公开(公告)号：US10650772B2

公开(公告)日：2020-05-12

申请号：US16166915

申请日：2018-10-22

Applicant: Samsung Display Co., Ltd.

Inventor： Sangan Kwon ,  Junpyo Lee ,  Kyunho Kim ,  Sungjin Kim ,  Yong-jin Shin ,  Neung-beom Lee ,  Kyung-hwa Lim ,  Myungbo Sim ,  Jinhyuk Jang

IPC: G09G3/36 ,  G02F1/1335

Abstract: A display device includes: a display panel comprising a display area configured to display an image, wherein the display area includes a measurement area including a plurality of sub-measurement areas, and each of the plurality of sub-measurement areas includes a plurality of pre-map areas; a data driver configured to provide data voltages to the display panel; a signal controller; and a common voltage generator configured to provide a common voltage to the display panel, wherein an afterimage reduction mode is driven to change a level of the common voltage provided by the common voltage generator when the determined pre-map areas are adjacent to each other.

公开(公告)号：US12217665B2

公开(公告)日：2025-02-04

申请号：US17719797

申请日：2022-04-13

Applicant: Samsung Display Co., Ltd.

Inventor： Sangan Kwon ,  Soon-Dong Kim ,  Taehoon Kim ,  Eun Sil Yun ,  Changnoh Yoon

IPC: G09G3/3208

Abstract: A display device includes: a display panel including pixels, a data driving circuit, a scan driving circuit which drives a plurality of first scan lines and a plurality of second scan lines, and a driving controller which controls the data driving circuit and the scan driving circuit to drive a first display area of the display panel at a first operating frequency and drive a second display area of the display panel at a second operating frequency lower than the first operating frequency while an operating mode is a multi-frequency mode. During the multi-frequency mode, first scan signals provided to first scan lines, which correspond to the second display area, of the plurality of first scan lines are maintained at inactive levels in predetermined frames, and second scan signals provided to the plurality of second scan lines transition to active levels at least twice in each of the predetermined frames.

公开(公告)号：US12211424B2

公开(公告)日：2025-01-28

申请号：US18418890

申请日：2024-01-22

Applicant: Samsung Display Co., LTD.

Inventor： Taehoon Kim ,  Sangan Kwon ,  Soon-Dong Kim ,  Geunjeong Park ,  Changnoh Yoon ,  Jaekeun Lim

IPC: G09G5/00 ,  G09G3/00 ,  G09G3/20 ,  G09G3/32

Abstract: A display panel driving circuit includes a scan driving circuit including a scan stage and a timing controller. The scan stage includes a first circuit connected to a first input node of receiving a first clock signal, a second circuit connected to a second input node of receiving a second clock signal, a third circuit connected to a third input node of receiving a carry signal, the first circuit, and the second circuit and connected to a first control node and a second control node, a pull-up transistor electrically connected to the first input node and an output node of outputting a scan signal and turned on/off by the first control node, and a pull-down transistor electrically connected to the output node and a low-level voltage line and turned on/off by the second control node.

公开(公告)号：US12154489B2

公开(公告)日：2024-11-26

申请号：US18234477

申请日：2023-08-16

Applicant: Samsung Display Co., Ltd.

Inventor： Taehoon Kim ,  Sangan Kwon ,  Soon-Dong Kim ,  Hui Nam ,  Eun Sil Yun ,  Changnoh Yoon

IPC: G09G3/32 ,  G09G3/20

Abstract: A display device includes a display panel, a data driver, a scan driver, and a light emitting driver. The display panel includes a first display area and a second display area. The display panel displays a first image on the first display area and the second display area in a first mode, and displays a second image on the first display area in a second mode. The light emitting driver activates emission control signals applied to the first display area and the second display area in the first mode. The light emitting driver activates emission control signals applied to the second display area during a first partial frame in the second mode, and maintains the emission control signals applied to the second display area in a deactivation state during a plurality of second partial frames in the second mode.

公开(公告)号：US12014662B2

公开(公告)日：2024-06-18

申请号：US17397000

申请日：2021-08-09

Applicant: Samsung Display Co., Ltd.

Inventor： Jinyoung Roh ,  Hongsoo Kim ,  Sangan Kwon ,  Sehyuk Park ,  Hyo Jin Lee

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/0202 ,  G09G2310/0267 ,  G09G2310/027 ,  G09G2320/0247 ,  G09G2320/10 ,  G09G2330/023

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel including a gate line and a data line displays an image based on input image data. The gate driver outputs a gate signal to the gate line. The data driver outputs a data voltage to the data line. The driving controller includes an area divider dividing the input image data into first and second area data, a first variable frequency driver determining a first driving frequency of the first area data based on a flicker value according to a grayscale value and generating a first data signal of the first driving frequency and a second variable frequency driver determining a second driving frequency of the second area data based on a flicker value according to a grayscale value and generating a second data signal of the second driving frequency.

公开(公告)号：US11955081B2

公开(公告)日：2024-04-09

申请号：US16988643

申请日：2020-08-08

Applicant: Samsung Display Co., Ltd.

