公开(公告)号：US20220130346A1

公开(公告)日：2022-04-28

申请号：US17319833

申请日：2021-05-13

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Ha HONG ,  Dong Joon KWAG

IPC: G09G5/10

Abstract: A method for compensating luminance of a display device according to some embodiments of the present disclosure includes capturing an image of the display device, generating imaging data, primarily mapping display pixels of the display device and the imaging data so that a unit mapping area corresponding to the display pixels includes luminance values for image pixels of an imaging device, setting an offset value of the imaging data with respect to the display pixels so that a maximum luminance value among the luminance values is positioned at a center of the unit mapping area, secondarily mapping the imaging data according to the offset value with respect to the display pixels, calculating a representative luminance value, and setting a luminance correction value corresponding to the representative luminance value with respect to one of the display pixels.

公开(公告)号：US20200066211A1

公开(公告)日：2020-02-27

申请号：US16427359

申请日：2019-05-31

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon LEE ,  Kuk Hwan AHN ,  Seok Ha HONG

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

Abstract: An nth (where n is a natural number) stage is included in a scan driver of a display. The nth stage includes: a first input circuit for controlling a voltage of a first node in response to a carry signal of a previous stage; a second input circuit for controlling the voltage of the first node in response to a carry signal of a next stage; a first control circuit for controlling a voltage of an output terminal in response to the carry signal of the next stage; an output circuit for outputting an nth scan signal and an nth carry signal in response to the voltage of the first node and a voltage of a second node; and a leakage control circuit for supplying a control voltage to the first input circuit and the second input circuit in response to one of the nth scan signal and the nth carry signal.

公开(公告)号：US20240144860A1

公开(公告)日：2024-05-02

申请号：US18242091

申请日：2023-09-05

Applicant: Samsung Display Co., LTD.

Inventor： Seok Ha HONG ,  Hyung Jin KIM ,  Kyung Su LEE

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0465 ,  G09G2300/0842 ,  G09G2330/021

Abstract: A display device includes: a memory; a pixel unit including first pixels disposed with a first density in a first area and second pixels disposed with a second density smaller than the first density in a second area in contact with the first area; and a degradation compensator which updates degradation information stored in the memory, based on input grayscales for the first and second pixels, and changes the input grayscales to output grayscales, based on the degradation information. The degradation compensator stores the degradation information in the memory in a unit of block for the pixel unit. The memory stores only first degradation information for each of first blocks including only the first pixels, stores only second degradation information for each of second blocks including only the second pixels, and stores the first and second degradation information for each of third blocks including both the first and second pixels.

公开(公告)号：US20210125577A1

公开(公告)日：2021-04-29

申请号：US16928463

申请日：2020-07-14

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Ha HONG ,  Dong Joon KWAG ,  Hyung Jin KIM ,  Ji-Eun PARK ,  Hye-Sang PARK ,  Hyun Seuk YOO ,  Hee Chul HWANG

IPC: G09G5/02

Abstract: In a method of generating compensation data for a display device, first color, second color, and third color compensation value sets may be obtained by capturing first color, second color, and third color images displayed by the display device, respectively, white, first color, second color, and third color loading luminances may be obtained by capturing white, first color, second color, and third color loading patterns displayed by the display device, respectively, first color, second color, and third color scale factors may be calculated by dividing a luminance decrease ratio of the white loading luminance by luminance decrease ratios of the first color, second color, and third color loading luminances, respectively, and the first color, second color, and third color compensation value sets and the first color, second color, and third color scale factors may be stored in the display device.

公开(公告)号：US20160275852A1

公开(公告)日：2016-09-22

申请号：US15075835

申请日：2016-03-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seok Ha HONG ,  Dae-Gwang JANG ,  Byung Sun KIM ,  Sang Mi KIM ,  Ung Gyu MIN ,  Hyun Sik HWANG ,  Gi Geun KIM ,  Kyoung Won LEE

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G3/2003 ,  G09G3/3648 ,  G09G3/3696 ,  G09G2310/04 ,  G09G2320/0247 ,  G09G2320/103 ,  G09G2340/0435

Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.

Abstract translation: 控制器控制显示装置的驱动频率和电压。 如果图像数据对应于运动图像，则控制器以运动图像频率驱动数据驱动器和栅极驱动器。 如果图像数据对应于静止图像，则以比运动图像频率更低的静止图像频率驱动数据驱动器和栅极驱动器。 当要显示静止图像时，信号控制器还基于图像数据的代表值来控制像素的薄膜晶体管的泄漏电流，使得为正数据电压施加的正的漏电流等于负泄漏 电流施加负数据电压。

公开(公告)号：US20140313181A1

公开(公告)日：2014-10-23

申请号：US14146792

申请日：2014-01-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seok Ha HONG ,  Dae-Gwang JANG ,  Byung Sun KIM ,  Sang Mi KIM ,  Ung Gyu MIN ,  Hyun Sik HWANG ,  Gi Geun KIM ,  Kyoung Won LEE

IPC: G09G3/36

CPC classification number: G09G3/2092 ,  G09G3/2003 ,  G09G3/3648 ,  G09G3/3696 ,  G09G2310/04 ,  G09G2320/0247 ,  G09G2320/103 ,  G09G2340/0435

Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.

