Patents by Inventor Minghua XUAN

Minghua XUAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11508298
    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.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: November 22, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Liang Chen, Lei Wang, Dongni Liu, Li Xiao, Xiaochuan Chen, Minghua Xuan, Shengji Yang, Pengcheng Lu, Detao Zhao, Ning Cong
  • Patent number: 11508294
    Abstract: The present application provides a pixel circuit, a pixel driving method and a display device. The pixel circuit is to be coupled to a to-be-driven element. The pixel circuit includes a first energy storage circuit, a driving circuit, a light-emitting control circuit, a data writing circuit, and a compensation control circuit. The compensation control circuit is configured to, under control of a third control signal, control conduction between the first node and the first terminal of the driving circuit, and control conduction between the second node and the second terminal of the driving circuit.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: November 22, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Jiao Zhao, Seungwoo Han, Haoliang Zheng, Minghua Xuan, Li Xiao, Dongni Liu, Liang Chen, Hao Chen
  • Patent number: 11508289
    Abstract: The present disclosure provides a pixel driving circuit, a method of driving the same and a display device. The pixel driving circuit includes a light-emission time control sub-circuitry, a first energy storage sub-circuitry, a first resetting sub-circuitry, a first light-emission control sub-circuitry, a time control data write-in sub-circuitry and a data control sub-circuitry. The time control data write-in sub-circuitry controls a time control data line to be electrically connected to a second end of the first energy storage sub-circuitry under the control of a first gate driving signal. The light-emission time control sub-circuitry controls a first end of the light-emission time control sub-circuitry to be electrically connected to a second end of the light-emission time control sub-circuitry.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: November 22, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Minghua Xuan, Xiaochuan Chen, Dongni Liu
  • Patent number: 11501713
    Abstract: The disclosure provides a pixel circuit and a driving method thereof, a display device. The pixel circuit includes: a storage capacitor having a first terminal coupled to a first node and a second terminal coupled to a second node; a light emitting diode having a first electrode coupled to a third node and a second electrode coupled to a second power supply terminal; a data writing circuit configured to write a data voltage into the second node; a compensation circuit configured to write a voltage of the third node, as a compensation voltage, into the first node; a driving transistor having a control terminal coupled to the first node, a first electrode coupled to a first power supply terminal and a second electrode coupled to the light emitting control circuit; a light emitting control circuit configured to control the light emitting diode to emit light.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: November 15, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Han Yue, Can Zhang, Can Wang, Minghua Xuan
  • Patent number: 11495718
    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.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: November 8, 2022
    Assignee: Beijing Boe Technology Development Co., Ltd.
    Inventors: Zhanfeng Cao, Yingwei Liu, Ke Wang, Dongni Liu, Minghua Xuan, Guangcai Yuan, Lei Chen, Xue Dong
  • Publication number: 20220351683
    Abstract: A pixel circuit includes a driving circuit, a first control circuit and a second control circuit. The driving circuit is configured to receive a data signal in response to a scan signal, and generate, in response to a first enable signal, a driving signal according to a first voltage and the data signal. The first control circuit is configured to: receive a first input signal in response to a first control signal, and transmit a third input signal in response to the first input signal; and receive a second input signal in response to a second control signal, and transmit a second enable signal in response to the second input signal. The second control circuit is configured to transmit the driving signal to an element to be driven in response to one of the third input signal and the second enable signal.
    Type: Application
    Filed: November 3, 2020
    Publication date: November 3, 2022
    Inventors: Li XIAO, Haoliang ZHENG, Hao CHEN, Minghua XUAN, Dongni LIU, Seungwoo HAN, Liang CHEN, Jiao ZHAO, Xue DONG
  • Publication number: 20220343835
    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.
    Type: Application
    Filed: February 7, 2021
    Publication date: October 27, 2022
    Inventors: Ning CONG, Minghua XUAN, Can ZHANG, Ming YANG, Can WANG, Angran ZHANG, Hao CHEN, Xiaochuan CHEN
  • Patent number: 11482586
    Abstract: An array substrate is provided. The array substrate includes a data line; a first voltage supply line; a second voltage supply line; and a pixel driving circuit. The pixel driving circuit includes one or more transistors in a first group and one or more transistors in a second group. A source electrode and a drain electrode of at least one transistor in the first group, the data line, the first voltage supply line, and the second voltage supply line are in a same layer. A source electrode and a drain electrode of at least one transistor in the second group are in a layer different from the first voltage supply line and the second voltage supply line.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: October 25, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Dongni Liu, Minghua Xuan, Liang Chen
  • Publication number: 20220335889
    Abstract: A shift register (SR) includes a voltage control circuit (110) and a bias compensation circuit (120). The voltage control circuit (110) is configured to control a voltage at a first node (Output) to be a first voltage or a second voltage. The bias compensation circuit (120) is configured to: when the voltage at the first node (Output) is the first voltage, transmit a first signal received by a first signal terminal (VDD-A) to a first signal output terminal (EM1), and transmit a second signal received by a second signal terminal (VDD-B) to a second signal output terminal (EM2); and in response to the voltage at the first node (Output) being the second voltage, transmit a signal received by a first voltage terminal (LVGL1) to the first signal output terminal (EM1) and the second signal output terminal (EM2).
