公开(公告)号：US11423832B2

公开(公告)日：2022-08-23

申请号：US17394966

申请日：2021-08-05

Applicant: Samsung Display Co., LTD.

Inventor： Dong Joon Kwag ,  Hyung Jin Kim ,  Seok Ha Hong

IPC: G09G3/32 ,  G01J1/42

Abstract: A method of generating compensation data in a display device includes setting a pixel group including a first target pixel and first non-target pixels adjacent to the first target pixel among a plurality of pixels of a display panel; switching on the first target pixel and switching off the first non-target pixels to generate a first captured image and store the first captured image; switching on the first target pixel and the first non-target pixels to generate a second captured image and store the second captured image; switching off the first target pixel and switching on the first non-target pixels to generate a third captured image and store the third captured image; and calculating luminance correction data of the first target pixel based on the stored first to third captured images.

公开(公告)号：US10672357B2

公开(公告)日：2020-06-02

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：US09412321B2

公开(公告)日：2016-08-09

申请号：US14335146

申请日：2014-07-18

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seok Ha Hong ,  Dae-Gwang Jang ,  Gi Geun Kim ,  Sang Mi Kim ,  Ji Myoung Seo

IPC: G09G3/36

CPC classification number: G09G3/3648 ,  G09G3/3614 ,  G09G2320/0247 ,  G09G2320/0252 ,  G09G2320/103 ,  G09G2360/16

Abstract: A display device includes a display panel, a data driver, a gate driver, and a signal controller. The display panel includes a pixel connected to the gate and data lines, and the pixel includes a liquid crystal capacitor. The signal controller obtains compensation data and normal data based on input data for a still image. The signal controller apples the compensation data and normal data to the pixel during different periods of a frame. The compensation data has a value that reduces a difference of operation characteristics of liquid crystal molecules in the liquid crystal capacitor when a data voltage for the display panel changes between different polarities.

Abstract translation: 显示装置包括显示面板，数据驱动器，栅极驱动器和信号控制器。 显示面板包括连接到栅极和数据线的像素，并且像素包括液晶电容器。 信号控制器基于静止图像的输入数据获得补偿数据和正常数据。 在帧的不同时段期间，信号控制器将补偿数据和正常数据提供给像素。 当显示面板的数据电压在不同极性之间变化时，补偿数据具有减小液晶电容器中的液晶分子的操作特性的差异的值。

公开(公告)号：US20140313113A1

公开(公告)日：2014-10-23

申请号：US14023334

申请日：2013-09-10

Applicant: Samsung Display Co., Ltd.

Inventor： Dae-Gwang Jang ,  Seok Ha Hong ,  Joon-Chul Goh ,  Byung Sun Kim ,  Sang Mi Kim ,  Ji Myoung Seo

IPC: G09G3/36

CPC classification number: G09G3/3655 ,  G09G3/3614 ,  G09G2310/06 ,  G09G2320/0204

Abstract: The described technology relates to a liquid crystal display and a driving method thereof. The liquid crystal display includes a plurality of pixels arranged in a matrix form. The pixels include a liquid crystal capacitor including a pixel electrode and a common electrode as two terminals. A plurality of data lines transfer data to the plurality of pixels. The pixels include a first pixel and a second pixel, which are adjacent to each other. First and second common signals are applied to the common electrode of the first and second pixels, respectively. The second common signal is inverted to the first common signal. The first and second common signals swing between a first voltage and a second voltage. The polarity of the data voltage transferred by a data line with respect to the first common signal or the second common signal is constant during one frame.

Abstract translation: 所描述的技术涉及液晶显示器及其驱动方法。 液晶显示器包括以矩阵形式布置的多个像素。 像素包括作为两个端子的包括像素电极和公共电极的液晶电容器。 多个数据线将数据传送到多个像素。 像素包括彼此相邻的第一像素和第二像素。 第一和第二公共信号分别施加到第一和第二像素的公共电极。 第二公共信号被反转到第一公共信号。 第一和第二公共信号在第一电压和第二电压之间摆动。 数据线相对于第一公共信号或第二公共信号传输的数据电压的极性在一帧期间是恒定的。

公开(公告)号：US12073776B2

公开(公告)日：2024-08-27

申请号：US17955327

申请日：2022-09-28

Applicant: Samsung Display Co., LTD.

Inventor： Seok Ha Hong ,  Joon Chul Goh ,  Dong Joon Kwag ,  Jae Sung Bae

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/045 ,  G09G2320/048 ,  G09G2360/147 ,  G09G2360/16

Abstract: An afterimage compensator includes: a pixel data generator configured to generate characteristic data for one or more pixels from among a plurality of pixels by using a captured image; a stress accumulator configured to generate an accumulated stress for the one or more pixels in which stress corresponding to the one or more pixels is accumulated based on an image signal of a voltage domain; a domain converter configured to convert the accumulated stress for the one or more pixels from the voltage domain to accumulated stress data for the one or more pixels of a grayscale domain; and a compensator configured to generate compensation data using the characteristic data for the one or more pixels and the accumulated stress data for the one or more pixels.

公开(公告)号：US11508290B2

公开(公告)日：2022-11-22

申请号：US17328969

申请日：2021-05-24

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yun Ki Baek ,  Oh Jo Kwon ,  Bong Hyun You ,  Seok Ha Hong

IPC: G09G3/32

Abstract: A pixel according to some embodiments includes a light source unit, a first transistor coupled between a first power source and a first node, and configured to control a driving current applied to the light source unit, a first bias transistor coupled between a first bias power source and a gate electrode of the first transistor, and a second bias transistor coupled between a second bias power source and a second node that is electrically coupled to an anode of the light source unit, wherein the first bias transistor and the second bias transistor are configured to be turned on during a first period before a data voltage is applied among one frame, and wherein the second bias transistor is configured to be turned on at least once during a second period after the data voltage is applied among the one frame.

公开(公告)号：US20220059016A1

公开(公告)日：2022-02-24

申请号：US17328969

申请日：2021-05-24

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yun Ki Baek ,  Oh Jo Kwon ,  Bong Hyun You ,  Seok Ha Hong

IPC: G09G3/32

Abstract: A pixel according to some embodiments includes a light source unit, a first transistor coupled between a first power source and a first node, and configured to control a driving current applied to the light source unit, a first bias transistor coupled between a first bias power source and a gate electrode of the first transistor, and a second bias transistor coupled between a second bias power source and a second node that is electrically coupled to an anode of the light source unit, wherein the first bias transistor and the second bias transistor are configured to be turned on during a first period before a data voltage is applied among one frame, and wherein the second bias transistor is configured to be turned on at least once during a second period after the data voltage is applied among the one frame.

公开(公告)号：US11257462B2

公开(公告)日：2022-02-22

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 Chui 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：US11217180B2

公开(公告)日：2022-01-04

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：US20210335270A1

公开(公告)日：2021-10-28

申请号：US17367399

申请日：2021-07-04

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.