公开(公告)号：US20240135880A1

公开(公告)日：2024-04-25

申请号：US18492681

申请日：2023-10-22

Applicant: Samsung Display Co., LTD.

Inventor： Seok Ha HONG ,  Joon Chul GOH ,  Dong Joon KWAG ,  Hyung Jin KIM ,  Jae Sung BAE

IPC: G09G3/3233 ,  G09G3/20 ,  H01L25/16

CPC classification number: G09G3/3233 ,  G09G3/2007 ,  H01L25/167 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/0285 ,  G09G2320/045 ,  G09G2360/06

Abstract: The display device includes a display panel and a pixel. A compensator configured to calculate a degradation rate of the pixel based on an input gray level of first image data, and compensates the first image data based on the degradation rate to generate second image data. A data driver configured to generate a data signal based on the second image data and configured to supply the data signal to the pixel. The pixel includes a first element group and a second element group connected in series to each other, the first element group includes at least one first light emitting element, and the second element group includes at least one second light emitting element. The compensator is to calculate the degradation rate by applying first information on the number of the first light emitting elements and second information on the number of the second light emitting elements.

公开(公告)号：US20220084459A1

公开(公告)日：2022-03-17

申请号：US17394966

申请日：2021-08-05

Applicant: Samsung Display Co., LTD.

Inventor： Dong Joon KWAG ,  Hyung Jin KIM ,  Seok Ha Hong

IPC: G09G3/32 ,  G01J1/42

Abstract: A method of generating compensation data in a display device includes setting a pixel group including a first target pixel and first non-target pixels adjacent to the first target pixel among a plurality of pixels of a display panel; switching on the first target pixel and switching off the first non-target pixels to generate a first captured image and store the first captured image; switching on the first target pixel and the first non-target pixels to generate a second captured image and store the second captured image; switching off the first target pixel and switching on the first non-target pixels to generate a third captured image and store the third captured image; and calculating luminance correction data of the first target pixel based on the stored first to third captured images.

公开(公告)号：US20230131968A1

公开(公告)日：2023-04-27

申请号：US17881134

申请日：2022-08-04

Applicant: Samsung Display Co., LTD.

Inventor： Dong Joon KWAG ,  Young Soo HWANG ,  Hyung Jin KIM

IPC: G09G3/3291 ,  G09G3/3266

Abstract: A display device includes a display panel including sub-pixels arranged in an image display region of the display panel to display an image, a data driver that applies a data voltage to data lines, a scan signal driver that applies scan signals to scan signal lines, a data compensator that analyzes image data received from an outside to divide at least one deterioration region and deterioration peripheral regions, and compares and analyzes image data of the at least one deterioration region and the deterioration peripheral regions to compensate or modulate the image data of the at least one deterioration region, and a timing controller that controls the data driver and the scan signal driver to display compensation data including the compensated or modulated image data as an image.

公开(公告)号：US20210125577A1

公开(公告)日：2021-04-29

申请号：US16928463

申请日：2020-07-14

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Ha HONG ,  Dong Joon KWAG ,  Hyung Jin KIM ,  Ji-Eun PARK ,  Hye-Sang PARK ,  Hyun Seuk YOO ,  Hee Chul HWANG

IPC: G09G5/02

Abstract: In a method of generating compensation data for a display device, first color, second color, and third color compensation value sets may be obtained by capturing first color, second color, and third color images displayed by the display device, respectively, white, first color, second color, and third color loading luminances may be obtained by capturing white, first color, second color, and third color loading patterns displayed by the display device, respectively, first color, second color, and third color scale factors may be calculated by dividing a luminance decrease ratio of the white loading luminance by luminance decrease ratios of the first color, second color, and third color loading luminances, respectively, and the first color, second color, and third color compensation value sets and the first color, second color, and third color scale factors may be stored in the display device.

