公开(公告)号：US12142174B2

公开(公告)日：2024-11-12

申请号：US18230539

申请日：2023-08-04

Applicant: Samsung Display Co., LTD.

Inventor： Seongjoo Lee ,  Joon-Chul Goh ,  Ohjo Kwon

IPC: G09G3/00 ,  G09G3/20 ,  G09G3/3233

Abstract: A display device includes: a display panel including a normal pixel in a display region and a test pixel in a peripheral region, a sensing line coupled to the test pixel, and a sensing circuit configured to sense a mobility characteristic of the test pixel by measuring a current at a source node of the test pixel through the sensing line. The source node of the test pixel is electrically separated from the sensing line in a data writing period of a frame period, and is electrically coupled to the sensing line in an emission period of the frame period.

公开(公告)号：US11955081B2

公开(公告)日：2024-04-09

申请号：US16988643

申请日：2020-08-08

Applicant: Samsung Display Co., Ltd.

Inventor： Hyo Jin Lee ,  Joon-Chul Goh ,  Sangan Kwon ,  Hong Soo Kim ,  Hui Nam ,  Jin Young Roh ,  Sehyuk Park

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2330/021

Abstract: A pixel includes: a storage capacitor connected between a first power supply voltage and a gate node; a first transistor including a gate electrode connected to the gate node; a second transistor to transfer a data signal to a source of the first transistor in response to a scan signal; a third transistor to diode-connect the first transistor in response to the scan signal, and including first and second sub-transistors serially connected between the gate node and a drain of the first transistor; a fourth transistor to transfer an initialization voltage to the gate node in response to an initialization signal, and including third and fourth sub-transistors serially connected between the gate node and the initialization voltage; and an organic light emitting diode including a cathode connected to a second power supply voltage. At least one of the second and fourth sub-transistors includes a bottom electrode.

公开(公告)号：US11915659B2

公开(公告)日：2024-02-27

申请号：US17871379

申请日：2022-07-22

Applicant: Samsung Display Co., Ltd.

Inventor： Kanghee Lee ,  Joon-Chul Goh ,  Weonjun Choe

IPC: G09G3/3275 ,  G09G3/3291 ,  G09G3/3233 ,  G09G3/3241

CPC classification number: G09G3/3275 ,  G09G3/3291 ,  G09G3/3233 ,  G09G3/3241 ,  G09G2300/0842 ,  G09G2310/0297 ,  G09G2320/0242 ,  G09G2320/0252 ,  G09G2330/021

Abstract: A display device includes a display panel including a pixel, a driving controller that receives an image signal and outputs an image data signal in which the image signal is compensated, and a data driving circuit that provides the pixel with a data signal corresponding to the image data signal. The driving controller includes a memory, a hysteresis calculator that calculates a current hysteresis state value of a current frame based on the image signal and a previous hysteresis state value of a previous frame, which is stored in the memory, and stores the current hysteresis state value in the memory, and a compensator that calculates a compensation value based on the image signal and the previous hysteresis state value stored in the memory and compensates for the image signal depending on the compensation value to output the image data signal.

公开(公告)号：US11887538B2

公开(公告)日：2024-01-30

申请号：US17938693

申请日：2022-10-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seongheon Cho ,  Joon-Chul Goh ,  Soon-Dong Kim ,  Bonghyun You

IPC: G09G3/3233 ,  G09G3/3283 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2310/08 ,  G09G2320/0626 ,  G09G2330/023

Abstract: A light emission driving circuit includes a driving circuit configured to output a light emission driving signal to a first output terminal and output a switching signal to a first node in response to clock signals and a first carry signal, and a first masking circuit configured to output a second carry signal to a second output terminal in response to a masking clock signal, the light emission driving signal, and the first switching signal. The masking clock signal is a signal which is maintained at a first level during a normal mode and periodically changes during a low power mode.

公开(公告)号：US20230040896A1

公开(公告)日：2023-02-09

申请号：US17938693

申请日：2022-10-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SEONGHEON CHO ,  Joon-Chul Goh ,  Soon-Dong Kim ,  Bonghyun You

IPC: G09G3/3233 ,  G09G3/3283 ,  G09G3/3266

Abstract: A light emission driving circuit includes a driving circuit configured to output a light emission driving signal to a first output terminal and output a switching signal to a first node in response to clock signals and a first carry signal, and a first masking circuit configured to output a second carry signal to a second output terminal in response to a masking clock signal, the light emission driving signal, and the first switching signal. The masking clock signal is a signal which is maintained at a first level during a normal mode and periodically changes during a low power mode.

