公开(公告)号：US11250774B2

公开(公告)日：2022-02-15

申请号：US17021971

申请日：2020-09-15

Applicant: Samsung Display Co., Ltd.

Inventor： Bong Gyun Kang ,  Kyun Ho Kim ,  Sung-Mo Yang ,  Young Soo Sohn

IPC: G09G3/3225

Abstract: A display device includes: a screen saver operable to cause an image to be displayed with a lowered luminance in a screen save mode by lowering a scale factor from a first value based on the image being displayed as a still image longer than a reference time; and an overcurrent protection circuit operable to detect an overcurrent and cause a power of the display device to be turned off based on a predetermined current value that is reduced according to the scale factor and comparison between the predetermined current value and a driving current supplied provided to a display panel in which the image is displayed.

公开(公告)号：US11158239B2

公开(公告)日：2021-10-26

申请号：US16134209

申请日：2018-09-18

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Bong Gyun Kang ,  Min Joo Lee ,  Myung Bo Sim ,  Shim Ho Yi ,  Sil Yi Bang ,  Won Bok Lee ,  Jin Hyuk Jang ,  Chan Sung Jung

IPC: G09G3/20 ,  G09G3/3233 ,  G09G5/39 ,  G09G5/00 ,  G09G3/36 ,  G09G3/3275 ,  G09G3/3266

Abstract: A display device, comprising: a timing control unit receiving a video signal including a control pattern from outside and generating a characteristic control signal and image data based on the control pattern; and a display unit displaying an image based on the image data, wherein the control pattern includes a data pattern in which effective data is encoded, and the timing control unit decodes the data pattern to generate the characteristic control signal including the effective data.

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.

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：US10319328B2

公开(公告)日：2019-06-11

申请号：US15800773

申请日：2017-11-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyun Ho Kim ,  Bong Gyun Kang ,  Sang An Kwon ,  Seung Hwan Moon ,  Yong Jin Shin ,  Neung Beom Lee ,  Jun Pyo Lee ,  Kyung Hwa Lim

IPC: G09G3/20 ,  G09G3/36

Abstract: A display device and method is provided that permits selection of a first lookup table or a second lookup table to operate the data driver at respectively different temperatures to prevent heat from damaging the display device. The display device includes a detector which detects the number of toggles in which the amount of change in gray values of successive pixels driven by the same data line in one frame is equal to or greater than a reference gray change amount. A comparator compares the number of toggles detected by the detector with a reference number of toggles, and a lookup table selector which selects any one of a first lookup table and a second lookup table based on the comparison result of the comparator and provides the selected first lookup table or second lookup table to a data driver.