公开(公告)号：US12125442B2

公开(公告)日：2024-10-22

申请号：US18379323

申请日：2023-10-12

Applicant: Samsung Display Co., LTD.

Inventor： Byoungkwan An ,  Joonhyeok Jeon ,  Sangmyeon Han ,  Seungho Park

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G2320/0242 ,  G09G2320/0276 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2320/0626 ,  G09G2360/16

Abstract: A driving controller of a display device includes: an accumulation unit, which outputs accumulation data, which is obtained by accumulating a deterioration state, and a deterioration stress value based on an input image signal and a deterioration prediction temperature value; a temperature prediction unit that calculates the deterioration prediction temperature value based on the accumulation data, a color acceleration coefficient, a color current contribution ratio, and a temperature signal; and a compensation unit that outputs an output image signal based on the input image signal and the deterioration stress value.

公开(公告)号：US12051346B2

公开(公告)日：2024-07-30

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 ,  G09G2320/0233 ,  G09G2330/10 ,  G09G2360/16

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：US12033563B2

公开(公告)日：2024-07-09

申请号：US18239384

申请日：2023-08-29

Applicant: Samsung Display Co., LTD.

Inventor： Jung-Taek Kim ,  Seungho Park ,  Joonsuk Baik

IPC: G09G3/20 ,  G09G3/00 ,  G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/2096 ,  G09G3/006 ,  G09G3/3233 ,  G09G3/3275 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2310/08 ,  G09G2320/041 ,  G09G2320/045 ,  G09G2330/08 ,  G09G2330/12

Abstract: A display device includes a display panel which operates in a sensing mode or an emission mode, and a data driver electrically connected to the display panel. The display panel includes a first pixel, a second pixel, a third pixel, a fourth pixel, a fifth pixel, a sixth pixel, a first scan line, a second scan line, a first data line, the second pixel. The data driver includes a first switch, a second switch, and an analog front end. The sensing mode includes a first period in which a first scan signal is provided to the first scan line and the first switch is turned on, a second period in which the first scan signal is provided to the first scan line and the second switch is turned on, and a third period in which a second scan signal is provided to the second scan line.

公开(公告)号：US12020607B2

公开(公告)日：2024-06-25

申请号：US18125622

申请日：2023-03-23

Applicant: Samsung Display Co., Ltd.

Inventor： Jongbin Kim ,  Seungho Park ,  Boyoung An ,  Wook Lee ,  Ji-Woong Jeong

IPC: G09G3/00 ,  G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G09G3/2096 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2320/041 ,  G09G2330/028 ,  G09G2330/12

Abstract: A display apparatus includes a display panel including pixels, a gate driver outputting gate signals to the pixels, a data driver outputting data voltages to the pixels, a sensing circuit receiving sensed signals from the pixels, a power voltage generator applying a power voltage, and a driving controller for stopping the display panel, the gate driver, the data driver, and/or the power voltage generator when the display panel is determined to be defective. The driving controller selects a first-mode threshold set or a second-mode threshold set based on an initial value set related to the sensed signals for determining whether the display panel is defective. Thresholds in the first-mode threshold set respectively correspond to and are respectively unequal to thresholds in the second-mode threshold set.

公开(公告)号：US11817031B2

公开(公告)日：2023-11-14

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 ,  G09G3/3225 ,  G09G3/3275 ,  G09G3/36

CPC classification number: G09G3/2044 ,  G09G3/2051 ,  G09G3/2055 ,  G09G3/3225 ,  G09G3/3275 ,  G09G3/3685 ,  G09G2310/027 ,  G09G2310/0278 ,  G09G2320/0247 ,  G09G2320/0271 ,  G09G2340/0435 ,  G09G2360/16

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：US20220076635A1

公开(公告)日：2022-03-10

申请号：US17326684

申请日：2021-05-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： WONWOO JANG ,  Seungho Park ,  Kyoungho Lim

IPC: G09G3/3275

Abstract: A display device includes a display panel, a controller, and a data driver. The display panel includes a plurality of pixels. The controller detects a logo region including a logo in image data, determines a correction gain based on a first average gray level of the logo region and a second average gray level of a peripheral region adjacent to 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：US10984698B2

公开(公告)日：2021-04-20

申请号：US16292585

申请日：2019-03-05

Applicant: Samsung Display Co., Ltd.

Inventor： Jihye Shin ,  Seungho Park ,  Seonhaeng Kim

IPC: G09G3/20 ,  G09G3/3208 ,  G09G3/36

Abstract: A method of performing image-adaptive tone mapping includes: determining a tone mapping curve based on a data signal corresponding to an image frame to be displayed on a display panel; determining whether a scene-change occurs between the image frame and a previous image frame by comparing the data signal with a previous data signal corresponding to the previous image frame; generating, in response to a determination that the scene-change does not occur, a final tone mapping curve based on the tone mapping curve and a previous tone mapping curve, which is applied to the previous image frame; determining, in response to a determination that the scene change occurs, the tone mapping curve as the final tone mapping curve; and performing a tone mapping by applying the final tone mapping curve to the image frame.