公开(公告)号：US11328647B2

公开(公告)日：2022-05-10

申请号：US17159203

申请日：2021-01-27

Applicant: Samsung Display Co., Ltd.

Inventor： Seokha Hong ,  Bonghyun You ,  Hye-Sang Park ,  Heechul Hwang

IPC: G09G3/20

Abstract: A display device includes a display panel and an optical module disposed under the display panel. The display panel includes a first display region under which the optical module is disposed to overlap the first display region in a plan view, the first display region including transparent regions through which light for an operation of the optical module passes and first pixels having a first pixel structure and disposed between the transparent regions, a second display region in which second pixels having a second pixel structure are disposed, and a third display region disposed between the first display region and the second display region, third pixels having a third pixel structure being disposed in the third display region, only part of the third pixels being driven during a display operation.

公开(公告)号：US12293697B2

公开(公告)日：2025-05-06

申请号：US18651869

申请日：2024-05-01

Applicant: Samsung Display Co., LTD.

Inventor： Hyeonmin Kim ,  Yunki Baek ,  Jong-Woong Park ,  Hye-Sang Park ,  Sooyeon Lee ,  Wonbok Lee

IPC: G09G3/20 ,  G09G3/3208

Abstract: In a method of compressing stress data in a display device, the stress data is divided into block stress data for a pixel block, a plurality of compressed codes are generated by encoding the block stress data in a plurality of encoding modes, it is determined whether the plurality of encoding modes are available encoding modes for the block stress data based on code lengths of the plurality of compressed codes and a number of available bits for the pixel block, a final encoding mode is selected among the available encoding modes based on quantization values of the available encoding modes, and a compressed bitstream for the pixel block is generated based on a compressed code corresponding to the final encoding mode among the plurality of compressed codes.

公开(公告)号：US11328691B2

公开(公告)日：2022-05-10

申请号：US17142300

申请日：2021-01-06

Applicant: Samsung Display Co., Ltd.

Inventor： Hyunseuk Yoo ,  Hyungjin Kim ,  Hye-Sang Park ,  Heechul Hwang

IPC: G09G5/10

Abstract: A method of displaying an image on a display panel includes displaying an image of a grayscale value A, imaging the image of the grayscale value A with a camera, displaying an image of a grayscale value B, imaging the image of the grayscale value B with the camera, determining a compensation parameter P of the grayscale value A for each pixel in the display panel using the imaged data of the grayscale value A, determining a representative value Q of probability distribution of the compensation parameters of the grayscale value A from the image of the grayscale value A, determining a representative value R of probability distribution of compensation parameters of the grayscale value B from the image of the grayscale value B and compensating an input image data for each pixel using the value P, the value Q and the value R.

公开(公告)号：US11270618B2

公开(公告)日：2022-03-08

申请号：US17316483

申请日：2021-05-10

Applicant: Samsung Display Co., Ltd.

Inventor： Hyunseuk Yoo ,  Ji-Eun Park ,  Hye-Sang Park ,  Seokha Hong

IPC: G09G3/20 ,  G09G3/00

Abstract: A test apparatus includes: a compensation coefficient calculator configured to calculate a main compensation coefficient for a main gradation and a sub compensation coefficient for a sub gradation based on a detected image signal; a primary predictor configured to determine a representative value of each of a plurality of blocks of a display panel based on the detected image signal, and output a prediction compensation coefficient for the sub gradation based on the main compensation coefficient and the representative value corresponding to each of the plurality of blocks; a secondary predictor configured to determine a flag based on the sub compensation coefficient and the prediction compensation coefficient; and a controller configured to output the main compensation coefficient, the representative value, and the flag stored in a memory as compensation data.

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.