公开(公告)号：US12133449B2

公开(公告)日：2024-10-29

申请号：US17599654

申请日：2020-10-21

Applicant: Chengdu BOE Optoelectronics Technology Co., Ltd. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yupeng He ,  Yang Zhou ,  Yao Huang ,  Xin Zhang ,  Yu Wang

IPC: H10K59/88 ,  G09G3/20 ,  H10K59/121 ,  H10K59/131

CPC classification number: H10K59/88 ,  G09G3/20 ,  H10K59/1216 ,  H10K59/131 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861

Abstract: The present disclosure provides a display substrate and a display device, and belongs to the field of display technology. The display substrate provided by the present disclosure has a display area and a peripheral area surrounding the display area, and includes a substrate; a plurality of pixel circuits on the substrate and in the display area; and a plurality of dummy pixel circuits on the substrate and in the peripheral area; wherein the number of transistors in each dummy pixel circuit is smaller than the number of transistors in each pixel circuit. Because the number of the transistors in the dummy pixel circuit is smaller than the number of the transistors in the pixel circuit, space occupied by the dummy pixel circuit in the peripheral area can be reduced, thereby facilitating realization of a display device with a narrow bezel.

公开(公告)号：US20240355282A1

公开(公告)日：2024-10-24

申请号：US18602194

申请日：2024-03-12

Applicant: Sharp Display Technlology Corporation

Inventor： Hidekazu MIYATA

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0413 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2330/026 ,  G09G2330/027 ,  G09G2330/028

Abstract: A display device includes a light-emitting element, a first transistor, a second transistor, a third transistor, a drive circuit, and a voltage compensation circuit. The drive circuit supplies, in an initial period, an initial voltage to a gate electrode of the first transistor, and supplies a data signal to the first electrode in a write period succeeding the initial period, and turns ON the third transistor. The voltage compensation circuit includes a first capacitive element, a second capacitive element, a first switch, and a second switch. The voltage compensation circuit switches, when the write period starts, from the state in which the second switch is ON to the state in which the second switch is OFF, and turns ON the first switch after the write period starts. The drive circuit turns ON the second transistor in a light ON period succeeding the turning ON of the first switch.

公开(公告)号：US12118940B2

公开(公告)日：2024-10-15

申请号：US18334930

申请日：2023-06-14

Applicant: JOLED INC.

Inventor： Hiroshi Fujimura ,  Hitoshi Tsuge

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0413 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2320/0247

Abstract: A control method is a method of a display device including a plurality of pixel circuits. Each of the pixel circuits includes a light emitting element, a drive transistor, and a pixel capacitance. The drive transistor includes a gate and a source. A frame period includes a first subframe period and at least one second subframe period. In the first subframe period, the control method includes: (A) applying a first initialization potential to the source; (B) writing a signal into the pixel capacitance; and (C) causing the light emitting element to emit light. In each of the at least one second subframe period, the control method includes: (D) maintaining the light emitting element in a non-emission state; (E) applying a second initialization potential to the source in (D); and (F) causing the light emitting element to emit light.

公开(公告)号：US12073786B2

公开(公告)日：2024-08-27

申请号：US18201739

申请日：2023-05-24

Applicant: Samsung Display Co., Ltd.

Inventor： Jang Mi Kang ,  Jun Hyun Park ,  Min Jae Jeong

IPC: G09G3/3233 ,  H10K59/121 ,  H10K59/126 ,  H10K59/131

CPC classification number: G09G3/3233 ,  H10K59/1213 ,  H10K59/1216 ,  H10K59/126 ,  H10K59/131 ,  G09G2300/0413 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/0257 ,  G09G2330/021

Abstract: A pixel of display device includes a light emitting element, a first transistor coupled between first power source and a second node and having a gate electrode connected to a first node N1, and the first transistor being configured to control a driving current supplied to the light emitting element in response to a voltage of the first node, a first capacitor including one electrode connected to the first node and another electrode connected to a third node, a second transistor coupled between the third node and a data line, a third transistor coupled between the first node and the second node, a fourth transistor coupled between the first node and an initialization power source, a fifth transistor coupled between a reference power source and the third node, and an eighth transistor coupled between a fourth node and an anode initialization power source.

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：US12062666B2

公开(公告)日：2024-08-13

申请号：US18492319

申请日：2023-10-23

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: H01L27/12 ,  G06F3/041 ,  G06F3/044 ,  G09G3/20

CPC classification number: H01L27/124 ,  G06F3/0412 ,  G06F3/04166 ,  G06F3/044 ,  G09G3/20 ,  G09G2300/0408 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2310/0202 ,  G09G2310/0297

Abstract: A display device with touch detection function includes a display unit having a first and a second data lines, a first region outside the display unit, a second region on an opposite side of the first region sandwiching the display unit with the first region, a sensor unit including a sensor electrode, a first data signal supply line connected to the first data line and arranged in the first region, a second data signal supply line connected to the second data line and arranged in the second region, a dummy wiring arranged in the first region and not connected to the sensor electrode, and a sensor wiring arranged in the second region and connected to the sensor electrode. A line length of the dummy wiring in the first region is substantially same as a line length of the sensor wiring in the second region.

