公开(公告)号：US11776480B2

公开(公告)日：2023-10-03

申请号：US17860676

申请日：2022-07-08

Applicant: Samsung Display Co., Ltd.

Inventor： Min Jae Jeong ,  Jang Mi Kang ,  Hyeong Seok Kim ,  Jun Hyun Park ,  Mu Kyung Jeon

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G3/3233

CPC classification number: G09G3/3258 ,  G09G3/3266 ,  G09G3/3233 ,  G09G3/3291 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0238 ,  G09G2320/0247 ,  G09G2320/0257 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/02

Abstract: A pixel includes a light emitting element, a first transistor connected between first and second nodes and that generates a driving current flowing from a first power line to a second power line through the light emitting element, a second transistor connected between a data line and the first node and turned on in response to a fourth scan signal, a third transistor connected between the second node and a third node corresponding to a gate electrode of the first transistor and turned on in response to a second scan signal, a fourth transistor connected between the third node and a third power line providing a third power voltage and turned on in response to a first scan signal, and a fifth transistor connected between the first and fourth nodes and turned on in response to a fifth scan signal.

公开(公告)号：US20230298502A1

公开(公告)日：2023-09-21

申请号：US17960868

申请日：2022-10-06

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon LEE ,  Byoung Kwan AN

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/3291

CPC classification number: G09G3/2007 ,  G09G3/3233 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2320/043 ,  G09G2360/16 ,  G09G2320/0257

Abstract: A display device includes a pixel, a deterioration compensator, and a data driver. The pixel includes a light emitting element. The deterioration compensator records a deterioration amount of the pixel in response to an input grayscale, determines a change amount of a driving voltage of the light emitting element based on the deterioration amount and the input grayscale, and generates adjusted data by calculating an adjustment amount based on the change amount of the driving voltage of the light emitting element. The data driver supplies a data voltage corresponding to the adjusted data to the pixel. The change amount of the driving voltage of the light emitting element varies according to the input grayscale.

公开(公告)号：US20230282164A1

公开(公告)日：2023-09-07

申请号：US17961098

申请日：2022-10-06

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2330/021 ,  G09G2310/08 ,  G09G2320/0257

Abstract: A pixel includes a first switching transistor, a second switching transistor, a driving transistor, and a light emitting element. The first switching transistor includes a first terminal to which a bias power supply voltage is applied, a second terminal connected to a first node, and a gate terminal to which a light emitting element initialization signal is applied. The second switching transistor includes a first terminal connected to the first node, a second terminal connected to a second node, and a gate terminal to which the light emitting element initialization signal is applied. The driving transistor includes a first terminal connected to the second node, a second terminal connected to a third node, and a gate terminal. The light emitting element is connected to the driving transistor. The first node is connected to the third node, and the bias power supply voltage is applied to the second and third nodes.

公开(公告)号：US20230274699A1

公开(公告)日：2023-08-31

申请号：US18312257

申请日：2023-05-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： YOUNG-IN HWANG ,  SUNG HO KIM ,  YONG HO YANG ,  SEONG MIN WANG

IPC: G09G3/3233 ,  G09G3/3258 ,  H10K59/131 ,  H10K59/121 ,  H10K77/10

CPC classification number: G09G3/3233 ,  G09G3/3258 ,  H10K59/1213 ,  H10K59/131 ,  H10K77/111 ,  G09G2320/0257 ,  H01L27/1222

Abstract: An organic light emitting diode display includes a driving transistor and a compensation transistor. The driving transistor includes a fist gate electrode disposed on a substrate, a polycrystalline semiconductor layer disposed on the first gate electrode of the driving transistor and including a first electrode, a second electrode, and a channel, and a second gate electrode disposed on the polycrystalline semiconductor layer of the driving transistor. The compensation transistor includes a polycrystalline semiconductor layer including a first electrode, a second electrode, and a channel, and a gate electrode disposed on the polycrystalline semiconductor layer of the compensation transistor.

公开(公告)号：US11710449B2

公开(公告)日：2023-07-25

申请号：US17831272

申请日：2022-06-02

Applicant: Samsung Display Co., Ltd.

Inventor： Jin Pil Kim ,  Kang Hee Lee ,  Joon Chul Goh ,  Jae Sung Bae

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0257 ,  G09G2320/0276

Abstract: A display device includes an afterimage compensator generating output grayscales by applying at least one of first and second weights to input grayscales when the input grayscales correspond to a still image, and pixels displaying an image based on the output grayscales. The afterimage compensator applies the first weight having an initial value greater than 1 to the input grayscales of a first group, and converges the first weight to 1, and applies the second weight having initial values less than 1 to the input grayscales of a second group, and converges the second weights to 1.

