公开(公告)号：US11532279B2

公开(公告)日：2022-12-20

申请号：US17190962

申请日：2021-03-03

Applicant: Samsung Display Co., Ltd.

Inventor： Sangan Kwon ,  Hyojin Lee ,  Jinyoung Roh ,  Sehyuk Park

IPC: G09G5/10 ,  G09G3/3275 ,  G09G3/3258 ,  G09G3/3233 ,  G09G3/20

Abstract: An OLED display device includes display panel and a panel driver. The panel driver receives input image data at an input frame frequency and determines whether the input image data represent a still image. When the input image data do not represent the still image, the panel driver drives the display panel at a first output frame frequency substantially equal to the input frame frequency. When the input image data represent the still image, the panel driver drives the display panel at a second output frame frequency lower than the input frame frequency for a low frequency driving time and drives the display panel at a third output frame frequency higher than the second output frame frequency for a high frequency insertion time determined by one of a panel characteristic of the display panel and a representative gray level of the input image data, after the low frequency driving time.

公开(公告)号：US11264446B2

公开(公告)日：2022-03-01

申请号：US16843637

申请日：2020-04-08

Applicant: Samsung Display Co., Ltd.

Inventor： Hyo Jin Lee ,  Jinyoung Roh ,  Sehyuk Park ,  Sangan Kwon ,  Hui Nam

IPC: G09G3/3291 ,  G09G5/18 ,  G06F3/041 ,  G06F1/3234 ,  G09G3/36 ,  H01L27/32 ,  G09G3/20

Abstract: A display apparatus includes: a display panel configured to display an image based on input image data; a gate driver configured to output a gate signal to the display panel; a data driver configured to output a data voltage to the display panel; a driving controller configured to control an operation of the gate driver and an operation of the data driver, to determine a normal driving mode and a low frequency driving mode based on the input image data, and to determine a driving frequency of the display panel based on the input image data; and a touch driver configured to detect a touch event occurring on the display panel, and to output a touch interrupt signal representing the touch event to the driving controller.

公开(公告)号：US11170694B2

公开(公告)日：2021-11-09

申请号：US16943170

申请日：2020-07-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyo Jin Lee ,  Jae Keun Lim ,  Hong Soo Kim ,  Jinyoung Roh ,  Sehyuk Park

IPC: G09G3/20

Abstract: A display apparatus including: a display panel configured to display an image based on input image data; a data driver configured to output a data voltage to the display panel; and a driving controller configured to determine a driving frequency of the display panel based on flicker values for grayscale values of the input image data and output a driving frequency signal representing the driving frequency of the display panel to a host.

公开(公告)号：US11107422B2

公开(公告)日：2021-08-31

申请号：US16800122

申请日：2020-02-25

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyo Jin Lee ,  Sangan Kwon ,  Hui Nam ,  Jinyoung Roh ,  Sehyuk Park

IPC: G09G3/30 ,  G09G3/3291

Abstract: A display device includes a display panel including a plurality of pixels and a display panel driver configured to drive the display panel. Here, the display panel driver is configured to receive input image data, to drive the display panel at a first driving frequency when the input image data corresponds to a moving image, and to select one of a plurality of flicker lookup tables based on the first driving frequency and drive the display panel at a second driving frequency based on the flicker lookup table when the input image data corresponds to a still image.

公开(公告)号：US11094258B2

公开(公告)日：2021-08-17

申请号：US16932031

申请日：2020-07-17

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Joon-Chul Goh ,  Sangan Kwon ,  Jinyoung Roh ,  Hyojin Lee

IPC: G09G3/325 ,  G09G3/3275

Abstract: A pixel circuit includes: a main circuit including: a driving transistor that includes a gate terminal connected to a first node, a first terminal connected to a second node, and a second terminal connected to a third node; and an organic light-emitting element connected to the driving transistor and configured to control the organic light-emitting element by controlling a driving current corresponding to a data signal applied via a data line to flow into the organic light-emitting element; and a sub circuit including: a first compensation transistor that includes a gate terminal configured to receive a first gate signal, a first terminal connected to the first node, and a second terminal connected to a fourth node; and a second compensation transistor that includes a gate terminal configured to receive a second gate signal, a first terminal connected to the fourth node, and a second terminal connected to the third node.

