公开(公告)号：US11942043B2

公开(公告)日：2024-03-26

申请号：US17991197

申请日：2022-11-21

Applicant: Samsung Display Co., Ltd.

Inventor： Changnoh Yoon ,  Soon-Dong Kim ,  Sangan Kwon ,  Seungjae Lee ,  Junheyung Jung

IPC: G09G3/3275 ,  G09G3/3266

CPC classification number: G09G3/3275 ,  G09G3/3266 ,  G09G2310/0278

Abstract: Provided is a display device. The display device includes a display panel including a plurality of pixels respectively connected to a plurality of data lines and a plurality of scan lines, a data driving circuit configured to drive the plurality of data lines, a scan driving circuit configured to drive the plurality of scan lines, and a driving controller configured to divide the display panel into a first display region and a second display region during a multi-frequency mode, and control the data driving circuit and the scan driving circuit so as to drive the first display region at a first driving frequency and drive the second display region at a second driving frequency lower than the first driving frequency, wherein, during the multi-frequency mode, the driving controller sets a frequency for each of horizontal lines in a boundary region, which is adjacent to the first display region, in the second display region to a third driving frequency between the first driving frequency and the second driving frequency.

公开(公告)号：US11929020B2

公开(公告)日：2024-03-12

申请号：US18084559

申请日：2022-12-20

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/3208 ,  G09G3/3233 ,  G09G5/10

CPC classification number: G09G3/3208 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0245 ,  G09G2310/0262 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/0686 ,  G09G2330/028 ,  G09G2360/16

Abstract: A display device includes a display panel, a power supply unit, a voltage adjustment signal provider, and a data adjustment signal provider. The display panel includes a first display area and a second display area. The power supply unit is configured to provide a first initialization voltage and a second initialization voltage to the display panel. The voltage adjustment signal provider is configured to provide an adjustment signal to the power supply unit for applying an adjustment voltage to the second initialization voltage when the second display area is driven at a frequency lower than at least one of a predetermined frequency and a driving frequency of the first area. The data adjustment signal provider is configured to provide a data adjustment signal for adjusting gray levels of some pixels included in the first display area when the adjustment voltage is applied to the second initialization voltage.

公开(公告)号：US11869400B2

公开(公告)日：2024-01-09

申请号：US17566385

申请日：2021-12-30

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2310/0267 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2340/0435

Abstract: A display apparatus is disclosed that comprises a display panel. The display panel includes a display region that includes a first display area and a second display area. A data driver is configured to provide a data voltage to the display region. A gate driver is configured to provide a compensation gate signal and an initialization gate signal to the display region. The gate driver includes a first stage and a second stage. A driving controller is configured to control the gate driver and the data driver. The driving controller is configured to determine a first driving frequency for the first display area and a second driving frequency for the second display area. The second stage is configured to provide the compensation gate signal having a pulse duration shorter than a pulse duration of the compensation gate signal provided to the display region by the first stage.

公开(公告)号：US11488542B2

公开(公告)日：2022-11-01

申请号：US17099690

申请日：2020-11-16

Applicant: Samsung Display Co., Ltd.

Inventor： Changnoh Yoon ,  Jin-Wook Yang

IPC: G09G3/3291 ,  G09G3/3233 ,  H01L27/32

Abstract: An organic light emitting display device includes: a display panel including a plurality of pixel rows each including first pixel groups alternating with second pixel groups; a gate driver configured to provide a first group gate signal to the first pixel groups, and to provide a second group gate signal to the second pixel groups; a data driver configured to output data voltages to a plurality of output line groups; and a connection controller configured to connect the output line groups to a first data line group in response to a first connection control signal, and to connect the output line groups to a second data line group in response to a second connection control signal.

公开(公告)号：US11004400B2

公开(公告)日：2021-05-11

申请号：US16746297

申请日：2020-01-17

Applicant: Samsung Display Co., Ltd.

Inventor： Changnoh Yoon ,  Soon-Dong Kim ,  Jin-Wook Yang

IPC: G09G3/3275 ,  G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a gray group data generator configured to receive current line data for pixels in a current row, and to generate current row gray group data based on the current line data, a horizontal crosstalk determiner configured to determine whether horizontal crosstalk occurs in the current row, a horizontal crosstalk compensator configured to compare the current row gray group data with adjacent row gray group data when the horizontal crosstalk is determined to occur in the current row, and to selectively adjust a plurality of gamma reference voltages according to a result of the comparison between the current row gray group data and the adjacent row gray group data, and a data driver configured to generate and provide data voltages corresponding to the current line data based on the selectively adjusted plurality of gamma reference voltages.

公开(公告)号：US11862073B2

公开(公告)日：2024-01-02

申请号：US17973983

申请日：2022-10-26

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0278 ,  G09G2320/0247 ,  G09G2330/021

Abstract: A display device includes a driving controller which outputs the output image signal corresponding to the input image signal when the first display area is driven, outputs the output image signal corresponding to a first bias signal when the boundary area is driven, and outputs the output image signal corresponding to a second bias signal different from the first bias signal when the non-boundary area is driven.

公开(公告)号：US11508313B2

公开(公告)日：2022-11-22

申请号：US17326570

申请日：2021-05-21

Applicant: Samsung Display Co., Ltd.

Inventor： Changnoh Yoon ,  Soon-Dong Kim ,  Sangan Kwon ,  Seungjae Lee ,  Junheyung Jung

IPC: G09G3/3275 ,  G09G3/3266

Abstract: A display device includes a display panel including pixels connected to data lines and scan lines, a data driving circuit which drives the data lines, a scan driving circuit which drives the scan lines, and a driving controller divides the display panel into first and second display regions, controls the data driving circuit and the scan driving circuit to drive the first display region at a first driving frequency and to drive the second display region at a second driving frequency lower than the first driving frequency, and sets third driving frequencies respectively corresponding to horizontal lines in a boundary region, which is defined by a portion of the second display region adjacent to the first display region, during a multi-frequency mode. Each of the third driving frequencies has a frequency level between the first driving frequency and the second driving frequency.

公开(公告)号：US11495181B2

公开(公告)日：2022-11-08

申请号：US17317071

申请日：2021-05-11

Applicant: Samsung Display Co., Ltd.

Inventor： Soon-Dong Kim ,  Sangan Kwon ,  Changnoh Yoon ,  Seungjae Lee

IPC: G09G3/3291 ,  G09G3/3266

Abstract: The display device includes a display panel in which a first display area and a second display area adjacent to the first display area are defined, a data driving circuit which drives the plurality of data lines, a scan driving circuit which drives the plurality of scan lines, and a driving controller which receives an image signal and a control signal, and controls the data driving circuit and the scan driving circuit based on an operation mode, where the driving controller includes a luminance deviation compensation unit which compensates for luminance deviation of the first display area and the second display area when the operation mode is a multi-frequency mode in which the first display area is driven at a first frequency and the second display area is driven at a second frequency different from the first frequency.

公开(公告)号：US11423843B2

公开(公告)日：2022-08-23

申请号：US17342585

申请日：2021-06-09

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

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.

公开(公告)号：US11367400B2

公开(公告)日：2022-06-21

申请号：US17217373

申请日：2021-03-30

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/3266 ,  G09G3/3275 ,  G09G3/3233

Abstract: A display device includes a display panel including a first image unit and a second image unit, a data driver which applies data voltages to the display panel, a first scan driver which applies write scan signals to the display panel, a second scan driver which applies compensation scan signals and initialization scan signals to the display panel, and a masking part connected to the second scan driver and which selectively applies the initialization scan signals to the second image unit.