公开(公告)号：US20140111494A1

公开(公告)日：2014-04-24

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：US20140071106A1

公开(公告)日：2014-03-13

申请号：US13677314

申请日：2012-11-15

Applicant: NOVATEK MICROELECTRONICS CORP.

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

IPC: G09G1/00

CPC classification number: G09G3/3696 ,  G09G1/005 ,  G09G3/3688 ,  G09G2320/0673

Abstract: A source driver includes a first drive channel circuit, a voltage controller and a first programmable voltage buffer unit. The first drive channel circuit receives a first pixel data from the timing controller via a data bus, converts the first pixel data to a first drive voltage according to a first reference voltage group, and drives a display panel by the first drive voltage. The voltage controller receives a voltage command from the timing controller, generates and changes a first reference voltage configuration data according to the voltage command. The first programmable voltage buffer unit is coupled to the voltage controller and the first drive channel circuit, and receives the first reference voltage configuration data to generate and adjust the first reference voltage group for applying to the first drive channel circuit. Furthermore, a method for updating a new gamma curve by the source driver is also provided.

Abstract translation: 源驱动器包括第一驱动通道电路，电压控制器和第一可编程电压缓冲器单元。 第一驱动通道电路经由数据总线从定时控制器接收第一像素数据，根据第一参考电压组将第一像素数据转换为第一驱动电压，并且通过第一驱动电压驱动显示面板。 电压控制器从定时控制器接收电压指令，根据电压指令产生并改变第一参考电压配置数据。 第一可编程电压缓冲器单元耦合到电压控制器和第一驱动通道电路，并且接收第一参考电压配置数据以产生和调整第一参考电压组以施加到第一驱动通道电路。 此外，还提供了用于由源驱动器更新新伽玛曲线的方法。

公开(公告)号：US12100339B1

公开(公告)日：2024-09-24

申请号：US18196415

申请日：2023-05-11

Applicant: NOVATEK Microelectronics Corp.

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

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0202 ,  G09G2310/0208 ,  G09G2310/0267 ,  G09G2310/08

Abstract: A method of scanning a display panel having a plurality of rows of pixels includes steps of: generating a first accumulated number; calculating a first scan number according to the first accumulated number; scanning a present row of pixels having the first scan number among the plurality of rows of pixels; accumulating the first accumulated number to generate a second accumulated number; calculating a second scan number according to the second accumulated number; and scanning a next row of pixels having the second scan number among the plurality of rows of pixels after scanning the present row of pixels. Wherein, the plurality of rows of pixels are scanned in a scan order different from a numbering order of the plurality of rows of pixels.

公开(公告)号：US11682343B2

公开(公告)日：2023-06-20

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

CPC classification number: G09G3/32 ,  G09G2310/08 ,  G09G2320/0247

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：US20230005451A1

公开(公告)日：2023-01-05

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: 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：US11482160B2

公开(公告)日：2022-10-25

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：US11430382B2

公开(公告)日：2022-08-30

申请号：US17409824

申请日：2021-08-24

Applicant: Novatek Microelectronics Corp.

Inventor： Che-Wei Yeh ,  Keko-Chun Liang ,  Yu-Hsiang Wang ,  Po-Hsiang Fang ,  Ju-Lin Huang

IPC: G09G3/32

Abstract: A LED driving apparatus with differential signal interfaces is introduced, including: N-stages LED drivers, wherein the first stage LED driver receives a first data packet differential signal and a first clock differential signal and outputs a second data packet differential signal and a second clock differential signal, the Mth stage LED driver receives a Mth data packet differential signal and a Mth clock differential signal and outputs a (M+1)th data packet differential signal and a (M+1)th clock differential signal.

公开(公告)号：US11170702B2

公开(公告)日：2021-11-09

申请号：US17004025

申请日：2020-08-27

Applicant: Novatek Microelectronics Corp.

Inventor： Che-Wei Yeh ,  Keko-Chun Liang ,  Yu-Hsiang Wang ,  Po-Hsiang Fang ,  Ju-Lin Huang

IPC: G09G3/32

Abstract: A LED driving apparatus with differential signal interfaces is introduced, including: N-stages LED drivers, wherein the first stage LED driver receives a first data packet differential signal and a first clock differential signal and outputs a second data packet differential signal and a second clock differential signal, the Mth stage LED driver receives a Mth data packet differential signal and a Mth clock differential signal and outputs a (M+1)th data packet differential signal and a (M+1)th clock differential signal.

公开(公告)号：US20210304661A1

公开(公告)日：2021-09-30

申请号：US16919069

申请日：2020-07-01

Applicant: Novatek Microelectronics Corp.

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

IPC: G09G3/32

Abstract: A driver circuit configured to receive a display data and drive a display panel is provided. The display panel includes a plurality of light-emitting diode devices according to the display data. The driver circuit includes a data driver. The data driver is configured to output driving signals to drive the light-emitting diode devices according to the display data and operate in different operation modes according to a control signal. The data driver includes a plurality of output channels. The output channels output the driving signals to drive the light-emitting diode devices via respective output terminals of the driver circuit. An assignment relationship of the display data and the output channels is different in the different operation modes. A display apparatus including the driver circuit is also provided.

公开(公告)号：US20210150976A1

公开(公告)日：2021-05-20

申请号：US16953364

申请日：2020-11-20

Applicant: NOVATEK Microelectronics Corp.

Inventor： Hsu-Chih Wei ,  Po-Hsiang Fang ,  Keko-Chun Liang ,  Che-Wei Yeh ,  Ju-Lin Huang

IPC: G09G3/32

Abstract: The present disclosure provides a method for a display driver system and a display driver system. The method comprises: the control circuit transmitting a global signal and a first signal for a LED driver circuit in each stage to a first-stage LED driver circuit, wherein the global signal includes an command for indicating an operation mode of the LED driver circuit in each stage; the LED driver circuit in each stage determining the operation mode corresponding to the command according to the global signal, identifying a corresponding first signal of the LED driver circuit in the stage, and operating according to the determined operation mode and the corresponding first signal; and the LED driver circuit in each stage except for last stage transmitting the global signal to the LED driver circuit in its next stage, and in response to a completion of operation according to the determined operation mode and the corresponding first signal, transmitting the first signal for the LED driver circuit in each of sequential stages to the LED driver circuit in its next stage.