公开(公告)号：US10950202B2

公开(公告)日：2021-03-16

申请号：US16601382

申请日：2019-10-14

Applicant: Samsung Display Co., Ltd.

Inventor： Nam-Gon Choi ,  Hoi Sik Moon ,  Jai-Hyun Koh ,  Yoongu Kim ,  Namjae Lim ,  Seung Young Choi ,  JaeSung Bae ,  Taehyeong An ,  Byoung Seok Yoo

IPC: G09G5/10

Abstract: A display apparatus includes a local dimmer, an image compensator, a display panel and a light source. The local dimmer is configured to generate a dimming signal representing a degree of dimming for a light source block based on input image data. The image compensator is configured to determine a grayscale gain based on input grayscale value of the input image data and the dimming signal and to compensate luminance of the input image data based on the grayscale gain. The display panel is configured to display an image based on the compensated input image data. The light source is configured to provide light to the display panel based on the dimming signal.

公开(公告)号：US10146091B2

公开(公告)日：2018-12-04

申请号：US14884144

申请日：2015-10-15

Applicant: Samsung Display Co., Ltd.

Inventor： Namjae Lim ,  Jai-Hyun Koh ,  Sungjae Park ,  Ik Soo Lee

IPC: G02F1/1343 ,  G02F1/1362 ,  G09G3/36

Abstract: A display apparatus includes gate lines extending in a first direction, data lines crossing the first direction and having polarities of data voltages consecutively repeated every four data lines, and pixels which each comprise three sub-pixels. One of the three sub-pixels has a width in the first direction different from a width in the first direction of another sub-pixel of the three sub-pixels. Each of the three sub-pixels is connected to a corresponding gate line and a corresponding data line. The polarities of the data voltages applied to a first data line and a third data line are opposite and the polarities of the data voltages applied to a second data line and a fourth data line are opposite. The pixels arranged between two adjacent data lines among the plurality of data lines are alternately connected to the two adjacent data lines.

公开(公告)号：US12073756B2

公开(公告)日：2024-08-27

申请号：US18102803

申请日：2023-01-30

Applicant: Samsung Display Co., Ltd.

Inventor： Sungjae Park ,  Seunghwan Park ,  Jinho Lee ,  Namjae Lim ,  Kyung-Sik Joo

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G2320/0233 ,  G09G2320/0673 ,  G09G2320/0686 ,  G09G2340/0435 ,  G09G2360/145

Abstract: A method of compensating for luminance of a display device includes determining position compensation values of each of panel blocks for measurement grayscale values based on a difference between luminance of a reference panel block and luminance of the each of the panel blocks for the measurement grayscale values, generating a first gamma curve for a first driving frequency and the position compensation values of the each of the panel blocks for the measurement grayscale values, generating a second gamma curve for a second driving frequency and the luminance of the panel blocks for the measurement grayscale values at the first driving frequency, and compensating for input image data based on the first gamma curve and the second gamma curve.

公开(公告)号：US11355052B2

公开(公告)日：2022-06-07

申请号：US16700187

申请日：2019-12-02

Applicant: Samsung Display Co., Ltd.

Inventor： Tae-Jong Jun ,  Jae Sung Bae ,  Sanghyun Lee ,  Daeki Park ,  Namjae Lim

IPC: G09G3/20 ,  G09G5/14 ,  G06F3/14

Abstract: A display apparatus includes a display panel including a plurality of pixels, and a driver which receives input image data, generates final image data by compensating the input image data to increase luminances of pixels disposed in at least one edge portion of the display panel among the plurality of pixels, and drives the display panel based on the final image data. The input image data for a pixel of the pixels is compensated based on a compensation constant determined according to a position of the pixel when the input image data for the pixel represents a gray level higher than or equal to a first reference gray level, and is compensated based on a reduced compensation constant that is reduced from the determined compensation constant when the input image data for the pixel represents the gray level lower than the first reference gray level.

公开(公告)号：US11043184B2

公开(公告)日：2021-06-22

申请号：US16523479

申请日：2019-07-26

Applicant: Samsung Display Co., Ltd.

Inventor： Taehyeong An ,  Jai-Hyun Koh ,  Hoi Sik Moon ,  Jae Sung Bae ,  Namjae Lim ,  Nam-Gon Choi

IPC: G09G5/00

Abstract: A display device includes a display panel comprising a plurality of pixels, a data driver configured to generate data voltages based on a gamma reference voltage, and to provide the data voltages to the plurality of pixels, a gate driver configured to provide gate signals to the plurality of pixels, and a controller configured to control the data driver and the gate driver. The controller is configured to initialize the gamma reference voltage when a blank period starts in a frame period comprising an active period and the blank period, and to change the gamma reference voltage when a duration of the blank period reaches at least one threshold time.

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：US10339852B2

公开(公告)日：2019-07-02

申请号：US15621346

申请日：2017-06-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jinpil Kim ,  Jung-Won Kim ,  Jaesung Bae ,  Namjae Lim

IPC: G09G3/20

Abstract: A display panel includes a plurality of pixels, data lines, gate lines, a gate driver and terminals. The plurality of pixels form a plurality of rows and columns. The plurality of data lines extend in a first direction parallel to the pixel columns. Each data line is connected to at least two adjacent pixels included in a single pixel row. The plurality of gate lines extend in a second direction parallel with the plurality of pixel rows. The gate lines each connect to at least one pixel included in a single pixel row. At least two gate lines are disposed between two adjacent pixel rows. The gate driver generates signals to drive the plurality of gate lines. The plurality of terminals receives the gate signals to transmit the gate signals to the plurality of gate lines. Some of the terminals connect with some gate lines having a cross-coupled structure.

公开(公告)号：US10157564B2

公开(公告)日：2018-12-18

申请号：US15644448

申请日：2017-07-07

Applicant: Samsung Display Co., Ltd.

Inventor： Sungjae Park ,  Jai-Hyun Koh ,  Yu-Kwan Kim ,  Jinpil Kim ,  Iksoo Lee ,  Namjae Lim

IPC: G09G3/20

Abstract: A display apparatus includes a display panel, a timing controller, a gate driver, and a data driver. The display panel includes a plurality of pixel groups. Each of the pixel groups includes a first pixel and a second pixel disposed adjacent to the first pixel. The first and second pixels together include n (n is an odd number equal to or greater than 3) sub-pixels. The first and second pixels share their collective {(n+1)/2}th sub-pixel.

公开(公告)号：US09715861B2

公开(公告)日：2017-07-25

申请号：US13934424

申请日：2013-07-03

Applicant: Samsung Display Co., Ltd.

Inventor： Jinpil Kim ,  Jai-Hyun Koh ,  Namjae Lim ,  Ik Soo Lee ,  Heendol Kim ,  Se Ah Kwon ,  Kisoo Park ,  Jonghak Hwang

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3607 ,  G09G3/3614

Abstract: A display device includes a display panel including gate lines which extends in a first direction, data lines which extends in a second direction, and sub-pixels connected to corresponding gate and data lines, a gate driver configured to drive the gate lines, a data driver configured to apply a gray-scale voltage to the data lines, and a timing controller configured to generate and apply control signals to the gate and data drivers, where a unit pixel of the display panel is defined by an even number of adjacent sub-pixels among the sub-pixels, each of the data lines is connected to corresponding sub-pixels of the sub-pixels, the data driver inverts a polarity of the gray-scale voltage every two data lines, and two adjacent sub-pixels in the unit pixel are applied with the gray-scale voltages having different polarities.

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.