公开(公告)号：US11205368B2

公开(公告)日：2021-12-21

申请号：US17008409

申请日：2020-08-31

Applicant: Samsung Display Co., Ltd.

Inventor： Jong Man Kim ,  Sang Su Han ,  Da Eun Kang ,  Jae Woo Ryu

IPC: G09G3/20

Abstract: A display device and a method of driving the same are described. The display device includes: an over driver to overdrive current frame data included in input image data to output overdriving frame data; a data driver to generate a data signal for the current frame data based on the overdriving frame data; and a display panel including a plurality of pixels to receive the data signal, the over driver may calculate a temporal change rate or a spatial change rate of the input image data, and output the overdriving frame data utilizing a reference formula having a first main parameter determined according to the calculated result. Therefore, overdriving may be performed dynamically according to the spatial change rate or the temporal change rate of the input image data.

公开(公告)号：US11158265B2

公开(公告)日：2021-10-26

申请号：US17115034

申请日：2020-12-08

Applicant: Samsung Display Co., Ltd.

Inventor： Hae Kwan Seo ,  Jae Woo Ryu ,  Myung Ho Lee

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

Abstract: In a scan driver and a display device including the same, a first input terminal of a stage receives a scan start signal or an output signal of a previous stage when a first control signal is supplied, a second input terminal of the stage receives one of two clock signals, a third input terminal of the stage receives the other of the two clock signals, and a fourth input terminal of the stage receives a scan start signal or an output signal of a next stage when a second control signal is supplied, and a first power source is outputted from an output terminal of the stage when a first clock signal and a second clock signal are low levels.

公开(公告)号：US11893927B2

公开(公告)日：2024-02-06

申请号：US18151142

申请日：2023-01-06

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek Kim ,  Kyun Ho Kim ,  Jae Woo Ryu ,  Joon Suk Baik ,  Se Keun Lee ,  Sang Su Han

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247

Abstract: A display device includes a processor which supplies grayscale data in active periods of frame periods and stops supply of the grayscale data in blank periods of the frame periods, a timing controller which generates a change signal when a difference between a first blank period of a first frame period and a second blank period of a second frame period is greater than a threshold value, a power supply which supplies a first power voltage having a voltage level changed based on the change signal to a first power line, and pixels commonly connected to the first power line.

公开(公告)号：US11574574B2

公开(公告)日：2023-02-07

申请号：US17220087

申请日：2021-04-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek Kim ,  Kyun Ho Kim ,  Jae Woo Ryu ,  Joon Suk Baik ,  Se Keun Lee ,  Sang Su Han

IPC: G09G3/20

Abstract: A display device includes a processor which supplies grayscale data in active periods of frame periods and stops supply of the grayscale data in blank periods of the frame periods, a timing controller which generates a change signal when a difference between a first blank period of a first frame period and a second blank period of a second frame period is greater than a threshold value, a power supply which supplies a first power voltage having a voltage level changed based on the change signal to a first power line, and pixels commonly connected to the first power line.

公开(公告)号：US11349392B2

公开(公告)日：2022-05-31

申请号：US16871157

申请日：2020-05-11

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho Kim ,  Jung-taek Kim ,  Joon Suk Baik ,  Sang Su Han ,  Jae Woo Ryu ,  Myung Ho Lee

IPC: H02M3/156 ,  H03F3/14

Abstract: A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.

公开(公告)号：US10950207B2

公开(公告)日：2021-03-16

申请号：US16508721

申请日：2019-07-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se Keun Lee ,  Jae Woo Ryu

IPC: G09G5/38 ,  G09G3/20 ,  G09G5/373

Abstract: A display device according to an exemplary embodiment includes a display panel that includes a plurality of pixels, and an image shifter that corrects an image corresponding to input image data to be shifted based on age data with respect to the plurality of pixels and an input grayscale of input image data and outputs corrected image data, wherein a shift range of the image is reduced when an age value of the age data exceeds a threshold value.

