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：US11956869B2

公开(公告)日：2024-04-09

申请号：US17964059

申请日：2022-10-12

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chih-Hsien Chou ,  Jhih-Siou Cheng ,  Jin-Yi Lin ,  Ren-Chieh Yang

IPC: H05B45/325 ,  G09G3/32 ,  H05B45/345 ,  H05B45/46 ,  H05B45/54

CPC classification number: H05B45/325 ,  G09G3/32 ,  H05B45/345 ,  H05B45/46 ,  H05B45/54

Abstract: A display driver circuit for controlling a display panel having a plurality of light-emission diode (LED) strings includes a plurality of current regulators and a control circuit. Each of the plurality of current regulators is configured to control one of the plurality of LED strings. The control circuit, coupled to the plurality of current regulators, is configured to generate a plurality of pulses in a plurality of pulse width modulation (PWM) signals and output each of the plurality of PWM signals to a respective current regulator among the plurality of current regulators. Wherein, the plurality of pulses are scrambled.

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：US11211016B2

公开(公告)日：2021-12-28

申请号：US16512413

申请日：2019-07-16

Applicant: Novatek Microelectronics Corp.

Inventor： Chih-Hsien Chou ,  Jhih-Siou Cheng ,  Jin-Yi Lin

IPC: G06F1/00 ,  G09G3/3291

Abstract: A source driver is configured to drive an organic light-emitting diode (OLED) display panel. The source driver includes a sensing circuit and an operational amplifier. The sensing circuit is configured to sense pixel information of an OLED pixel circuit through a sensing line of the OLED display panel. The operational amplifier includes an amplifier circuit and at least one switch circuit. The amplifier circuit includes at least one gain circuit. An input terminal of the amplifier circuit is coupled to an output terminal of the sensing circuit. Each of the at least one switch circuit is coupled between a pair of output terminals of a corresponding one of the at least one gain circuit.

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.

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：US20230378972A1

公开(公告)日：2023-11-23

申请号：US18106470

申请日：2023-02-06

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jin-Yi Lin ,  Jhih-Siou Cheng ,  Yung-Te Chang ,  Chih-Cheng Chen

IPC: H03M1/46 ,  H03M1/12 ,  H03M1/14

CPC classification number: H03M1/468 ,  H03M1/1245 ,  H03M1/462 ,  H03M1/145

Abstract: A sample and hold (S/H) circuit includes an analog-to-digital converter (ADC), a register and a digital-to-analog converter (DAC). The ADC receives an input signal and converts the input signal into a digital code. The register, coupled to the ADC, stores the digital code. The DAC, coupled to the register, converts the digital code into an output signal.

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.