公开(公告)号：US12112694B2

公开(公告)日：2024-10-08

申请号：US18374070

申请日：2023-09-28

Applicant: Samsung Display Co., Ltd.

Inventor： Minjae Jeong ,  Jangmi Kang ,  Hyeongseok Kim ,  Junhyun Park ,  Mukyung Jeon

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A pixel includes a light emitting element, a first transistor including a first electrode electrically connected to a first voltage line which supplies a first driving voltage, a second electrode electrically connected to the light emitting element, and a gate electrode connected to a first node, a second transistor connected between the first node and a second node and including a gate electrode connected to a first scan line, a third transistor connected between the second electrode of the first transistor and the second node and including a gate electrode connected to a second scan line, and a booting capacitor connected between the second node and the second scan line.

公开(公告)号：US20240296794A1

公开(公告)日：2024-09-05

申请号：US18658590

申请日：2024-05-08

Applicant: Samsung Display Co., LTD.

Inventor： Juwon YOON ,  IIjeong LEE ,  Jiseon LEE ,  Choongyoul IM

IPC: G09G3/3233 ,  H01L27/12 ,  H10K59/121 ,  H10K59/131

CPC classification number: G09G3/3233 ,  H01L27/1222 ,  H01L27/124 ,  H10K59/1213 ,  G09G2300/0819 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  H10K59/1216 ,  H10K59/131

Abstract: An organic light-emitting display apparatus including an organic light-emitting diode emitting visible light, a driving thin film transistor driving the organic light-emitting diode, and a compensation thin film transistor. The compensation thin film transistor includes a compensation gate electrode, a compensation semiconductor layer, a compensation source electrode, and a compensation drain electrode. The compensation gate electrode includes a first gate electrode, and a second gate electrode electrically connected to the first gate electrode. The compensation drain electrode is electrically connected to the driving gate electrode of the driving thin film transistor. The compensation semiconductor layer includes a first semiconductor region overlapping the first gate electrode and a second semiconductor region overlapping the second gate electrode and disposed further from the compensation drain electrode than the first semiconductor region, and an area of the first semiconductor region is different than an area of the second semiconductor region.

公开(公告)号：US12073805B2

公开(公告)日：2024-08-27

申请号：US17614734

申请日：2021-11-10

Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Youngil Ban

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3648 ,  G09G2310/0251 ,  G09G2320/0209

Abstract: The application provides a pixel charging method and a display panel. In the pixel charging method and the display panel of the application, during a first frame of image, a positive signal is inputted to a part of data lines, and after a first predetermined time length, a negative signal is inputted to the other data lines; during a second frame of image, the negative signal is inputted to a part of the data lines, and after a second predetermined time length, the positive signal is inputted to the other data lines to change the phase of the positive and negative signals.

公开(公告)号：US12073759B2

公开(公告)日：2024-08-27

申请号：US17963352

申请日：2022-10-11

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung Hong ,  SinKyun Park

IPC: G09G3/20 ,  G09G3/32 ,  G09G3/3225 ,  G09G3/3291 ,  H10K59/12

CPC classification number: G09G3/2074 ,  G09G3/3225 ,  G09G3/32 ,  G09G3/3291 ,  G09G2300/0413 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/02 ,  G09G2320/0238 ,  G09G2320/0247 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2330/028 ,  G09G2340/0435

Abstract: A display device includes a sub-pixel comprising a light emitting device and a driving transistor DRT electrically connected to a first electrode of the light emitting device and configured to drive the light emitting device, and a reference voltage line electrically connected to the sub-pixel SP and applying an initialization voltage to the first electrode of the light emitting device, wherein a voltage level of the initialization voltage is changed according to a length of a blank period, thereby improving display quality of the image at a low refresh rate in a variable refresh rate mode.

公开(公告)号：US20240274062A1

公开(公告)日：2024-08-15

申请号：US18143088

申请日：2023-05-04

Applicant: Wuhan Tianma Microelectronics Co., Ltd.

Inventor： Junbo XU

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0852 ,  G09G2310/0251

Abstract: The present application provides a display panel and a display apparatus. The display panel includes a plurality of pixel units arranged in an array, each of the pixel units includes a pixel circuit and a light emitting element; the pixel circuit includes a data writing module, a driving module, a light emitting control module and a pre-charging module; the data writing module is configured to provide a data signal to the driving module; the driving module is configured to provide a driving current to the light emitting element; the light emitting control module is configured to selectively allow the light emitting element to enter a light emitting stage; and the pre-charging module is configured to increase a voltage of a first node to a first voltage in a non-light emitting stage, in which the first voltage is less than a light emitting threshold voltage of the light emitting element.

