公开(公告)号：US20220344557A1

公开(公告)日：2022-10-27

申请号：US17417660

申请日：2020-10-22

Applicant: BOE Technology Group Co., Ltd.

Inventor： Haixu LI ,  Guangcai YUAN ,  Zhanfeng CAO ,  Ke WANG ,  Qi QI

IPC: H01L33/62 ,  H01L33/00

Abstract: The present disclosure provides a display backplane including an array substrate including at least one pixel unit each including at least one TFT; a planarization layer covering the array substrate; a pad layer including pads on the planarization layer, surface of the pad away from the planarization layer being first surface, each pixel unit being provided with one pad electrically coupled to a driving thin film transistor in a corresponding pixel unit through via hole penetrating through the planarization layer; a passivation layer covering the pad layer and including through holes, each pad corresponding to one through hole, such that the first surface of each pad is exposed through corresponding through hole, and area of top opening of through hole is smaller than area of bottom opening thereof. The present disclosure further provides a fabrication method of the display backplane, a display panel and a fabrication method thereof.

公开(公告)号：US20220310011A1

公开(公告)日：2022-09-29

申请号：US17424176

申请日：2021-01-13

Applicant: BOE Technology Group Co., Ltd.

Inventor： Liang CHEN ,  Dongni LIU ,  Li XIAO ,  Minghua XUAN ,  Haoliang ZHENG ,  Zhenyu ZHANG ,  Hao CHEN ,  Jiao ZHAO ,  Qi QI

IPC: G09G3/3233 ,  G09G3/20

Abstract: A pixel circuit includes a current control sub-circuit, a combined light emitting sub-circuit, and a first light emitting element to an Nth light emitting element, N being a natural number greater than 1. The current control sub-circuit is configured to receive a display data signal and a light emitting control signal, control whether to generate a driving current according to the light emitting control signal, and control a current intensity of the generated driving current according to the display data signal. The combined light emitting sub-circuit is configured to receive the driving current and a first light emitting data signal to an Nth light emitting data signal and drive one or more of the first light emitting element to the Nth light emitting element to emit light according to the first light emitting data signal to the Nth light emitting data signal.

公开(公告)号：US20220277689A1

公开(公告)日：2022-09-01

申请号：US17744965

申请日：2022-05-16

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jiao ZHAO ,  Li XIAO ,  Minghua XUAN ,  Haoliang ZHENG ,  Dongni LIU ,  Jing LIU ,  Qi QI ,  Zhenyu ZHANG ,  Liang CHEN ,  Hao CHEN ,  Lijun YUAN

IPC: G09G3/32 ,  G11C19/28 ,  H01L25/075 ,  H01L27/02 ,  H01L27/12 ,  H01L33/62

Abstract: An array substrate includes pixel group(s) and pixel circuit group(s), each pixel group includes pixels, and each pixel includes sub-pixel(s). At least two pixel groups are arranged in a row direction; in a column direction, a length of a pixel group is greater than a length of a pixel circuit group electrically connected thereto; and orthographic projections of a sub-pixel and a pixel circuit group electrically connected to a pixel group to which the sub-pixel belongs on a plane does not overlap. Or, the at least two pixel groups are arranged in the column direction; in the row direction, a length of a pixel group is greater than a length of a pixel circuit group electrically connected thereto; and orthographic projections of a sub-pixel and a pixel circuit group electrically connected to a pixel group to which the sub-pixel belongs on another plane does not overlap.

公开(公告)号：US20220254972A1

公开(公告)日：2022-08-11

申请号：US17628926

申请日：2021-03-10

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xinhong LU ,  Zhanfeng CAO ,  Jingshang ZHOU ,  Liuqing LI ,  Ting ZENG ,  Yongfei LI ,  Qi QI

IPC: H01L33/62

Abstract: The present disclosure provides a driving substrate, including: a flexible substrate including a display region and a bendable region; a first conductive layer on the flexible substrate and including a first wire in the display region, and a connection wire at least partially in the bendable region; a flexible insulating layer including a first insulation pattern in the display region, and a second insulation pattern in the bendable region; a second conductive layer at a side of the flexible insulating layer far away from the flexible substrate; and a planarization layer at a side of the second conductive layer far away from the flexible substrate and having a hollow structure in the bendable region, wherein a thickness of a portion of the second insulating pattern covering the connection wire is d2, a thickness of the flexible substrate is d3, and d2≥2 μm and |d2−d3|≤3 μm.

公开(公告)号：US20220246074A1

公开(公告)日：2022-08-04

申请号：US17475529

申请日：2021-09-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Minghua XUAN ,  Haoliang ZHENG ,  Liang CHEN ,  Qi QI ,  Jing LIU ,  Dongni LIU

IPC: G09G3/20 ,  H01L27/12 ,  H01L23/552 ,  H01L23/522

Abstract: The present disclosure provides a driving backplane, a display panel and a display device. The driving backplane comprises: a base substrate having a plurality of first conductive vias; a pixel circuit layer disposed on the base substrate and comprising a plurality of pixel circuits and a plurality of signal lines; a conductive portion, at least part of which is disposed in one first conductive via; a conductive pattern layer disposed on the base substrate and comprising a plurality of first conductive patterns; and a shielding layer disposed between the pixel circuit layer and the conductive pattern layer and having a plurality of hollow areas; wherein each of the plurality of signal lines is coupled to one first conductive pattern through at least one of the conductive portions.

