公开(公告)号：US20210027736A1

公开(公告)日：2021-01-28

申请号：US17036627

申请日：2020-09-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： In-Suk KIM ,  Chan Bong YU

IPC: G09G3/36

Abstract: A gamma adjustment circuit includes: a first node; a second node; a first decoder to which a first voltage signal and a second voltage signal are provided and which outputs either one of the first voltage signal and the second voltage signal as a third voltage signal; an amplifier receiving the third voltage signal as a positive input and outputting a fourth voltage signal; a second decoder receiving the fourth voltage signal and outputting the provided fourth voltage signal as a fifth voltage signal to one of the first and second nodes; a third decoder connected to the first and second nodes, receives the fifth voltage signal from one of the first and second nodes, and outputs the fifth voltage signal to a negative input terminal of the amplifier as a sixth voltage signal; and a first resistor connected between the first node and the second node.

公开(公告)号：US20190295490A1

公开(公告)日：2019-09-26

申请号：US16207336

申请日：2018-12-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： In-Suk KIM ,  Chan Bong YU

IPC: G09G3/36

Abstract: A gamma adjustment circuit is provided. The gamma adjustment circuit includes: a first node; a second node different from the first node; a first decoder to which a first voltage signal and a second voltage signal are provided and which outputs either one of the first voltage signal and the second voltage signal as a third voltage signal; an amplifier which receives the third voltage signal as a positive input and outputs a fourth voltage signal; a second decoder which receives the fourth voltage signal and outputs the provided fourth voltage signal as a fifth voltage signal to one of the first and second nodes; a third decoder which is connected to the first and second nodes, receives the fifth voltage signal from one of the first and second nodes, and outputs the fifth voltage signal to a negative input terminal of the amplifier as a sixth voltage signal; and a first resistor connected between the first node and the second node.