公开(公告)号：US20230005417A1

公开(公告)日：2023-01-05

申请号：US17731187

申请日：2022-04-27

Applicant: Samsung Display Co., Ltd.

Inventor： DONG WON LEE ,  Byung Ki Chun ,  Joon-Chul Goh ,  Bonghyun You

IPC: G09G3/32

Abstract: A display device includes a display panel including a plurality of pixels respectively connected to a plurality of data lines and a plurality of scan lines, a data driving circuit for driving the plurality of data lines, a scan driving circuit for driving the plurality of scan lines, and a driving controller for receiving a control signal and an image signal and controlling the data driving circuit and the scan driving circuit such that an image is displayed on the display panel. The driving controller identifies a first region and a second region of an image to be displayed on the display panel based on the image signal and provides the data driving circuit with an image data signal obtained by compensating for the image signal to be provided to pixels adjacent to the second region among pixels corresponding to the first region as a compensation value.

公开(公告)号：US20210183298A1

公开(公告)日：2021-06-17

申请号：US17189557

申请日：2021-03-02

Applicant: Samsung Display Co., Ltd.

Inventor： Mun-San Park ,  Joon-Chul Goh ,  Woo-Mi Bae ,  Kyoung-Won Lee

IPC: G09G3/20

Abstract: A display apparatus includes a display panel and a timing controller. The timing controller generates first output image data based on input image data and sets a driving frequency of the display panel as a first frequency in a first operation mode. The timing controller converts the input image data into second output image data and sets the driving frequency of the display panel as a second frequency lower than the first frequency in a second operation mode. The display panel displays a first image based on the first frequency and the first output image data in the first operation mode. The first image is represented by X grayscales. The display panel displays a second image based on the second frequency and the second output image data in the second operation mode. The second image is represented by Y grayscales, where Y is less than X.

公开(公告)号：US10460640B2

公开(公告)日：2019-10-29

申请号：US15155624

申请日：2016-05-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Young-Soo Yoon ,  Joon-Chul Goh ,  Sang-Ik Lee

IPC: G09G5/06 ,  G09G3/20 ,  G09G3/3275 ,  G09G3/36 ,  G09G5/02

Abstract: A display apparatus may include a display timing controller and a display panel. The display timing controller generates first output image data based on first input image data and a first gamma function, and generates second output image data based on second input image data and a second gamma function. The display panel operates based on the first output image data during a first duration, and operates based on the second output image data during a second duration subsequent to the first duration. The first and second gamma functions correspond to a first region of the display panel, and a luminance of an image based on the first gamma function is different from a luminance of an image based on the second gamma function.

公开(公告)号：US10388242B2

公开(公告)日：2019-08-20

申请号：US16040023

申请日：2018-07-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung-Taek Kim ,  Joon-Chul Goh ,  Sang-Ik Lee ,  Kyoung-Ho Lim

IPC: G09G3/36

Abstract: A display apparatus includes a display panel and a first gate driver. The display panel includes a plurality of data lines extending in a first direction, and a plurality of gate lines extending in a second direction obliquely inclined toward the first direction and spaced apart from each other in a third direction crossing the second direction. The plurality of gate lines includes a first gate line group and a second gate line group respectively disposed in first and second display areas of the display panel. The first gate driver is configured to drive at least one gate line of the second gate line group while driving at least one gate line of the first gate line group.

公开(公告)号：US10083647B2

公开(公告)日：2018-09-25

申请号：US14569363

申请日：2014-12-12

Applicant: Samsung Display Co., Ltd.

Inventor： Dong-Gyu Lee ,  Joon-Chul Goh ,  Sang-Ik Lee

IPC: G09G3/20 ,  G09G3/36

CPC classification number: G09G3/2074 ,  G09G3/3637 ,  G09G2320/0276 ,  G09G2320/0673 ,  G09G2320/106

Abstract: A display apparatus includes a display panel comprising a data line, a gate line crossing the data line and a sub pixel connected to the data line and the gate line, a moving vector extractor configured to extract a moving vector of an input image using input data, a data generator configured to generate data of a high gamma curve called “high data” and data of a low gamma curve called “low data” corresponding to the input data using a spatiotemporal sequential pattern based on moving direction and moving speed of the moving vector, and a data driver circuit configured to covert the high data and the low data of the input data into a data voltage and provide the data line with the data voltage.