公开(公告)号：US12057041B2

公开(公告)日：2024-08-06

申请号：US18164933

申请日：2023-02-06

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seokha Hong ,  Joon-Chul Goh

IPC: G09G3/00

CPC classification number: G09G3/006 ,  G09G2310/0275 ,  G09G2320/041 ,  G09G2330/028 ,  G09G2330/12

Abstract: A display apparatus includes a display panel, a driving controller and a data driver. The driving controller is configured to predict a panel temperature according to a position in the display panel based on input image data, to calculate a block current of a display block of the display panel and a panel resistance according to the position in the display panel based on the panel temperature, to calculate a voltage drop according to the position in the display panel based on the block current and the panel resistance and to compensate the input image data based on the voltage drop to generate a data signal. The data driver is configured to convert the data signal to a data voltage and to output the data voltage to the display panel.

公开(公告)号：US11978394B2

公开(公告)日：2024-05-07

申请号：US17246430

申请日：2021-04-30

Applicant: Samsung Display Co., Ltd.

Inventor： Taehoon Kim ,  Soon-Dong Kim ,  Jaekeun Lim ,  Joon-Chul Goh ,  Bonghyun You

IPC: G09G3/3225 ,  H10K59/121

CPC classification number: G09G3/3225 ,  H10K59/121 ,  G09G2330/021

Abstract: A display device includes: a first partial emission driver configured to provide first emission control signals to a first partial panel area of the display panel, and a second partial emission driver configured to provide second emission control signals to a second partial panel area of the display panel; and a power management block configured to: provide a first voltage and a second voltage to the emission driver, in response to the first partial emission driver generating the first emission control signals; and provide a third voltage and a fourth voltage to the emission driver in response to the second partial emission driver generating the second emission control signals; and an emission control block configured to receive the first voltage and the second voltage from the power management block and to provide a first clock signal and a second clock signal to the emission driver.

公开(公告)号：US11875729B2

公开(公告)日：2024-01-16

申请号：US17813379

申请日：2022-07-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seokha Hong ,  Joon-Chul Goh ,  Jaesung Bae

IPC: G09G3/20 ,  G01K7/16 ,  G09G3/00 ,  G09G3/3233

CPC classification number: G09G3/2096 ,  G01K7/16 ,  G09G3/006 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2330/021 ,  G09G2330/12

Abstract: A display device includes a display panel including a panel region. The panel region includes a block, and the block includes a pixel. The display device further includes a temperature sensor sensing a region temperature of the panel region and a temperature estimator estimating a temperature of the display panel. The temperature estimator includes a stress calculator calculating an accumulated stress value corresponding to the block based on input image data, a temperature potential calculator calculating a temperature potential corresponding to the block based on the accumulated stress value and a resistance model related to a heat diffusion within the display panel, and a temperature calculator calculating a block temperature based on the region temperature and the temperature potential. The temperature of the display panel is estimated based on the block temperature.

公开(公告)号：US11847947B2

公开(公告)日：2023-12-19

申请号：US17893585

申请日：2022-08-23

Applicant: Samsung Display Co., Ltd.

Inventor： Yunki Baek ,  Joon-Chul Goh

IPC: G09G3/00 ,  G01B7/16 ,  G09G3/20

CPC classification number: G09G3/035 ,  G01B7/18 ,  G09G3/2007 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2330/021

Abstract: A flexible display device includes: a flexible display panel including a plurality of pixels, a power supply line coupled to the plurality of pixels, and at least one measuring line; a power management circuit, which supplies a power supply voltage to the plurality of pixels through the power supply line; and a display driver, which drives the flexible display panel. The display driver senses a resistance of the at least one measuring line, and detects at least one of a deformation position and a deformation amount of the flexible display panel based on the sensed resistance.

公开(公告)号：US11682334B2

公开(公告)日：2023-06-20

申请号：US17863083

申请日：2022-07-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seokha Hong ,  Joon-Chul Goh ,  Dongjoon Kwag ,  Jaesung Bae ,  Young-Soo Hwang

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G3/2096 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/0626

Abstract: A driving controller includes: a grayscale determiner, which determines a current grayscale of input image data, a deterioration time determiner, which determines a first deterioration time for the current grayscale corresponding to an accumulated deterioration degree, a current deterioration degree calculator, which calculates a second deterioration time by summing the first deterioration time and a calculation period, and calculates a current deterioration degree for the current grayscale according to the second deterioration time, and an image compensator, which compensates the input image data based on the current deterioration degree.

