公开(公告)号：US20230206801A1

公开(公告)日：2023-06-29

申请号：US17646198

申请日：2021-12-28

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： JHIH-SIOU CHENG ,  YEN-RU KUO ,  CHIH-HSIEN CHOU

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2330/021 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2310/08

Abstract: A display driver and a driving method thereof is disclosed. The display driver includes at least one first latch, at least one second latch, an output buffer, and a comparator. The first latch receives input data. The input terminal of the second latch is coupled to the output terminal of the first latch. The output buffer, including at least one variable current source, is coupled to the second latch. The comparator is coupled to the first latch, the second latch, and the variable current source. The comparator generates at least one control signal of the variable current source.

公开(公告)号：US20240112612A1

公开(公告)日：2024-04-04

申请号：US18528180

申请日：2023-12-04

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： JHIH-SIOU CHENG ,  YEN-RU KUO ,  CHIH-HSIEN CHOU

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2330/021

Abstract: A display driver and a driving method thereof is disclosed. The display driver includes at least one first latch, at least one second latch, an output buffer, and a comparator. The first latch receives input data. The input terminal of the second latch is coupled to the output terminal of the first latch. The output buffer, including at least one variable current source, is coupled to the second latch. The comparator is coupled to the first latch, the second latch, and the variable current source. The comparator generates at least one control signal of the variable current source.

公开(公告)号：US20230351954A1

公开(公告)日：2023-11-02

申请号：US18318965

申请日：2023-05-17

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： JHIH-SIOU CHENG

IPC: G09G3/3225 ,  G09G3/20 ,  H01L23/00

CPC classification number: G09G3/3225 ,  G09G3/2096 ,  H01L24/06 ,  G09G2300/0842 ,  G09G2330/021 ,  G09G2320/0626 ,  H01L2224/06155 ,  H01L23/49838

Abstract: A display driver chip for driving a plurality of pixels of a display panel is provided. The proposed display driver chip is attached on a chip on film package and includes a plurality of input power pads, output power pads, output data pads and a power multiplexer. The output power pads and output data pads are located on the same side of the display driver chip. And the power multiplexer is adapted to receive a plurality of power voltages such that the power multiplexer selects one power voltage out of the plurality of power voltages for outputting to one of the output power pads. By employing the proposed display driver chip, a high or low power voltage can be selected to drive the display panel according to the brightness to be shown. As such, the present invention is effective in reducing IC power consumption and suppressing redundant power waste.