公开(公告)号：US11217160B2

公开(公告)日：2022-01-04

申请号：US16331673

申请日：2018-08-16

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Cuili Gai ,  Yicheng Lin ,  Baoxia Zhang ,  Ling Wang ,  Quanhu Li ,  Pan Xu

IPC: G09G3/3233

Abstract: A pixel circuit includes a data writing sub-circuit inputs a signal input via a second signal terminal to a compensating sub-circuit and a driving sub-circuit under control of a signal from a first signal terminal, the compensating sub-circuit compensates a threshold voltage of the driving sub-circuit according to a signal output from the data writing sub-circuit under control of a signal from a third signal terminal, a light-emitting control sub-circuit inputs a signal from a first voltage terminal to the driving sub-circuit and the compensating sub-circuit under control of a signal from a fourth signal terminal, the driving sub-circuit configured to generate and input a driving current to a light-emitting sub-circuit according to a signal output from the light-emitting control sub-circuit and a signal output from the data writing sub-circuit, and the light-emitting sub-circuit configured to emit light according to the driving current under control of a second voltage terminal.

公开(公告)号：US10818207B2

公开(公告)日：2020-10-27

申请号：US16086675

申请日：2018-03-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yongqian Li ,  Pan Xu ,  Quanhu Li

IPC: G09G3/00 ,  G09G3/30

Abstract: A circuitry and a method for detecting a failed pixel, and a display device are provided. The circuitry for detecting the failed pixel includes a display control circuit and a failed pixel detection circuit. The display control circuit is connected to a pixel driving circuit, and configured to control, at detection voltage write-in stage and failed pixel detection stage, the pixel driving circuit to cause light-emitting element not to emit light. The failed pixel detection circuit is connected to first electrode of the light-emitting element via failure sense line, and configured to apply a reference voltage to the first electrode of the light-emitting element via the failure sense line at the detection voltage write-in stage, detect a potential at the first electrode of the light-emitting element at the failed pixel detection stage, and determine, in accordance with the potential, whether the pixel circuit is failed.

公开(公告)号：US10762844B2

公开(公告)日：2020-09-01

申请号：US16096796

申请日：2018-01-17

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yongqian Li ,  Pan Xu ,  Quanhu Li

IPC: G09G5/00 ,  G09G3/3258

Abstract: The present application provides a pixel driving circuit, including a driving sub-circuit, a compensation sub-circuit, a first switching sub-circuit, and a second switching sub-circuit. The driving sub-circuit has a control terminal electrically connected to a first terminal of the second switching sub-circuit, a first terminal electrically connected to a light-emitting element, and a second terminal electrically connected to a power source; the compensation sub-circuit has a first terminal electrically connected to the first terminal of the driving sub-circuit, and a second terminal electrically connected to the control terminal of the driving sub-circuit; the first switching sub-circuit has a control terminal electrically connected to a first signal input terminal, a first terminal electrically connected to the first terminal of the driving sub-circuit, and a second terminal electrically connected to an initial voltage input terminal; and the second switching sub-circuit has a control terminal electrically connected to a second signal input terminal, a first terminal electrically connected to the control terminal of the driving sub-circuit, and a second terminal electrically connected to a data signal input terminal.

公开(公告)号：US10734613B2

公开(公告)日：2020-08-04

申请号：US16014755

申请日：2018-06-21

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xing Zhang ,  Wei Li ,  Quanhu Li ,  Xuehuan Feng ,  Jianye Zhang

IPC: H01L51/56 ,  H01L27/32 ,  H01L51/50 ,  H01L51/52 ,  H01L51/00

Abstract: A method for manufacturing an organic light-emitting diode substrate is provided and includes: on a base substrate with a black matrix pattern, forming a conductive layer covering the black matrix pattern and a photoresist pattern that partially stacks on the conductive layer, through one patterning process by taking the black matrix pattern as a mask plate; and removing the photoresist pattern and portions of the conductive layer that stack on the photoresist pattern, thereby forming a patterned conductive layer.

公开(公告)号：US10573245B2

公开(公告)日：2020-02-25

申请号：US15537724

申请日：2016-10-18

Applicant: BOE Technology Group Co., Ltd.

Inventor： Quanhu Li ,  Yongqian Li ,  Song Meng

IPC: G09G3/3266 ,  G11C19/28 ,  G11C19/18 ,  G09G3/36

Abstract: A shift register unit and a driving method thereof, shift register and display device. The shift register unit including an input circuit (P1), a pull-down control circuit (P2), a pull-up control circuit (P3), a pull-up circuit (P4) and a pull-down circuit (P5); wherein the input circuit (P1) is connected to a first trigger signal end (STU), a first clock signal end (CLK1), a power level end (VGL) and a pull-up control node (Q), and is for utilizing a bootstrap effect to transfer a signal of the first trigger signal end (STU) to the pull-up control node (Q) without a threshold voltage loss. The shift register unit is for use in a display device, and resolves the problem of a display device having a non-uniform display, resulting in a poor displaying effect of a display device.

公开(公告)号：US10510901B2

公开(公告)日：2019-12-17

申请号：US15127262

申请日：2015-09-24

Applicant: BOE Technology Group Co., Ltd.

