公开(公告)号：US20210027720A1

公开(公告)日：2021-01-28

申请号：US16922906

申请日：2020-07-07

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk PARK ,  Joon-Chul GOH ,  Sangan KWON ,  HongSoo KIM ,  Hui NAM ,  Jinyoung ROH ,  Hyojin LEE

IPC: G09G3/3291 ,  G09G3/3266

Abstract: A display device includes a display panel including a first partial panel region and a second partial panel region, and a panel driver configured to drive 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. When 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：US20220157253A1

公开(公告)日：2022-05-19

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：US20210020107A1

公开(公告)日：2021-01-21

申请号：US16914163

申请日：2020-06-26

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk PARK ,  Hyojin LEE ,  Sangan KWON ,  Jinyoung ROH

IPC: G09G3/3258 ,  G09G3/3291

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 is 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 among one of a normal driving mode and a low frequency driving mode, and to determine a driving frequency of the display panel based on the input image data. The driving controller includes a flicker value storage configured to store flicker values for a part of grayscale values among all of grayscale values of the input image data.

公开(公告)号：US20190318685A1

公开(公告)日：2019-10-17

申请号：US16383436

申请日：2019-04-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sehyuk PARK ,  Hyojin LEE ,  Hui NAM

IPC: G09G3/32

Abstract: A display device is capable of improving the image quality, the display device including: a display panel; a pixel on the display panel and including at least one light emitting element; a timing controller configured to receive an image data signal of the pixel and to compensate for a gray value of the image data signal based on the number of light emitting elements of the pixel to generate a compensated image data signal; and a data driver configured to select a compensation data signal corresponding to the compensated image data signal from the timing controller and to apply the compensation data signal to the pixel.

公开(公告)号：US20220343826A1

公开(公告)日：2022-10-27

申请号：US17740290

申请日：2022-05-09

Applicant: Samsung Display Co., Ltd.

Inventor： Hyojin LEE ,  Sehyuk PARK ,  Eunho LEE ,  Jinyoung ROH ,  Hui NAM ,  Bong-Hyun YOU

IPC: G09G3/20 ,  G09G3/3225

Abstract: A driving controller of a display device, the controller including a segment divider configured to divide the image signal into a plurality of segments and define a predetermined number of adjacent segments among the plurality of segments as a segment block, an image signal adder configured to add up a gray scale value of the image signal of each of the predetermined number of adjacent segments and output the added-up gray scale values, an average gray scale calculator configured to receive the added-up gray scale values and output an average gray scale value, a correction circuit configured to output corrected added-up gray scale values obtained by adding a weight value to each of the added-up gray scale values on the basis of the average gray scale value, and a driving frequency determiner configured to determine the driving frequency of the display device on the basis of the corrected added-up gray scale values.

公开(公告)号：US20210193054A1

公开(公告)日：2021-06-24

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: 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：US20210049959A1

公开(公告)日：2021-02-18

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：US20210035505A1

公开(公告)日：2021-02-04

申请号：US16923008

申请日：2020-07-07

Applicant: Samsung Display Co., Ltd.

Inventor： Sangan KWON ,  Hyojin LEE ,  Jinyoung ROH ,  Sehyuk PARK

IPC: 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：US20230013182A1

公开(公告)日：2023-01-19

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

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：US20210295769A1

公开(公告)日：2021-09-23

申请号：US17341323

申请日：2021-06-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sehyuk PARK ,  Hyojin LEE ,  Hui NAM

IPC: G09G3/32

Abstract: A display device is capable of improving the image quality, the display device including: a display panel; a pixel on the display panel and including at least one light emitting element; a timing controller configured to receive an image data signal of the pixel and to compensate for a gray value of the image data signal based on the number of light emitting elements of the pixel to generate a compensated image data signal; and a data driver configured to select a compensation data signal corresponding to the compensated image data signal from the timing controller and to apply the compensation data signal to the pixel.