公开(公告)号：US11705063B2

公开(公告)日：2023-07-18

申请号：US16897646

申请日：2020-06-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Myounggeun Cha ,  Sanggun Choi ,  Hyena Kwak ,  Jiyeong Shin ,  Yongsu Lee ,  Kiseok Choi

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  H10K59/131 ,  H10K59/121

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  H10K59/1213 ,  H10K59/131 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2330/028 ,  H10K59/1216

Abstract: A display device includes a first transistor including a first channel region, a first gate electrode overlapping the first channel region, and a first electrode connected to a node receiving a driving voltage, a second transistor electrically connected to the first electrode of the first transistor, the second transistor including a second channel region and a second gate electrode overlapping the first channel region and receiving a scan signal, a light emitting element electrically connected to a second electrode of the first transistor, a first conductive line overlapping the first gate electrode with the first channel region in between and receiving a variable voltage different from the driving voltage, and a second conductive line overlapping the second gate electrode with the second channel region in between and receiving the scan signal.

公开(公告)号：US11699413B2

公开(公告)日：2023-07-11

申请号：US17445173

申请日：2021-08-16

Applicant: Samsung Display Co., Ltd.

Inventor： Jun Gyu Lee

IPC: G09G5/10 ,  G09G3/20

CPC classification number: G09G5/10 ,  G09G3/20 ,  G09G2320/0257 ,  G09G2320/0646

Abstract: An afterimage compensation device includes: an afterimage area detector to receive an input image, and detect an afterimage area including an afterimage in the input image; an afterimage area corrector to detect a false detection area, and generate a corrected afterimage area, the false detection area being a part of a general area that is not detected as the afterimage area and surrounded in a plurality of directions by the detected afterimage area; and a compensation data generator to adjust a luminance of the corrected afterimage area to generate compensation data.

公开(公告)号：US20230215346A1

公开(公告)日：2023-07-06

申请号：US18061101

申请日：2022-12-02

Applicant: Samsung Display Co., LTD.

Inventor： Eui Myeong CHO ,  Ho Cheol KANG ,  Jae Hyun KOH ,  Seok Young YOON

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2300/0426 ,  G09G2320/0673 ,  G09G2320/0276 ,  G09G2320/0233 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2360/16 ,  G09G2320/0257 ,  G09G2320/045

Abstract: A display device includes: pixels, each of the pixels including at least one light emitting element and a first transistor configured to supply a driving current to the at least one light emitting element; a sensing unit configured to sense a driving current of the first transistor, which corresponds to a data voltage applied to one pixel from among the pixels, the sensing unit being configured to detect a luminance of the light emitting element, which corresponds to the driving current; a gamma calculator configured to receive the driving current and the luminance of the light emitting element from the sensing unit, to calculate a gamma changed based on the driving current and the luminance of the light emitting element, and to provide, to a memory, the gamma changed based on the driving current and the luminance of the light emitting element.

公开(公告)号：US11688343B2

公开(公告)日：2023-06-27

申请号：US17626474

申请日：2021-01-27

Applicant: BOE Technology Group Co., Ltd.

Inventor： Can Zheng ,  Jianchao Zhu ,  Lujiang Huangfu ,  Libin Liu ,  Shiming Shi

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/043 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2320/0242 ,  G09G2320/0257 ,  G09G2320/045 ,  G09G2330/021

Abstract: In a pixel driving circuit, a compensation sub-circuit is respectively coupled to a first control terminal, a control terminal and a second terminal of the driving sub-circuit; a first terminal of the first coupling sub-circuit is coupled to the control terminal of the driving sub-circuit; a first terminal of the second coupling sub-circuit is coupled to a second terminal of the first coupling sub-circuit; a first reset sub-circuit is respectively coupled to a second control terminal, the control terminal of the driving sub-circuit and an initialization signal output terminal; a second reset sub-circuit is respectively coupled to a third control terminal, a second terminal of the first coupling sub-circuit and the first level signal output terminal; a first light emitting control sub-circuit is respectively coupled to a light emitting control terminal, a second terminal of the second coupling sub-circuit and a reference signal output terminal.

公开(公告)号：US11688325B2

公开(公告)日：2023-06-27

申请号：US17531489

申请日：2021-11-19

Applicant: Wuhan BOE Optoelectronics Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

Inventor： Jie Han ,  Yuanhui Guo ,  Wei Zhang ,  Xia Shi ,  Yujie Gao ,  Bing Li

IPC: G09G3/20 ,  G09G3/36

CPC classification number: G09G3/2074 ,  G09G3/3607 ,  G09G2320/0257 ,  G09G2360/16

Abstract: Provided is a method for driving display and display device including: determining a first target grayscale value and a second target grayscale value in a grayscale matrix of an image to be displayed, the first target grayscale value and the second target grayscale value corresponding to the first sub-pixel and the second sub-pixel of one of the plurality of sub-pixel groups respectively; determining a first actual grayscale value and a second actual grayscale value based on the first target grayscale value and the second grayscale value; driving a first sub-pixel and a second sub-pixel based on the first actual grayscale value and the second actual grayscale value, in an nth display phase; driving a second sub-pixel and a first sub-pixel based on the first target grayscale value and the second actual grayscale value, in an (n+1)th display phase.