公开(公告)号：US11551622B2

公开(公告)日：2023-01-10

申请号：US17643850

申请日：2021-12-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seokgyu Ban ,  Wook Lee ,  Jaehoon Shin

IPC: G09G3/3291

Abstract: A display apparatus includes a display panel, a compensator, a controller, and a data driver. The compensator determines a degradation grayscale of a compensation region of the display panel. The degradation grayscale may be determined based on a driving time of at least one pixel in the compensation region and degradation data corresponding to the at least one pixel. The controller generates compensated image data for input image data based on the degradation grayscale. The data driver provides a data voltage to the at least one pixel based on the compensated image data.

公开(公告)号：US12260819B2

公开(公告)日：2025-03-25

申请号：US18213898

申请日：2023-06-26

Applicant: Samsung Display Co., Ltd.

Inventor： Namjae Lim ,  Seokgyu Ban ,  Sangmyeon Han ,  Seungho Park ,  Byoungkwan An

IPC: G09G3/3233 ,  G09G3/20

Abstract: A display device includes a display unit which includes a plurality of pixels, a degradation controller which includes a voltage compensator configured to calculate a driving voltage increase amount based on a degradation amount of a maximum degradation pixel among the pixels and a global current controller configured to calculate calculates a first scale factor for compensating a power increase amount according to the driving voltage increase amount, a driving voltage provider which is configured to increase a driving voltage provided to the pixels based on the driving voltage increase amount, a data compensator which is configured to generate output image data by scaling the first scale factor to grayscale values of input image data, and a data driver which is configured to provide data voltages to the pixels based on the output image data.

公开(公告)号：US12106693B2

公开(公告)日：2024-10-01

申请号：US18224917

申请日：2023-07-21

Applicant: Samsung Display Co., Ltd.

Inventor： Seokgyu Ban ,  Kyungman Kim

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/0819 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/0693 ,  G09G2360/147 ,  G09G2360/16

Abstract: A display device includes a display panel including pixels, and a display panel driver configured to perform a first sensing operation to receive first sensing data for a driving transistor of each of the pixels from the pixels, to perform a second sensing operation to receive second sensing data for a light emitting element, and to determine a degradation rate of the light emitting element based on the first sensing data and the second sensing data.

公开(公告)号：US11727845B1

公开(公告)日：2023-08-15

申请号：US17971139

申请日：2022-10-21

Applicant: Samsung Display Co., Ltd.

Inventor： Seokgyu Ban ,  Kyungman Kim

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/0819 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/0693 ,  G09G2360/147 ,  G09G2360/16

Abstract: A display device includes a display panel including pixels, and a display panel driver configured to perform a first sensing operation to receive first sensing data for a driving transistor of each of the pixels from the pixels, to perform a second sensing operation to receive second sensing data for a light emitting element, and to determine a degradation rate of the light emitting element based on the first sensing data and the second sensing data.

公开(公告)号：US12175944B2

公开(公告)日：2024-12-24

申请号：US18145078

申请日：2022-12-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seokgyu Ban ,  Wook Lee ,  Jaehoon Shin

IPC: G09G3/3291

Abstract: A display apparatus includes a display panel, a compensator, a controller, and a data driver. The compensator determines a degradation grayscale of a compensation region of the display panel. The degradation grayscale may be determined based on a driving time of at least one pixel in the compensation region and degradation data corresponding to the at least one pixel. The controller generates compensated image data for input image data based on the degradation grayscale. The data driver provides a data voltage to the at least one pixel based on the compensated image data.

公开(公告)号：US11922869B2

公开(公告)日：2024-03-05

申请号：US17983462

申请日：2022-11-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sunghoon Bang ,  Seokgyu Ban ,  Dong-Ki Eun ,  Seungho Park ,  Wook Lee

IPC: G09G3/3225

CPC classification number: G09G3/3225 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2310/061 ,  G09G2320/0257 ,  G09G2320/0271 ,  G09G2320/041

Abstract: A display device including: a display panel including a plurality of pixels; a display panel driver configured to drive the display panel; a memory device configured to store a reference current-temperature model that is set for the display panel, a global offset of the display panel, which is calculated based on the reference current-temperature model in a manufacturing stage of the display panel, and a local offset of the display panel, which is calculated based on a characteristic difference between the pixels in the manufacturing stage; and a panel temperature determiner configured to measure sensing currents flowing through the pixels when a temperature sensing voltage is applied to the pixels, calculate correction sensing currents by applying the global offset and the local offset to the sensing currents, and determine temperatures of the pixels by substituting the correction sensing currents into the reference current-temperature model.