公开(公告)号：US09270112B2

公开(公告)日：2016-02-23

申请号：US13865210

申请日：2013-04-18

Applicant: Novatek Microelectronics Corp.

Inventor： Ju-Lin Huang ,  Che-Lun Hsu ,  Jhih-Siou Cheng ,  Chun-Yung Cho

IPC: H02H9/02 ,  H02H9/04 ,  G09G3/20

CPC classification number: H02H9/046 ,  G09G3/20 ,  G09G2310/027 ,  G09G2320/0276 ,  G09G2330/028 ,  G09G2330/04 ,  G09G2330/06 ,  H03M1/00 ,  H03M1/0827 ,  H03M1/808

Abstract: A driving circuit includes several first electrostatic current limiting resistors and several digital to analog converter (DAC) units. First ends of these first electrostatic current limiting resistors common coupled to a global path to receive a reference voltage. These DAC units respectively coupled to second ends of the first electrostatic current limiting resistors one-on-one to receive the reference voltage through the first electrostatic current limiting resistors.

Abstract translation: 驱动电路包括几个第一静电电流限制电阻器和几个数模转换器（DAC）单元。 这些第一静电电流限制电阻的第一端公共耦合到全局路径以接收参考电压。 这些DAC单元分别耦合到第一静电电流限制电阻器的第二端，以通过第一静电电流限制电阻器接收参考电压。

公开(公告)号：US20150339960A1

公开(公告)日：2015-11-26

申请号：US14645434

申请日：2015-03-12

Applicant: Novatek Microelectronics Corp.

Inventor： Ju-Lin Huang ,  Jhih-Siou Cheng ,  Chun-Yung Cho ,  Chia-En Wu

IPC: G09G3/00

CPC classification number: G09G3/20 ,  G09G2330/04 ,  G09G2330/06

Abstract: A display driving module including a driving circuit portion and a non-driving circuit portion is provided. The driving circuit portion is controlled by a system circuit block. The driving circuit portion includes driving channels for driving a display panel. First ESD protection devices are disposed in the driving circuit portion corresponding to the driving channels for providing at least one discharge path. The non-driving circuit portion electrically connects the system circuit block, the driving circuit portion and the display panel. At least one of second ESD protection devices is disposed in at least one of the driving circuit portion, the non-driving circuit portion, the system circuit block and the display panel corresponding to the first ESD protection devices. The second ESD protection devices cooperate with the first ESD protection devices to provide the discharge path. An image display system including the foregoing display driving module is also provided.

Abstract translation: 提供了包括驱动电路部分和非驱动电路部分的显示驱动模块。 驱动电路部分由系统电路块控制。 驱动电路部分包括用于驱动显示面板的驱动通道。 第一ESD保护装置设置在对应于驱动通道的驱动电路部分中，用于提供至少一个放电路径。 非驱动电路部分电连接系统电路块，驱动电路部分和显示面板。 至少一个第二ESD保护器件设置在驱动电路部分，非驱动电路部分，系统电路块和对应于第一ESD保护器件的显示面板中的至少一个中。 第二ESD保护装置与第一ESD保护装置配合以提供放电路径。 还提供了包括上述显示驱动模块的图像显示系统。

公开(公告)号：US09142169B2

公开(公告)日：2015-09-22

申请号：US13736091

申请日：2013-01-08

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Ju-Lin Huang ,  Pang-Chan Hung

IPC: G09G3/36

CPC classification number: G09G3/36 ,  G09G3/3685 ,  G09G2310/027

Abstract: A digital to analog converter for a source driver chip of a liquid crystal display device is disclosed. The digital to analog converter comprises an output terminal for outputting an output voltage, a plurality of receiving terminals for receiving a plurality of Gamma voltages, and a plurality of transmission paths comprising a plurality of first-type transistors coupled between the plurality of receiving terminals and the output terminal, respectively, for outputting one of the plurality of Gamma voltages as the output voltage according to a digital select signal; wherein a first transmission path corresponding to a first receiving terminal receiving a first Gamma voltage closest to a middle voltage among the plurality of Gamma voltages has lower on-resistance than other transmission paths among the plurality of transmission paths when a same source-to-gate voltage is applied.

Abstract translation: 公开了一种用于液晶显示装置的源极驱动器芯片的数模转换器。 数模转换器包括用于输出输出电压的输出端子，用于接收多个伽马电压的多个接收端子以及耦合在多个接收端子之间的多个第一型晶体管的多个传输路径，以及多个传输路径 输出端子，用于根据数字选择信号输出多个伽马电压中的一个作为输出电压; 其中对应于接收第一接收端的第一传输路径，当多个伽马电压中的最接近中间电压的第一伽马电压具有相同的源极到栅极之间的多个传输路径中的其它传输路径的导通电阻较低 施加电压。

公开(公告)号：US20140139364A1

公开(公告)日：2014-05-22

申请号：US13925849

申请日：2013-06-25

Applicant: Novatek Microelectronics Corp.

