公开(公告)号：US11496687B2

公开(公告)日：2022-11-08

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: G09G3/3291 ,  H04N5/235

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：US11315525B1

公开(公告)日：2022-04-26

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 ,  G09G3/32

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：US12165556B2

公开(公告)日：2024-12-10

申请号：US17883848

申请日：2022-08-09

Applicant: Samsung Display Co., LTD.

Inventor： Seok Ha Hong ,  Joon Chul Goh ,  Dong Joon Kwag ,  Hyung Jin Kim ,  Ji Eun Park ,  Jae Sung Bae ,  Young Soo Hwang

IPC: G09G3/20

Abstract: A display device includes a display part, a degradation compensator that generates a first compensated grayscale value by compensating for a first grayscale value corresponding to a first pixel, and generates a second compensated grayscale value by compensating for a second grayscale value corresponding to a second pixel, and a data driver that generates a first data signal based on the first compensated grayscale value to supply the first data signal to the first pixel, and generates a second data signal based on the second compensated grayscale value to supply the second data signal to the second pixel. A second degradation curve is defined by a first degradation coefficient corresponding to a first degradation curve, and a second degradation coefficient corresponding to a first estimated degradation curve for the light conversion particles of a second color calculated by applying the first degradation curve.

公开(公告)号：US12100359B2

公开(公告)日：2024-09-24

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

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G2310/0278 ,  G09G2310/08 ,  G09G2320/0271

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：US11423832B2

公开(公告)日：2022-08-23

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：US12073776B2

公开(公告)日：2024-08-27

申请号：US17955327

申请日：2022-09-28

Applicant: Samsung Display Co., LTD.

Inventor： Seok Ha Hong ,  Joon Chul Goh ,  Dong Joon Kwag ,  Jae Sung Bae

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/045 ,  G09G2320/048 ,  G09G2360/147 ,  G09G2360/16

Abstract: An afterimage compensator includes: a pixel data generator configured to generate characteristic data for one or more pixels from among a plurality of pixels by using a captured image; a stress accumulator configured to generate an accumulated stress for the one or more pixels in which stress corresponding to the one or more pixels is accumulated based on an image signal of a voltage domain; a domain converter configured to convert the accumulated stress for the one or more pixels from the voltage domain to accumulated stress data for the one or more pixels of a grayscale domain; and a compensator configured to generate compensation data using the characteristic data for the one or more pixels and the accumulated stress data for the one or more pixels.

公开(公告)号：US11425366B2

公开(公告)日：2022-08-23

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：US11257462B2

公开(公告)日：2022-02-22

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 Chui 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.