Inventor： Hyo Jin Lee ,  Joon-Chul Goh ,  Sangan Kwon ,  Hong Soo Kim ,  Hui Nam ,  Jin Young Roh ,  Sehyuk Park

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2330/021

Abstract: A pixel includes: a storage capacitor connected between a first power supply voltage and a gate node; a first transistor including a gate electrode connected to the gate node; a second transistor to transfer a data signal to a source of the first transistor in response to a scan signal; a third transistor to diode-connect the first transistor in response to the scan signal, and including first and second sub-transistors serially connected between the gate node and a drain of the first transistor; a fourth transistor to transfer an initialization voltage to the gate node in response to an initialization signal, and including third and fourth sub-transistors serially connected between the gate node and the initialization voltage; and an organic light emitting diode including a cathode connected to a second power supply voltage. At least one of the second and fourth sub-transistors includes a bottom electrode.

公开(公告)号：US11928998B2

公开(公告)日：2024-03-12

申请号：US18108838

申请日：2023-02-13

Applicant: Samsung Display Co., Ltd.

Inventor： Sangan Kwon ,  Soon-Dong Kim ,  Taehoon Kim ,  Hui Nam ,  Eun Sil Yun ,  Changnoh Yoon

IPC: G09G3/00 ,  G09G3/3233 ,  G09G3/3291

CPC classification number: G09G3/035 ,  G09G3/3233 ,  G09G3/3291 ,  G09G2310/027 ,  G09G2380/02

Abstract: A display device includes a display panel including a first partial panel region and a second partial panel region, and a panel driver which drives the display panel. The panel driver determines a first driving frequency for the first partial panel region and a second driving frequency for the second partial panel region. In a case where the first driving frequency and the second driving frequency are different from each other, the panel driver sets a boundary portion including a boundary between the first partial panel region and the second partial panel region, and determines a third driving frequency for the boundary portion to be between the first driving frequency and the second driving frequency.

公开(公告)号：US11915639B2

公开(公告)日：2024-02-27

申请号：US18108626

申请日：2023-02-12

Applicant: Samsung Display Co., Ltd.

Inventor： Taehoon Kim ,  Seon Young Choi ,  Sangan Kwon ,  Soon-Dong Kim ,  Jin-Wook Yang ,  Changnoh Yoon

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0267 ,  G09G2330/021 ,  G09G2380/02

Abstract: A display panel of a display device is divided into a first display region and a second display region. The second display region includes a boundary region adjacent to the first display region and a non-boundary region opposite to the first display region with respect to the boundary region. The driving controller outputs the voltage control signal, such that the first voltage in a first high voltage level and the second voltage in a first low voltage level are generated when the first display region is driven. The driving controller outputs the voltage control signal, such that the first voltage in a second high voltage level lower than the first high voltage level and the second voltage in a second low voltage level higher than the first low voltage level are generated, when the non-boundary region of the second display region is driven.

公开(公告)号：US11854470B2

公开(公告)日：2023-12-26

申请号：US17982889

申请日：2022-11-08

Applicant: Samsung Display Co., Ltd.

Inventor： Taehoon Kim ,  Sangan Kwon ,  Soon-Dong Kim ,  Hui Nam ,  Eun Sil Yun ,  Changnoh Yoon

IPC: G09G3/32 ,  G09G3/20

CPC classification number: G09G3/32 ,  G09G3/2007 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2310/0267 ,  G09G2310/08 ,  G09G2330/021

Abstract: A display device includes a display panel, a data driver, a scan driver, and a light emitting driver. The display panel includes a first display area and a second display area. The display panel displays a first image on the first display area and the second display area in a first mode, and displays a second image on the first display area in a second mode. The light emitting driver activates emission control signals applied to the first display area and the second display area in the first mode. The light emitting driver activates emission control signals applied to the second display area during a first partial frame in the second mode, and maintains the emission control signals applied to the second display area in a deactivation state during a plurality of second partial frames in the second mode.

公开(公告)号：US11842690B2

公开(公告)日：2023-12-12

申请号：US17880734

申请日：2022-08-04

Applicant: Samsung Display Co., Ltd.

Inventor： Taehoon Kim ,  Sangan Kwon ,  Soon-Dong Kim ,  Hui Nam ,  Bonghyun You ,  Changnoh Yoon ,  Jaekeun Lim

IPC: G09G3/3266 ,  G09G3/3225

CPC classification number: G09G3/3266 ,  G09G3/3225 ,  G09G2310/0264 ,  G09G2310/08 ,  G09G2330/021

Abstract: Provided is a scan driver of a display device, and the scan driver includes a driving circuit and a masking circuit. The driving circuit includes a control circuit, a first output circuit, and a second output circuit. The control circuit outputs a first control signal and a second control signal. The first output circuit is connected to a first output terminal which outputs a first scan signal and a first voltage terminal and operates in response to a first control signal. The second output circuit is connected to a first output terminal and a second voltage terminal and operates in response to a second control signal. The masking circuit outputs a second scan signal to a second output terminal in response to the first control signal and the second control signal and is connected to an input terminal to which a masking signal is supplied.