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    DRIVING CIRCUIT
    21.
    发明申请
    DRIVING CIRCUIT 有权
    驱动电路

    公开(公告)号：US20140139364A1

    公开(公告)日：2014-05-22

    申请号：US13925849

    申请日：2013-06-25

    Applicant: Novatek Microelectronics Corp.

    Inventor： Ju-Lin Huang ,  Jhih-Siou Cheng ,  Chun-Yung Cho ,  Chieh-An Lin

    IPC: H03M1/66

    CPC classification number: H03M1/06 ,  G09G3/20 ,  G09G2300/0421 ,  G09G2310/027 ,  G09G2310/0275 ,  G09G2320/0276 ,  H03M1/66 ,  H03M1/765

    Abstract: A driving circuit includes a plurality of reference voltage lines and a digital to analog converter. The reference voltage lines are configured for respectively transmitting different grayscale reference voltages, in which the grayscale reference voltages are divided into at least two groups, and the wire diameter/wire width of at least one reference voltage line among the reference voltage lines of a first voltage group among the at least two groups is different from the wire diameters/wire widths of the reference voltage lines of a second voltage group among the at least two groups. The digital to analog converter is coupled to the reference voltage lines to receive the grayscale reference voltages and is for converting a digital signal into a grayscale voltage according to the grayscale reference voltages.

    Abstract translation: 驱动电路包括多个参考电压线和数模转换器。 参考电压线被配置为分别传输不同的灰度参考电压，其中灰度参考电压被划分为至少两组，并且第一个参考电压的参考电压线中的至少一个参考电压线的线径/线宽 所述至少两组中的电压组与所述至少两组中的第二电压组的参考电压线的线径/线宽不同。 数模转换器耦合到参考电压线以接收灰度参考电压，并且用于根据灰度参考电压将数字信号转换成灰度级电压。

    DISPLAY DRIVER AND CHARGE RECYCLING METHOD USING THE SAME
    23.
    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.

    DIGITAL-TO-ANALOG CONVERSION DEVICE AND OPERATION METHOD THEREOF
    26.
    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.

    Differential input circuit and driving circuit
    27.
    发明授权
    Differential input circuit and driving circuit 有权

    公开(公告)号：US11244621B2

    公开(公告)日：2022-02-08

    申请号：US16820805

    申请日：2020-03-17

    Applicant: NOVATEK MICROELECTRONICS CORP.

    Inventor： Chieh-An Lin ,  Tzu-Chien Tzeng

    IPC: G09G3/3225 ,  G09G3/3258

    Abstract: A differential input circuit and a driving circuit including the same are provided. The differential input circuit transforms an analog voltage signal corresponding to a sensing line on an OLED panel to a pair of differential input signals being output to a gain amplifier. The differential input circuit includes a sampling circuit and a scaling circuit. The sampling circuit receives the analog voltage signal and a reference voltage through a first scaling path and a second scaling path, respectively. The scaling circuit includes a first scaling path and a second scaling path. The first scaling path and the second scaling path collectively generate the pair of differential input signals, based on a first shift voltage, a first scaled voltage, a second shift voltage, and a second scaled voltage. The first shift voltage is less than the second shift voltage.

    Current integrator and related signal processing system
    28.
    发明授权
    Current integrator and related signal processing system 有权

    公开(公告)号：US10804865B1

    公开(公告)日：2020-10-13

    申请号：US16729495

    申请日：2019-12-30

    Applicant: NOVATEK Microelectronics Corp.

    Inventor： Chieh-An Lin ,  Yen-Ru Kuo ,  Jhih-Siou Cheng ,  Ju-Lin Huang

    IPC: H03M1/12 ,  H03F3/45

    Abstract: A current integrator includes an operational amplifier, an integration capacitor and an offset cancelation capacitor. The operational amplifier includes a first input stage and a second input stage. The first input stage is coupled to an input terminal of the current integrator. The integration capacitor is coupled between the first input stage of the operational amplifier and an output terminal of the current integrator. The offset cancelation capacitor is coupled to the second input stage of the operational amplifier.

    Display apparatus and driving method thereof
    29.
    发明授权
    Display apparatus and driving method thereof 有权

    公开(公告)号：US10163416B2

    公开(公告)日：2018-12-25

    申请号：US14801855

    申请日：2015-07-17

    Applicant: Novatek Microelectronics Corp.

    Inventor： Chieh-An Lin ,  Jhih-Siou Cheng ,  Po-Hsiang Fang ,  Po-Yu Tseng ,  Ju-Lin Huang ,  Yi-Chuan Liu

    IPC: G09G3/36

    Abstract: A display apparatus and a driving method of the same are provided. The display apparatus includes a display panel, a gate driver circuit, and a source driver circuit. During a functional sub-period of a frame period, the gate driver circuit simultaneously drives a plurality of gate lines, and the source driver circuit drives a plurality of source lines, so as to perform a function on a plurality of pixels connected to the gate lines. In a scan sub-period of the frame period, the gate driver circuit drives the gate lines according to a scan sequence, and the source driver circuit correspondingly drives the source lines according to the scan sequence of the gate driver circuit in the first scan sub-period, so as to display an image.

    OPERATIONAL AMPLIFIER CIRCUIT AND METHOD FOR ENHANCING DRIVING CAPACITY THEREOF
    30.
    发明申请
    OPERATIONAL AMPLIFIER CIRCUIT AND METHOD FOR ENHANCING DRIVING CAPACITY THEREOF 有权
    操作放大器电路和用于增强其驱动能力的方法

    公开(公告)号：US20140218111A1

    公开(公告)日：2014-08-07

    申请号：US14016136

    申请日：2013-09-02

    Applicant: Novatek Microelectronics Corp.

    Inventor： Chieh-An Lin ,  Chun-Yung Cho ,  Ju-Lin Huang

    IPC: H03F3/45

    CPC classification number: H03F3/45076 ,  H03F3/3022 ,  H03F3/45192 ,  H03F2200/234 ,  H03F2203/45116

    Abstract: An operational amplifier circuit configured to drive a load is provided. The operational amplifier circuit includes an output stage module. The output stage module includes a detection circuit and an output stage circuit. The detection circuit is configured to detect a current output voltage and a previous output voltage based on a comparison result of a current input voltage and the current output voltage. The detection circuit enhances a charge capacity or a discharge capacity of the output stage circuit for the load based on a detection result. Furthermore, a method for enhancing the driving capacity of the operational amplifier circuit is also provided.

    Abstract translation: 提供了构造成驱动负载的运算放大器电路。 运算放大器电路包括输出级模块。 输出级模块包括检测电路和输出级电路。 检测电路被配置为基于当前输入电压和电流输出电压的比较结果来检测电流输出电压和先前的输出电压。 检测电路基于检测结果增强负载的输出级电路的充电容量或放电容量。 此外，还提供了一种用于增强运算放大器电路的驱动能力的方法。

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