公开(公告)号：US12165558B2

公开(公告)日：2024-12-10

申请号：US18358428

申请日：2023-07-25

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek Kim ,  Jae Woo Ryu ,  Joon Suk Baik ,  Se Keun Lee

IPC: G09G5/00 ,  G09G3/20

Abstract: A display device includes a plurality of pixels, a power supply, a voltmeter, and a timing controller. The power supply is configured to generate an initialization voltage to be supplied to a sensing pixel among the pixels. The voltmeter is configured to measure a first value of the initialization voltage supplied to the sensing pixel during an active period of a frame period and a second value of the initialization voltage supplied to the sensing pixel during a vertical blank period of the frame period. The timing controller is configured to generate rewrite image data that is supplied to the sensing pixel during the vertical blank period. The rewrite image data is generated from image data applied to the pixels during the active period and a difference between the first and second values.

公开(公告)号：US11984057B2

公开(公告)日：2024-05-14

申请号：US17814129

申请日：2022-07-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seungyoung Choi ,  Seongjun Kim ,  Jae Woo Ryu ,  Youngsoo Sohn ,  Kwan-Young Oh

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3208 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/36

CPC classification number: G09G3/2092 ,  G09G3/32 ,  G09G3/20 ,  G09G3/3208 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3607 ,  G09G2310/0218 ,  G09G2310/0248 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/061 ,  G09G2310/062 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0261 ,  G09G2320/0626 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2340/16

Abstract: A display device includes a display panel, controller configured to generate a second data enable signal and second image data based on a first data enable signal and first image data, and generate an output data enable signal and output image data by performing a black data insertion operation, and data driver configured to provide data signals based on the output data enable signal and the output image data, where the controller obtains a delay time between the first data enable signal and the second data enable signal or the first image data and the second image data, determines a number of subsequent pulses of the output data enable signal during a period from one time point within a frame period to an end time point of the frame period, and adjusts a cycle of the subsequent pulses based on the delay time and the number of the subsequent pulses.

公开(公告)号：US11862102B2

公开(公告)日：2024-01-02

申请号：US17883869

申请日：2022-08-09

Applicant: Samsung Display Co., Ltd.

Inventor： Jung-Taek Kim ,  Byeong-Doo Kang ,  Jae Woo Ryu ,  Joonsuk Baik ,  Sekeun Lee

IPC: G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3266 ,  G09G3/3275 ,  G09G2300/0842 ,  G09G2310/0278 ,  G09G2310/0294 ,  G09G2310/061

Abstract: In a display device, each of pixels includes a light emitting element and a pixel circuit which is connected to the light emitting element at a first node and drives the light emitting element in response to a corresponding driving scan signal among driving scan signals during a display period. The pixel circuit is connected to a corresponding readout line among readout lines at a second node. The sensing circuit senses a potential of the first node through the corresponding readout line during a blank period, and each of frames includes the display period and the blank period. At least two driving scan signals among the driving scan signals respectively include a plurality of rewriting periods, each of which is activated during the blank period corresponding thereto, and the rewriting periods of the driving scan signals have different durations from each other.

公开(公告)号：US11741878B2

公开(公告)日：2023-08-29

申请号：US17485771

申请日：2021-09-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek Kim ,  Jae Woo Ryu ,  Joon Suk Baik ,  Se Keun Lee

IPC: G09G5/00 ,  G09G3/20

CPC classification number: G09G3/2007 ,  G09G2300/0809 ,  G09G2310/027 ,  G09G2310/0267 ,  G09G2310/08 ,  G09G2320/043 ,  G09G2330/021

Abstract: A display device includes a plurality of pixels, a power supply, a voltmeter, and a timing controller. The power supply is configured to generate an initialization voltage to be supplied to a sensing pixel among the pixels. The voltmeter is configured to measure a first value of the initialization voltage supplied to the sensing pixel during an active period of a frame period and a second value of the initialization voltage supplied to the sensing pixel during a vertical blank period of the frame period. The timing controller is configured to generate rewrite image data that is supplied to the sensing pixel during the vertical blank period. The rewrite image data is generated from image data applied to the pixels during the active period and a difference between the first and second values.