公开(公告)号：US20220284855A1

公开(公告)日：2022-09-08

申请号：US17475627

申请日：2021-09-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Byeong Doo KANG ,  Jung Taek Kim ,  Sung Mo Yang ,  Dong Ki Eun ,  Yoon Sup Kim ,  Yoon Ju Kim

IPC: G09G3/3233

Abstract: A display device includes: a low drop-out (“LDO”) regulator which provides a second power voltage to a power line during a first period of one frame; a buck converter which provides a first power voltage to the power line during a third period of the one frame; and a pixel connected to the LDO regulator and the buck converter through the power line. A voltage level of the second power voltage is equal to a voltage level of the first power voltage.

公开(公告)号：US11705075B2

公开(公告)日：2023-07-18

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

CPC classification number: G09G3/3291 ,  G09G2310/027 ,  G09G2320/045

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：US11488534B2

公开(公告)日：2022-11-01

申请号：US17475627

申请日：2021-09-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Byeong Doo Kang ,  Jung Taek Kim ,  Sung Mo Yang ,  Dong Ki Eun ,  Yoon Sup Kim ,  Yoon Ju Kim

IPC: G09G3/3233

Abstract: A display device includes: a low drop-out (“LDO”) regulator which provides a second power voltage to a power line during a first period of one frame; a buck converter which provides a first power voltage to the power line during a third period of the one frame; and a pixel connected to the LDO regulator and the buck converter through the power line. A voltage level of the second power voltage is equal to a voltage level of the first power voltage.

公开(公告)号：US11455935B2

公开(公告)日：2022-09-27

申请号：US17197982

申请日：2021-03-10

Applicant: Samsung Display Co., Ltd.

Inventor： Young Soo Sohn ,  Jong Man Kim ,  Sung Mo Yang ,  Seung Young Choi

IPC: G09G3/20

Abstract: A display device according to an embodiment includes a display panel including a plurality of pixels, and an image sticking compensator configured to generate a second image data by reflecting an age data accumulated in a first image data input from an external source. The image sticking compensator generates the age data by accumulating a deterioration data generated by reflecting a frequency weight corresponding to a determined frequency of a previous frame to an image data of the previous frame after the image data of the previous frame is stored.

公开(公告)号：US11270641B1

公开(公告)日：2022-03-08

申请号：US17236481

申请日：2021-04-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dae Sik Lee ,  Si Duk Sung ,  Sung Mo Yang ,  Sang Hyun Lee

IPC: G09G3/3233

Abstract: A display device includes a first power source, a timing controller, and pixels. The timing controller is connected to the first power source through a main line, an auxiliary line, and a detection line. The pixels are commonly connected to the first power source through a first power line. The first power source includes: a main power source connected to the first power line and the main line; an auxiliary power source connected to the auxiliary line; a rectifier connected between the auxiliary power source and the first power line; and a comparator comparing a voltage of the first power line and providing its output to the detection line.

公开(公告)号：US11062660B1

公开(公告)日：2021-07-13

申请号：US16942224

申请日：2020-07-29

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.