公开(公告)号：US20190122630A1

公开(公告)日：2019-04-25

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：US20210233465A1

公开(公告)日：2021-07-29

申请号：US17227579

申请日：2021-04-12

Applicant: Samsung Display Co., Ltd.

Inventor： Hyo Jin LEE ,  Joon-Chul GOH ,  Sangan KWON ,  Hui NAM ,  Jin Young ROH ,  Sehyuk PARK

IPC: G09G3/325 ,  G09G3/3275

Abstract: A pixel circuit includes a main-circuit that controls an organic light-emitting element by controlling a driving current to flow into the organic light-emitting element and a sub-circuit including a first compensation transistor including a gate terminal which receives a first gate signal, a second compensation transistor including a gate terminal which receives a second gate signal, and an initialization transistor including a gate terminal which receives an initialization signal. Here, in a low-frequency driving mode, a driving frequency of the first gate signal is N hertz (Hz), a driving frequency of the initialization signal is N Hz, a driving frequency of the second gate signal is M Hz, the first compensation transistor and the initialization transistor are turned on during a first time duration in N non-light-emitting periods per second, and the second compensation transistor is turned on during a second time duration in M non-light-emitting periods per second.

公开(公告)号：US20210074217A1

公开(公告)日：2021-03-11

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 ,  G09G3/3291 ,  G09G3/3266

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：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：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：US20190244580A1

公开(公告)日：2019-08-08

申请号：US16263257

申请日：2019-01-31

Applicant: Samsung Display Co., Ltd.

Inventor： Sangan KWON ,  Junpyo LEE ,  Kyunho KIM ,  Sungjin KIM ,  Yong-Jin SHIN ,  Neung-Beom LEE ,  Kyung-Hwa LIM ,  Jinhyuk JANG

IPC: G09G3/36 ,  G02F1/1362 ,  G02F1/1368 ,  G09G3/34

CPC classification number: G09G3/3696 ,  G02F1/136213 ,  G02F1/1368 ,  G02F2201/121 ,  G02F2201/123 ,  G09G3/3406 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2320/045 ,  G09G2320/048

Abstract: A method of driving a liquid crystal display panel is provided. The liquid crystal display panel includes: a liquid crystal display pixel including a liquid crystal structure including a pixel electrode, a liquid crystal layer, and a common electrode; a switching transistor connected between the pixel electrode of the liquid crystal structure and a data-line; and a storage capacitor connected to the pixel electrode of the liquid crystal structure. The method includes: calculating an accumulated driving time of the liquid crystal display panel by accumulating a driving time of the liquid crystal display panel; determining whether or not the accumulated driving time has reached a deterioration reference time; and when the accumulated driving time is determined to have reached the deterioration reference time, changing a gate-off voltage applied to a gate terminal of the switching transistor and a common voltage applied to the common electrode.

公开(公告)号：US20190035341A1

公开(公告)日：2019-01-31

申请号：US16012000

申请日：2018-06-19

Applicant: Samsung Display Co., Ltd.

Inventor： Neung-beom LEE ,  Junpyo LEE ,  Sangan KWON ,  Kyunho KIM ,  Sungjin KIM ,  Yong-jin SHIN ,  Shimho YI ,  Kyung-hwa LIM

IPC: G09G3/36 ,  G02F1/1368 ,  G02F1/133 ,  G02F1/1362 ,  G02F1/1343

Abstract: A display apparatus includes a display panel including display blocks, where each of the display blocks includes a plurality of pixels, a gate driver which outputs gate signals to the pixels, a data driver which receives image data and outputs data voltages corresponding to the image data to the pixels, and a timing controller which converts an image signal input thereto, outputs the converted image signal to the data driver as the image data, and controls a driving timing of the gate driver and the data driver. The timing controller controls output timings of at least data voltages output to pixels of a predetermined display block among the data voltages provided to the pixels of the display blocks, depending on a color pattern of the image signal corresponding to the pixels of the predetermined display block.

公开(公告)号：US20230086572A1

公开(公告)日：2023-03-23

申请号：US17994419

申请日：2022-11-28

Applicant: Samsung Display Co., Ltd.

Inventor： Sangan KWON ,  Sonn-Dong KIM ,  Taehoon KIM ,  Hui NAM ,  Junhee MOON ,  Eun Sil YUN ,  Changnoh YOON

IPC: G09G3/3275 ,  G09G3/3266

Abstract: Provided is a display device. The display device includes a display panel that includes a first display region and a second display region, a data driving circuit configured to drive a plurality of data lines, a scan driving circuit configured to drive a plurality of scan lines, and a driving controller configured to control the data driving circuit and the scan driving circuit so as to operate the first display region and the second display region at different frequencies when an operation mode is a multi-frequency mode, wherein the driving controller changes the operation mode to a normal mode when a difference between an image signal of a current frame of the first display region and an image signal of a previous frame of the first display region is equal to or greater than a reference value during the multi-frequency mode.

公开(公告)号：US20220148524A1

公开(公告)日：2022-05-12

申请号：US17586470

申请日：2022-01-27

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.