公开(公告)号：US12165599B2

公开(公告)日：2024-12-10

申请号：US18407362

申请日：2024-01-08

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Hongsoo Kim ,  Jinyoung Roh ,  Bonghyun You ,  Hyojin Lee ,  Jaekeun Lim

IPC: G09G3/3266 ,  G09G3/3275

Abstract: A display apparatus includes a display panel, a gate driver, a data driver, a driving controller and a power voltage generator. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line. The data driver outputs a data voltage to a data line. The driving controller drives display areas of the display panel in different driving frequencies. The power voltage generator outputs a data power voltage to the data driver. The driving controller outputs an output data enable signal including a writing period having an active signal and a holding period having an inactive signal for the respective display areas. The power voltage generator generates the data power voltage having a high power voltage level during the writing period and a low power voltage level in at least a portion of the holding period.

公开(公告)号：US11887523B2

公开(公告)日：2024-01-30

申请号：US16844887

申请日：2020-04-09

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/20 ,  G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/2007 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2320/0247

Abstract: A display apparatus includes: a display panel configured to display an image based on input image data; a gate driver configured to output a gate signal to the display panel; a data driver configured to output a data voltage to the display panel; and a driving controller configured to control an operation of the gate driver and an operation of the data driver, to determine a driving mode of the display apparatus to one of a normal driving mode and a low frequency driving mode based on the input image data, and to determine a driving frequency of the display panel based on the input image data, wherein the driving controller is configured to determine the driving frequency of the display panel using a flicker value varied according to a grayscale value of the input image data and a luminance setting value.

公开(公告)号：US11749211B2

公开(公告)日：2023-09-05

申请号：US17935562

申请日：2022-09-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sehyuk Park ,  Hyojin Lee ,  Hui Nam ,  Jinyoung Roh ,  Bong Hyun You ,  Eunho Lee

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2330/028 ,  G09G2370/08

Abstract: A display device includes: a display panel including a plurality of pixels; and a driving controller configured to: generate a data signal corresponding to an input image data; generate a data voltage based on the data signal; and output the data voltage to the pixels, wherein the driving controller is configured to output the data signal in at least one driving frequency higher than a predetermined low frequency during an image transition period in a low frequency driving mode during which the data signal outputs in the low frequency.

公开(公告)号：US11620952B2

公开(公告)日：2023-04-04

申请号：US17587325

申请日：2022-01-28

Applicant: Samsung Display Co., Ltd.

Inventor： HongSoo Kim ,  Sangan Kwon ,  Jinyoung Roh ,  Sehyuk Park ,  Sukhun Lee ,  Hyojin Lee

IPC: G09G3/3266 ,  G09G3/3275

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line of the display panel. The data driver outputs a data voltage to a data line of the display panel. The driving controller controls operations of the gate driver and the data driver and drive a still image display area and a video image display area of a display area of the display panel in different driving frequencies. The driving controller includes a still image determiner which divides the input image data into a plurality of still image determining blocks, respectively determines whether the still image determining blocks represent a still image or a video image and determines a boundary between the still image display area and the video image display area.

公开(公告)号：US11615749B2

公开(公告)日：2023-03-28

申请号：US17379929

申请日：2021-07-19

Applicant: Samsung Display Co., Ltd.

Inventor： Hui Nam ,  Hyo Jin Lee ,  Jinyoung Roh ,  Sehyuk Park

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

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and an emission driver. The display panel includes a pixel. The gate driver outputs a data write gate signal having a corresponding active level and a data initialization gate signal having a corresponding active level to the pixel in a writing frame, outputs the data write gate signal not having the corresponding active level and the data initialization gate signal not having the corresponding active level to the pixel in a holding frame and outputs the data write gate signal having the corresponding active level and the data initialization gate signal not having the corresponding active level to the pixel in a writing compensation frame. The data driver outputs a data voltage to the pixel. The emission driver outputs an emission signal to the pixel.