公开(公告)号：US10600359B2

公开(公告)日：2020-03-24

申请号：US15839497

申请日：2017-12-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seungho Park ,  Baekwoon Lee

IPC: G09G3/30 ,  G09G3/3208 ,  G09G3/20 ,  G09G3/10 ,  H01L51/56 ,  H01L27/32

Abstract: An organic light emitting display apparatus includes a first data line, a comparator, and a data generator. The first data line is connected to a first pixel. The comparator compares first image data of input image data to at least one of a first critical grayscale value or a second critical grayscale value, where the first image data corresponds to the first pixel. The data generator determines the first critical grayscale value or the second critical grayscale value as first corrected image data when the first image data is equal to or greater than the first critical grayscale value but lower than the second critical grayscale value.

公开(公告)号：US09870732B2

公开(公告)日：2018-01-16

申请号：US14922357

申请日：2015-10-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seungho Park ,  Baekwoon Lee

IPC: G09G5/02 ,  G09G3/3208 ,  G09G3/20

CPC classification number: G09G3/3208 ,  G09G3/2055 ,  G09G2320/0233 ,  G09G2320/0247

Abstract: An organic light emitting display apparatus includes a first data line, a comparator, and a data generator. The first data line is connected to a first pixel. The comparator compares first image data of input image data to at least one of a first critical grayscale value or a second critical grayscale value, where the first image data corresponds to the first pixel. The data generator determines the first critical grayscale value or the second critical grayscale value as first corrected image data when the first image data is equal to or greater than the first critical grayscale value but lower than the second critical grayscale value.

公开(公告)号：US12260819B2

公开(公告)日：2025-03-25

申请号：US18213898

申请日：2023-06-26

Applicant: Samsung Display Co., Ltd.

Inventor： Namjae Lim ,  Seokgyu Ban ,  Sangmyeon Han ,  Seungho Park ,  Byoungkwan An

IPC: G09G3/3233 ,  G09G3/20

Abstract: A display device includes a display unit which includes a plurality of pixels, a degradation controller which includes a voltage compensator configured to calculate a driving voltage increase amount based on a degradation amount of a maximum degradation pixel among the pixels and a global current controller configured to calculate calculates a first scale factor for compensating a power increase amount according to the driving voltage increase amount, a driving voltage provider which is configured to increase a driving voltage provided to the pixels based on the driving voltage increase amount, a data compensator which is configured to generate output image data by scaling the first scale factor to grayscale values of input image data, and a data driver which is configured to provide data voltages to the pixels based on the output image data.

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：US12080249B2

公开(公告)日：2024-09-03

申请号：US17443606

申请日：2021-07-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sangmyeon Han ,  Seungho Park ,  Byoungkwan An ,  Jaehoon Lee

IPC: G09G3/3291 ,  H10K59/121

CPC classification number: G09G3/3291 ,  H10K59/1213 ,  H10K59/1216 ,  G09G2310/027 ,  G09G2320/0257

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：US11961493B2

公开(公告)日：2024-04-16

申请号：US17943296

申请日：2022-09-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jinho Lee ,  Seunghwan Park ,  Youngwoon Choi ,  Sungjae Park ,  Seungho Park ,  Kitae Yoon ,  Namjae Lim

IPC: G09G5/10 ,  G09G3/3233

CPC classification number: G09G5/10 ,  G09G2310/027 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2340/16 ,  G09G2360/16

Abstract: A display device including: a display panel including first through N-th pixel rows; and a panel driver configured to sequentially receive first through N-th line data for the first through the N-th pixel rows in each frame period, and to drive the display panel based on the first through the N-th line data, the panel driver including: a current control circuit configured to determine a current control value for a (K+1)-th pixel row based on the first through K-th line data for the first through K-th pixel rows received in a current frame period and (K+1)-th through the N-th line data for the (K+1)-th through the N-th pixel rows received in a previous frame period; and a data correction circuit configured to correct the (K+1)-th line data for the (K+1)-th pixel row based on the current control value in the current frame period.

公开(公告)号：US20230040791A1

公开(公告)日：2023-02-09

申请号：US17882612

申请日：2022-08-08

Applicant: Samsung Display Co., LTD.

Inventor： NAMJAE LIM ,  Sungjae Park ,  Seungho Park ,  Seunghwan Park ,  Jaehoon Lee ,  Jinho Lee ,  Youngwoon Choi

IPC: G09G3/3291 ,  G09G3/3266

Abstract: A display device includes a display panel, a luminance compensator, and a data driver. The display panel includes a plurality of pixels. The luminance compensator is configured to calculate a scaling factor based on a target current, a black image current, and a sensing current. The target current is calculated based on an input current input to the display panel. The sensing current is measured from the display panel. The data driver is configured to generate a data voltage based on input image data to supply the data voltage to the pixels. The data voltage has a voltage level adjusted based on the scaling factor.

公开(公告)号：US12165578B2

公开(公告)日：2024-12-10

申请号：US18367483

申请日：2023-09-13

Applicant: Samsung Display Co., Ltd.

Inventor： Jongman Kim ,  Sangmyeon Han ,  Byoungkwan An ,  Seungho Park ,  Namjae Lim ,  Joonhyeok Jeon

IPC: G09G3/3208

Abstract: A display driver includes a nonvolatile memory, an encoder, a decoder, and a compensator. The nonvolatile memory is configured to store accumulated stress data and compensation data corresponding to the accumulated stress data. The encoder is configured to encode the compensation data received from the nonvolatile memory to generate encoded compensation data. The decoder is configured to decode the encoded compensation data to generate decoded compensation data. The compensator is configured to process input image data based on the decoded compensation data and generate accumulated stress data.

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.