公开(公告)号：US20240420635A1

公开(公告)日：2024-12-19

申请号：US18740082

申请日：2024-06-11

Applicant: Samsung Display Co., LTD.

Inventor： HAKMO CHOI ,  SEYUN KIM ,  HUISU KIM ,  HYUNGWOO YIM

IPC: G09G3/3233 ,  G09G3/20

Abstract: A display device includes: a display panel, which includes a pixel; a voltage generator, which generates a driving voltage for an operation of the display panel; and a driving controller, which receives an input image signal and outputs an output image signal obtained by compensating for the input image signal based on a characteristic of the display panel. The driving controller includes: a control unit, which outputs an error correction value corresponding to a voltage difference between a voltage level of the driving voltage provided from the voltage generator and a voltage level stored in advance in the control unit when the driving voltage is provided from the voltage generator; and an image correction unit. which converts the input image signal into the output image signal based on the error correction value.

公开(公告)号：US20250124853A1

公开(公告)日：2025-04-17

申请号：US18731256

申请日：2024-06-01

Applicant: Samsung Display Co., LTD.

Inventor： MINGYU KIM ,  HUISU KIM ,  SEYUN KIM ,  SEUNGHO PARK

IPC: G09G3/32 ,  G09G3/20

Abstract: A display device include: a display panel including first to third pixels, a data driver for providing first to third data voltages to the first to third pixels, and a scan driver for providing first and second scan signals to each of the first to third pixels. The scan driver performs a first active scan operation of sequentially providing the first and second scan signals to the first to third pixels in a first frame period, and perform a dummy scan operation of sequentially providing the second scan signal to the first to third pixels after the first active scan operation. The data driver changes a voltage level of at least one of the first to third data voltages in an overlap period in which the dummy scan operation and a second active scan operation of a second frame period are simultaneously performed.

公开(公告)号：US20240362766A1

公开(公告)日：2024-10-31

申请号：US18596017

申请日：2024-03-05

Applicant: Samsung Display Co., Ltd.

Inventor： MINGYU KIM ,  SEYUN KIM ,  SEUNGHO PARK ,  HYUNGWOO YIM

IPC: G06T7/00 ,  G09G3/20

CPC classification number: G06T7/0004 ,  G09G3/20 ,  G06T2207/30108 ,  G09G2320/0233 ,  G09G2330/10

Abstract: An inspection system for inspecting a display device including pixels includes a camera for capturing the display device and providing a sensing image signal and an inspection device for receiving the sensing image signal and outputting a compensation signal for compensating for luminance of a defective pixel. The inspection device includes an image detector outputting a sensing input signal corresponding to the sensing image signal, a defect coordinate detector detecting the defective pixel based on the sensing input signal and outputting defect coordinates indicating a position of the defective pixel, an image analyzer analyzing consistency of the defect coordinates based on the sensing image signal and the sensing input signal and outputting final coordinates, and a defect compensation calculator outputting a compensation signal for adjusting luminance of compensation pixels adjacent to the defective pixel from among the pixels based on the final coordinates.

公开(公告)号：US20250054450A1

公开(公告)日：2025-02-13

申请号：US18766735

申请日：2024-07-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： HAKMO CHOI ,  SEYUN KIM ,  HYUNGWOO YIM ,  HUISU KIM ,  SEUNGHO PARK

IPC: G09G3/3258 ,  G09G3/00 ,  G09G3/32

Abstract: A system for compensating a stain in a display device including a display panel including pixels and a driving controller, an imaging unit, and an inspection device including a defect characteristic classifying unit, and a compensation data generating unit. The inspection device generates first measurement data and second measurement data. The inspection device compares second image data with compensation data that is based on the first and second measurement data, and the defect characteristic classifying unit classifies, as a first defect pixel or a second defect pixel a plurality of pixels, based on the first measurement data, the second measurement data, and the second image data. The compensation data generating unit generates a first compensating value for compensating for the first defect pixel in a first pixel unit, and a second compensating value for compensating for the second defect pixel in a second pixel unit different from the first unit.

公开(公告)号：US20230245610A1

公开(公告)日：2023-08-03

申请号：US18085489

申请日：2022-12-20

Applicant: Samsung Display Co., Ltd.

Inventor： HUISU KIM ,  SEYUN KIM ,  HYUNGWOO YIM ,  HAKMO CHOI ,  SEUNGHO PARK ,  KYUNG-SIK JOO

IPC: G09G3/20 ,  G06T7/90

CPC classification number: G09G3/2003 ,  G06T7/90 ,  G09G2330/08 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0673 ,  G06T2207/30168 ,  G06T2207/20221

Abstract: A method of detecting a stain of a display panel is disclosed that includes capturing a first color image of the display panel, capturing a second color image of the display panel, generating a merged image by merging a color coordinate map of the first color image and a color coordinate map of the second color image, generating a background image of the merged image by a morphology filtering, generating a flattened image by operating the merged image and the background image and detecting an area of the flattened image in which a color coordinate value exceeds a threshold value as a stain area.

公开(公告)号：US20240420619A1

公开(公告)日：2024-12-19

申请号：US18599222

申请日：2024-03-08

Applicant: Samsung Display Co., Ltd.

Inventor： BYOUNG SEOK YOO ,  SEUNGHO PARK ,  SEYUN KIM

IPC: G09G3/20

Abstract: A display device is disclosed that includes a display panel, a memory storing compensation signals respectively corresponding to blocks of the display panel, and a driving controller receiving an input image signal, compensating for the input image signal based on the compensation signals, and outputting an output image signal. The driving controller includes first to fourth memories storing the compensation signals from the memory. The compensation signals stored in the memory include first row compensation signals corresponding to blocks disposed at a first row among the blocks and second row compensation signals corresponding to blocks disposed at a second row among the blocks. Some of the first row compensation signals are stored in the first memory, and the others thereof are stored in the second memory. Some of the second row compensation signals are stored in the third memory, and the others thereof are stored in the fourth memory.

公开(公告)号：US20230252921A1

公开(公告)日：2023-08-10

申请号：US17882663

申请日：2022-08-08

Applicant: Samsung Display Co., Ltd.

Inventor： HYUNGWOO YIM ,  SEYUN KIM ,  HUISU KIM ,  HAKMO CHOI ,  SEUNGHO PARK ,  KYUNG-SIK JOO

IPC: G09G3/00 ,  G09G3/20

CPC classification number: G09G3/006 ,  G09G3/2096 ,  G09G2360/16 ,  G09G2320/0233 ,  G09G2330/08

Abstract: A test method includes generating first image data by imaging a display panel including pixels, generating boundary data by detecting a spot area in the display panel based on the first image data, generating second image data by deblurring the first image data with respect to a boundary area disposed at a boundary of the spot area based on the boundary data and generating correction data by setting a correction area including the boundary area based on the second image data.

公开(公告)号：US20210398462A1

公开(公告)日：2021-12-23

申请号：US17191600

申请日：2021-03-03

Applicant: Samsung Display Co., Ltd.

Inventor： SIHUN JANG ,  SEYUN KIM ,  SANGCHEOL PARK ,  MINGYU KIM

IPC: G09G3/00

Abstract: A test apparatus includes a mura detection filter for detecting a mura area based on a detected image signal and outputting position information of the mura area and a filtered image signal, an image enhancement processor for performing deblurring on the filtered image signal based on the position information and outputting a deblurred image signal, a mura corrector for generating first compensation data for the mura area based on the deblurred image signal, a sampling corrector for generating second compensation data for a non-mura area based on the detected image signal, and a compensator for outputting compensation data based on the first compensation data and the second compensation data.