公开(公告)号：US20220238066A1

公开(公告)日：2022-07-28

申请号：US17491055

申请日：2021-09-30

Applicant: BOE Technology Group Co., Ltd.

Inventor： Liang CHEN ,  Dongni LIU ,  Haoliang ZHENG ,  Li XIAO ,  Seungwoo HAN ,  Jiao ZHAO ,  Hao CHEN ,  Minghua XUAN ,  Qi QI

IPC: G09G3/32

Abstract: The present application discloses a driving circuit and a display panel. The driving circuit includes a driving current generation circuit and a light emitting time control circuit. The driving current generation circuit is connected to a first reference voltage terminal, a data voltage terminal and the light emitting time control circuit, and is configured to generate a driving current under the control of the first reference voltage terminal and the data voltage terminal, and transmit the driving current to the light emitting time control circuit. The light emitting time control circuit is connected to the driving current generation circuit, a time control signal terminal, a reference signal terminal and a light emitting element, and is configured to control a duration of transmitting the driving current to the light emitting element under the control of the time control signal terminal and the reference signal terminal.

公开(公告)号：US20220036821A1

公开(公告)日：2022-02-03

申请号：US17203241

申请日：2021-03-16

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

Inventor： Ning CONG ,  Minghua XUAN ,  Can ZHANG ,  Xiaochuan CHEN ,  Lijun YUAN ,  Qi QI

IPC: G09G3/3233

Abstract: A pixel driving circuit includes a current controlling module, an outputting module and a time length controlling module including a comparator, a first energy storage element, an offset voltage writing sub-circuit, and first and second output sub-circuits. First terminal of first energy storage element is connected with first input terminal of comparator and second terminal with the first output sub-circuit. The second output sub-circuit is connected with second input terminal of comparator. The offset voltage writing sub-circuit writes an offset voltage of comparator to the first energy storage element. One of the first and second output sub-circuits outputs time signal and the other outputs reference voltage signal. The comparator outputs comparison signal according to the time signal and the reference voltage signal. The current controlling module outputs current signal. The outputting module turns on responsive to the comparison signal and controls current of light-emitting unit according to the current signal.

公开(公告)号：US20210375700A1

公开(公告)日：2021-12-02

申请号：US17255079

申请日：2019-11-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Li XIAO ,  Jiao ZHAO ,  Minghua XUAN ,  Dongni LIU ,  Haoliang ZHENG ,  Zhenyu ZHANG ,  Liang CHEN ,  Hao CHEN ,  Jing LIU ,  Qi QI

IPC: H01L21/66 ,  H01L27/12 ,  H01L25/16

Abstract: The present disclosure provides a method for detecting resistance of a side trace of a display substrate and the display substrate, and belongs to the field of display technology. In the method for detecting resistance of a side trace of a display substrate, the display substrate includes: a base substrate including a first surface and a second surface opposite to each other; a plurality of first pads at intervals on the first surface; and a plurality of second pads at intervals on the second surface; the first pad is electrically connected to a corresponding second pad through a side trace; the method includes forming at least one detection unit; wherein forming the detection unit includes: connecting two first pads through a connection part; and detecting two second pads in the detection unit, and obtaining resistance of the detection unit to obtain the resistance of the side trace.

公开(公告)号：US20250098064A1

公开(公告)日：2025-03-20

申请号：US18552754

申请日：2022-10-31

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Nianqi YAO ,  Kun ZHAO ,  Ce NING ,  Zhengliang LI ,  Zhanfeng CAO ,  Ke WANG ,  Jiaxiang ZHANG ,  Qi QI ,  Hehe HU ,  Feifei LI ,  Jie HUANG ,  Jiayu HE

IPC: H05K1/02 ,  G02F1/1335 ,  G02F1/13357 ,  H05K1/11 ,  H05K3/28

Abstract: A circuit board includes a substrate, a first conductive layer, a first insulating layer and a second conductive layer. The first conductive layer includes a plurality of first conductive portions. The second conductive layer includes a plurality of second conductive portions. A second conductive portion passes through a first via hole in the first insulating layer to be in electrical contact with a first conductive portion. The first conductive layer and the second conductive layer each include at least one main conductive layer, which is capable of creating a first intermetallic compound with solder. At least one of the first conductive layer and the second conductive layer further includes a stop layer capable of creating a second intermetallic compound with the solder. A rate of a reaction between the stop layer and the solder is lower than a rate of a reaction between the main conductive layer and the solder.

公开(公告)号：US20240421275A1

公开(公告)日：2024-12-19

申请号：US18701618

申请日：2023-04-19

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Can WANG ,  Yan QU ,  Minghua XUAN ,  Mingxing WANG ,  Xuan LIANG ,  Fei WANG ,  Xue DONG ,  Qi QI ,  Mingkun YANG

IPC: H01L33/62 ,  H01L25/16 ,  H01L33/00 ,  H01L33/32

Abstract: A display substrate includes a driving backplane, and a light-emitting device layer located on a side of the driving backplane. The light-emitting device layer includes a plurality of light-emitting units; a plurality of transparent electrodes which are located on surfaces of the plurality of light-emitting units away from the driving backplane and electrically connected to the light-emitting units; and a first bonding pattern which is at least located between the plurality of transparent electrodes. The first bonding pattern is electrically connected to at least one transparent electrode.