公开(公告)号：US20220343835A1

公开(公告)日：2022-10-27

申请号：US17433244

申请日：2021-02-07

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

Inventor： Ning CONG ,  Minghua XUAN ,  Can ZHANG ,  Ming YANG ,  Can WANG ,  Angran ZHANG ,  Hao CHEN ,  Xiaochuan CHEN

IPC: G09G3/32

Abstract: A pixel circuit, a drive method, a display substrate, and a display device are provided. The pixel circuit includes a light emitting device, a current supply sub-circuit, and a time control sub-circuit. The current supply sub-circuit is connected to a scanning signal terminal, a data signal terminal, a light emitting control terminal, a first power voltage terminal, the time control sub-circuit, and the light emitting device, and is configured to receive a data voltage of the data signal terminal and provide a drive current for the light emitting device. The time control sub-circuit is connected to the scanning signal terminal, a time length signal terminal, a second power voltage terminal, a direct current control signal terminal, and a direct current voltage terminal, and is configured to receive a time length voltage of the time length signal terminal and a direct current voltage input by the direct current voltage terminal.

公开(公告)号：US20220139322A1

公开(公告)日：2022-05-05

申请号：US16956200

申请日：2019-08-14

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Can WANG ,  Han YUE ,  Can ZHANG ,  Minghua XUAN ,  Ming YANG

IPC: G09G3/3241

Abstract: Disclosed are a pixel circuit and a driving method thereof, an array substrate and a display apparatus. The pixel circuit includes a pixel sub-circuit. The pixel sub-circuit includes a first adjusting circuit and a second adjusting circuit. The first adjusting circuit is configured to receive a first data signal and a light emitting control signal to control a magnitude of a driving current used for driving a light emitting element to emit light; the second adjusting circuit is configured to receive a second data signal and a time control signal to control a time duration in which the driving current is applied to the light emitting element; and the time control signal changes within a time period during which the light emitting control signal allows the driving current to be generated. The pixel circuit can control the time duration in which the driving current is applied to the light emitting element, so that the light emitting element can realize display of various grayscales by controlling the light emitting time of the light emitting element, on the premise that the light emitting element operates at a relatively high current density.

公开(公告)号：US20220139297A1

公开(公告)日：2022-05-05

申请号：US16955171

申请日：2019-07-18

Applicant: BOE Technology Group Co., Ltd.

Inventor： Ming YANG ,  Ning CONG ,  Minghua XUAN ,  Can ZHANG ,  Xiaochuan CHEN ,  Can WANG ,  Han YUE ,  Jiao ZHAO ,  Angran ZHANG

IPC: G09G3/32

Abstract: Embodiments of the present disclosure disclose a drive circuit, a driving method thereof and a display device. The drive circuit includes: a current control circuit, configured to provide a drive signal to a device to be driven according to a signal of a data signal terminal; a first transistor, electrically connected between the current control circuit and the device to be driven; and a duration control circuit, electrically connected with a gate of the first transistor, and configured to provide a light-emitting duration modulating signal to the gate of the first transistor according to a combined action of signals of a scanning signal terminal, a light-emitting control signal terminal, a duration control signal terminal and a reference voltage signal terminal, to control a conduction duration of the first transistor.

公开(公告)号：US20220005403A1

公开(公告)日：2022-01-06

申请号：US16475086

申请日：2019-01-07

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Han YUE ,  Xiaochuan CHEN ,  Minghua XUAN ,  Can WANG ,  Can ZHANG ,  Ning CONG ,  Ming YANG

IPC: G09G3/32

Abstract: A pixel circuit includes a current control circuit, a time control circuit, and a light-emitting component, which are electrically coupled to one another in series along a common passage path of a driving current. The current control circuit is configured to control an intensity of the driving current according to a display data signal received thereby. The time control circuit is configured to control a passage time of the driving current according to a time data signal and a switch control signal received thereby. The light-emitting component is configured to emit a light according to the intensity and the passage time of the driving current.

公开(公告)号：US20210407408A1

公开(公告)日：2021-12-30

申请号：US16763219

申请日：2019-11-01

Applicant: BOE Technology Group Co., Ltd.

Inventor： Ming YANG ,  Ning CONG ,  Han YUE ,  Can ZHANG ,  Can WANG ,  Jiao ZHAO ,  Angran ZHANG ,  Minghua XUAN ,  Xiaochuan CHEN

IPC: G09G3/3233 ,  G09G3/00 ,  G09G3/3291

Abstract: A pixel circuit and driving method are provided. The pixel circuit includes a light emitting device having a first terminal and a second terminal; a driving circuit, electrically connected to the first terminal of the light emitting device, for providing power to the light emitting device; a voltage comparator for generating a pulse width modulated signal having a duty cycle based on a data voltage and a reference voltage; an offset voltage detecting circuit, electrically connected to an output terminal of the voltage comparator, for detecting an input offset voltage of the voltage comparator; and a data voltage compensation circuit, electrically connected to the offset voltage detecting circuit, for compensating the data voltage according to the input offset voltage detected.

