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：US11049444B2

公开(公告)日：2021-06-29

申请号：US16820433

申请日：2020-03-16

Applicant: Samsung Display Co., Ltd.

Inventor： Jong Wook Kim ,  Eun Zi Kim ,  Byoung Kwan An ,  Seung Ho Park

IPC: G09G3/3208 ,  G09G3/3225 ,  G09G3/3275

Abstract: A display device includes: a display panel including a plurality of pixels configured to receive pixel driving currents; a current sensor configured to measure an entire driving current diverged into the pixel driving currents; and a temperature sensor configured to measure an ambient temperature of the display panel, wherein the display panel includes a degradation compensator configured to generate output grayscale values for the pixels based on the entire driving current, the ambient temperature, and input grayscale values for the pixels.

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：US11315524B2

公开(公告)日：2022-04-26

申请号：US17186712

申请日：2021-02-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Byoung Kwan An ,  Sang Myeon Han ,  Joon Hyeok Jeon

IPC: G09G5/10 ,  G09G3/20 ,  G09G5/393 ,  G09G3/3275

Abstract: A method for restoring deterioration data of a display device, includes: reading deterioration data from a first storage unit; determining whether the deterioration data is abnormal by comparing a first deterioration value of a first block with adjacent deterioration values of adjacent blocks adjacent to the first block; restoring the deterioration data based on a look-up table in which a luminance retention rate according to a degree of deterioration is set and sensing data provided from a sensing unit, when the deterioration data is determined to be abnormal; and generating second image data by compensating for first image data based on the restored deterioration data. The display device includes blocks each including a pixel, the blocks include the first and adjacent blocks, the deterioration data includes deterioration values each representing a degree of deterioration of each of the blocks, and the deterioration values include the first and adjacent deterioration values.

公开(公告)号：US12094401B2

公开(公告)日：2024-09-17

申请号：US18495192

申请日：2023-10-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Byoung Kwan An ,  Seung Ho Park ,  Sang Myeon Han

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0276 ,  G09G2320/041 ,  G09G2330/021

Abstract: A display device includes: pixels that receive data voltages corresponding to output grayscales; a sensing circuit that senses electrical states of the pixels to provide sensing information; and a grayscale converter that generates the output grayscales with respect to the pixels based on input grayscales and the sensing information, wherein the grayscale converter predicts a temperature of at least one of the pixels based on the sensing information, calculates a current control amount for the at least one of the pixels based on the predicted temperature and the input grayscales, and calculates the output grayscales for the at least one of the pixels based on the current control amount and the input grayscales.

公开(公告)号：US20210210000A1

公开(公告)日：2021-07-08

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：US10930245B2

公开(公告)日：2021-02-23

申请号：US16571551

申请日：2019-09-16

Applicant: Samsung Display Co., Ltd.

Inventor： Byoung Kwan An

IPC: G09G5/10 ,  G09G5/18

Abstract: There are provided a display device and a driving method thereof. The display device includes a timing controller configured to generate second image data from first image data, and to output the second image data, and an image display unit configured to output an image corresponding to the second image data, wherein the timing controller is configured to generate the second image data by correcting the first image data based on a comparison result between a target current value, which corresponds to a load value of the first image data, and a measured current value that is measured with respect to the image display unit.