Abstract translation: 控制器控制显示装置的驱动频率和电压。 如果图像数据对应于运动图像，则控制器以运动图像频率驱动数据驱动器和栅极驱动器。 如果图像数据对应于静止图像，则以比运动图像频率更低的静止图像频率驱动数据驱动器和栅极驱动器。 当要显示静止图像时，信号控制器还基于图像数据的代表值来控制像素的薄膜晶体管的泄漏电流，使得为正数据电压施加的正的漏电流等于负泄漏 电流施加负数据电压。

公开(公告)号：US20210166634A1

公开(公告)日：2021-06-03

申请号：US16999779

申请日：2020-08-21

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Ha HONG

IPC: G09G3/3275

Abstract: A display device includes: a display panel including a plurality of pixels; a power supply configured to provide a power supply voltage to the display panel; and a controller configured to control the power supply, the controller including: a motion calculation block configured to calculate a motion amount of image data based on the image data in a previous frame and the image data in a current frame, and to determine a motion gain based on the motion amount of the image data; a maximum gray determination block configured to determine a maximum gray level of the image data in the current frame; a voltage drop calculation block configured to calculate a voltage drop amount in the display panel; and a power supply voltage determination block configured to determine an initial voltage level of the power supply voltage.

公开(公告)号：US20180130435A1

公开(公告)日：2018-05-10

申请号：US15801951

申请日：2017-11-02

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon LEE ,  Soo-Yeon LEE ,  Seok Ha HONG ,  Bong Hyun YOU ,  Jai-Hyun KOH

IPC: G09G3/36

Abstract: A stage of a gate driving circuit includes: a first control transistor diode-connected between a first input end of the stage and a first node, biased by a first input signal, and back-biased by a second input signal; a second control transistor including a control end which receives a third input signal, a first end connected to the first node, and a second end connected to a first voltage, and back-biased by a fourth input signal; a first output transistor including a control end connected to the first node, a first end connected to a clock input end of the stage, and a second end connected to a first output end of the stage; and a capacitor connected between the control and second ends of the first output transistor. The second input signal and the fourth input signal have enable levels during different periods.

公开(公告)号：US20150221273A1

公开(公告)日：2015-08-06

申请号：US14294918

申请日：2014-06-03

Applicant: Samsung Display Co. Ltd.

Inventor： Sang Ik LEE ,  Young Soo YOON ,  Joon Chul GOH ,  In Jae HWANG ,  Byung Sun KIM ,  Dae Gwang JANG ,  Seok Ha HONG

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3655 ,  G09G3/3677 ,  G09G2310/0205 ,  G09G2320/0209 ,  G09G2320/0219 ,  G09G2320/0233

Abstract: A liquid crystal display device includes a plurality of pixels arranged substantially in a matrix form, where a part of the plurality of pixels defines a pixel column block, a first scan signal is simultaneously applied to an n-th row pixel and an (n+2)-th row pixel of the pixel column block, a second scan signal, which is applied prior to the first scan signal, is simultaneously applied to an (n+1)-th row pixel and an (n+3)-th row pixel of the pixel column block, a first data voltage is applied to the n-th row pixel and the (n+1)-th row pixel, a second data voltage having a polarity different from a polarity of the first data voltage is applied to the (n+2)-th row pixel and the (n+3)-th row pixel, and the polarities of the first data voltage and the second data voltage are inverted on a frame-by-frame basis.

Abstract translation: 液晶显示装置包括基本上以矩阵形式布置的多个像素，其中多个像素的一部分限定像素列块，第一扫描信号同时施加到第n行像素，并且第（n + 在第（n + 1）行像素和第（n + 3）像素上同时施加在第一扫描信号之前施加的第二扫描信号， 像素列块的行像素，对第n行像素和第（n + 1）行像素施加第一数据电压，具有与第一数据电压的极性不同的极性的第二数据电压为 施加到第（n + 2）行像素和第（n + 3）行像素，并且逐帧地反转第一数据电压和第二数据电压的极性。

公开(公告)号：US20140022220A1

公开(公告)日：2014-01-23

申请号：US13691365

申请日：2012-11-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyoung Won LEE ,  Seung Seok NAM ,  Cheol Woo PARK ,  Kyoung Ho LIM ,  Dae-Gwang JANG ,  Gi Geun KIM ,  Eun Ho LEE ,  Ung Gyu MIN ,  Seok Ha HONG

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2320/103 ,  G09G2340/0435 ,  G09G2360/16

Abstract: A display device including: a display panel; and a signal controller which controls signals for driving the display panel, where the signal controller includes a representative value generator which sequentially operates a portion of image data of one frame, where the representative value generator moves a last position digit into another position digit of the portion of the image data and generates a representative value representing a portion of a frame image corresponding to the portion of the image data; a storage portion which stores the representative value therein; and a comparator which compares the representative values of present and prior frames to determine whether the portion of the frame image is a still image or a motion picture, and the signal controller controls the signals for driving the display panel such that a driving frequency for the still image is lower than a driving frequency for the motion picture.

Abstract translation: 一种显示装置，包括：显示面板; 以及信号控制器，其控制用于驱动显示面板的信号，其中信号控制器包括代表值发生器，其顺序地操作一帧的图像数据的一部分，其中代表值发生器将最后位置数字移动到另一位置数位 并且生成表示对应于图像数据的一部分的帧图像的一部分的代表值; 在其中存储代表值的存储部分; 以及比较器，其比较当前帧和现有帧的代表值，以确定帧图像的部分是静止图像还是运动图像，并且信号控制器控制用于驱动显示面板的信号，使得用于 静止图像低于运动图像的驱动频率。