公开(公告)号：US10861360B2

公开(公告)日：2020-12-08

申请号：US16058225

申请日：2018-08-08

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Kyoungho Lim ,  Seokha Hong

IPC: G06F3/038 ,  G09G3/00 ,  G09G3/36

Abstract: A display device includes a pixel column including first to n-th pixels connected to a same data line and different gate lines from each other, a data driving chip which outputs a test data voltage in a test mode and outputs image data voltages in a normal mode, a sensing circuit which is electrically connected to the data line and the data driving chip in the test mode, senses a current output to the first pixel during a first period, and senses a current output to an i-th pixel during a second period, and a signal controller which compares a reference charge amount calculated based on the current sensed during the first period to a first charge amount calculated based on the current sensed during the second period and compensates for a level of an image data voltage applied to the i-th pixel among the image data voltages based on the compared result.

公开(公告)号：US10811638B2

公开(公告)日：2020-10-20

申请号：US15076576

申请日：2016-03-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Haegoo Jung ,  Jangseok Ma ,  Dohyung Ryu ,  Jaewoo Song ,  Jaehoon Lee

IPC: H01L51/52 ,  G02B5/30 ,  H01L27/12 ,  G02B1/14 ,  H01L27/32

Abstract: A display device includes a display panel having a display surface, and a polarizing unit on the display surface of the display panel, the polarizing unit including a linear polarizer that includes at least two portions having different transmittances from each other.

公开(公告)号：US10789687B2

公开(公告)日：2020-09-29

申请号：US16190463

申请日：2018-11-14

Applicant: Samsung Display Co., Ltd.

Inventor： Nam-Gon Choi ,  Namjae Lim ,  Moonshik Kang ,  Jinpil Kim ,  JaeSung Bae ,  Jaehoon Lee

IPC: G06T5/00 ,  G06T3/40

Abstract: In an image processing method that converts image data into output data by performing tone mapping, an edge of an image represented by the image data is determined, a first tone mapping operation is performed on first image data included in the image data, where the first image data represent a first portion of the image not including the edge, whether a gray level of second image data is within a predetermined gray range is determined, where the second image data represent a second portion of the image including the edge, a second tone mapping operation is performed on the second image data when the gray level of the second image data is within the gray range, and the first tone mapping operation is performed on the second image data when the gray level of the second image data is not within the gray range.

公开(公告)号：US20190057631A1

公开(公告)日：2019-02-21

申请号：US16058225

申请日：2018-08-08

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Kyoungho Lim ,  Seokha Hong

IPC: G09G3/00 ,  G09G3/36

Abstract: A display device includes a pixel column including first to n-th pixels connected to a same data line and different gate lines from each other, a data driving chip which outputs a test data voltage in a test mode and outputs image data voltages in a normal mode, a sensing circuit which is electrically connected to the data line and the data driving chip in the test mode, senses a current output to the first pixel during a first period, and senses a current output to an i-th pixel during a second period, and a signal controller which compares a reference charge amount calculated based on the current sensed during the first period to a first charge amount calculated based on the current sensed during the second period and compensates for a level of an image data voltage applied to the i-th pixel among the image data voltages based on the compared result.

公开(公告)号：US20250157405A1

公开(公告)日：2025-05-15

申请号：US19022475

申请日：2025-01-15

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Jihyun Ka ,  Seokje Seong ,  Joosun Yoon

IPC: G09G3/3233

Abstract: Provided are a pixel configured to receive a first initialization voltage during a first period between a writing period of a first scan period and a first emission period of a frame and to receive a second initialization voltage different from the first initialization voltage from a start time point of a second period before a second emission period of a second scan period subsequent to the first scan period, a display apparatus including the pixel, and a driving method of the display apparatus.

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：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：US10431171B2

公开(公告)日：2019-10-01

申请号：US15665935

申请日：2017-08-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Heendol Kim ,  Jaihyun Koh ,  Bonghyun You ,  Jaehoon Lee ,  Dongwon Park

IPC: G09G3/36

Abstract: A method includes applying a common voltage to a display panel, digitally converting a feedback common voltage from the display panel, detecting an effective ripple signal exceeding a reference value based on the digitally converted feedback common voltage, comparing a total number of effective ripple signals detected during a first frame period with a threshold value, determining whether the effective ripple signals of the first frame period are crosstalk inducing signals based on a comparison result, and determining whether to change a polarity pattern of image data signals to be applied to the display panel during a second frame period based on a determination result in terms of the crosstalk inducing signal.

公开(公告)号：US10360839B2

公开(公告)日：2019-07-23

申请号：US15812188

申请日：2017-11-14

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Heendol Kim ,  Jai-Hyun Koh ,  Jaehoon Lee

IPC: G09G3/20 ,  G06T1/20 ,  G06T1/60

Abstract: A display apparatus includes a frame memory storing an input image signal having first and second reference blank durations respectively corresponding to a first frame and a second frame. A blank controller circuit determines a second delay blank duration based on the first and second reference blank durations and a first delay blank duration, a signal delay part generates an output image signal having the first and second delay blank durations corresponding to the first frame and second frame, respectively, is based on the stored input image signal, and a display panel displays an image based on the output image signal. The display apparatus may reduce or prevent flicker caused by variations in driving frequency that may be variable on a per-frame basis. A blank duration of a frame is controller, or a frame may be inserted in a blank duration based on blank durations of adjacent frames.

公开(公告)号：US10157586B2

公开(公告)日：2018-12-18

申请号：US15401369

申请日：2017-01-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jai-Hyun Koh ,  Jaehoon Lee ,  Dong-Won Park ,  Mun-San Park ,  Bonghyun You ,  Seokha Hong

IPC: G06F3/038 ,  G09G3/36

Abstract: A display panel driving apparatus includes a data driving part, a comparing part, a data signal controlling part, and a gate driving part. The data driving part generates a dummy data signal in response to dummy image data, outputs the dummy data signal to a dummy data line of a display panel, generates a data signal in response to image data, and outputs the data signal to a data line of the display panel. The comparing part outputs a comparison signal in response to the dummy data signal and a delayed dummy data signal generated due to a load of the dummy data line. The comparison signal indicates how much the delayed dummy data signal is delayed with respect to the dummy data signal. The data signal controlling part controls the data signal using the comparison signal.