公开(公告)号：US11741865B2

公开(公告)日：2023-08-29

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 ,  G09G3/34

CPC classification number: G09G3/006 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2320/0233 ,  G09G2340/04

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.

公开(公告)号：US11538149B2

公开(公告)日：2022-12-27

申请号：US16894660

申请日：2020-06-05

Applicant: Samsung Display Co., Ltd.

Inventor： Seyun Kim ,  Hoisik Moon ,  Mingyu Kim ,  Sangcheol Park ,  Jae-Seok Choi

IPC: G06T7/00

Abstract: Provided is a spot detection device including an imager configured to capture a display panel displaying a first image of a first grayscale and a second image of a second grayscale different from the first grayscale and generate image data, and a spot detector configured to receive the image data from the imager in order to detect a spot. The image data includes first image data obtained by capturing the first image, second image data obtained by capturing the second image, and a plurality of third image data obtained by capturing portions of the first image.

公开(公告)号：US09763292B2

公开(公告)日：2017-09-12

申请号：US14841464

申请日：2015-08-31

Applicant: Samsung Display Co., Ltd.

Inventor： Wonhyoung Kang ,  Mingyu Kim ,  Taegon Im ,  Songyi Han ,  Jintaek Hong

IPC: H05B37/02 ,  H05B33/08 ,  G09G3/34 ,  H05B37/03

CPC classification number: H05B33/0815 ,  G09G3/3406 ,  G09G3/3426 ,  H05B33/0845 ,  H05B33/0851 ,  H05B33/089 ,  H05B37/0245 ,  H05B37/0263 ,  H05B37/029 ,  H05B37/032

Abstract: A backlight unit includes: a light source configured to emit light based on a driving current; and a backlight controller receiving a digital dimming signal that defines a length of an output period of the driving current from a pulse width modulator and configured to, when a duty ratio of the driving current is less than a reference duty ratio, modulates the duty ratio of the driving current so that the duty ratio of the driving current is equal to or greater than the reference duty ratio and decrease a duty ratio of the digital dimming signal.

公开(公告)号：US11049432B2

公开(公告)日：2021-06-29

申请号：US16701753

申请日：2019-12-03

Applicant: Samsung Display Co., Ltd.

Inventor： Mingyu Kim ,  Hoisik Moon ,  Hee Joon Kim ,  Juneyoung Lee

IPC: G09G3/20 ,  G09G3/36 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display apparatus includes a display panel, a driving controller, a gate driver and a data driver. The display panel includes a plurality of gate lines, a plurality of data lines and a plurality of pixels. The pixels are connected to the gate lines and the data lines. The driving controller determines a compensating value of a present data signal based on a previous data signal and the present data signal which are applied to a same data line of the data lines. The gate driver outputs a gate signal to the gate line. The data driver generates a data voltage based on the present data signal and the compensating value and outputs the data voltage to the same data line.

公开(公告)号：US10146076B2

公开(公告)日：2018-12-04

申请号：US15132398

申请日：2016-04-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seungwan Kim ,  Mingyu Kim ,  Youngsup Kwon ,  Byungkyou Min ,  Jinwon Jang

IPC: G02F1/1333 ,  G06F1/16 ,  G02F1/1345 ,  H02H3/20 ,  H05K1/02 ,  H05K1/18 ,  H05K5/00 ,  H05K7/02 ,  H05K7/20 ,  G02F1/133 ,  G02F1/1339 ,  H01L51/52

Abstract: A curved display device including: a display panel having a curvature; a frame which supports the display panel; and a control circuit coupled to the frame, where the control circuit includes a circuit board coupled to the frame, and an electronic element on a surface of the circuit board opposing the frame.

公开(公告)号：US20190197935A1

公开(公告)日：2019-06-27

申请号：US16189665

申请日：2018-11-13

Applicant: Samsung Display Co., Ltd.

Inventor： Heejoon Kim ,  Hoi-Sik Moon ,  Mingyu Kim ,  Jeongwoon Lee

IPC: G09G3/20

Abstract: A display device including a display panel includes a plurality of pixels corresponding to a plurality of regions, an image compensator configured to obtain compensation data for the pixels by performing respective sampling compensation operations for the regions, and to generate compensated image data by compensating input image data based on the compensation data, the compensation data being generated by performing at least two of the sampling compensation operations based on respective sampling matrices having different sizes, and a display panel driver configured to drive the display panel to display an image corresponding to the compensated image data on the display panel.

公开(公告)号：US10165636B2

公开(公告)日：2018-12-25

申请号：US15213270

申请日：2016-07-18

Applicant: Samsung Display Co., Ltd.

Inventor： Youngsup Kwon ,  Mingyu Kim ,  Byungkyou Min ,  Jinwon Jang

IPC: H05B37/02 ,  H05B33/08 ,  G02F1/1335

Abstract: A display device is disclosed. In one aspect, the display device includes a display panel including a first display panel and a second display panel. The display device also includes a first light source unit disposed to correspond to the first display panel, a second light source unit disposed to correspond to the second display panel, a direct current (DC)-DC converter configured to receive a driving power and generate a first light source driving voltage configured to drive the first light source unit, and a regulator configured to receive the driving power and generate a second light source driving voltage configured to drive the second light source unit.

公开(公告)号：US12236572B2

公开(公告)日：2025-02-25

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

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：US10885829B2

公开(公告)日：2021-01-05

申请号：US16459365

申请日：2019-07-01

Applicant: Samsung Display Co., Ltd.

Inventor： Mingyu Kim ,  Hee Joon Kim ,  Jae Seob Chung ,  Hoi Sik Moon

IPC: G09G3/36 ,  G09G3/20

Abstract: A driving controller includes a first compensator and a second compensator. The first compensator is configured to generate first compensation data based on input image data. The second compensator is configured to generate second compensation data based on present frame data of the input image data, previous frame data of the input image data, present frame data of the first compensation data and previous frame data of the first compensation data.

公开(公告)号：US10789870B2

公开(公告)日：2020-09-29

申请号：US16189665

申请日：2018-11-13

Applicant: Samsung Display Co., Ltd.

Inventor： Heejoon Kim ,  Hoi-Sik Moon ,  Mingyu Kim ,  Jeongwoon Lee

IPC: G09G3/20 ,  G09G3/00 ,  G09G3/36 ,  G09G3/3208

Abstract: A display device including a display panel includes a plurality of pixels corresponding to a plurality of regions, an image compensator configured to obtain compensation data for the pixels by performing respective sampling compensation operations for the regions, and to generate compensated image data by compensating input image data based on the compensation data, the compensation data being generated by performing at least two of the sampling compensation operations based on respective sampling matrices having different sizes, and a display panel driver configured to drive the display panel to display an image corresponding to the compensated image data on the display panel.