公开(公告)号：US20200312208A1

公开(公告)日：2020-10-01

申请号：US16365711

申请日：2019-03-27

Applicant: Novatek Microelectronics Corp.

Inventor： Jen-Wei Li ,  Jen-Hao Liao

IPC: G09G3/20

Abstract: A display driver that includes a first driver integrated circuit being cascaded to a second driver integrated circuit is introduced. The first driver integrated circuit includes a first gamma voltage generator that is configured to output a plurality of first gamma voltages to output terminals of the first gamma voltage generator. The second driver integrated circuit includes a second gamma voltage generator that is configured to output a plurality of second gamma voltages to output terminals of the second gamma voltage generator. Each of the output terminals of the first gamma voltage generator is corresponded to one of the output terminals of the gamma voltage generator. At least one of the output terminals of the first gamma voltage generator is electrically coupled to the corresponding one of the output terminals of the second gamma voltage generator to output at least one common gamma voltage of the first gamma voltages and the second gamma voltages. A method adapted to the display driver is also introduced.

公开(公告)号：US20190221175A1

公开(公告)日：2019-07-18

申请号：US16247595

申请日：2019-01-15

Applicant: Novatek Microelectronics Corp.

Inventor： Jen-Wei Li ,  Jen-Hao Liao

IPC: G09G3/36 ,  G09G3/3258

Abstract: A source driver and an operation method thereof are provided. The source driver includes a chopper circuit and a source driver circuit. A first sub-pixel and a second sub-pixel are temporally or spatially adjacent to each other. The chopper circuit adds original gray-scale data of the first sub-pixel with a first value to serve as new gray-scale data of the first sub-pixel and deducts original gray-scale data of the second sub-pixel by a second value to serve as new gray-scale data of the second sub-pixel. The source driver circuit generates a first driving voltage for the first sub-pixel according to the new gray-scale data of the first sub-pixel and generates a second driving voltage for the second sub-pixel according to the new gray-scale data of the second sub-pixel.

公开(公告)号：USRE49726E1

公开(公告)日：2023-11-14

申请号：US17546063

申请日：2021-12-09

Applicant: Novatek Microelectronics Corp.

Inventor： Jen-Wei Li ,  Jen-Hao Liao

IPC: G09G3/20 ,  G09G3/36

CPC classification number: G09G3/20 ,  G09G3/3685 ,  G09G2310/027 ,  G09G2310/0243 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2320/0276 ,  G09G2320/0673 ,  G09G2330/028

Abstract: A display driver that includes a first driver integrated circuit being cascaded to a second driver integrated circuit is introduced. The first driver integrated circuit includes a first gamma voltage generator that is configured to output a plurality of first gamma voltages to output terminals of the first gamma voltage generator. The second driver integrated circuit includes a second gamma voltage generator that is configured to output a plurality of second gamma voltages to output terminals of the second gamma voltage generator. Each of the output terminals of the first gamma voltage generator is corresponded to one of the output terminals of the second gamma voltage generator. At least one of the output terminals of the first gamma voltage generator is electrically coupled to the corresponding one of the output terminals of the second gamma voltage generator to output at least one common gamma voltage of the first gamma voltages and the second gamma voltages. A method adapted to the display driver is also introduced.

公开(公告)号：US10755655B2

公开(公告)日：2020-08-25

申请号：US16247595

申请日：2019-01-15

Applicant: Novatek Microelectronics Corp.

Inventor： Jen-Wei Li ,  Jen-Hao Liao

IPC: G09G3/36 ,  G09G3/3275 ,  G09G3/3258

Abstract: A source driver and an operation method thereof are provided. The source driver includes a chopper circuit and a source driver circuit. A first sub-pixel and a second sub-pixel are temporally or spatially adjacent to each other. The chopper circuit adds original gray-scale data of the first sub-pixel with a first value to serve as new gray-scale data of the first sub-pixel and deducts original gray-scale data of the second sub-pixel by a second value to serve as new gray-scale data of the second sub-pixel. The source driver circuit generates a first driving voltage for the first sub-pixel according to the new gray-scale data of the first sub-pixel and generates a second driving voltage for the second sub-pixel according to the new gray-scale data of the second sub-pixel.