公开(公告)号：US20240212642A1

公开(公告)日：2024-06-27

申请号：US17912864

申请日：2021-12-30

Applicant: HKC CORPORATION LIMITED

Inventor： Jianlei LI ,  Haoxuan ZHENG

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3677 ,  G09G2310/0202 ,  G09G2310/0251

Abstract: A display panel (100) and a display device (1) are disclosed. The display panel (100) includes: a first group of scan lines (110), a second group of scan lines (120), pixel units (150), data lines (140), and a switching module (160). In the first display mode, the switching module (160) controls the first group of scan lines (110) to be turned on to charge the corresponding pixel units (150). In the second display mode, the switching module (160) controls the second group of scan lines (120) to be turned on to charge the corresponding pixel units (150).

公开(公告)号：US20240212621A1

公开(公告)日：2024-06-27

申请号：US18601221

申请日：2024-03-11

Applicant: Samsung Display Co., Ltd.

Inventor： Hyung Jun PARK ,  Yang Wan KIM ,  Byung Sun KIM ,  Su Jin LEE ,  Jae Yong LEE

IPC: G09G3/3258 ,  G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/3258 ,  G09G3/2003 ,  G09G3/3233 ,  G09G2300/0452 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/0242

Abstract: A display device includes first and second initialization voltage sources and first and second pixel circuits. The first initialization voltage source provides a first initialization voltage. The second initialization voltage source provides a second initialization voltage less than the first initialization voltage. The first pixel circuit includes a first organic light emitting diode. The second pixel circuit includes a second organic light emitting diode with an organic material having a band gap different from a band gap of an organic material in the first organic light emitting diode. The first pixel circuit is coupled to the first initialization voltage source and the second initialization voltage source. The second pixel circuit is coupled to a single initialization voltage source.

公开(公告)号：US20240212553A1

公开(公告)日：2024-06-27

申请号：US18601014

申请日：2024-03-11

Applicant: Beijing BOE Display Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

Inventor： Zhihua Sun ,  Yinlong Zhang ,  Qiujie Su ,  Feng Qu ,  Jing Liu ,  Yanping Liao ,  Xibin Shao

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G3/2092 ,  G09G2310/0205 ,  G09G2310/0224 ,  G09G2310/0251 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/0278 ,  G09G2310/0286 ,  G09G2310/08

Abstract: Embodiments of the present disclosure provide a method of driving display, and a display device. The method of driving display includes: scanning, progressively or rows by rows, a plurality of sub-pixels arranged in an N×M array, to turn on each row of sub-pixels scanned, so that a duration in which two adjacent rows of sub-pixels are simultaneously in an ON state is greater than or equal to two times a unit scanning time, wherein the unit scanning time is a time required for scanning a row of sub-pixels, N is an integer greater than 1, and M is an integer greater than 1; and applying data signals to at least two rows of sub-pixels simultaneously in the ON state, so that a duration of applying the data signals to each row of sub-pixels is greater than the unit scanning time.

公开(公告)号：US20240212539A1

公开(公告)日：2024-06-27

申请号：US18471897

申请日：2023-09-21

Applicant: LG Display Co., Ltd.

Inventor： Moo Kyoung HONG ,  Dong Kyu YANG

IPC: G09G3/00 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G09G3/3233 ,  G09G2300/0452 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2330/08 ,  G09G2330/12

Abstract: A driving device of an electroluminescent display apparatus, including a display panel where a pixel line including a set of pixels is provided in plurality, includes a pixel line determiner configured to select a representative pixel line, disposed at a position at which an accumulation stress caused by repetitive display of an input image is largest, from among all pixel lines, an over driving control controller configured to select a sample pixel characteristic value from among pixel characteristic values of the representative pixel line and selectively output a first ODC control signal and a second ODC control signal, based on a magnitude of the sample pixel characteristic value, and a sensing and driving circuit configured to pre-sense pixel characteristic values of the representative pixel line in the first sensing period, perform ODC sensing on the pixel characteristic values of the all pixel lines once each according to the first ODC control signal in a second sensing period succeeding the first sensing period, and perform the ODC sensing on the pixel characteristic values of the all pixel lines a plurality of times each according to the second ODC control signal in the second sensing period, wherein a sensing data voltage supplied to each pixel of the all pixel lines has multi-voltage levels, in the second sensing period for the ODC sensing.

公开(公告)号：US12020632B2

公开(公告)日：2024-06-25

申请号：US18187711

申请日：2023-03-22

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Jieliang Li ,  Ping An

IPC: G09G3/32 ,  G09G3/3233 ,  G09G3/3291 ,  H01L27/12

CPC classification number: G09G3/32 ,  G09G3/3233 ,  G09G3/3291 ,  H01L27/124 ,  G09G2300/0819 ,  G09G2310/0216 ,  G09G2310/0251 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a data write device, a drive device and a bias adjustment device. The display panel further includes a bias adjustment signal line, a reset signal line or an initialization signal line. At least one side frame of the display panel includes a bias adjustment signal bus, a reset signal bus or an initialization signal bus. The bias adjustment signal bus is disposed in a first side frame of the display panel, the reset signal bus or the initialization signal bus is disposed in a second side frame of the display panel; and the first side frame is adjacent to the second side frame, or is opposite to the second side frame, or, the bias adjustment signal bus is disposed in a same side frame with the reset signal bus or the initialization signal bus.