公开(公告)号：US12148394B2

公开(公告)日：2024-11-19

申请号：US18310334

申请日：2023-05-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Taek Su Kwon

IPC: G09G3/3275

Abstract: Among the implementations described herein is a gamma voltage generator which includes a first resistor string that is connected between a 0-th terminal and a first terminal and outputs first gamma voltages, a 0-th gamma amplifier that outputs a 0-th tap voltage to the 0-th terminal by using a 0-th reference voltage, a first variable tap gamma amplifier that outputs a first tap voltage to the first terminal by using a first reference voltage, and a gamma control logic circuit that selectively activates a first tap change signal based on a first grayscale ratio of first line data. The first variable tap gamma amplifier outputs a second tap voltage to a first central terminal of the first resistor string by using a second reference voltage, in response to the first tap change signal thus activated.

公开(公告)号：US12087195B2

公开(公告)日：2024-09-10

申请号：US17679436

申请日：2022-02-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Taek Su Kwon ,  Woojoo Kim ,  Dongwook Suh

IPC: G09G3/3275 ,  G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2320/0252

Abstract: Disclosed is a source amplifier which includes a first circuit that outputs a first current to an output terminal of the source amplifier by amplifying an input voltage, and a second circuit that is connected with the first circuit and outputs a second current to the output terminal based on the input voltage. The second circuit includes a third circuit that adjusts a level of the second current in response to an enable signal.

公开(公告)号：US20250095541A1

公开(公告)日：2025-03-20

申请号：US18823278

申请日：2024-09-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Taek Su Kwon ,  In-Suk Kim ,  Dongwook Suh

IPC: G09G3/20 ,  G11C19/28

Abstract: The present disclosure relates to a display driver integrated circuit and a display device. An example of the display driver integrated circuit includes a source driver and a timing controller. The source driver is configured to output a data voltage based on an image data to a first source line and a second source line. The timing controller is configured to receive first data and second data sequentially input to a first source channel that corresponds to the first source line, receive third data and fourth data sequentially input to a second source channel that corresponds to the second source line, perform an operation on the first data and the second data to generate a first change value, perform an operation on the third data and the fourth data to generate a second change value, and based on the first change value and the second change value, determine whether to toggle an output enable signal on an output of the second data in the first source line and an output of the fourth data in the second source line.

公开(公告)号：US20240005877A1

公开(公告)日：2024-01-04

申请号：US18310334

申请日：2023-05-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Taek Su Kwon

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2330/028 ,  G09G2320/0673 ,  G09G2320/0276 ,  G09G2310/027

Abstract: Among the implementations described herein is a gamma voltage generator which includes a first resistor string that is connected between a 0-th terminal and a first terminal and outputs first gamma voltages, a 0-th gamma amplifier that outputs a 0-th tap voltage to the 0-th terminal by using a 0-th reference voltage, a first variable tap gamma amplifier that outputs a first tap voltage to the first terminal by using a first reference voltage, and a gamma control logic circuit that selectively activates a first tap change signal based on a first grayscale ratio of first line data. The first variable tap gamma amplifier outputs a second tap voltage to a first central terminal of the first resistor string by using a second reference voltage, in response to the first tap change signal thus activated.