公开(公告)号：US20190057659A1

公开(公告)日：2019-02-21

申请号：US15681480

申请日：2017-08-21

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Cheng-Wen Lin ,  Chin-Yuan Tu ,  Hui-Hung Chang ,  Chien-Yu Chen

IPC: G09G3/34

Abstract: A brightness compensation method and a brightness compensation circuit for a display device are provided. The brightness compensation method includes the following steps. Receive original image data. Receive backlight timing parameters. Perform brightness compensation according to the image data and the backlight timing parameters. The step of performing brightness compensation includes adjusting at least one of pixel driving data, a driving gamma level, and a driver boost level.

公开(公告)号：US09812054B2

公开(公告)日：2017-11-07

申请号：US14788805

申请日：2015-07-01

Applicant: Novatek Microelectronics Corp.

Inventor： Hsueh-Yen Yang ,  Kai-Min Yang ,  Chin-Yuan Tu ,  Feng-Ting Pai

IPC: G09G3/20

CPC classification number: G09G3/2011 ,  G09G2300/0439 ,  G09G2300/0452 ,  G09G2330/021 ,  G09G2340/0457

Abstract: A display driver configured to drive a display panel is provided. The display panel displays an image frame in a first display mode or a second display mode. The display driver includes a first display driving channel and a second display driving channel. The first and the second display driving channels are configured to drive the display panel to display the image frame by using a sub-pixel rendering method. In the second display mode, the second display driving channel drives sub-pixels on the display panel to display corresponding grayscales by using a plurality of gamma voltages. A voltage value of at least one gamma voltage among the gamma voltages is determined according to an arrangement of the sub-pixels on the display panel. Furthermore, a display apparatus is also provided.

公开(公告)号：US20160163286A1

公开(公告)日：2016-06-09

申请号：US14788805

申请日：2015-07-01

Applicant: Novatek Microelectronics Corp.

Inventor： Hsueh-Yen Yang ,  Kai-Min Yang ,  Chin-Yuan Tu ,  Feng-Ting Pai

IPC: G09G5/10 ,  G09G5/02

CPC classification number: G09G3/2011 ,  G09G2300/0439 ,  G09G2300/0452 ,  G09G2330/021 ,  G09G2340/0457

Abstract: A display driver configured to drive a display panel is provided. The display panel displays an image frame in a first display mode or a second display mode. The display driver includes a first display driving channel and a second display driving channel. The first and the second display driving channels are configured to drive the display panel to display the image frame by using a sub-pixel rendering method. In the second display mode, the second display driving channel drives sub-pixels on the display panel to display corresponding grayscales by using a plurality of gamma voltages. A voltage value of at least one gamma voltage among the gamma voltages is determined according to an arrangement of the sub-pixels on the display panel. Furthermore, a display apparatus is also provided.

Abstract translation: 提供了配置为驱动显示面板的显示驱动器。 显示面板以第一显示模式或第二显示模式显示图像帧。 显示驱动器包括第一显示驱动通道和第二显示驱动通道。 第一和第二显示器驱动通道被配置为通过使用子像素渲染方法驱动显示面板来显示图像帧。 在第二显示模式中，第二显示驱动通道驱动显示面板上的子像素，通过使用多个伽马电压来显示相应的灰度级。 根据显示面板上的子像素的布置来确定伽马电压中的至少一个伽马电压的电压值。 此外，还提供了显示装置。

公开(公告)号：US20240069675A1

公开(公告)日：2024-02-29

申请号：US17898393

申请日：2022-08-29

Applicant: Novatek Microelectronics Corp.

Inventor： Shih Hua Lee ,  Chin-Yuan Tu

IPC: G06F3/041 ,  G06F1/06 ,  H03K5/00

CPC classification number: G06F3/04184 ,  G06F1/06 ,  H03K5/00006

Abstract: An oscillating signal adjusting circuit is provided. The oscillating signal adjusting circuit is adapted to generate an internal clock signal of a touch and display driver integrated circuit and includes a frequency shift circuit and a spread spectrum control circuit. The frequency shift circuit acquires a first setting data indicated by a mode control signal, and determines whether to shift a frequency of the input clock signal according to the first setting data to generate a first output clock signal. The spread spectrum control circuit to acquires a second setting data indicated by the mode control signal, and determines whether to perform a spreading spectrum operation on the first output clock signal according to the second setting data to generate the internal clock signal. The mode control signal has a first voltage level in a display period and has a second voltage level in a touch sensing period.

公开(公告)号：US10304393B2

公开(公告)日：2019-05-28

申请号：US15681480

申请日：2017-08-21

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Cheng-Wen Lin ,  Chin-Yuan Tu ,  Hui-Hung Chang ,  Chien-Yu Chen

IPC: G09G3/34

Abstract: A brightness compensation method and a brightness compensation circuit for a display device are provided. The brightness compensation method includes the following steps. Receive original image data. Receive backlight timing parameters. Perform brightness compensation according to the image data and the backlight timing parameters. The step of performing brightness compensation includes adjusting at least one of pixel driving data, a driving gamma level, and a driver boost level.