公开(公告)号：US20230142908A1

公开(公告)日：2023-05-11

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 ,  G09G2310/08 ,  G09G2310/061 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2320/0247 ,  G09G2320/0233

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：US20220294342A1

公开(公告)日：2022-09-15

申请号：US17827862

申请日：2022-05-30

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：US20220108656A1

公开(公告)日：2022-04-07

申请号：US17381134

申请日：2021-07-20

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon LEE ,  Myeong Su KIM ,  Jae Woo RYU

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

Abstract: A display device includes pixels connected to scan lines, sensing lines, readout lines, and data lines; a scan driver including stages to supply a scan signal and a sensing signal to the scan lines and the sensing lines; a data driver which supplies a data signal to the data lines; a timing controller which divides one frame into an active period including a scan period in which the data signal is supplied to the data lines and a display period in which the pixels emit light in response to the data signal, and a blank period including a sensing period in which electrical characteristics of the pixels are detected and a reset period in which the stages are reset; and a compensator which generates a compensation value for compensating for deterioration of the pixels based on sensing values provided from the readout lines during the sensing period.

公开(公告)号：US20220084450A1

公开(公告)日：2022-03-17

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：US20210264861A1

公开(公告)日：2021-08-26

申请号：US17031244

申请日：2020-09-24

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek KIM ,  Kyun Ho KIM ,  Jae Woo RYU ,  Hyung Keun PARK ,  Joon Suk BAIK ,  Sang Su HAN

IPC: G09G3/3275 ,  G09G5/00

Abstract: A display device includes a display panel. The display panel includes a display panel including a data line, a sensing line, and pixels coupled to the data line and the sensing line. A timing controller generates clock embedded data including image data and a clock training signal. A data driver recovers a clock signal, based on the clock training signal of the clock embedded data, recovers the image data of the clock embedded data, based on the clock signal, supplies a data voltage corresponding to the image data to the data line in a first section, and receives a sensing signal from a pixel of the pixels through the sensing line in a second section different from the first section. In the second section, the data driver recovers the clock signal while the sensing signal is being received.

公开(公告)号：US20210256912A1

公开(公告)日：2021-08-19

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

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：US20210201779A1

公开(公告)日：2021-07-01

申请号：US16983314

申请日：2020-08-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyun Ho KIM ,  Jung Taek KIM ,  Jae Woo RYU ,  Joon Suk BAIK ,  Yong Jin SHIN ,  Uk Jae JANG ,  Ki Hyun PYUN ,  Sang Su HAN

IPC: G09G3/3233

Abstract: A compensation method of a display device includes: sensing a first luminance of the display device when a first pattern is displayed on the display device; calculating a luminance prediction value corresponding to a second pattern to be displayed on the display device based on the first luminance, where the second pattern is different from the first pattern; sensing a second luminance of the display device when the second pattern is displayed on the display device; adjusting a current flowing in a first power line of the display device until the second luminance reaches the luminance prediction value; and storing compensation data corresponding to an adjusted current in a lookup table when the second luminance reaches the luminance prediction value.

公开(公告)号：US20230136973A1

公开(公告)日：2023-05-04

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: G09G3/20

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：US20220366858A1

公开(公告)日：2022-11-17

申请号：US17872936

申请日：2022-07-25

Applicant: Samsung Display Co., Ltd.

Inventor： Young Soo SOHN ,  Jong Man KIM ,  Bong Gyun KANG ,  Jae Woo RYU ,  Sung Mo YANG

IPC: G09G3/3291

Abstract: A display device includes a display panel, a first memory, and a degradation compensator. The first memory device stores stress data including degradation values representing a degradation degree of each of the blocks in the display panel. The degradation compensator loads the stress data from the first memory device, updates the stress data based on current input data and a maximum degradation value, updates the maximum degradation value based on degradation values included in the updated stress data, and generate compensated data by compensating for the current input data based on the updated stress data. The degradation compensator determines whether a first degradation value included in the stress data is normal by comparing the first degradation value with the maximum degradation value, and updates the first degradation value based on at least one adjacent degradation value adjacent to the first degradation value, when the first degradation value is abnormal.

公开(公告)号：US20210335282A1

公开(公告)日：2021-10-28

申请号：US17372382

申请日：2021-07-09

Applicant: Samsung Display Co., Ltd.

Inventor： Young Soo SOHN ,  Jong Man KIM ,  Bong Gyun KANG ,  Jae Woo RYU ,  Sung Mo YANG

IPC: G09G3/3291

Abstract: A display device includes a display panel, a first memory, and a degradation compensator. The first memory device stores stress data including degradation values representing a degradation degree of each of the blocks in the display panel. The degradation compensator loads the stress data from the first memory device, updates the stress data based on current input data and a maximum degradation value, updates the maximum degradation value based on degradation values included in the updated stress data, and generate compensated data by compensating for the current input data based on the updated stress data. The degradation compensator determines whether a first degradation value included in the stress data is normal by comparing the first degradation value with the maximum degradation value, and updates the first degradation value based on at least one adjacent degradation value adjacent to the first degradation value, when the first degradation value is abnormal.