公开(公告)号：US20240321174A1

公开(公告)日：2024-09-26

申请号：US18530941

申请日：2023-12-06

Applicant: Samsung Display Co., LTD.

Inventor： WONWOO JANG ,  SEUNGHO PARK

IPC: G09G3/20 ,  G06T7/13

CPC classification number: G09G3/2096 ,  G06T7/13 ,  G09G2300/0452 ,  G09G2340/14

Abstract: A display device includes a display panel which displays an image based on an output image signal and a driving controller which generates the output image signal based on an input image signal. The driving controller includes an edge detector which generates an edge value for detecting an edge of the image using a plurality of filters having different sizes from each other, a weight calculator which calculates a weight based on the edge value, and a renderer which converts the input image signal to the output image signal based on the weight.

公开(公告)号：US20240312402A1

公开(公告)日：2024-09-19

申请号：US18420109

申请日：2024-01-23

Applicant: Samsung Display Co., LTD.

Inventor： KYOUNGHO LIM ,  SEUNGHO PARK ,  JAEHOON LEE ,  YOONJU KIM ,  Jongha SHIN ,  KITAE YOON

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2320/0257 ,  G09G2320/045 ,  G09G2320/0626 ,  G09G2320/103 ,  G09G2340/0464

Abstract: Disclosed is a display device, which includes a display panel that displays an image, and a controller that receives image data corresponding to a frame and drives the display panel. The controller divides the image data into a plurality of blocks and determines whether the image is a fixed image based on an inter-frame variation of a block of the plurality of blocks. The controller changes an afterimage prevention operation mode when the number of blocks displaying the fixed image for a period equal to or greater than a first reference value among the plurality of blocks is equal to or greater than a second reference value.

公开(公告)号：US20230274706A1

公开(公告)日：2023-08-31

申请号：US18313837

申请日：2023-05-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： WONWOO JANG ,  SEUNGHO PARK ,  KYOUNGHO LIM

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2360/16 ,  G09G2310/027

Abstract: A display device includes a display panel, a controller, and a data driver. The display panel includes a plurality of pixels. The controller receives image data including data representing a logo, detects a logo region including the logo in the image data, determines a correction gain based on a quotient of a second gray level of a peripheral region adjacent to the logo region and a first gray level of the logo region, and generates corrected image data by correcting the image data based on the correction gain. The data driver provides data signals to the plurality of pixels based on the corrected image data.

公开(公告)号：US20230162644A1

公开(公告)日：2023-05-25

申请号：US17940429

申请日：2022-09-08

Applicant: Samsung Display Co., Ltd.

Inventor： JINHO LEE ,  SUNGJAE PARK ,  SEUNGHWAN PARK ,  YOUNGWOON CHOI ,  SEUNGHO PARK ,  KYOUNGHO LIM ,  NAMJAE LIM

IPC: G09G3/20

CPC classification number: G09G3/2044 ,  G09G2320/0247 ,  G09G2310/0278 ,  G09G2310/027 ,  G09G2340/0435

Abstract: A display device includes: a display panel including a plurality of pixels connected to a plurality of scan lines and a plurality of data lines, respectively; a scan driver, which provides a scan signal to the pixels through the scan lines; a data driver, which provides a data voltage to the pixels through the data lines; and a controller, which controls the scan driver and the data driver, and receives input image data at a variable input frame frequency. The controller determines whether a gray scale value of the input image data is included in any range of a first gray scale range and a second gray scale range different from the first gray scale range, and dithers the input image data when it is determined that the gray scale value of the input image data is included the first gray scale range

公开(公告)号：US20240420650A1

公开(公告)日：2024-12-19

申请号：US18821635

申请日：2024-08-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SANGMYEON HAN ,  SEUNGHO PARK ,  BYOUNGKWAN AN ,  JAEHOON LEE

IPC: G09G3/3291 ,  H10K59/121

Abstract: A display apparatus includes a display panel, a driving controller and a data driver. The display panel includes a pixel. The driving controller generates an age compensation value using a sensed age generated based on sensing data of the pixel and an accumulated age generated based on accumulated grayscale values of input image data, generates a final age based on the age compensation value, and compensates a grayscale value of the input image data based on a final age to generate a data signal. The data driver converts the data signal to a data voltage and outputs the data voltage to the display panel.

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：US20230154382A1

公开(公告)日：2023-05-18

申请号：US17990130

申请日：2022-11-18

Applicant: Samsung Display Co., Ltd.

Inventor： SUNGJAE PARK ,  SEUNGHWAN PARK ,  NAMJAE LIM ,  YOUNGWOON CHOI ,  SEUNGHO PARK ,  JINHO LEE

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2310/0275 ,  G09G2300/0819 ,  G09G2330/021 ,  G09G2320/0626 ,  G09G2310/0232 ,  G09G2330/04

Abstract: A display apparatus includes a display panel, a driving controller and a data driver. The driving controller divides input image data into a plurality of partial image data corresponding to a plurality of display areas of the display panel, calculates local loads corresponding to the plurality of partial image data, determines a scale factor based on the local loads, and applies the scale factor to the input image data to generate a data signal. The data driver converts the data signal to a data voltage and outputs the data voltage to the display panel. The scale factor for a center display area corresponding to a center of the display panel among the plurality of display areas is determined differently from the scale factor for an edge display area corresponding to an edge of the display panel among the plurality of display areas.

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.