公开(公告)号：US20180350300A1

公开(公告)日：2018-12-06

申请号：US15870378

申请日：2018-01-12

Applicant: Samsung Display Co., Ltd.

Inventor： Jong Won Park ,  Won Kyu Kwak ,  Seung Kyu Lee

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

Abstract: An organic light emitting display device includes a pixel, a data line, a first scan line, a second scan line, and a scan driver. The pixel includes a first transistor, a second transistor, and a third transistor. A source of the first transistor is electrically connected to a drain of the third transistor. A source of the second transistor is configured to receive an initialization voltage. The data line is electrically connected to a source of the third transistor and may transmit a data voltage higher than the initialization voltage. The first scan line is electrically connected to a gate of the third transistor. The second scan line is electrically connected to a gate of the second transistor. The scan driver may provide an initializing scan signal to the second scan line at least two horizontal periods before providing an initial scan signal to the first scan line.

公开(公告)号：US10008168B2

公开(公告)日：2018-06-26

申请号：US15097475

申请日：2016-04-13

Applicant: Samsung Display Co. Ltd.

Inventor： Wan Namgung ,  Ik Han Oh ,  Ho Jun Lee ,  Youn Hak Jeong ,  Seung Kyu Lee ,  Mi Hyeon Jo

IPC: G09G3/36 ,  G02F1/1362 ,  G09G3/20 ,  G02F1/1343 ,  G02F1/1337

CPC classification number: G09G3/3648 ,  G02F1/133707 ,  G02F1/13624 ,  G02F2001/134318 ,  G02F2001/134345 ,  G09G3/2074 ,  G09G3/3614

Abstract: A liquid crystal display includes a pixel electrode which includes a first subpixel electrode and a second subpixel electrode, a first insulating substrate and a second insulating substrate which faces the first insulating substrate, a common electrode which overlaps the pixel region, where the first subpixel electrode includes a first main unit electrode and a first sub unit electrode which is electrically connected to the first main unit electrode and smaller in area than the first main unit electrode, the second subpixel electrode includes a second main unit electrode, and a first opening part which overlaps the first main unit electrode, a second opening part which overlaps the second main unit electrode, and a third opening part which overlaps the first sub unit electrode and has a different shape from those of the first opening part and the second opening part are defined in the common electrode.

公开(公告)号：US11996048B2

公开(公告)日：2024-05-28

申请号：US18143071

申请日：2023-05-04

Applicant: Samsung Display Co., Ltd.

Inventor： Se Byung Chae ,  Seung Kyu Lee

IPC: G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0214 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A display device includes a display panel including pixels coupled to a first scan line and a data line, a power supply to supply voltages, a scan driver to provide a first scan signal to the first scan line a plurality of times for a first frame period (FFP), a data driver to supply a data signal to the data line, and a timing controller to control driving of components. The FFP includes: a first active period (FAP), in which the data signal is supplied; and a first blank period (FBP), in which the data signal is not supplied. The power supply provides on-bias power having a first voltage level (FVL) in the FAP, and provides on-bias power having a second voltage level (SVL) in the FBP. The FBP following the FAP includes a first dimming period in which the on-bias power gradually changes from the FVL to the SVL.

公开(公告)号：US11922883B2

公开(公告)日：2024-03-05

申请号：US18063203

申请日：2022-12-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jin Tae Jeong ,  Min Ku Lee ,  Ji Hyun Ka ,  Tae Hoon Kwon ,  Seung Kyu Lee ,  Seung Ji Cha

IPC: G09G3/3258 ,  G09G3/3225 ,  H10K59/123

CPC classification number: G09G3/3258 ,  G09G3/3225 ,  H10K59/123 ,  G09G2300/0819 ,  G09G2310/0216 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/0214 ,  G09G2320/0238 ,  G09G2320/045

Abstract: A pixel includes an organic light emitting diode (OLED), a pixel circuit, and first and second transistors. The OLD includes a cathode electrode connected to a second power source. The pixel circuit includes a driving transistor having a gate electrode initialized by a third power source. The driving transistor controls the amount of current flowing from a first power source to the second power source via the OLED. The first transistor is connected between a fourth power source and the second power source and an anode electrode of the OLED. The first transistor is turned on based on a scan signal is supplied to a scan line. The second transistor is connected between a data line and the pixel circuit. The second transistor is turned on when the scan signal is supplied to the ith scan line.

公开(公告)号：US20230290308A1

公开(公告)日：2023-09-14

申请号：US18143071

申请日：2023-05-04

Applicant: Samsung Display Co., Ltd.

Inventor： Se Byung Chae ,  Seung Kyu Lee

IPC: G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0214 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A display device includes a display panel including pixels coupled to a first scan line and a data line, a power supply to supply voltages, a scan driver to provide a first scan signal to the first scan line a plurality of times for a first frame period (FFP), a data driver to supply a data signal to the data line, and a timing controller to control driving of components. The FFP includes: a first active period (FAP), in which the data signal is supplied; and a first blank period (FBP), in which the data signal is not supplied. The power supply provides on-bias power having a first voltage level (FVL) in the FAP, and provides on-bias power having a second voltage level (SVL) in the FBP. The FBP following the FAP includes a first dimming period in which the on-bias power gradually changes from the FVL to the SVL.

