公开(公告)号：US11004373B2

公开(公告)日：2021-05-11

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：US20190051232A1

公开(公告)日：2019-02-14

申请号：US15917852

申请日：2018-03-12

Applicant: Novatek Microelectronics Corp.

Inventor： Po-Hsiang Fang ,  Tzong-Honge Shieh

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2330/12 ,  G09G2350/00 ,  G09G2370/045

Abstract: A driving apparatus capable of driving a display panel and an operation method thereof are provided. The driving apparatus includes an output circuit, a receiver circuit and a multiplexer. The output circuit is configured to output a driving voltage for driving a data line of the display panel. The receiver circuit is configured to receive display data for driving the display panel to present an image. A first input terminal of the multiplexer is configured to receive information data, wherein the information data is not configured to drive the display panel to present an image. A second input terminal of the multiplexer is coupled to an output terminal of the receiver circuit. An output terminal of the multiplexer is coupled to an input terminal of the output circuit.

公开(公告)号：US20160335970A1

公开(公告)日：2016-11-17

申请号：US14708303

申请日：2015-05-11

Applicant: Novatek Microelectronics Corp.

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

IPC: G09G3/36

CPC classification number: G09G3/3674 ,  G09G3/3648 ,  G09G2310/0213 ,  G09G2310/067 ,  G09G2320/041 ,  G09G2330/025

Abstract: A display apparatus and a gate driving method thereof are provided. The display apparatus includes a display panel and a gate driver. The display panel has a plurality of gate lines. Output terminals of the gate driver are coupled to the gate lines in a one-to-one manner. The gate driver is configured to drive the gate lines according to a scrambled scan sequence.

Abstract translation: 提供了一种显示装置及其驱动方法。 显示装置包括显示面板和门驱动器。 显示面板具有多条栅极线。 栅极驱动器的输出端子以一对一的方式耦合到栅极线。 栅极驱动器被配置为根据加扰的扫描序列驱动栅极线。

公开(公告)号：US20160307529A1

公开(公告)日：2016-10-20

申请号：US14687931

申请日：2015-04-16

Applicant: Novatek Microelectronics Corp.

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

IPC: G09G3/36 ,  G09G3/32

CPC classification number: G09G3/3648 ,  G09G3/3258 ,  G09G3/3677 ,  G09G2300/04 ,  G09G2310/0291 ,  G09G2310/067 ,  G09G2310/08 ,  G09G2320/0223 ,  G09G2320/0252 ,  G09G2330/02

Abstract: A gate driver, a display apparatus having the same, and a gate driving method are provided. The display apparatus includes a plurality of pixels, a data driver circuit, and a gate driver circuit. The gate driver circuit includes M groups of gate channels. Each of the M groups of gate channels includes a control circuit and an output buffer. The control circuit receives a power supply voltage from a power supply circuit and generates a modulated supply voltage. The output buffer is connected to the control circuit, the output buffer is powered by the modulated supply voltage to output a gate signal to a gate line of the display panel, wherein a driving pulse of the gate signal is shaped during a charge period according to the modulated supply voltage, and the shape of the driving pulse of the gate signal is maintained during a pre-charge period.

Abstract translation: 提供了栅极驱动器，具有该栅极驱动器的显示装置和栅极驱动方法。 显示装置包括多个像素，数据驱动电路和栅极驱动电路。 栅极驱动器电路包括M组栅极通道。 M组栅极通道中的每一个包括控制电路和输出缓冲器。 控制电路从电源电路接收电源电压并产生调制电源电压。 输出缓冲器连接到控制电路，输出缓冲器由调制电源电压供电，以将栅极信号输出到显示面板的栅极线，其中栅极信号的驱动脉冲在充电期间根据 调制电源电压和门信号的驱动脉冲的形状在预充电期间保持。

公开(公告)号：US09230495B2

公开(公告)日：2016-01-05

申请号：US14048013

申请日：2013-10-07

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chia-Wei Su ,  Po-Yu Tseng ,  Shun-Hsun Yang ,  Po-Hsiang Fang

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G2310/0248 ,  G09G2330/023

Abstract: A self-detection charge sharing module for a liquid crystal display device is disclosed. The self-detection charge sharing module includes at least one detecting unit, for detecting a plurality of input voltages of a plurality of operational amplifiers driving a plurality of data line sand a plurality of output voltage of the plurality of data line, to generate at least one detecting result, and at least one charge sharing unit, for conducting connection between at least one first data line and at least one second data line among the plurality of data line when the at least one detecting result indicates at least one corresponding first input voltage and at least one corresponding second input voltage among the plurality of input voltage have opposite voltage variation direction and vary toward each other. The at least one first input voltage and the at least one second input voltage maintain respective polarities.

