公开(公告)号：US20220343837A1

公开(公告)日：2022-10-27

申请号：US17726558

申请日：2022-04-22

Applicant: Novatek Microelectronics Corp.

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

IPC: G09G3/32

Abstract: A display driver for driving a display device including a pixel array is provided. The display driver includes a plurality of driving channels. The driving channels is configured to output driving signals in a pulse width modulation manner to drive the pixel array to illuminate in a first frame period which is being divided into a plurality of subframe periods. A first driving channel of the plurality of driving channels outputs a first driving signal in a first subframe period combination. A second driving channel of the plurality of driving channels outputs a second driving signal in a second subframe period combination different than the first subframe period combination. Each of the first subframe period combination and the second subframe period combination comprises at least one subframe period of the first frame period.

公开(公告)号：US20220122521A1

公开(公告)日：2022-04-21

申请号：US17074639

申请日：2020-10-20

Applicant: Novatek Microelectronics Corp.

Inventor： Yi-Yang Tsai ,  Chun-Fu Lin ,  Po-Hsiang Fang ,  Jhih-Siou Cheng

IPC: G09G3/32 ,  H05B45/325

Abstract: A driving device and a driving method of a display panel are provided. The driving device includes a current source and a control circuit. The current source makes a driving current flow through a light-emitting element path of a sub-pixel circuit of the display panel. During a display line period, the driving current has a normal current amount, and the control circuit controls a first switch in the light-emitting element path to adjust a duty cycle of the driving current in the light-emitting element path. During a sensing period, the driving current has a sensing current amount less than the normal current amount, the control circuit turns on the first switch, and the control circuit checks a voltage in the light-emitting element path to determine whether a light-emitting element in the light-emitting element path is open (or whether the light-emitting element is provided in the light-emitting element path).

公开(公告)号：US11295671B2

公开(公告)日：2022-04-05

申请号：US16827713

申请日：2020-03-24

Applicant: Novatek Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Po-Hsiang Fang ,  Chieh-An Lin ,  Keko-Chun Liang ,  Ju-Lin Huang

IPC: G09G3/3258

Abstract: A display driver and a display driving method are provided. The display driving is adapted for driving a display panel and sensing an electrical characteristic of the display panel. The display driver includes a first amplifier circuit. The first amplifier circuit is coupled to the display panel. The first amplifier circuit includes a first driving circuit, a first sensing circuit and a first operational amplifier. The first operational amplifier is coupled to the display panel through a first driving line and a first sensing line. The first driving circuit is configured to provide a first driving signal to the display panel through the first operational amplifier and the first driving line during a driving period. The first sensing circuit is configured to receive a first sensing signal from the display panel through the first operational amplifier and the first sensing line during a first sensing period.

公开(公告)号：US20200184870A1

公开(公告)日：2020-06-11

申请号：US16445227

申请日：2019-06-19

Applicant: Novatek Microelectronics Corp.

Inventor： Po-Hsiang Fang ,  Jhih-Siou Cheng ,  Wen-Ching Huang

IPC: G09G3/20

Abstract: A source driver is provided. The source driver includes an integrated circuit chip, a sensitive circuit and at least one bump. The sensitive circuit is disposed in the integrated circuit chip. The sensitive circuit includes at least one capacitor. The at least one bump is disposed in the integrated circuit chip, and the at least one bump is adjacent to the sensitive circuit.

公开(公告)号：US20190130824A1

公开(公告)日：2019-05-02

申请号：US16000891

申请日：2018-06-06

Applicant: Novatek Microelectronics Corp.

Inventor： Tzu-Chien Tzeng ,  Po-Hsiang Fang

IPC: G09G3/3225

Abstract: The disclosure provides a sensing apparatus and an operation method thereof. The sensing apparatus includes a sensing circuit, an analog-to-digital converter (ADC) circuit, a disturbing circuit and an output circuit. The sensing circuit is configured to output a sensing signal indicating a sensing result of a sensing line of the display panel. The ADC circuit is coupled to the sensing circuit to receive the sensing signal and outputs sensing data related to the sensing signal. The disturbing circuit is coupled to the ADC circuit to receive the sensing data and generates a time-variant disturbance component to disturb the sensing data to generate disturbed data. The output circuit is coupled to the disturbing circuit to receive the disturbed data.

