公开(公告)号：US20240046856A1

公开(公告)日：2024-02-08

申请号：US18365247

申请日：2023-08-04

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Sheng Ma ,  Jhih-Siou Cheng ,  Chun-Fu Lin ,  Jin-Yi Lin

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0275 ,  G09G2310/0267 ,  G09G2310/0251 ,  G09G2330/04

Abstract: A light-emitting diode (LED) panel and a driving device therefore is provided. The driving device includes a source driver and a scan driver. The source driver is coupled to a plurality of data lines disposed in the LED panel. The source driver outputs driving currents to the data lines in any one of a plurality of scan line periods, to drive an LED array of the LED panel. The scan driver is coupled to a plurality of scan lines disposed in the LED panel, wherein the scan driver scans the scan lines during the plurality of scan line periods. In an active period of any one of the scan line periods, the scan driver applies an enable voltage to a current scan line among the scan lines, and the scan driver applies a pre-charge voltage to other scan line among the scan lines.

公开(公告)号：US20230306900A1

公开(公告)日：2023-09-28

申请号：US18205199

申请日：2023-06-02

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Yu-Sheng Ma ,  Jhih-Siou Cheng ,  Chun-Fu Lin ,  Jin-Yi Lin ,  Ju-Lin Huang

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/064 ,  G09G2330/021

Abstract: The present disclosure relates to a driver for driving a light emitting unit array of a display device, the driver including: a plurality of driving units, each of the plurality of driving units includes: a driving circuit configured to provide a driving current to a corresponding column of light emitting units in the light emitting unit array according to a pulse width modulation signal, during a turn-on period of a channel switch; a charge path circuit configured to be connected in parallel with the driving circuit, and to be turned on during the turn-on period of the channel switch to form a charge path; and a discharge path circuit configured to be connected in parallel with the driving circuit, and to be turned-on after the channel switch is turned off, to form a discharge path.

公开(公告)号：US11282438B2

公开(公告)日：2022-03-22

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：US11217152B1

公开(公告)日：2022-01-04

申请号：US17111449

申请日：2020-12-03

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yu-Sheng Ma ,  Jhih-Siou Cheng ,  Chun-Fu Lin ,  Tso-Sheng Chan ,  Ren-Chieh Yang

IPC: G09G3/32

Abstract: The present invention provides a source driver for driving a light emitting diode panel. The source driver includes a buffer including an output terminal; and a plurality of driving circuits coupled to the buffer. Each of the plurality of driving circuits includes a constant current transistor including a gate controlled by a node voltage of the output terminal of the buffer; and a compensation unit for compensating the node voltage of the output terminal of the buffer.

公开(公告)号：US11823635B2

公开(公告)日：2023-11-21

申请号：US17467443

申请日：2021-09-06

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chun-Fu Lin ,  Hsing-Kuo Chao ,  Jhih-Siou Cheng ,  Ju-Lin Huang ,  Wen-Hsin Cheng

IPC: G09G3/30 ,  G09G3/34 ,  G02F1/1335 ,  G02F1/13357

CPC classification number: G09G3/3426 ,  G02F1/133603 ,  G02F1/133612 ,  G02F1/133628 ,  G09G2300/0408

Abstract: An LED backlight driver includes at least one driving chip configured to drive a backlight module. The at least one driving chip is disposed on at least one chip-on-film package, and not in direct contact with the backlight module to reduce heat transfer to the backlight module.

公开(公告)号：US11557249B2

公开(公告)日：2023-01-17

申请号：US17169519

申请日：2021-02-07

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chun-Fu Lin ,  Jhih-Siou Cheng ,  Yu-Sheng Ma ,  Jin-Yi Lin

IPC: G09G3/3216 ,  G09G3/3266

Abstract: The present invention provides a method of controlling a display panel. The display panel includes a plurality of subpixels and a plurality of scan lines coupled to the plurality of subpixels. The method includes steps of: scanning a first scan line among the plurality of scan lines to turn on at least one of the plurality of subpixels coupled to the first scan line during a subframe period among a display frame period; and discharging a second scan line among the plurality of scan lines during a non-display period following the subframe period. Wherein, the second scan line is different from the first scan line.

公开(公告)号：US11291095B1

公开(公告)日：2022-03-29

申请号：US17216666

申请日：2021-03-29

Applicant: NOVATEK Microelectronics Corp.

Inventor： Tso-Sheng Chan ,  Jin-Yi Lin ,  Chun-Fu Lin ,  Jhih-Siou Cheng ,  Yu-Sheng Ma

IPC: H05B45/39

Abstract: A coupling compensation module is provided, for compensating a channel voltage of a channel outputted by a constant current circuit of a light emitting diode (LED) driver. The coupling compensation module includes a detecting circuit, for detecting a voltage variation of the channel voltage, to generate a detection result; and a compensation circuit, for compensating the voltage variation of the channel voltage according to the detection result.

公开(公告)号：US20210390901A1

公开(公告)日：2021-12-16

申请号：US17111449

申请日：2020-12-03

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yu-Sheng Ma ,  Jhih-Siou Cheng ,  Chun-Fu Lin ,  Tso-Sheng Chan ,  Ren-Chieh Yang

IPC: G09G3/32

Abstract: The present invention provides a source driver for driving a light emitting diode panel. The source driver includes a buffer including an output terminal; and a plurality of driving circuits coupled to the buffer. Each of the plurality of driving circuits includes a constant current transistor including a gate controlled by a node voltage of the output terminal of the buffer; and a compensation unit for compensating the node voltage of the output terminal of the buffer.

公开(公告)号：US20210375200A1

公开(公告)日：2021-12-02

申请号：US17169519

申请日：2021-02-07

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chun-Fu Lin ,  Jhih-Siou Cheng ,  Yu-Sheng Ma ,  Jin-Yi Lin

IPC: G09G3/3216 ,  G09G3/3266

Abstract: The present invention provides a method of controlling a display panel. The display panel includes a plurality of subpixels and a plurality of scan lines coupled to the plurality of subpixels. The method includes steps of: scanning a first scan line among the plurality of scan lines to turn on at least one of the plurality of subpixels coupled to the first scan line during a subframe period among a display frame period; and discharging a second scan line among the plurality of scan lines during a non-display period following the subframe period. Wherein, the second scan line is different from the first scan line.

公开(公告)号：US20210343232A1

公开(公告)日：2021-11-04

申请号：US17242807

申请日：2021-04-28

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Yu-Sheng Ma ,  Jhih-Siou Cheng ,  Chun-Fu Lin ,  Jin-Yi Lin ,  Ju-Lin Huang

IPC: G09G3/32

Abstract: The present disclosure relates to a driver for driving a light emitting unit array of a display device, the driver including: a plurality of driving units, each of the plurality of driving units includes: a driving circuit configured to provide a driving current to a corresponding column of light emitting units in the light emitting unit array according to a pulse width modulation signal, during a turn-on period of a channel switch; a regulating circuit configured to be connected in parallel with the driving circuit and be turned on according to the pulse width modulation signal to form a path with the corresponding column of the light emitting units, such that a current associated with the light emitting units flows through the path.