公开(公告)号：US20210028265A1

公开(公告)日：2021-01-28

申请号：US16820867

申请日：2020-03-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyung Man KIM ,  Seok Gyu BAN ,  Sang Jae YEO

IPC: H01L27/32 ,  G09G3/3291 ,  G09G3/3266

Abstract: A method of compensating for degradation of a display device includes sensing a first sensing current flowing through a sensing line connected to a pixel, which includes a programming period for writing a data voltage of a predetermined color to a storage capacitor of the pixel, sensing a sensing voltage of the sensing line, which includes a period for charging a line capacitor connected to the sensing line, estimating a voltage of an anode electrode of an organic light emitting diode using a second sensing current estimated from the first sensing current and the sensing voltage, and determining a degradation compensation value using the voltage of the anode electrode.

公开(公告)号：US20220130942A1

公开(公告)日：2022-04-28

申请号：US17573091

申请日：2022-01-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyung Man KIM ,  Seok Gyu BAN ,  Sang Jae YEO

IPC: H01L27/32 ,  G09G3/3266 ,  G09G3/3291 ,  G09G3/3283 ,  G09G3/3258 ,  G09G3/3233 ,  G09G3/3208

Abstract: A method of compensating for degradation of a display device includes sensing a first sensing current flowing through a sensing line connected to a pixel, which includes a programming period for writing a data voltage of a predetermined color to a storage capacitor of the pixel, sensing a sensing voltage of the sensing line, which includes a period for charging a line capacitor connected to the sensing line, estimating a voltage of an anode electrode of an organic light emitting diode using a second sensing current estimated from the first sensing current and the sensing voltage, and determining a degradation compensation value using the voltage of the anode electrode.

公开(公告)号：US20210090482A1

公开(公告)日：2021-03-25

申请号：US16848763

申请日：2020-04-14

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Gyu BAN ,  Kyung Man KIM ,  Sang Jae YEO

IPC: G09G3/20

Abstract: A display device includes a data line, a pixel electrically connected to the data line, a data driver for outputting a data voltage, and a transmitter electrically connected between an output terminal of the data driver and the data line. The transmitter may transmit an instance of the data voltage to the data line in a first period. The transmitter may amplify a second instance of the data voltage to generate a reference voltage and then transmit the reference voltage to the data line in a second period different from the first period. The pixel includes a light emitting element for emitting light in response to the first instance of the data voltage. A voltage level of the reference voltage may be higher than a voltage level of the data voltage.

公开(公告)号：US20240135858A1

公开(公告)日：2024-04-25

申请号：US18319930

申请日：2023-05-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Joon Hyeok JEON ,  Byoung Kwan AN ,  Sang Myeon HAN ,  Chang Hun KIM ,  Seung Ho PARK ,  Seok Gyu BAN ,  Nam Jae LIM

IPC: G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2096 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0257 ,  G09G2320/041 ,  G09G2320/048 ,  G09G2330/08 ,  G09G2360/16

Abstract: A display device includes pixels connected to scan lines and data lines, each pixel including a driving transistor and at least one light emitting element, and a timing controller configured to generate output data using external input data. The timing controller includes a first compensator configured generate first data by correcting the external input data using at least one of optical measurement information, a threshold voltage of each of the driving transistors, mobility information, dimming information, and temperature information, and an afterimage compensator configured to generate second data based on age information of each light emitting element and the first data, generate third data based on a current amount corresponding to the first data and a current amount corresponding to the second data, and generate the age information by accumulating the third data.

公开(公告)号：US20220223088A1

公开(公告)日：2022-07-14

申请号：US17711988

申请日：2022-04-01

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Gyu BAN ,  Kyung Man KIM ,  Sang Jae YEO

IPC: G09G3/20

Abstract: A display device includes a data line, a pixel electrically connected to the data line, a data driver for outputting a data voltage, and a transmitter electrically connected between an output terminal of the data driver and the data line. The transmitter may transmit an instance of the data voltage to the data line in a first period. The transmitter may amplify a second instance of the data voltage to generate a reference voltage and then transmit the reference voltage to the data line in a second period different from the first period. The pixel includes a light emitting element for emitting light in response to the first instance of the data voltage. A voltage level of the reference voltage may be higher than a voltage level of the data voltage.

