公开(公告)号：US11490481B2

公开(公告)日：2022-11-01

申请号：US17218068

申请日：2021-03-30

Applicant: Novatek Microelectronics Corp.

Inventor： Jen-Chung Chang ,  Yi-Nung Hu

IPC: H05B45/325

Abstract: A pulse width modulation (PWM) driver and an operation method thereof are provided. The PWM driver includes a PWM generating circuit and multiple driving channels. The PWM generating circuit generates multiple PWM signals. The driving channels drive multiple light emitting elements of a light emitting element array. Each of the driving channels includes a PWM selection circuit. The PWM selection circuits are coupled to the PWM generating circuit to receive the PWM signals. Each of the PWM selection circuits selects a PWM signal from the PWM signals according to corresponding sub-pixel data. The selected PWM signal is output to at least one corresponding light emitting element among the light emitting elements.

公开(公告)号：US20220322509A1

公开(公告)日：2022-10-06

申请号：US17218068

申请日：2021-03-30

Applicant: Novatek Microelectronics Corp.

Inventor： Jen-Chung Chang ,  Yi-Nung Hu

IPC: H05B45/325

Abstract: A pulse width modulation (PWM) driver and an operation method thereof are provided. The PWM driver includes a PWM generating circuit and multiple driving channels. The PWM generating circuit generates multiple PWM signals. The driving channels drive multiple light emitting elements of a light emitting element array. Each of the driving channels includes a PWM selection circuit. The PWM selection circuits are coupled to the PWM generating circuit to receive the PWM signals. Each of the PWM selection circuits selects a PWM signal from the PWM signals according to corresponding sub-pixel data. The selected PWM signal is output to at least one corresponding light emitting element among the light emitting elements.

公开(公告)号：US20150102989A1

公开(公告)日：2015-04-16

申请号：US14187310

申请日：2014-02-23

Applicant: NOVATEK Microelectronics Corp.

Inventor： Hsueh-Yi Lee ,  Yi-Nung Hu

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3696 ,  G09G2310/0248 ,  G09G2320/0204 ,  G09G2330/021

Abstract: An equalizing method for a driving device includes determining whether a polarity of an output voltage changes from a first time period to a second time period according to an inversion method of a display device coupled to the driving device, for generating a polarity inversion signal; and determining whether to perform an equalization operation on the output voltage in a switching period between the first time period and the second time period according to the polarity inversion signal, current line information and previous line information.

Abstract translation: 用于驱动装置的均衡方法包括根据耦合到驱动装置的显示装置的反演方法确定输出电压的极性是否从第一时间段变化到第二时间段，以产生极性反转信号; 以及根据极性反转信号，当前行信息和前一行信息，确定是否在第一时间段和第二时间段之间的切换周期内对输出电压进行均衡操作。

公开(公告)号：US20140043375A1

公开(公告)日：2014-02-13

申请号：US13953761

申请日：2013-07-30

Applicant: Novatek Microelectronics Corp.

Inventor： Yi-Nung Hu

IPC: G09G3/36

CPC classification number: G09G3/36 ,  G09G3/3688 ,  G09G2310/0297 ,  G09G2330/08

Abstract: A driving apparatus of a liquid crystal display (LCD) panel including a source driving unit and a channel selection unit is provided. The source driving unit is configured to drive the LCD panel and includes a plurality of data driving channels and at least one dummy driving channel. The channel selection unit is coupled to the source driving unit. The channel selection unit outputs driving signals of a part of the data driving channels and the at least one dummy driving channel to drive the LCD panel based on a testing result under a normal operation. Alternatively, the channel selection unit outputs the driving signals of the data driving channels to drive the LCD panel based on the testing result under the normal operation.

Abstract translation: 提供一种包括源极驱动单元和通道选择单元的液晶显示器（LCD）面板的驱动装置。 源驱动单元被配置为驱动LCD面板并且包括多个数据驱动通道和至少一个虚拟驱动通道。 频道选择单元耦合到源驱动单元。 通道选择单元输出一部分数据驱动通道的驱动信号和至少一个虚拟驱动通道，以便在正常操作下的测试结果驱动LCD面板。 或者，频道选择单元根据正常操作下的测试结果来输出数据驱动频道的驱动信号以驱动LCD面板。