公开(公告)号：US20220068176A1

公开(公告)日：2022-03-03

申请号：US17343545

申请日：2021-06-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sang Myeon Han

IPC: G09G3/00 ,  G09G3/32

Abstract: Provided is a display device. The display device includes pixels including light emitting elements, a weight calculation unit configured to calculate a weight of one of the pixels based on an amount of current flowing therethrough and a number of light emitting elements thereof, a deterioration accumulation unit configured to accumulate a deterioration amount of the one of the pixels based on the weight and previous compensation data thereof, and a data compensation unit configured to generate compensation data to be supplied to the one of the pixels based on the deterioration amount thereof.

公开(公告)号：US10269295B2

公开(公告)日：2019-04-23

申请号：US15156227

申请日：2016-05-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sang Myeon Han ,  Dong Sup Jin ,  Chang Kyu Seol ,  Baek Woon Lee ,  Jun Jin Kong ,  Hong Rak Son

IPC: G09G3/3233

Abstract: A display device includes a display unit including pixels, a memory to store degradation data of the pixels, a group-setting portion to classify the pixels into degradation regions according to a degradation degree and based on the degradation data, perform a contour-simplifying process with respect to the degradation regions, classify the degradation regions into labeling regions according to proximity of adjacent ones of the degradation regions, and set one of the degradation regions as a reference region, a sensor to sense electric characteristics of the degradation regions and the reference region as they separately emit light, a compensation amount controller to compare the electric characteristics of the degradation regions with electric characteristics of the reference region, and calculate a per-position compensation data corresponding to a position of the labeling regions, and a converter to convert a first image data into a second image data based on the per-position compensation data.

公开(公告)号：US11830405B2

公开(公告)日：2023-11-28

申请号：US17719289

申请日：2022-04-12

Applicant: Samsung Display Co., LTD.

Inventor： Jae Hoon Lee ,  Kyung Sik Joo ,  Sang Myeon Han

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G2320/0233 ,  G09G2320/041 ,  G09G2320/045 ,  G09G2360/16

Abstract: A display device includes: a display panel including a plurality of pixels; a deterioration compensator that outputs compensation data based on a lifetime value of the plurality of pixels and an input grayscale of input image data; a scan driver that supplies a scan signal to the display panel; and a data driver that supplies a data signal corresponding to the compensation data to the display panel. The deterioration compensator includes a grayscale-current converter that calculates an input current corresponding to the input grayscale.

公开(公告)号：US11170703B2

公开(公告)日：2021-11-09

申请号：US17017259

申请日：2020-09-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Hoon Lee ,  Sang Myeon Han ,  Jong Wook Kim ,  Byoung Kwan An

IPC: G09G3/32

Abstract: There are provided a display device, driving method and sensing unit thereof, where a display device includes a display unit having pixels connected to signal lines; a sensing unit including at least one current sensor connected to at least one of the signal lines; and a compensator connected between the sensing unit and the display unit, wherein the compensator is configured to: calculate degradation weights for positions of the pixels, based on a sensing current measured by the sensing unit and a predetermined reference current value, update degradation accumulated values for the positions whenever the sensing current is measured, by accumulating degradation degrees in which the degradation weights are reflected, generate compensated grayscale values by compensating input grayscale values based on the updated degradation accumulated values, and output the compensated grayscale values to the pixels.

公开(公告)号：US10971065B2

公开(公告)日：2021-04-06

申请号：US15930965

申请日：2020-05-13

Applicant: Samsung Display Co., Ltd.

Inventor： Seokha Hong ,  Sang Myeon Han ,  Jae Hoon Lee

IPC: G09G3/3258 ,  G09G3/20 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display device includes a display panel including first, second, and third color sub-pixels, a data driver, a scan driver, a power supply to provide a power supply voltage to the display panel, and a controller. The controller includes a pure color index calculator to calculate first through third pure color indexes of first through third sub-pixel data, a pure color index histogram generator to generate first through third high pure color index histograms, and first through third low pure color index histograms, a histogram analyzer to determine first through third effective maximum gray levels for the first through third color sub-pixels according to the first through third high pure color index histograms and the first through third low pure color index histograms, and a power supply voltage controller to determine a voltage level of the power supply voltage according to the first through third effective maximum gray levels.

公开(公告)号：US09583042B2

公开(公告)日：2017-02-28

申请号：US14826077

申请日：2015-08-13

Applicant: Samsung Display Co., Ltd.

Inventor： Si-Duk Sung ,  Sang Myeon Han

IPC: G09G3/30 ,  G09G3/32

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2320/0223 ,  G09G2330/02 ,  G09G2330/025

Abstract: A display device includes: a display panel for displaying frames during an elapse of time; and an emission driver for providing first and second emission power sources to the display panel, wherein: each of the frames comprises a first light emitting period, a light non-emitting period and a second light emitting period according to a time sequence, a difference value between the first and second emission power sources is substantially equal to or greater than a reference value during the first and second light emitting periods, and is less than the reference value during the light non-emitting period, and the difference value between the first and second emission power sources decreases over an elapse of time during the first light emitting period, and increases over an elapse of time during the second light emitting period.