公开(公告)号：US20240233607A9

公开(公告)日：2024-07-11

申请号：US18319930

申请日：2023-05-18

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Joon Hyeok JEON ,  Byoung Kwan AN ,  Sang Myeon HAN ,  Chang Hun KIM ,  Seung Ho PARK ,  Seok Gyu BAN ,  Nam Jae LIM

IPC: G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2096 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0257 ,  G09G2320/041 ,  G09G2320/048 ,  G09G2330/08 ,  G09G2360/16

Abstract: A display device includes pixels connected to scan lines and data lines, each pixel including a driving transistor and at least one light emitting element, and a timing controller configured to generate output data using external input data. The timing controller includes a first compensator configured generate first data by correcting the external input data using at least one of optical measurement information, a threshold voltage of each of the driving transistors, mobility information, dimming information, and temperature information, and an afterimage compensator configured to generate second data based on age information of each light emitting element and the first data, generate third data based on a current amount corresponding to the first data and a current amount corresponding to the second data, and generate the age information by accumulating the third data.

公开(公告)号：US20220238073A1

公开(公告)日：2022-07-28

申请号：US17717261

申请日：2022-04-11

Applicant: Samsung Display Co., Ltd.

Inventor： Kyung Man KIM ,  Seok Gyu BAN

IPC: G09G3/3266 ,  G09G3/3291

Abstract: A display device according to an exemplary embodiment of the present inventive concept includes: pixels; scan lines extending in a row direction and connected to the pixels; a data lines extending in a column direction and connected to the pixels; a receiving lines extending in the column direction and connected to the pixels; and a compensation circuit portion that generates first sensing data by receiving a current flowing to the pixels through the receiving lines, and generates a compensation value that compensates a characteristic of a driving transistor included in each of the pixels by multiplying the first sensing data by a calibration factor that corresponds to a position of each of the pixels, wherein the calibration factor includes a line calibration factors that correspond to the receiving lines.

公开(公告)号：US20210407387A1

公开(公告)日：2021-12-30

申请号：US17475617

申请日：2021-09-15

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Gyu BAN ,  Kyung Man KIM ,  Wook LEE

IPC: G09G3/32

Abstract: A display device includes a display unit, a timing controller, a data driver, and a sensing unit. The display unit includes a data line, a sensing line, and a pixel that includes a light emitting element and a transistor for providing a driving current to the light emitting element. The timing controller generates a first voltage value by compensating a first grayscale value and generates a second voltage value by remapping the first voltage value from a first voltage range to in a second voltage range. The data driver generates a data voltage based on the second voltage value and supplies the data voltage to the data line. The sensing unit provides an initialization voltage to the sensing line. A voltage difference between the data voltage and a threshold voltage of the transistor is greater than or equal to the initialization voltage.

公开(公告)号：US20210134214A1

公开(公告)日：2021-05-06

申请号：US17009676

申请日：2020-09-01

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Gyu BAN ,  Kyung Man KIM ,  Wook LEE

IPC: G09G3/32

Abstract: A display device includes a display unit, a timing controller, a data driver, and a sensing unit. The display unit includes a data line, a sensing line, and a pixel that includes a light emitting element and a transistor for providing a driving current to the light emitting element. The timing controller generates a first voltage value by compensating a first grayscale value and generates a second voltage value by remapping the first voltage value from a first voltage range to in a second voltage range. The data driver generates a data voltage based on the second voltage value and supplies the data voltage to the data line. The sensing unit provides an initialization voltage to the sensing line. A voltage difference between the data voltage and a threshold voltage of the transistor is greater than or equal to the initialization voltage.

公开(公告)号：US20240412681A1

公开(公告)日：2024-12-12

申请号：US18811239

申请日：2024-08-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Joon Hyeok JEON ,  Byoung Kwan AN ,  Sang Myeon HAN ,  Chang Hun KIM ,  Seung Ho PARK ,  Seok Gyu BAN ,  Nam Jae LIM

IPC: G09G3/20 ,  G09G3/3233

Abstract: A display device includes pixels connected to scan lines and data lines, each pixel including a driving transistor and at least one light emitting element, and a timing controller configured to generate output data using external input data. The timing controller includes a first compensator configured generate first data by correcting the external input data using at least one of optical measurement information, a threshold voltage of each of the driving transistors, mobility information, dimming information, and temperature information, and an afterimage compensator configured to generate second data based on age information of each light emitting element and the first data, generate third data based on a current amount corresponding to the first data and a current amount corresponding to the second data, and generate the age information by accumulating the third data.