公开(公告)号：US11688342B2

公开(公告)日：2023-06-27

申请号：US17567767

申请日：2022-01-03

Applicant: Samsung Display Co., Ltd.

Inventor： Tae Hoon Kim ,  Ji Hyun Ka ,  Seung Kyu Lee

IPC: G09G3/30 ,  G09G3/3233 ,  H01L27/32 ,  H01L29/786 ,  H01L27/12

CPC classification number: G09G3/3233 ,  H01L27/3262 ,  H01L27/3265 ,  H01L27/3276 ,  G09G2300/0417 ,  G09G2300/0426 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0214 ,  G09G2320/0219 ,  G09G2320/0233 ,  G09G2330/028 ,  H01L27/124 ,  H01L27/1225 ,  H01L27/1255 ,  H01L29/7869 ,  H01L29/78672

Abstract: The present disclosure relates to a pixel displaying an image. A pixel includes an organic light emitting diode, a first transistor controlling an amount of current flowing from a first driving power supply to a second driving power supply via the organic light emitting diode in response to a voltage of a first node; a storage capacitor connected between the first node and the first driving power supply; a second transistor connected between a data line and the first node and turned on when a scan signal is supplied to a first scan line, and an auxiliary transistor connected between the second transistor and the data line and turned on when a scan signal is supplied to a second scan line. The second transistor and the auxiliary transistor have an overlapping turn-on period, and the second transistor is turned off before the auxiliary transistor is turned off.

公开(公告)号：US11640788B2

公开(公告)日：2023-05-02

申请号：US17407412

申请日：2021-08-20

Applicant: Samsung Display Co., Ltd.

Inventor： Seung Kyu Lee ,  Seung Ji Cha ,  Ji Hyun Ka ,  Tae Hoon Kwon ,  Min Ku Lee ,  Jin Tae Jeong

IPC: G09G3/3225 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3208

Abstract: A stage including: an output circuit connected to a first node and a second node; an input connected to a third node and a fourth node; and a plurality of signal processors between the output and the input, the plurality of signal processors electrically connecting the first node and the third node and electrically connecting the second node and the fourth node, wherein the input includes: a seventh transistor connected between a first input terminal and the fourth node and having a gate electrode connected to a second input terminal; a plurality of eighth transistors serially connected between the third node and the second input terminal and having gate electrodes connected to the fourth node; and a ninth transistor connected between the third node and a second power source and having a gate electrode connected to the second input terminal.

公开(公告)号：US11501694B2

公开(公告)日：2022-11-15

申请号：US17248443

申请日：2021-01-25

Applicant: Samsung Display Co., Ltd.

Inventor： Si Beak Pyo ,  Seung Kyu Lee ,  Young Uk Hwang

IPC: G09G3/32

Abstract: A display device includes: a plurality of pixels to receive data voltages based on converted grayscales; and a grayscale converter to: calculate first compensation offsets based on positions of the pixels and input grayscales for the pixels; convert the first compensation offsets into second compensation offsets according to a maximum luminance weight based on an input maximum luminance; and calculate the converted grayscales by applying the second compensation offsets to the input grayscales.

公开(公告)号：US11443687B2

公开(公告)日：2022-09-13

申请号：US17242818

申请日：2021-04-28

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Min Seong Son ,  Seung Kyu Lee ,  Sun Joon Hwang ,  Yun Seong Kim ,  Youn Woo Choe

IPC: G09G3/32

Abstract: A display device includes a pixel including a first transistor coupled between a first node and a second node, an emission driver supplying an emission control signal at a first frequency to an emission control line, a scan driver supplying first to fourth scan signals respectively to first to fourth scan lines, a data driver supplying a data signal to a data line, and a timing controller. The first scan signal controls a timing at which a voltage of a first power source is supplied to the first node or the second node, and the second scan signal controls a timing at which a first electrode of the first transistor and a gate electrode of the first transistor are coupled to each other. The scan driver controls a bias state of the first transistor by supplying, plural times, the first and second scan signals in a non-emission period.

公开(公告)号：US11282432B2

公开(公告)日：2022-03-22

申请号：US16732744

申请日：2020-01-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Si Beak Pyo ,  Seung Kyu Lee ,  Hyun Jung Son ,  Yoon Gyu Lee

IPC: G09G5/10 ,  G09G3/20

Abstract: A display device includes a processor and a display panel for receiving observation grayscale values from the processor. The display panel includes a data driver for applying data voltages to data lines, a target pixel coupled to at least one of the data lines, and observation pixels each coupled to at least one of the data lines, and located adjacent to the target pixel. The display panel applies a first data voltage to the target pixel, when the observation grayscale values for the observation pixels exceed a reference value. The display panel applies a second data voltage to the target pixel, when at least one of the observation grayscale values does not exceed the reference value. The first data voltage and the second data voltage are different from each other.