公开(公告)号：US09875707B2

公开(公告)日：2018-01-23

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.

公开(公告)号：US09837053B1

公开(公告)日：2017-12-05

申请号：US15176131

申请日：2016-06-07

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Jhih-Siou Cheng ,  Po-Hsiang Fang

IPC: G09G5/393

CPC classification number: G09G5/393 ,  G09G3/20 ,  G09G3/3611 ,  G09G3/3677 ,  G09G2310/04 ,  G09G2310/067 ,  G09G2320/0252 ,  G09G2320/029 ,  G09G2320/103 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2360/08 ,  G09G2360/12

Abstract: A display method includes steps of: receiving, by the controller, a first frame and a second frame from an input data; up-converting, by the controller, a frame rate of the input data to produce a third frame based on the first frame and the second frame; identifying, by the controller, a static image content of the third frame according to a comparison of the first frame and the second frame; controlling, by the controller, the driver circuit not to update data of pixels within a static display area of the display panel corresponding to the static image content during the period of time that the third frame is displayed by the display panel.

公开(公告)号：US20170018242A1

公开(公告)日：2017-01-19

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

CPC classification number: G09G3/3688 ,  G09G2310/0251

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.

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，栅极驱动电路和源极驱动电路。 在帧周期的功能子周期期间，栅极驱动器电路同时驱动多条栅极线，并且源极驱动电路驱动多条源极线，以便对连接到栅极的多个像素执行功能 线条。 在帧周期的扫描子周期中，栅极驱动电路根据扫描序列驱动栅极线，并且源极驱动电路根据第一扫描子像素中的栅极驱动电路的扫描顺序相应地驱动源极线 周期，以便显示图像。

公开(公告)号：US09299309B2

公开(公告)日：2016-03-29

申请号：US13957440

申请日：2013-08-02

Applicant: NOVATEK Microelectronics Corp.

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

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3614 ,  G09G3/3688 ,  G09G2320/0673

Abstract: The present invention discloses an integrated source driver for a liquid crystal display device. The integrated source driver includes a reference voltage generating circuit, for providing a plurality of adjustable voltage ranges within a supply voltage and a ground level, and a reference voltage selecting circuit, including a plurality of digital to analog converters, for selecting and generating a plurality of internal reference voltages from the plurality of adjustable voltage ranges, respectively. The plurality of adjustable voltage ranges decrease progressively.

Abstract translation: 本发明公开了一种用于液晶显示装置的集成源极驱动器。 集成源极驱动器包括用于在电源电压和地电平内提供多个可调电压范围的参考电压产生电路，以及包括多个数模转换器的参考电压选择电路，用于选择和产生多个 分别来自多个可调电压范围的内部基准电压。 多个可调电压范围逐渐降低。

公开(公告)号：US20140132587A1

公开(公告)日：2014-05-15

申请号：US13957440

申请日：2013-08-02

Applicant: NOVATEK Microelectronics Corp.

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

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3614 ,  G09G3/3688 ,  G09G2320/0673

Abstract: The present invention discloses an integrated source driver for a liquid crystal display device. The integrated source driver includes a reference voltage generating circuit, for providing a plurality of adjustable voltage ranges within a supply voltage and a ground level, and a reference voltage selecting circuit, including a plurality of digital to analog converters, for selecting and generating a plurality of internal reference voltages from the plurality of adjustable voltage ranges, respectively. The plurality of adjustable voltage ranges decrease progressively.

Abstract translation: 本发明公开了一种液晶显示装置的集成源极驱动器。 集成源极驱动器包括用于在电源电压和地电平内提供多个可调电压范围的参考电压产生电路，以及包括多个数模转换器的参考电压选择电路，用于选择和产生多个 分别来自多个可调电压范围的内部基准电压。 多个可调电压范围逐渐降低。