公开(公告)号：US11488532B2

公开(公告)日：2022-11-01

申请号：US17366889

申请日：2021-07-02

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Byoungkwan An

IPC: G09G3/3233 ,  G09G3/20 ,  G09G3/3291

Abstract: A display device includes a display panel including a plurality of pixels, a sensing circuit to measure a sensing current value of each of the pixels during a frame period, wherein the frame period includes an active period and a blank period following the active period, and a driving controller to calculate a deterioration weight based on the sensing current value and a reference current value, and to generate output image data by applying the deterioration weight to input image data.

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：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：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：US11501719B2

公开(公告)日：2022-11-15

申请号：US17308424

申请日：2021-05-05

Applicant: Samsung Display Co., Ltd.

Inventor： Yooshin Chon ,  Byoungkwan An

IPC: G09G3/3275

Abstract: A display device includes a display panel which displays an image, an image sticking compensator which receives image data, compensates for the image data based on lifespan data to generate lifespan compensation data, and a panel driver which provides data signals corresponding to the lifespan compensation data to the display panel. The image sticking compensator includes a compensator which receives the first cumulative data, generates the lifespan data based on the first cumulative data, compensates for the image data based on the lifespan data to generate the lifespan compensation data, a memory controller which receives the second cumulative data and the lifespan data from the compensator, a volatile memory which stores the second cumulative data from the memory controller, a main nonvolatile memory which stores the second cumulative data from the memory controller, and a sub-nonvolatile memory which stores the lifespan data from the memory controller.