    Type: Application
    Filed: March 18, 2021
    Publication date: October 20, 2022
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Haoliang ZHENG, Minghua XUAN, Dongni LIU, Zhenyu ZHANG, Li XIAO, Liang CHEN, Hao CHEN, Jiao ZHAO, Lijun YUAN, Yi OUYANG, Qi QI
  • Patent number: 11475831
    Abstract: A display panel, a method of driving a display panel, and a display device are provided. The display panel includes a plurality of sub-pixel units arranged in an array, a plurality of compensation driving circuits and a plurality of light emitting control lines; sub-pixel units in each row are divided into a plurality of compensation light emitting groups, the plurality of compensation light emitting groups include a plurality of first compensation light emitting groups, the first compensation light emitting groups each include N sub-pixel units that are adjacent, and light emitting circuits of the N sub-pixel units that are adjacent are connected to one same compensation driving circuit; the light emitting circuits of the N sub-pixel units that are adjacent of each of the first compensation light emitting groups are respectively connected to N light emitting control lines that are different.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: October 18, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Minghua Xuan, Lei Wang, Li Xiao, Xiaochuan Chen
  • Patent number: 11475864
    Abstract: A display panel, a method of manufacturing the display panel, a method of driving the display panel and a display device are provided. The display panel includes an array substrate and a plurality of micro light-emitting diodes arranged on the array substrate, and further includes: a photoelectric conversion structure in a one-to-one correspondence with a micro light-emitting diode, the photoelectric conversion structure is located on a side of the corresponding micro light-emitting diode facing the array substrate, connected to the corresponding micro light-emitting diode, and configured to convert a received light signal emitted by the micro light-emitting diode into an electrical signal, and charge the corresponding micro light-emitting diode by using the electrical signal. The display panel is used for display.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: October 18, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Can Zhang, Han Yue, Minghua Xuan
  • Publication number: 20220327996
    Abstract: A pixel driving circuit includes: a driving sub-circuit configured to supply a driving signal to an element to be driven; a detection sub-circuit electrically connected to a detection control signal terminal and a detection node and configured to detect a voltage value of the detection node in response to a detection control signal received at the detection control signal terminal. The detection node is equivalent to a point on a connection line between the driving sub-circuit and the element to be driven.
    Type: Application
    Filed: September 5, 2019
    Publication date: October 13, 2022
    Inventors: Han YUE, Minghua XUAN, Can ZHANG, Can WANG, Ming YANG, Ning CONG, Angran ZHANG, Jiao ZHAO, Xiaochuan CHEN
  • Patent number: 11468819
    Abstract: The present disclosure relates to the field of display technologies, and in particular, to a shift register circuit and a display device. The shift register circuit may include a plurality of GOAs for outputting scan signals to a plurality of pixel driving circuits and a plurality of EOAs for outputting control signals to the plurality of pixel driving circuits, where the GOAs and the EOAs are alternately arranged in a straight line.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: October 11, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Dongni Liu, Minghua Xuan, Lei Wang, Xiaochuan Chen, Liang Chen, Li Xiao, Detao Zhao, Shengji Yang, Pengcheng Lu, Zheng Fang
  • Patent number: 11468825
    Abstract: The present disclosure provides a pixel circuit including: a current control circuit and a time control circuit, the time control circuit includes: a first resetting sub-circuit configured to write a reference voltage and a first initialization voltage to a first node and a second node, respectively; a first data writing sub-circuit configured to write a first data voltage to the first node; a first threshold compensation sub-circuit configured to perform threshold compensation on a transistor within a switch sub-circuit; a ramp writing sub-circuit configured to write a preset ramp signal to the first node; and the switch sub-circuit configured to control electrical coupling and decoupling between a third node and a fourth node. The present disclosure further provides a driving method of the pixel circuit and a display device.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: October 11, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Minghua Xuan, Qi Qi, Jing Liu, Han Yue, Dongni Liu
  • Publication number: 20220319413
    Abstract: A pixel driving circuit includes a driving signal control sub-circuit and a driving duration control sub-circuit. The driving signal control sub-circuit is configured to provide a driving signal to the driving duration control sub-circuit under control of a first scanning signal terminal and a enable signal terminal. The driving signal is related to a first data signal received at a first data signal terminal and a first voltage signal received at a first voltage signal terminal. The driving duration control sub-circuit is configured to transmit the driving signal to the element to be driven under control of a second scanning signal terminal and a enable signal terminal. A duration for which the driving signal is transmitted to the element to be driven is related to a second data signal received at a second data signal terminal.
