second control terminal of the charging and discharging circuit. The charging and discharging circuit receives a first current generated by discharging the at least one of the scan lines to charge the capacitor based on a first control signal. The charging and discharging circuit discharges the capacitor to generate a second current for charging the at least one of the data lines based on a second control signal.

    LIGHT-EMITTING DIODE PANEL AND DRIVING DEVICE THEREOF
    5.
    发明公开
    LIGHT-EMITTING DIODE PANEL AND DRIVING DEVICE THEREOF 审中-公开

    公开(公告)号：US20240046856A1

    公开(公告)日：2024-02-08

    申请号：US18365247

    申请日：2023-08-04

    Applicant: Novatek Microelectronics Corp.

    Inventor： Yu-Sheng Ma ,  Jhih-Siou Cheng ,  Chun-Fu Lin ,  Jin-Yi Lin

    IPC: G09G3/32

    CPC classification number: G09G3/32 ,  G09G2310/0275 ,  G09G2310/0267 ,  G09G2310/0251 ,  G09G2330/04

    Abstract: A light-emitting diode (LED) panel and a driving device therefore is provided. The driving device includes a source driver and a scan driver. The source driver is coupled to a plurality of data lines disposed in the LED panel. The source driver outputs driving currents to the data lines in any one of a plurality of scan line periods, to drive an LED array of the LED panel. The scan driver is coupled to a plurality of scan lines disposed in the LED panel, wherein the scan driver scans the scan lines during the plurality of scan line periods. In an active period of any one of the scan line periods, the scan driver applies an enable voltage to a current scan line among the scan lines, and the scan driver applies a pre-charge voltage to other scan line among the scan lines.

    DIGITAL-TO-ANALOG CONVERSION DEVICE AND OPERATION METHOD THEREOF
    6.
    发明公开
    DIGITAL-TO-ANALOG CONVERSION DEVICE AND OPERATION METHOD THEREOF 审中-公开

    公开(公告)号：US20230387937A1

    公开(公告)日：2023-11-30

    申请号：US17827822

    申请日：2022-05-30

    Applicant: Novatek Microelectronics Corp.

    Inventor： Jhih-Siou Cheng ,  Chih-Hsien Chou ,  Chieh-An Lin

    IPC: H03M1/66 ,  G09G3/20

    CPC classification number: H03M1/661 ,  G09G3/2007 ,  G09G2310/027 ,  G09G2310/0289

    Abstract: The disclosure provides a digital-to-analog conversion device and an operation method thereof. The digital-to-analog conversion device includes a digital-to-analog conversion circuit and a slew rate enhancement circuit. The digital-to-analog conversion circuit is configured to convert a digital code into an analog voltage. An output terminal of the digital-to-analog conversion circuit outputs the analog voltage to a load circuit. A control terminal of the slew rate enhancement circuit is coupled to the digital-to-analog conversion circuit to receive a control voltage following the analog voltage. The slew rate enhancement circuit is coupled to the output terminal of the digital-to-analog conversion circuit. The slew rate enhancement circuit enhances the slew rate at the output terminal of the digital-to-analog conversion circuit based on the control voltage.

    Source driver with adaptive gamma driving structure
    7.
    发明公开
    Source driver with adaptive gamma driving structure 审中-公开

    公开(公告)号：US20230386415A1

    公开(公告)日：2023-11-30

    申请号：US18203651

    申请日：2023-05-31

    Applicant: NOVATEK Microelectronics Corp.

    Inventor： Jhih-Siou Cheng

    IPC: G09G3/3291

    CPC classification number: G09G3/3291 ,  G09G2310/027 ,  G09G2320/0673 ,  G09G2300/0452 ,  G09G2320/0626 ,  G09G2330/028 ,  G09G3/2074

    Abstract: A source driver includes a first DAC for driving a first-color subpixel and a second DAC for driving a second-color subpixel. Each DAC is configured to output at least one output voltage according to an N-bit data code, and includes a plurality of sub-DACs, an interpolation circuit and a switch circuit. Each sub-DAC receives m bits of the N-bit data code and generates a set of intermediate voltages accordingly. The interpolation circuit performs an interpolation on a selected set of intermediate voltages according to k bits of the N-bit data code and at least one interpolation control signal, to generate the output voltage. The switch circuit electrically connects the interpolation circuit and a selected sub-DAC which outputs the selected set of intermediate voltages. The interpolation circuit of the first DAC and the interpolation circuit of the second DAC respectively perform the interpolation according to different numbers of interpolation bits.

    DISPLAY DEVICE AND DRIVER THEREOF
    9.
    发明公开
    DISPLAY DEVICE AND DRIVER THEREOF 审中-公开

    公开(公告)号：US20230306900A1

    公开(公告)日：2023-09-28

    申请号：US18205199

    申请日：2023-06-02

    Applicant: NOVATEK MICROELECTRONICS CORP.

    Inventor： Yu-Sheng Ma ,  Jhih-Siou Cheng ,  Chun-Fu Lin ,  Jin-Yi Lin ,  Ju-Lin Huang

    IPC: G09G3/32

    CPC classification number: G09G3/32 ,  G09G2320/064 ,  G09G2330/021

    Abstract: The present disclosure relates to a driver for driving a light emitting unit array of a display device, the driver including: a plurality of driving units, each of the plurality of driving units includes: a driving circuit configured to provide a driving current to a corresponding column of light emitting units in the light emitting unit array according to a pulse width modulation signal, during a turn-on period of a channel switch; a charge path circuit configured to be connected in parallel with the driving circuit, and to be turned on during the turn-on period of the channel switch to form a charge path; and a discharge path circuit configured to be connected in parallel with the driving circuit, and to be turned-on after the channel switch is turned off, to form a discharge path.

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