公开(公告)号：US20230129039A1

公开(公告)日：2023-04-27

申请号：US17882361

申请日：2022-08-05

Applicant: Samsung Display Co., Ltd.

Inventor： Tae Hyeong AN ,  Min Seok BAE ,  Jun Woo SON ,  Sang Ik LEE

IPC: H01L27/32 ,  G09G3/3266

Abstract: A display device includes a pixel and a sensing channel connected to the pixel through a sensing line. The pixel includes: a first transistor including a gate electrode connected to a first node, a first electrode connected to a first power line, and a second electrode connected to a second node; a second transistor including a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the first node; a third transistor including a gate electrode connected to a second scan line, a first electrode connected to the second node, and a second electrode connected to a third node; and a fourth transistor including a first electrode connected to the first power line and a second electrode connected to the third node. The sensing line is connected to the third node.

公开(公告)号：US20200271993A1

公开(公告)日：2020-08-27

申请号：US16689304

申请日：2019-11-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Nam Jae LIM ,  Hoi Sik MOON ,  Yoon Gu KIM ,  Jae Sung BAE ,  Seung Young CHOI ,  Tae Hyeong AN

IPC: G02F1/1335 ,  G02F1/1343

Abstract: A display device having a backlight which includes a first quantity of light source blocks that are individually driven at separate duty ratios. The display device includes pixels having a second quantity that is greater than the first quantity. The pixels are configured to determine a light transmission factor for light emitted from the light source blocks. A grayscale compensation unit is configured to calculate color shift amounts of the pixels based on the duty ratios of the light source blocks and compensate input grayscale values for the pixels based on the color shift amounts to correct color shift.

公开(公告)号：US20230419873A1

公开(公告)日：2023-12-28

申请号：US18199372

申请日：2023-05-19

Applicant: Samsung Display Co., Ltd.

Inventor： Byung Ki CHUN ,  Jae Hoon LEE ,  Tae Hyeong AN

IPC: G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2007 ,  G09G3/3233 ,  G09G3/2096 ,  G09G2300/0842 ,  G09G2300/0413 ,  G09G2330/12 ,  G09G2330/08 ,  G09G2320/048 ,  G09G2320/0276

Abstract: Provided is a display device comprising pixel circuits included in the display area, the pixel circuits including light emitting elements with grayscales corresponding to data input from the outside, a dummy pixel circuit included in the non-display area, the dummy pixel circuit including a dummy light emitting element and a dummy driving transistor, a sensing unit for inputting to the dummy pixel circuit, a test data signal for sensing an output signal corresponding to predetermined test data for each predetermined time, and then performing an operation of generating compensation information for compensating for degradation according to a driving time of at least one of the light emitting element and the driving transistor based on the output signal output from the dummy pixel circuit, and a timing controller for accumulating and storing the compensation information, and generating compensated data by compensating for the data input from the outside.

公开(公告)号：US20230410755A1

公开(公告)日：2023-12-21

申请号：US18124609

申请日：2023-03-22

Applicant: Samsung Display Co., Ltd.

Inventor： Tae Hyeong AN ,  Jae Hoon LEE ,  Byung Ki CHUN

IPC: G09G3/3291 ,  G09G3/32

CPC classification number: G09G3/3291 ,  G09G3/32 ,  G09G2320/0257 ,  G09G2320/041

Abstract: Provided is a display device comprising at least one sensing pixel including a sensing pixel circuit, a sensing unit including sensing circuit, and a temperature output unit to calculate a temperature of the display panel based on the sensing data. The sensing data is generated from a sensing pixel including a driving transistor in which a current generated according to temperature varies, and a temperature is measured from the sensing data.

公开(公告)号：US20210287595A1

公开(公告)日：2021-09-16

申请号：US17198441

申请日：2021-03-11

Applicant: Samsung Display Co., Ltd.

Inventor： Tae Hyeong AN ,  Hoi Sik MOON ,  Yoon Gu KIM ,  Jin Pil KIM ,  Jae Sung BAE ,  Nam Jae LIM ,  Ik Hyun AHN ,  Seung Young CHOI

IPC: G09G3/20

Abstract: A display apparatus includes a display panel, a driving controller and a data driver. The driving controller processes input image data according to a variable input frequency and generates a data signal having a varied frame length. The data driver converts the data signal into a data voltage and outputs the data voltage to the display panel. The driving controller determines a variable frequency mode and generates an asymmetric data signal including a positive data signal and a negative data signal which are asymmetric with respect to a common voltage for a same grayscale value in the variable frequency mode.