公开(公告)号：US20210020113A1

公开(公告)日：2021-01-21

申请号：US16920322

申请日：2020-07-02

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk PARK ,  Sangan KWON ,  HongSoo KIM ,  Jinyoung ROH ,  Hyo Jin LEE

IPC: G09G3/3291

Abstract: A method of driving a display panel includes dividing an input image into a plurality of segments, generating a flicker value of a segment of the plurality of segments, determining whether to compensate the flicker value of the segment or not according to a segment size, compensating the flicker value of the segment based on the segment size, determining a frame rate of the display panel based on the flicker value of the segment and outputting a data voltage to the display panel in the frame rate. The flicker value of the segment is compensated based on the flicker value of the segment and flicker values of segments that are adjacent to the segment.

公开(公告)号：US20200349879A1

公开(公告)日：2020-11-05

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 ,  G09G3/3275 ,  G09G3/3266

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：US20190172381A1

公开(公告)日：2019-06-06

申请号：US16027798

申请日：2018-07-05

Applicant: Samsung Display Co., Ltd.

Inventor： Hongsoo KIM ,  Sehyuk PARK

IPC: G09G3/20 ,  G09G3/34 ,  G09G3/3208

Abstract: A method of driving a display panel including a plurality of pixels, each of which outputs different color lights corresponding to voltage ranges to which a driving voltage applied thereto belongs, includes dividing one image frame into first through third sub-frames, outputting a first color image displayed by a first color by applying a first driving voltage belonging to a first voltage range to the pixels in the first sub-frame, outputting a second color image displayed by a second color by applying a second driving voltage belonging to a second voltage range to the pixels in the second sub-frame, and outputting a third color image displayed by a third color by applying a third driving voltage belonging to a third voltage range to the pixels in the third sub-frame.

公开(公告)号：US20160284287A1

公开(公告)日：2016-09-29

申请号：US15050190

申请日：2016-02-22

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehyun CHO ,  Hongsoo KIM ,  Bon-seog GU ,  Sehyuk PARK ,  Cheolwoo PARK ,  Ahyoung SON

IPC: G09G3/36 ,  G09G3/34

CPC classification number: G09G3/3607 ,  G09G3/2003 ,  G09G3/3413 ,  G09G3/3426 ,  G09G2320/0242 ,  G09G2320/0261 ,  G09G2320/062 ,  G09G2360/16

Abstract: A display apparatus comprises a display panel comprising a plurality of dimming areas, a light source unit configured to supply light to the display panel, a timing controller configured to receive a control signal and input data and to generate a gate control signal, a data control signal, and a light source control signal, a display panel driving unit configured to drive the display panel based on the gate and data control signals, and a light source driving unit configured to drive the light source unit based on the light source control signal, wherein based on the input data, the timing controller is configured to determine a first color of at least any one dimming area among the dimming areas and a second color in a complementary color relationship to the first color and to supply information on the first and second colors to the light source driving unit.

Abstract translation: 显示装置包括：显示面板，包括多个调光区域;光源单元，被配置为向显示面板提供光;定时控制器，被配置为接收控制信号和输入数据并产生门控制信号，数据控制 信号和光源控制信号;显示面板驱动单元，被配置为基于所述栅极和数据控制信号驱动所述显示面板;以及光源驱动单元，被配置为基于所述光源控制信号驱动所述光源单元， 其中，基于所述输入数据，所述定时控制器被配置为确定所述调光区域中的至少任一个调光区域的第一颜色和与所述第一颜色的互补色关系的第二颜色，并且提供关于所述第一和第二颜色的信息 颜色到光源驱动单元。

公开(公告)号：US20240312381A1

公开(公告)日：2024-09-19

申请号：US18674165

申请日：2024-05-24

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：US20240135888A1

公开(公告)日：2024-04-25

申请号：US18402167

申请日：2024-01-02

Applicant: Samsung Display Co., LTD.

Inventor： Sehyuk PARK ,  Hyo-Jin LEE

IPC: G09G3/3291 ,  H10K59/121

CPC classification number: G09G3/3291 ,  H10K59/1213 ,  H10K59/1216 ,  G09G2310/0272

Abstract: A display device includes a display panel including a pixel including switching elements of a first type and a second type different from the first type, a gate driver for generating a gate signal based on a gate clock signal and providing the gate signal to the display panel, a data driver for providing data voltage to the display panel, an emission controller for providing an emission controlling signal to the display panel, and a driving controller for generating control signals for controlling the gate and data drivers, and the emission controller. In a low-frequency driving mode, the display panel operates in a writing frame for writing data in the pixel and in a holding frame for holding the data written in the pixel, and the driving controller provides the gate driver with a gate clock signal having a direct current (DC) voltage during the holding frame.

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：US20210248960A1

公开(公告)日：2021-08-12

申请号：US16973459

申请日：2019-05-31

Applicant: Samsung Display Co., Ltd.

Inventor： Hyo-Jin LEE ,  Sehyuk PARK

IPC: G09G3/3258 ,  G09G3/3275

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and an emission driver. The display panel includes a pixel comprising a switching element of a first type and a switching element of a second type different from the first type. The gate driver is configured to generate a gate signal based on a vertical start signal and a gate clock signal and output the gate signal to the display panel. The data driver is configured to output a data voltage to the display panel. The emission driver is configured to output an emission to the display panel. A driving frequency of the display panel is varied according to an input image. The gate clock signal has an active duration having a varied length according to the driving frequency.

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.