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：US20230306887A1

公开(公告)日：2023-09-28

申请号：US18205913

申请日：2023-06-05

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2320/043 ,  G09G2310/06 ,  G09G2320/029

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：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：US20210287608A1

公开(公告)日：2021-09-16

申请号：US17092966

申请日：2020-11-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Ki MIN ,  Wook LEE ,  Sang Jae YEO

IPC: G09G3/3266 ,  G09G3/3291

Abstract: A display device includes a display unit, a scan driver, and a data driver. The display unit includes pixels coupled to scan lines, sensing scan lines, data lines, and sensing lines. The scan driver supplies a scan signal to the scan lines, and supplies a sensing scan signal to the sensing scan lines. The data driver supplies an image data voltage to the data lines, and detects sensing values of the pixels on a pixel column basis through the sensing lines during a sensing period. The data driver includes an analog-to-digital converter which converts the detected sensing values into digital data during the sensing period and outputs sensing data. The analog-to-digital converter pauses the detection of the sensing values during a first period of the sensing period.

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：US20230119909A1

公开(公告)日：2023-04-20

申请号：US17868220

申请日：2022-07-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Su Min YANG ,  Seung Ho PARK ,  Sung Hoon BANG ,  Sang Jae YEO

IPC: G09G3/20

Abstract: A display device includes: pixels connected to corresponding scan lines, control lines, data lines, and sensing lines, a scan driver which supplies a scan signal to the scan lines, and supplies a control signal to the corresponding control lines, a data driver which supplies one of an image data signal and a sensing data signal to the corresponding data lines, and a sensing driver which senses characteristics of driving transistors of different pixels of the pixels in a previous sensing period and a current sensing period, and determines a final sensing value of a target pixel of the pixels in the current sensing period, based on a difference between a previous sensing value of the target pixel, which is determined based on the sensing in the previous sensing period, and a preliminary sensing value of the target pixel, which is calculated based on the sensing in the current sensing period.

公开(公告)号：US20190164484A1

公开(公告)日：2019-05-30

申请号：US16162105

申请日：2018-10-16

Applicant: Samsung Display Co., Ltd.

Inventor： Sang Jae YEO ,  Wook LEE

IPC: G09G3/3233 ,  G09G3/3291 ,  G09G3/3266

Abstract: A display device includes: a first pixel row including n pixels coupled to a first scan line; a second pixel row including m pixels coupled to a second scan line; a first power voltage source for supplying a first power voltage to the pixels of the first pixel row and the second pixel row through a first power voltage line; a current sensor for sensing a value of a line current flowing between the first power voltage line and a selected pixel row among the first pixel row and the second pixel row; and a timing controller for calculating a converted current value of the selected pixel row, wherein n is a natural number, and m is a natural number greater than n.

公开(公告)号：US20180082639A1

公开(公告)日：2018-03-22

申请号：US15699162

申请日：2017-09-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jeong Hwan SHIN ,  Sung Hoon BANG ,  Sang Jae YEO ,  Oh Jo KWON

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display device includes pixels connected to data lines and scan lines, a first compensator which is connected to sensing lines and senses deviation information of the sensing lines while supplying different voltages to adjacent sensing lines, and a sensing unit which is connected to the first compensator and senses characteristic information of each of the pixels.