公开(公告)号：US20220076616A1

公开(公告)日：2022-03-10

申请号：US17417238

申请日：2020-11-03

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Dongni LIU ,  Minghua XUAN

IPC: G09G3/32

Abstract: The present application provides a pixel driving circuit, a display apparatus and a method for driving a pixel driving circuit. The pixel driving circuit includes a driving sub-circuit, a duration control sub-circuit and a data writing sub-circuit. The driving sub-circuit is electrically coupled to the duration control sub-circuit and the data writing sub-circuit, respectively, the data writing sub-circuit is configured to transmit a data signal to the driving sub-circuit, the duration control sub-circuit is configured to control a turned-on duration of the driving sub-circuit, and the driving sub-circuit is configured to control a current of a to-be-driven element according to the data signal during the turned-on duration. The display apparatus includes the pixel driving circuit provided by the present application. The method is applied to the pixel driving circuit provided by the present application.

公开(公告)号：US20210407380A1

公开(公告)日：2021-12-30

申请号：US17294556

申请日：2020-09-27

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Dongni LIU ,  Minghua XUAN ,  Qi QI ,  Jing LIU

IPC: G09G3/32

Abstract: A pixel driving circuit includes a driving control sub-circuit and a driving duration control sub-circuit. The driving control sub-circuit includes a first driving sub-circuit connected to a first node. The driving control sub-circuit is configured to be connected to an element to be driven. The driving control sub-circuit is configured to output a driving signal to drive the element to be driven to operate. The driving duration control sub-circuit includes a second driving sub-circuit connected to a second node. The driving duration control sub-circuit is configured to write a first voltage signal into the second node, write a third voltage signal into the second node, and transmit a second voltage signal to the first node in response to a voltage variation at the second node to stop the first driving sub-circuit from outputting the driving signal, so as to control an operating duration of the element to be driven.

公开(公告)号：US20210399185A1

公开(公告)日：2021-12-23

申请号：US17283512

申请日：2020-05-08

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Dongni LIU ,  Minghua XUAN ,  Chao LIU ,  Yingwei LIU

IPC: H01L33/62 ,  H01L33/00

Abstract: The present disclosure provides a display panel and a manufacturing method. The display panel includes: a base substrate including a display surface and a display back surface arranged opposite to each other, and a side surface connected to the display surface and the display back surface; a plurality of first wirings on the display surface of the base substrate; a plurality of second wirings on the display back surface of the base substrate; a transition body on the side surface of the base substrate and in contact with the first wirings and the second wirings, a surface of the transition body away from the side surface being a smooth curved surface; and a plurality of connection lines covering an outer surface of the transition body, each first wiring being electrically connected to a corresponding second wiring via a corresponding connection line.

公开(公告)号：US20210375203A1

公开(公告)日：2021-12-02

申请号：US16484983

申请日：2019-01-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Liang CHEN ,  Lei WANG ,  Dongni LIU ,  Li XIAO ,  Xiaochuan CHEN ,  Minghua XUAN ,  Shengji YANG ,  Pengcheng LU ,  Detao ZHAO ,  Ning CONG

IPC: G09G3/3233 ,  G09G3/20

Abstract: A display panel and a driving method thereof, and a display device are disclosed. The display panel includes a plurality of sub-pixel unit groups arranged in an array, the array includes a plurality of rows and a plurality of columns, each of the sub-pixel unit groups includes N sub-pixel units disposed along a column direction and a pixel driving circuit each of the N sub-pixel units includes a light-emitting circuit the pixel driving circuit is electrically connected to the light-emitting circuits of the N sub-pixel units, and the pixel driving circuit is configured to provide light-emitting driving currents to the light-emitting circuits of the N sub-pixel units.

公开(公告)号：US20210359184A1

公开(公告)日：2021-11-18

申请号：US17265806

申请日：2020-05-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhanfeng CAO ,  Yingwei LIU ,  Ke WANG ,  Dongni LIU ,  Minghua XUAN ,  Guangcai YUAN ,  Lei CHEN ,  Xue DONG

IPC: H01L33/62 ,  G09G3/00 ,  G09G3/32

Abstract: The present disclosure provides a driving substrate, a method for preparing the same, and a flexible display device. The driving substrate includes: a base substrate; a first driving function layer arranged on a first surface of the base substrate, the first driving function layer including a plurality of driving thin film transistors and a plurality of signal wirings, and at least one of the plurality of signal wirings being of a single-layer structure and having a thickness greater than a threshold; a pad layer arranged on a surface of the first driving function layer away from the base substrate, the pad layer including a plurality of first pads and a plurality of second pads, and each first pad being connected to a first electrode of the corresponding driving thin film transistor and each second pad being connected to a common electrode line in the plurality of signal wirings.