公开(公告)号：US20210249634A1

公开(公告)日：2021-08-12

申请号：US16973005

申请日：2020-03-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Can WANG ,  Can ZHANG ,  Han YUE ,  Ming YANG ,  Ning CONG ,  Jiao ZHAO ,  Minghua XUAN

IPC: H01L51/52

Abstract: The present disclosure provides a display assembly and a virtual reality display device. The display assembly includes an electroluminescent element, a packaging layer and a light converging layer arranged sequentially. The light converging layer is configured to converge light emitted by the electroluminescent element and transmitted through the packaging layer. The electroluminescent element includes a plurality of pixels, the light converging layer is tightly attached to the packaging layer, and an orthogonal projection of each pixel onto a surface of the packaging layer to which the light converging layer is tightly attached is completely covered by the light converging layer.

公开(公告)号：US20210202883A1

公开(公告)日：2021-07-01

申请号：US16063951

申请日：2017-11-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Can ZHANG

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

Abstract: A display substrate, a manufacturing method thereof, and a display device are provided. The display substrate includes: a base substrate; an anode structure, disposed on the base substrate; a light emitting layer, disposed on a side of the anode structure away from the base substrate; and a cathode layer, disposed on a side of the light emitting layer away from the base substrate, the anode structure includes a reflective layer and an inorganic layer disposed on a side of the reflective layer away from the base substrate, the cathode layer includes a transflective layer, and the inorganic layer is configured to adjust a distance between the reflective layer and the transflective layer.

公开(公告)号：US20210097931A1

公开(公告)日：2021-04-01

申请号：US16839590

申请日：2020-04-03

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Han YUE ,  Minghua XUAN ,  Can ZHANG ,  Can WANG ,  Ning CONG ,  Xiaochuan CHEN

IPC: G09G3/325 ,  G09G3/3291 ,  G09G3/36

Abstract: A pixel driving circuit includes a current control circuit and a time control circuit, the current control circuit controls to generate a driving current, and outputs the driving current through a driving current output terminal, the time control circuit includes a first data writing-in circuit and a driving time control circuit. The first data writing-in circuit writes a first data voltage provided by a first data line to the driving time control circuit under the control of a first gate driving signal provided by a first gate line. The driving time control circuit is connected to a reference voltage terminal, the current control circuit, the first data writing-in circuit, and a light emitting element, and controls a light emitting time period of the light emitting element based on the reference voltage and the first data voltage, the reference voltage terminal is used to provide the reference voltage.

公开(公告)号：US20200279531A1

公开(公告)日：2020-09-03

申请号：US16547820

申请日：2019-08-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Ming YANG ,  Minghua XUAN ,  Can ZHANG ,  Xiandong MENG ,  Xiaochuan CHEN ,  Wenqing ZHAO

IPC: G09G3/3258 ,  H01L27/32 ,  G09G3/3266

Abstract: A display panel and a display device are provided. The display panel includes a plurality of pixel regions, each pixel region including a pixel island and a transparent region located on a periphery of the pixel island. The pixel island includes K active display area, a distance between adjacent ones of the K active display area in the pixel island is less than a distance between pixel islands of adjacent ones of the plurality of pixel regions. Each of the plurality of pixel regions includes K sub-regions with approximately equal areas, K pixel driving circuits are respectively disposed in the K sub-regions, the K pixel driving circuits are configured to respectively drive the K active display areas, and the K is an integer greater than or equal to 2.

公开(公告)号：US20200066942A1

公开(公告)日：2020-02-27

申请号：US16440115

申请日：2019-06-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Can WANG ,  Can ZHANG ,  Han YUE ,  Ming YANG ,  Ning CONG ,  Minghua XUAN ,  Xiaochuan CHEN

IPC: H01L33/46 ,  H01L27/15 ,  H01L33/40 ,  H01L33/00

Abstract: An inorganic light-emitting diode display panel and manufacturing method thereof and a display device are provided. The inorganic light-emitting diode display panel includes: a base substrate; a microcavity structure and an inorganic light-emitting diode which are disposed on the base substrate. The microcavity structure includes a reflective layer, a semi-reflective layer and a dielectric layer located between the reflective layer and the semi-reflective layer; the inorganic light-emitting diode includes a light-emitting layer, and the light-emitting layer is located in the dielectric layer; and a distance between the reflective layer and the semi-reflective layer is in a same order of magnitude as a wavelength of light emitted by the inorganic light-emitting diode.