公开(公告)号：US20240251625A1

公开(公告)日：2024-07-25

申请号：US17778218

申请日：2021-07-27

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

Inventor： Zhaohui MENG

IPC: H10K59/35 ,  G09G3/20 ,  G09G3/3208 ,  H10K59/90

CPC classification number: H10K59/353 ,  G09G3/2074 ,  G09G3/3208 ,  G09G2300/0413 ,  G09G2300/0452 ,  G09G2370/00 ,  H10K59/90

Abstract: The present disclosure provides a display panel, a display device and a display driving method. The display panel includes a first display region and a second display region each including a plurality of pixel repeat units, each pixel repeat unit includes two pixel groups in adjacent pixel rows, and the two pixel groups in a same pixel repeat unit are closest to each other relative to two pixel groups in different pixel repeat units. Each pixel group includes a plurality of sub-pixels in different colors, and the sub-pixels in different colors are arranged in different modes along a pixel row direction in the two pixel groups in a same pixel repeat unit.

公开(公告)号：US20240234447A9

公开(公告)日：2024-07-11

申请号：US18373893

申请日：2023-09-27

Applicant: Sharp Display Technology Corporation

Inventor： Hidetoshi NAKAGAWA ,  Yoshihisa TAKAHASHI ,  Masahiro MATSUDA

IPC: H01L27/12 ,  G02F1/1362 ,  G02F1/1368 ,  G09G3/36

CPC classification number: H01L27/1255 ,  G02F1/136259 ,  G02F1/1368 ,  G09G3/3674 ,  G09G2300/0413 ,  G09G2310/0286

Abstract: A display panel includes a display region defined by a plurality of pixels P and a peripheral region other than the display region. The display panel includes a gate drive circuit and a dummy capacitance portion in the peripheral region. The gate drive circuit includes a shift register. The dummy capacitance portion includes a plurality of capacitance elements connected in parallel and connected to a dummy stage. Each of the plurality of capacitance elements includes a first capacitance electrode, a second capacitance electrode, and a dielectric layer positioned between the first capacitance electrode and the second capacitance electrode. The dummy capacitance portion further includes at least one first connection portion with two ends respectively connected to the first capacitance electrode of any one of the plurality of capacitance elements and to the first capacitance electrode of any other one of the plurality of capacitance elements.

公开(公告)号：US12020502B2

公开(公告)日：2024-06-25

申请号：US18121205

申请日：2023-03-14

Applicant: Samsung Display Co., Ltd.

Inventor： Sunghwan Kim ,  Hyunae Park ,  Seowon Choe

IPC: G06V40/13 ,  G09G3/3233 ,  G09G3/3258 ,  H10K59/131

CPC classification number: G06V40/1318 ,  G09G3/3233 ,  G09G3/3258 ,  H10K59/131 ,  G09G2300/0408 ,  G09G2300/0413 ,  G09G2300/0452 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2354/00

Abstract: A display device includes a base layer. A circuit layer is disposed on the base layer and includes at least one insulating layer and at least one transistor. An element layer is disposed on the circuit layer and includes a light emitting element and a light sensing element. The circuit layer includes a data line connected to the light emitting element and a readout line connected to the light sensing element. The readout line outputs a sensing signal in a sensing section of the display device. The readout line receives a reference voltage in a non-sensing section of the display device.

公开(公告)号：US11996052B2

公开(公告)日：2024-05-28

申请号：US17976548

申请日：2022-10-28

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong ,  Uitaek Jeong ,  HyeonWoo Lee ,  DongKyu Yang ,  SinKyun Park ,  SeungWon Lee

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

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G3/3283 ,  G09G2300/0413 ,  G09G2300/0842 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0214 ,  G09G2320/045 ,  G09G2330/021

Abstract: A display device can include a display panel having a plurality of subpixels; a gate driving circuit configured to supply a plurality of scan signals to the display panel through a plurality of gate lines, and output a feedback voltage; a data driving circuit configured to supply a plurality of data voltages to the display panel through a plurality of data lines; a power management circuit configured to supply a plurality of driving voltages to the gate driving circuit and the data driving circuit, and supply a compensating high-potential gate voltage to the gate driving circuit based on the feedback voltage transferred from the gate driving circuit. The display device can further include a timing controller configured to control the gate driving circuit, the data driving circuit, and the power management circuit.