公开(公告)号：US20210335215A1

公开(公告)日：2021-10-28

申请号：US16611742

申请日：2019-03-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Dongni LIU ,  Lei WANG ,  Minghua XUAN ,  Xiaochuan CHEN ,  Shengji YANG ,  Liang CHEN ,  Li XIAO ,  Zheng FANG ,  Detao ZHAO ,  Pengcheng LU

IPC: G09G3/32

Abstract: A display driving circuit includes N levels of display driving sub-circuits and N levels of switching sub-circuits. Each display driving sub-circuit is connected to a corresponding switching sub-circuit. An nth-level display driving sub-circuit includes an nth-level gate driving sub-circuit and an nth-level light-emitting control sub-circuit. An nth-level switching sub-circuit includes an nth-level gate driving switching sub-circuit and an nth-level light-emitting control switching sub-circuit. The nth-level gate driving switching sub-circuit is configured to enable an nth-level gate driving signal output end to be electrically connected to a (2n−1)th gate line or a 2nth gate line. The nth-level light-emitting control switching sub-circuit is configured to enable an nth-level light-emitting control signal output end to be electrically connected to a (2n−1)th light-emitting control line or a 2nth light-emitting control line, where N is an integer greater than 1, and n is a positive integer smaller than or equal to N.

公开(公告)号：US20210200351A1

公开(公告)日：2021-07-01

申请号：US16078061

申请日：2017-12-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji YANG ,  Xue DONG ,  Jing LV ,  Xiaochuan CHEN ,  Dongni LIU ,  Lei WANG ,  Pengcheng LU ,  Jie FU ,  Han YUE ,  Li XIAO

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3266 ,  G09G3/36

Abstract: A shift register unit includes an input circuit, a first control circuit, a second control circuit, a third control circuit, a first output circuit, and a second output circuit. The first and second output circuits selectively transfer a first reference voltage from a first reference voltage terminal and a third reference voltage from a third reference voltage terminal to an output terminal of the shift register unit. This allows the shift register unit to output a desired output signal in an easy manner.

公开(公告)号：US20200286921A1

公开(公告)日：2020-09-10

申请号：US16701706

申请日：2019-12-03

Applicant: BOE Technology Group Co., Ltd.

Inventor： Dongni LIU ,  Minghua XUAN ,  Li XIAO ,  Detao ZHAO ,  Liang CHEN ,  Hao CHEN

IPC: H01L27/12 ,  H01L23/522 ,  H01L21/768 ,  H01L21/288

Abstract: An array substrate, a manufacturing method thereof and a display device are provided. A display unit is disposed on a first surface of a base substrate, and a driving circuit is disposed on a second surface of the base substrate opposite to the first surface, the driving circuit is electrically connected with the display unit through a signal connection structure in at least one via structure, a longitudinal section of the at least one via hole is a trapezoid, and a length of a bottom edge of the trapezoid at one side of the trapezoid close to the display unit is larger than a length of a bottom edge of the trapezoid at one side of the trapezoid away from the display unit.

公开(公告)号：US20200035158A1

公开(公告)日：2020-01-30

申请号：US15735793

申请日：2017-06-21

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji YANG ,  Xue DONG ,  Jing LV ,  Xiaochuan CHEN ,  Dongni LIU ,  Pengcheng LU ,  Lei WANG ,  Jie FU ,  Han YUE ,  Li XIAO

IPC: G09G3/3258 ,  G09G3/3283 ,  H01L27/32

Abstract: A pixel driving circuit, a method for driving the same and a display device are provided. The pixel driving circuit includes a driving transistor, a reset control unit, a charging-discharging unit, a compensation control unit and a light-emission control unit, the reset control unit is connected to a reset control signal output end, an initial signal output end and a control node respectively, a gate electrode of the driving transistor is connected to the control node, the compensation control unit is connected to a compensation control signal output end, the light-emission control unit is connected to a high level output end, a main light-emission control line, a first electrode of the driving transistor, a second electrode of the driving transistor, N secondary light-emission control lines and N light-emission elements respectively.

公开(公告)号：US20190287455A1

公开(公告)日：2019-09-19

申请号：US16098235

申请日：2018-04-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pengcheng LU ,  Xiaochuan CHEN ,  Minghua XUAN ,  Shengji YANG ,  Lei WANG ,  Li XIAO ,  Dongni LIU ,  Jie FU ,  Han YUE ,  Jian GAO ,  Changfeng LI

IPC: G09G3/3225 ,  G09G3/32

Abstract: A pixel circuit and a driving method thereof, display panel and a display device are disclosed. The pixel circuit includes an input control sub-circuit, a switch control sub-circuit, a latch sub-circuit and a light-emitting sub-circuit. The input control sub-circuit writes a data signal into a first node under control of the gate signal terminal. The switch control sub-circuit conducts a first terminal or a second terminal of the latch sub-circuit with the first node under control of a switch signal control terminal. The latch sub-circuit outputs a high-level signal to the first node, when the first node is conductive with the first terminal and outputs a low-level signal to the first node, when the first node is conductive with the second terminal. The light-emitting sub-circuit emits light when the first node is supplied with the high-level signal.