公开(公告)号：US20220130346A1

公开(公告)日：2022-04-28

申请号：US17319833

申请日：2021-05-13

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Ha HONG ,  Dong Joon KWAG

IPC: G09G5/10

Abstract: A method for compensating luminance of a display device according to some embodiments of the present disclosure includes capturing an image of the display device, generating imaging data, primarily mapping display pixels of the display device and the imaging data so that a unit mapping area corresponding to the display pixels includes luminance values for image pixels of an imaging device, setting an offset value of the imaging data with respect to the display pixels so that a maximum luminance value among the luminance values is positioned at a center of the unit mapping area, secondarily mapping the imaging data according to the offset value with respect to the display pixels, calculating a representative luminance value, and setting a luminance correction value corresponding to the representative luminance value with respect to one of the display pixels.

公开(公告)号：US20210029347A1

公开(公告)日：2021-01-28

申请号：US16815986

申请日：2020-03-11

Applicant: Samsung Display Co., LTD.

Inventor： Hyun Seuk YOO ,  Dong Joon KWAG ,  Hyung Jin KIM ,  Seong Heon CHO

IPC: H04N17/04 ,  G09G3/00 ,  G09G3/3225

Abstract: A display device relates to a test image measuring device, and includes a housing including one side in which an opening is defined, and a reflector provided to be inclined by a predetermined angle from another side of the housing facing the opening, where a display device including a display unit and an imaging unit is provided above the opening, and a test image displayed from the display unit is photographed by the imaging unit through the reflector.

公开(公告)号：US20240233642A9

公开(公告)日：2024-07-11

申请号：US18492681

申请日：2023-10-23

Applicant: Samsung Display Co., LTD.

Inventor： Seok Ha HONG ,  Joon Chul GOH ,  Dong Joon KWAG ,  Hyung Jin KIM ,  Jae Sung BAE

IPC: G09G3/3233 ,  G09G3/20 ,  H01L25/16

CPC classification number: G09G3/3233 ,  G09G3/2007 ,  H01L25/167 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/0285 ,  G09G2320/045 ,  G09G2360/06

Abstract: The display device includes a display panel and a pixel. A compensator configured to calculate a degradation rate of the pixel based on an input gray level of first image data, and compensates the first image data based on the degradation rate to generate second image data. A data driver configured to generate a data signal based on the second image data and configured to supply the data signal to the pixel. The pixel includes a first element group and a second element group connected in series to each other, the first element group includes at least one first light emitting element, and the second element group includes at least one second light emitting element. The compensator is to calculate the degradation rate by applying first information on the number of the first light emitting elements and second information on the number of the second light emitting elements.

公开(公告)号：US20220070352A1

公开(公告)日：2022-03-03

申请号：US17397387

申请日：2021-08-09

Applicant: Samsung Display Co., LTD.

Inventor： Seok Ha HONG ,  Dong Joon KWAG ,  Hyung Jin KIM

IPC: H04N5/235 ,  G09G3/3291

Abstract: An optical compensation device includes a measurement part that measures a luminance of a reference point of a display panel displaying an image and a luminance of a neighboring point separated from the reference point to generate measurement data, a camera that photographs a surface of the display panel to generate a photographed image, and a compensation part that generates a scaling value of the neighboring point based on the measurement data of the reference point, a photographed data generated based on the photographed image of the reference point, the measurement data of the neighboring point, and a photographed data generated based on the photographed image of the neighboring point, and generates compensation data of the neighboring point based on the scaling value of the neighboring point and the photographed data of the reference point.

公开(公告)号：US20210383736A1

公开(公告)日：2021-12-09

申请号：US17152629

申请日：2021-01-19

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Ha HONG ,  Dong Joon KWAG ,  Hyung Jin KIM ,  Hye Sang PARK

IPC: G09G3/20

Abstract: A luminance compensating apparatus includes a luminance characteristic value calculator calculating a first luminance characteristic value corresponding to a first unit section between first and second reference gray levels, and a second luminance characteristic value corresponding to a second unit section between second and third reference gray levels based on a first luminance value, a second luminance value, and a third luminance value; an expected correction gray level calculator calculating an expected correction gray level corresponding to the first reference gray level based on the first luminance value; and a compensation gray level calculator calculating a gamma compensation value based on the first luminance characteristic value when the expected correction gray level is included in the first unit section, and based on the first luminance characteristic value and the second luminance characteristic value when the expected correction gray level is included in the second unit section.