公开(公告)号：US11328673B2

公开(公告)日：2022-05-10

申请号：US17124581

申请日：2020-12-17

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：US11264445B2

公开(公告)日：2022-03-01

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

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：US11145244B2

公开(公告)日：2021-10-12

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.