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公开(公告)号：US09626925B2
公开(公告)日：2017-04-18
申请号：US14669003
申请日：2015-03-26
Applicant: Novatek Microelectronics Corp.
Inventor： Jhih-Siou Cheng , Po-Hsiang Fang , Chieh-An Lin , Po-Yu Tseng , Ju-Lin Huang , Yi-Chuan Liu
IPC: G09G3/36
CPC classification number: G09G3/3648 , G09G3/3677 , G09G3/3688 , G09G2300/0413 , G09G2310/08 , G09G2320/0223
Abstract: A source driver apparatus and an operating method thereof are provided. The source driver apparatus can drive a plurality of source lines of a display panel, wherein the display panel further comprising a gate driver apparatus. The source driver apparatus includes driving channels and a delay control circuit. The driving channels output source driving signals. The delay control circuit controls the driving channels to change delay times of the source driving signals within the same period, such that the delay times of the source driving signals respectively correspond to distances from the source lines to the gate driver apparatus.
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公开(公告)号：US09467108B2
公开(公告)日：2016-10-11
申请号：US14741469
申请日：2015-06-17
Applicant: Novatek Microelectronics Corp.
Inventor： Chieh-An Lin , Chun-Yung Cho , Ju-Lin Huang
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.
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13.发明授权Operational amplifier circuit and method for enhancing driving capacity thereof 有权运算放大器电路及其驱动能力的提高方法公开(公告)号：US09106189B2
公开(公告)日：2015-08-11
申请号：US14016136
申请日：2013-09-02
Applicant: Novatek Microelectronics Corp.
Inventor： Chieh-An Lin , Chun-Yung Cho , Ju-Lin Huang
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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公开(公告)号：US08797201B2
公开(公告)日：2014-08-05
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。
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公开(公告)号：US12081232B2
公开(公告)日：2024-09-03
申请号：US17827822
申请日：2022-05-30
Applicant: Novatek Microelectronics Corp.
Inventor： Jhih-Siou Cheng , Chih-Hsien Chou , Chieh-An Lin
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.
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Patent Agency Ranking
公开(公告)号：US11067608B2
公开(公告)日：2021-07-20
申请号：US16441027
申请日：2019-06-14
Applicant: Novatek Microelectronics Corp.
Inventor： Chih-Wen Lu , Chih-Hao Lin , Jhih-Siou Cheng , Chieh-An Lin
Abstract: A current sensor including a voltage generation circuit and a voltage integration circuit is provided. The voltage generation circuit is configured to generate a first voltage according to a current to be sensed. The voltage integration circuit is coupled to the voltage generation circuit and configured to receive the first voltage and a second voltage to generate an output voltage. The voltage integration circuit includes a first amplifier, a second amplifier and a first capacitor. The first amplifier is configured to receive the first voltage and the second voltage to generate a third voltage. The second amplifier is coupled to the first amplifier and configured to receive the third voltage to generate the output voltage. The first capacitor is coupled between an output terminal of the voltage generation circuit and an output terminal of the first amplifier and configured to reduce a voltage difference between the first voltage and the second voltage.
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17.发明申请公开(公告)号：US20200234636A1
公开(公告)日：2020-07-23
申请号：US16253171
申请日：2019-01-21
Applicant: NOVATEK Microelectronics Corp.
Inventor： Jin-Yi Lin , Chieh-An Lin , Jhih-Siou Cheng , Ju-Lin Huang
IPC: G09G3/3225 , G11C27/02 , H03F3/45 , H03K3/356
Abstract: A sensing circuit for an organic light-emitting diode driver includes a sample and hold circuit and a gain amplifier. The sample and hold circuit is configured to sample a sensing signal received via an input terminal. The gain amplifier is coupled to the sample and hold circuit. The sample and hold circuit includes a first capacitor, a second capacitor, a first switch, a second switch, a third switch and a fourth switch. The first capacitor is coupled between the input terminal and the gain amplifier. The second capacitor is coupled between a reference terminal and the gain amplifier. The first switch is connected between the first capacitor and the input terminal. The second switch is connected between the second capacitor and the reference terminal. The third switch is connected between the first capacitor and the gain amplifier. The fourth switch is connected between the second capacitor and the gain amplifier.
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18.发明授权公开(公告)号：US09786234B2
公开(公告)日：2017-10-10
申请号：US14494572
申请日：2014-09-23
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chieh-An Lin , Pang-Chen Hung
CPC classification number: G09G3/3614 , G09G3/3688 , G09G2310/0291
Abstract: A driving module for a driving device of a display system includes a control unit, for generating a control signal according to a polarity signal indicating whether the driving device performs a polarity inversion; a first driving unit, coupled to the control unit, a first voltage source and a second voltage source, for generating a positive output voltage at a first output end according to a first display voltage and charging the first output end via the second voltage source according to the control signal; and a second driving unit, coupled to the control unit, the second voltage source and a third voltage source, for generating a negative output voltage at a second output end according to a second display voltage and discharging the second output end via the second voltage source according to the control signal.
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公开(公告)号：US20160284297A1
公开(公告)日：2016-09-29
申请号：US14669003
申请日：2015-03-26
Applicant: Novatek Microelectronics Corp.
Inventor： Jhih-Siou Cheng , Po-Hsiang Fang , Chieh-An Lin , Po-Yu Tseng , Ju-Lin Huang , Yi-Chuan Liu
IPC: G09G3/36
CPC classification number: G09G3/3648 , G09G3/3677 , G09G3/3688 , G09G2300/0413 , G09G2310/08 , G09G2320/0223
Abstract: A source driver apparatus and an operating method thereof are provided. The source driver apparatus can drive a plurality of source lines of a display panel, wherein the display panel further comprising a gate driver apparatus. The source driver apparatus includes driving channels and a delay control circuit. The driving channels output source driving signals. The delay control circuit controls the driving channels to change delay times of the source driving signals within the same period, such that the delay times of the source driving signals respectively correspond to distances from the source lines to the gate driver apparatus.
Abstract translation: 提供源驱动器装置及其操作方法。 源极驱动器装置可以驱动显示面板的多个源极线，其中显示面板还包括栅极驱动器装置。 源极驱动器装置包括驱动通道和延迟控制电路。 驱动通道输出源驱动信号。 延迟控制电路控制驱动信道以改变在相同周期内的源极驱动信号的延迟时间，使得源极驱动信号的延迟时间分别对应于从源极线到栅极驱动器装置的距离。
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20.发明申请OPERATIONAL AMPLIFIER CIRCUIT AND METHOD FOR ENHANCING DRIVING CAPACITY THEREOF 审中-公开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：US20150280664A1
公开(公告)日：2015-10-01
申请号：US14741469
申请日：2015-06-17
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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