Inventor： Longyan Wang ,  Yongqian Li ,  Cuili Gai ,  Quanhu Li ,  Baoxia Zhang ,  Jingwen Yin ,  Kun Cao ,  Zhongyuan Wu ,  Gang Wang

IPC: H01L29/76 ,  H01L29/786 ,  H01L27/12 ,  H01L27/32 ,  H01L29/417 ,  H01L29/423 ,  H01L29/66

Abstract: A thin film transistor and a fabrication method thereof, an array substrate and a display device are provided. The thin film transistor comprises a gate electrode, an active layer, a source electrode and a drain electrode. The source electrode and the drain electrode include a first conductive layer provided on the active layer, and an etching rate of a material of the first conductive layer is greater than an etching rate of a material of the active layer in an etching liquid. The problem that the active layer of the thin film transistor is easily corroded in a back channel etch process is avoided, a number of patterning processes is reduced, and fabrication cost is reduced.

公开(公告)号：US20180357963A1

公开(公告)日：2018-12-13

申请号：US15776982

申请日：2017-12-11

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Cuili Gai ,  Baoxia Zhang ,  Ling Wang ,  Yicheng Lin ,  Quanhu Li

IPC: G09G3/3258 ,  G09G3/3233

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2320/0233

Abstract: The present application discloses a pixel circuit in a display panel. The pixel circuit includes a data-input sub-circuit coupled to a data line and a scan line, an emission-control sub-circuit configured to control a first voltage from a first voltage terminal to be applied to a second node, a reset sub-circuit coupled to a reset port and a reset-control terminal, a capacitor coupled between the first node and the third node to regulate a voltage difference thereof, a light-emitting device coupled to the third node and a second voltage terminal, and a driving sub-circuit coupled to the second node, the first node, and the third node, the driving sub-circuit being configured to drive the light-emitting device to emit light under controls of both the data signal at the first node and the first voltage at the second node.

公开(公告)号：US10134339B2

公开(公告)日：2018-11-20

申请号：US15127770

申请日：2015-10-20

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Quanhu Li

IPC: G11C19/28 ,  G09G3/3266 ,  G09G3/32 ,  G09G3/3225

Abstract: The present invention discloses a shift register unit and method for driving it, and a gate driving circuit. The shift register unit comprises an output module, an unset module and an unset control module; wherein a control terminal of the output module, an output terminal of the unset module are connected to a first node; an output terminal of the unset control module is connected to a control terminal of the unset module; the unset module is configured to be turned off under the control of a control signal accessed to a control terminal of the unset control module so as to prevent the unset module from unsetting the first node, such that the output module outputs a shift signal having multiple pulses during the period in which the unset module is turned off.

公开(公告)号：US20180286930A1

公开(公告)日：2018-10-04

申请号：US15788230

申请日：2017-10-19

Applicant: BOE Technology Group Co., Ltd.

Inventor： Cuili Gai ,  Zhongyuan Wu ,  Kun Cao ,  Yicheng Lin ,  Quanhu Li

IPC: H01L27/32 ,  G02F1/153 ,  G02F1/133 ,  G02F1/1343 ,  G02F1/1334 ,  G02F1/137 ,  G02F1/163 ,  G02B27/01

CPC classification number: H01L27/3232 ,  G02B27/0172 ,  G02F1/13306 ,  G02F1/1334 ,  G02F1/134309 ,  G02F1/137 ,  G02F1/15 ,  G02F1/153 ,  G02F1/163 ,  G02F2001/134345 ,  G02F2201/44 ,  H01L27/3244 ,  H01L27/3276 ,  H01L51/5206 ,  H01L51/5234 ,  H01L51/524 ,  H01L51/56 ,  H01L2227/323 ,  H01L2251/5315 ,  H01L2251/5323

Abstract: A display panel, a display method thereof, and a manufacturing method thereof are provided. The display panel includes a plurality of sub-pixel units. Each of the sub-pixel units includes a first display area and a second display area; the first display area includes an active emitting display unit; and the second display area is configured to switch between a transparent state and an opaque state.

公开(公告)号：US20180277043A1

公开(公告)日：2018-09-27

申请号：US15537724

申请日：2016-10-18

Applicant: BOE Technology Group Co., Ltd.

Inventor： Quanhu Li ,  Yongqian Li ,  Song Meng

IPC: G09G3/3266 ,  G09G3/36 ,  G09G3/34 ,  G11C19/28

Abstract: A shift register unit and a driving method thereof, shift register and display device. The shift register unit including an input circuit (P1), a pull-down control circuit (P2), a pull-up control circuit (P3), a pull-up circuit (P4) and a pull-down circuit (P5); wherein the input circuit (P1) is connected to a first trigger signal end (STU), a first clock signal end (CLK1), a power level end (VGL) and a pull-up control node (Q), and is for utilizing a bootstrap effect to transfer a signal of the first trigger signal end (STU) to the pull-up control node (Q) without a threshold voltage loss. The shift register unit is for use in a display device, and resolves the problem of a display device having a non-uniform display, resulting in a poor displaying effect of a display device.