公开(公告)号：US20230048014A1

公开(公告)日：2023-02-16

申请号：US17794321

申请日：2021-04-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Li WANG ,  Lujiang HUANGFU

IPC: G09G3/3258

Abstract: A pixel circuit includes a data writing sub-circuit and a leakage prevention sub-circuit. The data writing sub-circuit is coupled to a first scan signal terminal, a data signal terminal and a light-emitting control sub-circuit, and is configured to: in a data writing period, store a light-emitting compensation signal in response to a gate scan signal from the first scan signal terminal and a data signal from the data signal terminal; and in a light-emitting period, assist in controlling the light-emitting control sub-circuit to be turned on according to the light-emitting compensation signal. The leakage prevention sub-circuit is coupled to the data writing sub-circuit and an auxiliary voltage terminal that is configured to provide to a constant voltage, and is configured to: in the data writing period, store another light-emitting compensation signal; and in the light-emitting period, inhibit leakage of the data writing sub-circuit according to the another light-emitting compensation signal.

公开(公告)号：US20230005130A1

公开(公告)日：2023-01-05

申请号：US17784073

申请日：2021-06-11

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Hao TANG ,  Ronghua LAN ,  Jiuyang CHENG ,  Shuo ZHOU ,  Zhong HUANG ,  Guo JIANG ,  Li WANG ,  Lijia ZHOU ,  Zhidong WANG ,  Lirong XU ,  Quanguo ZHOU

IPC: G06T7/00 ,  G06V10/25 ,  G06V10/26

Abstract: A method for detecting a display panel defect, including: collecting a panel image of a to-be-detected display panel, a plurality of first pixels of the display panel corresponding to a plurality of second pixels in the panel image; converting the panel image into a binary image; dilating each bright spot region in the binary image such that adjacent bright spot regions communicate with each other to form at least one closed communication region in the binary image; determining a region of interest mask image in the binary image in accordance with the at least one closed communication region; determining a region of interest in accordance with the region of interest mask image and the panel image; and performing feature identification on the region of interest to determine a defect of the display panel.

公开(公告)号：US20220319424A1

公开(公告)日：2022-10-06

申请号：US17435006

申请日：2020-09-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Li WANG ,  Guangliang SHANG

IPC: G09G3/3233 ,  G11C19/28

Abstract: A shift register includes: an input circuit transmitting a first signal to a first node in response to a first clock signal and a second signal, transmitting the second signal to the first node in response to the first clock signal and the first signal; a first control circuit transmitting the first clock signal to a second node in response to the first node, transmitting a first voltage to the second node in response to the first clock signal; a second control circuit transmitting a second voltage to a third node in response to the first node, transmitting a second clock signal to the third node in response to the second node and the second clock signal; an output circuit transmitting the first voltage to a signal output terminal in response to the first node, transmitting the second voltage to the signal output terminal in response to the third node.

公开(公告)号：US20210159299A1

公开(公告)日：2021-05-27

申请号：US17044182

申请日：2020-04-10

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Li WANG ,  Libin LIU

IPC: H01L27/32 ,  G09G3/32

Abstract: The present disclosure provides an array substrate and a manufacturing method thereof, a display panel and a display device. The array substrate according to an embodiment of the present disclosure includes: a base substrate, and a plurality of pixel units located on the base substrate; each pixel unit at least includes a driving transistor and a light-emitting device; the array substrate further includes: a shielding layer located between a layer where a gate of a driving transistor in each of the pixel units is located and a layer where a first electrode of the light-emitting device is located.

公开(公告)号：US20190180676A1

公开(公告)日：2019-06-13

申请号：US15983429

申请日：2018-05-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chienpang HUANG ,  Ling SHI ,  Li WANG

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2320/0257 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2330/021 ,  G09G2330/028

Abstract: The present disclosure provides a voltage compensation device, a method for voltage compensation and a display device. The voltage compensation device comprises a plurality of thermosensitive sensors, a processor and a power source management module. Each thermosensitive sensor corresponds to one or more pixel units of a display device and is disposed at a position corresponding to the one or more pixel units. For each thermosensitive sensor and one or more pixel units that corresponds to the thermosensitive sensor, the processor is configured to: determine an actual pixel voltage of the one or more pixel units; determine a compensated data signal; transmit the compensated data signal to the power source management module; and control the power source management module to output a compensated data voltage to the one or more pixel units, enabling the one or more pixel units to reach or approach the reference pixel voltage.