Abstract translation: 显示装置包括：显示面板，用于在经过时间期间显示帧; 以及用于向显示面板提供第一和第二发射电源的发射驱动器，其中：每个帧包括根据时间序列的第一发光周期，不发光周期和第二发光周期，差异 在第一和第二发光周期期间，第一和第二发光功率源之间的值基本上等于或大于参考值，并且小于光不发光时段期间的参考值，并且第一 并且第二发光电源在第一发光时段期间经过时间减少，并且在第二发光周期期间经过时间而增加。

公开(公告)号：US20160343302A1

公开(公告)日：2016-11-24

申请号：US15156227

申请日：2016-05-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sang Myeon Han ,  Dong Sup Jin ,  Chang Kyu Seol ,  Baek Woon Lee ,  Jun Jin Kong ,  Hong Rak Son

IPC: G09G3/3233 ,  G09G3/3275 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/043 ,  G09G2370/08

Abstract: A display device includes a display unit including pixels, a memory to store degradation data of the pixels, a group-setting portion to classify the pixels into degradation regions according to a degradation degree and based on the degradation data, perform a contour-simplifying process with respect to the degradation regions, classify the degradation regions into labeling regions according to proximity of adjacent ones of the degradation regions, and set one of the degradation regions as a reference region, a sensor to sense electric characteristics of the degradation regions and the reference region as they separately emit light, a compensation amount controller to compare the electric characteristics of the degradation regions with electric characteristics of the reference region, and calculate a per-position compensation data corresponding to a position of the labeling regions, and a converter to convert a first image data into a second image data based on the per-position compensation data.

Abstract translation: 一种显示装置，包括具有像素的显示单元，存储着像素的劣化数据的存储器，根据劣化程度，根据劣化数据将像素分类为劣化区域的组设定部，进行轮廓简化处理 对于劣化区域，根据相邻的劣化区域的邻近度，将劣化区域分类为标记区域，并将劣化区域中的一个设定为参考区域，检测劣化区域的电特性的传感器和参考 区域，分别发光;补偿量控制器，用于将劣化区域的电特性与参考区域的电特性进行比较，并计算与标记区域的位置对应的每位置补偿数据;以及转换器，用于转换 基于每位置补偿将第一图像数据转换为第二图像数据 数据。

公开(公告)号：US12073767B2

公开(公告)日：2024-08-27

申请号：US18319930

申请日：2023-05-18

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Joon Hyeok Jeon ,  Byoung Kwan An ,  Sang Myeon Han ,  Chang Hun Kim ,  Seung Ho Park ,  Seok Gyu Ban ,  Nam Jae Lim

IPC: G09G3/3208 ,  G06F3/041 ,  G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2096 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0257 ,  G09G2320/041 ,  G09G2320/048 ,  G09G2330/08 ,  G09G2360/16

Abstract: A display device includes pixels connected to scan lines and data lines, each pixel including a driving transistor and at least one light emitting element, and a timing controller configured to generate output data using external input data. The timing controller includes a first compensator configured generate first data by correcting the external input data using at least one of optical measurement information, a threshold voltage of each of the driving transistors, mobility information, dimming information, and temperature information, and an afterimage compensator configured to generate second data based on age information of each light emitting element and the first data, generate third data based on a current amount corresponding to the first data and a current amount corresponding to the second data, and generate the age information by accumulating the third data.

公开(公告)号：US11972721B2

公开(公告)日：2024-04-30

申请号：US17948787

申请日：2022-09-20

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon Lee ,  Kyoung Ho Lim ,  Seung Ho Park ,  Hee Sook Park ,  Sang Myeon Han

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/0271 ,  G09G2320/043

Abstract: A display device is disclosed that includes pixels, a memory, and a degradation compensator. The pixels include light emitting elements. The memory is operable to store degradation information including degradation degrees of the light emitting elements. The degradation compensator is operable to receive the degradation information and generate output grayscales by changing each of input grayscales of the pixels in proportion to each of the degradation degrees. The degradation compensator includes a degradation information changer for changing the degradation information by decreasing a degradation degree having a variation greater than a threshold value among variations of the degradation degrees.

公开(公告)号：US11670212B2

公开(公告)日：2023-06-06

申请号：US17523218

申请日：2021-11-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Hoon Lee ,  Seung Ho Park ,  Jin Ho Lee ,  Sang Myeon Han

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2320/048

Abstract: An image sticking compensation device includes: a deterioration calculator which calculates deterioration data of a current frame based on input image data and sensing frequency information which are received from a timing controller; an accumulator which accumulates the deterioration data and generates age data in which the deterioration data is accumulated; and a compensator which determines a grayscale compensation value corresponding to the age data and an input grayscale value of the input image data, and outputs age compensation data by applying the grayscale compensation value to the input image data. The sensing frequency information includes a frequency of the current frame, and the deterioration data varies in accordance with the frequency of the current frame.