Abstract translation: 公开了一种用于液晶显示装置的自检电荷共享模块。 自检电荷共享模块包括至少一个检测单元，用于检测多个运算放大器的多个输入电压，该多个运算放大器驱动多条数据线砂多个数据线的多个输出电压，至少产生 一个检测结果和至少一个电荷共享单元，用于当所述至少一个检测结果指示至少一个对应的第一输入电压时，在所述多个数据线中的至少一个第一数据线和至少一个第二数据线之间进行连接 并且所述多个输入电压中的至少一个对应的第二输入电压具有相反的电压变化方向并且彼此变化。 所述至少一个第一输入电压和所述至少一个第二输入电压维持相应的极性。

公开(公告)号：US20250106961A1

公开(公告)日：2025-03-27

申请号：US18371453

申请日：2023-09-22

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Keko-Chun Liang ,  Chun-Fu Lin ,  Jin-Yi Lin ,  Chieh-An Lin ,  Po-Hsiang Fang

IPC: H05B45/14 ,  H05B45/325

Abstract: According to an embodiment of the invention, a backlight driver of driving a light-emitting diode (LED) string via a driving transistor in a load path is provided. The LED string, the driving transistor, and an electrical load are coupled to form the load path. The backlight driver includes a current regulator and a headroom detection circuit. The current regulator is coupled to the driving transistor and the first terminal of the electrical load to control a driving current flowing through the load path according to at least a feedback voltage from a first terminal of the electrical load. The headroom detection circuit is coupled to the first terminal of the electrical load and a voltage regulator to control the voltage regulator to regulate a supply voltage to a first terminal of the LED string according to at least the feedback voltage.

公开(公告)号：US12142245B2

公开(公告)日：2024-11-12

申请号：US17945082

申请日：2022-09-14

Applicant: NOVATEK Microelectronics Corp.

Inventor： Che-Wei Yeh ,  Keko-Chun Liang ,  Yu-Hsiang Wang ,  Yong-Ren Fang ,  Yi-Chuan Liu ,  Yi-Yang Tsai ,  Po-Hsiang Fang

IPC: G11C19/28 ,  G09G3/20 ,  G09G5/12

Abstract: A control system includes a plurality of driving circuits coupled in series, which include a first driving circuit and a second driving circuit. The first driving circuit includes a first receiver, a first transmitter and a first flag signal selector. The first transmitter is coupled to the first receiver, and the first flag signal selector is coupled between the first receiver and the first transmitter. The second driving circuit, coupled to the first driving circuit, includes a second receiver, a second transmitter and a second flag signal selector. The second transmitter is coupled to the second receiver, and the second flag signal selector is coupled between the second receiver and the second transmitter.

公开(公告)号：US12142190B1

公开(公告)日：2024-11-12

申请号：US18522263

申请日：2023-11-29

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chieh-An Lin ,  Chun-Wei Kang ,  Po-Hsiang Fang ,  Keko-Chun Liang ,  Jhih-Siou Cheng ,  Nien-Tsung Hsueh ,  Che-Wei Yeh ,  Yu-Hsiang Wang

IPC: G09G3/32 ,  G09G3/20

Abstract: A display control system for controlling a display panel having a plurality of display zones includes a main controller, a plurality of display driver circuits and a plurality of memories. Each of the display driver circuits is coupled to a corresponding display zone among the plurality of display zones, to control the corresponding display zone. Each of the memories is coupled to a corresponding display driver circuit among the plurality of display driver circuits, to store a compensation data for the corresponding display zone controlled by the corresponding display driver circuit. The plurality of display driver circuits are cascaded through a plurality of first transmission channels and connected through at least one second transmission channel, and each of the first transmission channels is coupled between two of the plurality of display driver circuits or between one of the plurality of display driver circuits and the main controller.

公开(公告)号：US20230005441A1

公开(公告)日：2023-01-05

申请号：US17855606

申请日：2022-06-30

Applicant: Novatek Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Hung-Ho Huang ,  Kang-Fan Yeh ,  Po-Hsiang Fang

IPC: G09G3/34 ,  G09G3/36

Abstract: A backlight driving device and an operating method thereof are provided to drive multiple backlight zones of a backlight panel. The backlight driving device includes an interface circuit and a driving circuit. The interface circuit receives main backlight data corresponding to a first backlight zone from a former stage device. The driving circuit drives the first backlight zone according to a main current level in a display refresh period of a backlight frame period, does not drive the first backlight zone in a demotion blur period which is prior to the display refresh period, and drives the first backlight zone according to a compensation current level in a vertical blanking period which succeeds the display refresh period. The driving circuit determines the main current level according to the main backlight data, and the compensation current level is lower than the main current level.

公开(公告)号：US20220375403A1

公开(公告)日：2022-11-24

申请号：US17881404

申请日：2022-08-04

Applicant: NOVATEK MICROELECTRONICS CORP.

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

IPC: G09G3/32

Abstract: The present disclosure relates to a driving method for a display device and a display device. The display device includes a display driver, the display driver includes a plurality of driving channels each of which drives corresponding display unit according to display data in a pulse width modulation manner within one frame period, the method comprises: selectively enabling, in each sub-frame subset among a plurality of different sub-frame subsets of the frame period, different channel subset among a plurality of channel subsets of the plurality of driving channels to drive corresponding display unit, wherein each channel subset of the plurality of channel subsets includes two or more driving channels among the plurality of driving channels.