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.

公开(公告)号：US20200226981A1

公开(公告)日：2020-07-16

申请号：US16830286

申请日：2020-03-26

Applicant: Novatek Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Tzong-Honge Shieh ,  Ju-Lin Huang

IPC: G09G3/3258 ,  G06F3/041 ,  G06F3/044 ,  G09G3/3275 ,  G09G3/3208

Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals, the sensing channels are coupled to the sensing lines in an arrangement selected from one of a random arrangement and a normal arrangement. The driver further includes a signal convertor coupled to the sensing channels and configured to receive the sensing signals from the sensing channels in a sequence selected from one of a random sequence and a normal sequence.

公开(公告)号：US20200184869A1

公开(公告)日：2020-06-11

申请号：US16429051

申请日：2019-06-02

Applicant: Novatek Microelectronics Corp.

Inventor： Po-Hsiang Fang ,  Jhih-Siou Cheng ,  Ju-Lin Huang

IPC: G09G3/20

Abstract: A source driver and an operating method thereof are provided. The source driver includes a high voltage circuit, a low voltage circuit and a sensing circuit. The low voltage circuit is coupled to the high voltage circuit. The high voltage circuit and low voltage circuit drive a display panel. The sensing circuit is coupled to the low voltage circuit. The sensing circuit senses the display panel during an analog-to-digital operating period. At least one of the high voltage circuit and the low voltage circuit is disabled during at least part of the analog-to-digital operating period.

公开(公告)号：US20200007085A1

公开(公告)日：2020-01-02

申请号：US16021032

申请日：2018-06-28

Applicant: NOVATEK Microelectronics Corp.

Inventor： Cheng-En Hsieh ,  Shen-Iuan Liu ,  Tzu-Chien Tzeng ,  Jin-Yi Lin ,  Kuo-Sheng Huang ,  Ju-Lin Huang

IPC: H03F1/02 ,  H03F3/00 ,  H03F3/45 ,  H03G1/00

Abstract: A dynamic amplifier includes a first output capacitor, a first switch, a current source, a second switch, a voltage detector, a third switch and a level shifter. The first switch is coupled between a first terminal of the first output capacitor and a voltage detection node. The second switch is coupled to the current source and the voltage detection node. The voltage detector is coupled to the voltage detection node and the first switch. The third switch is coupled between the voltage detection node and a power source. The level shifter is coupled to a second terminal of the first output capacitor.

公开(公告)号：US20190149100A1

公开(公告)日：2019-05-16

申请号：US16249911

申请日：2019-01-17

Applicant: Novatek Microelectronics Corp.

Inventor： Chia-Wei Su ,  Ju-Lin Huang ,  Keko-Chun Liang

IPC: H03F1/08 ,  H03F1/52 ,  H03F3/30 ,  H03F3/45

CPC classification number: H03F1/083 ,  H03F1/52 ,  H03F1/523 ,  H03F3/303 ,  H03F3/45475 ,  H03F2200/129 ,  H03F2200/153 ,  H03F2200/444 ,  H03F2203/30036 ,  H03F2203/45218 ,  H03F2203/45654 ,  H03F2203/45658 ,  H03F2203/45686 ,  H03F2203/45702

Abstract: An amplifier circuit including an input amplifier, an output amplifier and a diode device is provided. The output amplifier is coupled to the input amplifier and outputs an output voltage. The diode device is coupled between an output end and an input end of the output amplifier. When a voltage difference between the output end and the input end of the output amplifier is greater than a barrier voltage of the diode device, the diode device is turned on, and an overshoot of the output voltage is reduced.

公开(公告)号：US20170324240A1

公开(公告)日：2017-11-09

申请号：US15378067

申请日：2016-12-14

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Ju-Lin Huang ,  Chia-En Wu

IPC: H02H9/04

CPC classification number: H02H9/046 ,  H01L27/0266 ,  H01L27/0288

Abstract: An output circuit with electrostatic discharge (ESD) protection in a semiconductor chip includes a first metal oxide semiconductor (MOS) transistor and a first resistor. The first MOS transistor includes a first terminal coupled to an output pad of the semiconductor chip, a bulk terminal and a gate terminal. The first resistor is coupled between the bulk terminal of the first MOS transistor and a first power supply terminal.

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。

公开(公告)号：US09270112B2

公开(公告)日：2016-02-23

申请号：US13865210

申请日：2013-04-18

Applicant: Novatek Microelectronics Corp.

Inventor： Ju-Lin Huang ,  Che-Lun Hsu ,  Jhih-Siou Cheng ,  Chun-Yung Cho

IPC: H02H9/02 ,  H02H9/04 ,  G09G3/20

CPC classification number: H02H9/046 ,  G09G3/20 ,  G09G2310/027 ,  G09G2320/0276 ,  G09G2330/028 ,  G09G2330/04 ,  G09G2330/06 ,  H03M1/00 ,  H03M1/0827 ,  H03M1/808

Abstract: A driving circuit includes several first electrostatic current limiting resistors and several digital to analog converter (DAC) units. First ends of these first electrostatic current limiting resistors common coupled to a global path to receive a reference voltage. These DAC units respectively coupled to second ends of the first electrostatic current limiting resistors one-on-one to receive the reference voltage through the first electrostatic current limiting resistors.

Abstract translation: 驱动电路包括几个第一静电电流限制电阻器和几个数模转换器（DAC）单元。 这些第一静电电流限制电阻的第一端公共耦合到全局路径以接收参考电压。 这些DAC单元分别耦合到第一静电电流限制电阻器的第二端，以通过第一静电电流限制电阻器接收参考电压。

公开(公告)号：US20150339960A1

公开(公告)日：2015-11-26

申请号：US14645434

申请日：2015-03-12

Applicant: Novatek Microelectronics Corp.

Inventor： Ju-Lin Huang ,  Jhih-Siou Cheng ,  Chun-Yung Cho ,  Chia-En Wu

IPC: G09G3/00

CPC classification number: G09G3/20 ,  G09G2330/04 ,  G09G2330/06

Abstract: A display driving module including a driving circuit portion and a non-driving circuit portion is provided. The driving circuit portion is controlled by a system circuit block. The driving circuit portion includes driving channels for driving a display panel. First ESD protection devices are disposed in the driving circuit portion corresponding to the driving channels for providing at least one discharge path. The non-driving circuit portion electrically connects the system circuit block, the driving circuit portion and the display panel. At least one of second ESD protection devices is disposed in at least one of the driving circuit portion, the non-driving circuit portion, the system circuit block and the display panel corresponding to the first ESD protection devices. The second ESD protection devices cooperate with the first ESD protection devices to provide the discharge path. An image display system including the foregoing display driving module is also provided.

Abstract translation: 提供了包括驱动电路部分和非驱动电路部分的显示驱动模块。 驱动电路部分由系统电路块控制。 驱动电路部分包括用于驱动显示面板的驱动通道。 第一ESD保护装置设置在对应于驱动通道的驱动电路部分中，用于提供至少一个放电路径。 非驱动电路部分电连接系统电路块，驱动电路部分和显示面板。 至少一个第二ESD保护器件设置在驱动电路部分，非驱动电路部分，系统电路块和对应于第一ESD保护器件的显示面板中的至少一个中。 第二ESD保护装置与第一ESD保护装置配合以提供放电路径。 还提供了包括上述显示驱动模块的图像显示系统。

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。