Inventor： Ju-Lin Huang ,  Jhih-Siou Cheng ,  Chun-Yung Cho ,  Chieh-An Lin

IPC: H03M1/66

CPC classification number: H03M1/06 ,  G09G3/20 ,  G09G2300/0421 ,  G09G2310/027 ,  G09G2310/0275 ,  G09G2320/0276 ,  H03M1/66 ,  H03M1/765

Abstract: A driving circuit includes a plurality of reference voltage lines and a digital to analog converter. The reference voltage lines are configured for respectively transmitting different grayscale reference voltages, in which the grayscale reference voltages are divided into at least two groups, and the wire diameter/wire width of at least one reference voltage line among the reference voltage lines of a first voltage group among the at least two groups is different from the wire diameters/wire widths of the reference voltage lines of a second voltage group among the at least two groups. The digital to analog converter is coupled to the reference voltage lines to receive the grayscale reference voltages and is for converting a digital signal into a grayscale voltage according to the grayscale reference voltages.

Abstract translation: 驱动电路包括多个参考电压线和数模转换器。 参考电压线被配置为分别传输不同的灰度参考电压，其中灰度参考电压被划分为至少两组，并且第一个参考电压的参考电压线中的至少一个参考电压线的线径/线宽 所述至少两组中的电压组与所述至少两组中的第二电压组的参考电压线的线径/线宽不同。 数模转换器耦合到参考电压线以接收灰度参考电压，并且用于根据灰度参考电压将数字信号转换成灰度级电压。

公开(公告)号：US12243472B2

公开(公告)日：2025-03-04

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

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：US12190793B2

公开(公告)日：2025-01-07

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

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：US11900896B2

公开(公告)日：2024-02-13

申请号：US17881622

申请日：2022-08-05

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Yen-Kai Chen ,  Jui-Chan Chang ,  Chih-Hsien Chou

IPC: G09G3/32 ,  G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/32 ,  G09G2310/0248 ,  G09G2310/0291 ,  G09G2310/061 ,  G09G2330/023

Abstract: A source driver includes a plurality of output terminals and a plurality of driving channels. Each of the plurality of driving channels is coupled to an output terminal among the plurality of output terminals and includes an output buffer, an output enable switch and a charge sharing circuit. The output enable switch is coupled between the output buffer and the corresponding output terminal. The charge sharing circuit is coupled to the corresponding output terminal. Wherein, the charge sharing circuits of at least two of the plurality of driving channels are commonly coupled to a charge sharing bus.

公开(公告)号：US20230351948A1

公开(公告)日：2023-11-02

申请号：US18139682

申请日：2023-04-26

Applicant: NOVATEK MICROELECTRONICS CORP.

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

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0272 ,  G09G2310/0202 ,  G09G2320/0233 ,  G09G2330/025 ,  G09G2300/06

Abstract: A source driver and a driving system for driving an LED panel, and an LED display system are provided. The driving system includes: a plurality of source drivers, for respectively supplying driving currents to channels of different portions on the LED panel, and each source driver includes: a plurality of driving circuits, which are in one-to-one correspondence with the plurality of channels on the LED panel, and are connected to a same current control line, each driving circuit being configured to supply a driving current to a corresponding channel, wherein, the supplied driving current is associated with a voltage on the current control line which the driving circuit is connected with. When one or more driving circuits switch between a non-driving state and a driving state, the driving current being supplied by the driving circuit(s) being in the driving state in the plurality of source drivers is compensated.

公开(公告)号：US11800046B2

公开(公告)日：2023-10-24

申请号：US16807802

申请日：2020-03-03

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Jhih-Siou Cheng ,  Yi-Chuan Liu ,  Hung-Cheng Hsiao ,  Ying-Wen Chou

IPC: H04N5/268 ,  H04N5/38 ,  H04N5/44 ,  G06F13/40

CPC classification number: H04N5/268 ,  G06F13/4086 ,  H04N5/38 ,  H04N5/44

Abstract: A video transmission system is disclosed. The video transmission system comprises a multi-drop bus, a first source driving chip, a second source driving chip and a timing controller. The first source driving chip comprises a first source driving circuit and a first terminal circuit. The first terminal circuit is coupled to the multi-drop bus and the first source driving circuit for providing a first terminal resistor. The second source driving chip comprises a second source driving circuit and a second terminal circuit. The second terminal circuit is coupled to the multi-drop bus and the second source driving circuit for providing a second terminal resistor. The timing controller is coupled to the first source driving chip and the second source driving chip via the multi-drop bus.

公开(公告)号：US11670224B1

公开(公告)日：2023-06-06

申请号：US17570317

申请日：2022-01-06

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Chun-Fu Lin

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0452 ,  G09G2300/06 ,  G09G2310/0202 ,  G09G2310/0267 ,  G09G2330/021

Abstract: A driving circuit for a light-emitting diode (LED) panel includes a first current source and a second current source. The first current source, coupled to a current source terminal of the driving circuit, is configured to output a first current to the LED panel through the current source terminal. The second current source, coupled to a current sink terminal of the driving circuit, is configured to receive a second current from the LED panel through the current sink terminal.