    Type: Application
    Filed: September 3, 2019
    Publication date: October 6, 2022
    Inventors: Minghua XUAN, Xiaochuan CHEN, Dongni LIU
  • Publication number: 20220319452
    Abstract: A light emitting substrate, a method of driving a light emitting substrate, and a display device are provided. The light emitting substrate includes a plurality of light emitting units arranged in an array. Each light emitting unit includes a driving circuit, a plurality of light emitting elements, and a driving voltage terminal. The plurality of light emitting elements are sequentially connected in series and connected between the driving voltage terminal and the output terminal of the driving circuit. The driving circuit is configured to output a relay signal through the output terminal in a first period according to a first input signal received by the first input terminal and a second input signal received by the second input terminal, and supply a driving signal to the plurality of light emitting elements sequentially connected in series through the output terminal in a second period.
    Type: Application
    Filed: March 17, 2020
    Publication date: October 6, 2022
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Ming Yang, Wei Hao, Feifei Wang, Minghua Xuan, Zhenyu Zhang, Xiaochuan Chen, Lingyun Shi
  • Publication number: 20220319379
    Abstract: A pixel driving circuit for generating a pixel luminance with multiple grayscale levels is provided. The pixel driving circuit includes a data input sub-circuit configured to input data signal once in a respective scan of n scans in one cycle time for displaying one frame of image; a latch sub-circuit configured to latch a first voltage level in-phase with the data signal at the first node and a second voltage level out-of-phase with the data signal at a second node; a data output sub-circuit configured to output a drive signal at a low voltage level under control of the first voltage level or at a high voltage level under control of the second voltage level; and an emission-control sub-circuit configured to pass the drive signal to drive a light-emitting device in one partial time section of the respective scan of n scans.
    Type: Application
    Filed: June 17, 2022
    Publication date: October 6, 2022
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Minghua Xuan, Xiaochuan Chen, Han Yue
  • Publication number: 20220319417
    Abstract: The present disclosure provides a pixel driving circuit and a display panel. The pixel driving circuit includes: a data writing sub-circuit configured to transmit a data voltage signal to a first terminal of a driving sub-circuit in response to a first scanning signal; a threshold compensation sub-circuit configured to compensate for a threshold voltage of the driving sub-circuit in response to a second scanning signal; a storage sub-circuit configured to store the data voltage signal; the driving sub-circuit configured to provide a driving current for a light emitting device to be driven according to voltages of a first terminal and a control terminal of the driving sub-circuit; and a voltage maintaining sub-circuit configured to maintain the voltage of the control terminal of the driving sub-circuit when the voltage of the first terminal of the driving sub-circuit jumps.
    Type: Application
    Filed: September 28, 2020
    Publication date: October 6, 2022
    Inventors: Dongni LIU, Minghua XUAN, Haoliang ZHENG, Li XIAO, Liang CHEN, Zhenyu ZHANG, Jiao ZHAO, Hao CHEN
  • Publication number: 20220310011
    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.
    Type: Application
    Filed: January 13, 2021
    Publication date: September 29, 2022
    Inventors: Liang CHEN, Dongni LIU, Li XIAO, Minghua XUAN, Haoliang ZHENG, Zhenyu ZHANG, Hao CHEN, Jiao ZHAO, Qi QI
  • Publication number: 20220310018
    Abstract: A pixel driving circuit includes a data writing sub-circuit, a driving sub-circuit, and a control sub-circuit. The data writing sub-circuit is configured to: in response to a first scanning signal and a third scanning signal, write a first data signal into the driving sub-circuit; and in response to a second scanning signal and the third scanning signal, write a second data signal into the driving sub-circuit. The control sub-circuit is configured to, in response to an enable signal, connect a driving transistor to a first power supply voltage signal terminal and an element to be driven. The driving sub-circuit is configured to: according to the first data signal and a first power supply voltage signal, output a driving to signal; and according to the second data signal and the first power supply voltage signal, control an operating state of the element to be driven.
    Type: Application
    Filed: June 13, 2022
    Publication date: September 29, 2022
    Applicant: BOE TECHNOLOGY CROUP CO., LTD.
    Inventors: Dongni LIU, Minghua XUAN, Xiaochuan CHEN, Xue DONG, Haoliang ZHENG, Han YUE, Ning CONG