公开(公告)号：US20230186807A1

公开(公告)日：2023-06-15

申请号：US18164933

申请日：2023-02-06

Applicant: SAMSUNG DISPLAY CO.,LTD.

Inventor： SEOKHA HONG ,  Joon-Chul Goh

IPC: G09G3/00

CPC classification number: G09G3/006 ,  G09G2320/041 ,  G09G2330/028 ,  G09G2310/0275 ,  G09G2330/12

Abstract: A display apparatus includes a display panel, a driving controller and a data driver. The driving controller is configured to predict a panel temperature according to a position in the display panel based on input image data, to calculate a block current of a display block of the display panel and a panel resistance according to the position in the display panel based on the panel temperature, to calculate a voltage drop according to the position in the display panel based on the block current and the panel resistance and to compensate the input image data based on the voltage drop to generate a data signal. The data driver is configured to convert the data signal to a data voltage and to output the data voltage to the display panel.

公开(公告)号：US11386852B2

公开(公告)日：2022-07-12

申请号：US16922906

申请日：2020-07-07

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Joon-Chul Goh ,  Sangan Kwon ,  HongSoo Kim ,  Hui Nam ,  Jinyoung Roh ,  Hyojin Lee

IPC: G09G3/36 ,  G09G3/3291 ,  G09G3/3266

Abstract: A display device includes a display panel including a first partial panel region and a second partial panel region, and a panel driver configured to drive the display panel. The panel driver determines a first driving frequency for the first partial panel region and a second driving frequency for the second partial panel region. When the first driving frequency and the second driving frequency are different from each other, the panel driver sets a boundary portion including a boundary between the first partial panel region and the second partial panel region, and determines a third driving frequency for the boundary portion to be between the first driving frequency and the second driving frequency.

公开(公告)号：US10078011B2

公开(公告)日：2018-09-18

申请号：US15623045

申请日：2017-06-14

Applicant: Samsung Display Co., LTD.

Inventor： Joon-Chul Goh ,  Jae-Keun Lim

IPC: G06F3/038 ,  G01J1/46 ,  G06F3/041 ,  H01L27/32 ,  G01J1/44

CPC classification number: G01J1/46 ,  G01J2001/444 ,  G01J2001/4473 ,  G06F3/0412 ,  H01L27/3227 ,  H01L27/3234

Abstract: A light sensitive circuit includes a light sensing capacitor and a driving transistor. The light sensing capacitor is configured to sense light of a predetermined one or more wavelengths. The driving transistor includes a gate electrode electrically connected to the light sensing capacitor and is configured to generate a light sensing current according to a voltage of the gate electrode in the driving transistor. A light sensing accuracy and a light sensing signal to noise ratio (SNR) of the display apparatus including a plurality of such light sensing capacitors may be improved relative to ones that do not include such light sensing capacitors.

公开(公告)号：US09972246B2

公开(公告)日：2018-05-15

申请号：US14609352

申请日：2015-01-29

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dong-Won Park ,  Joon-Chul Goh ,  Seok-Ha Hong

IPC: G09G3/3258 ,  G09G3/3233 ,  H01L27/32

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2360/148 ,  H01L27/3269

Abstract: Provided is a pixel including an organic light emitting diode, a driving circuit, and a light receiving circuit. The driving circuit is configured to supply a driving current corresponding to a data signal supplied through a data line during a scan period to the organic light emitting diode during an emission period, and to supply a first sensing current corresponding to threshold voltage/mobility information of a driving transistor or degradation information of the organic light emitting diode to a feedback line during a current sensing period. The light receiving circuit is configured to supply a second sensing current corresponding to luminance of the organic light emitting diode to the feedback line during the emission period.

公开(公告)号：US09805673B2

公开(公告)日：2017-10-31

申请号：US14161577

申请日：2014-01-22

Applicant: Samsung Display Co., Ltd.

Inventor： Dong-Hwa Shin ,  Joon-Chul Goh ,  Won-Sik Oh ,  Hyun-Sik Hwang ,  Bong-Hyun You

IPC: G09G3/36

CPC classification number: G09G3/3648 ,  G09G2300/0814

Abstract: A method of driving a display panel is disclosed. In one aspect, the display panel includes a plurality of pixels, each of the pixels including a first transistor connected to a first gate line and a pixel electrode and a second transistor connected to a second gate line and the pixel electrode. The method including alternately providing the first gate line with a gate signal and a reverse bias signal and alternately providing the second gate line with the gate signal when the first gate line is provided with the reverse bias signal and the reverse bias signal when the first gate line is provided with the gate signal.