Patents by Inventor Lujiang HUANGFU

Lujiang HUANGFU 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: 11978396
    Abstract: Embodiments of the present disclosure provide an array substrate and related display panel and display device. An array substrate, comprises: a substrate; a plurality of sub-pixels arranged in multiple rows and multiple columns provided on the substrate, at least one of the plurality of sub-pixels comprising pixel circuits, each of the pixel circuits comprising a driving circuit, a voltage stabilizing circuit, and a driving reset circuit, wherein the driving circuit is configured to provide a driving current to a light-emitting device, the voltage stabilizing circuit comprises a first voltage stabilizing circuit and a second voltage stabilizing circuit, the first voltage stabilizing circuit is configured to conduct a control terminal of the driving circuit with the driving reset circuit, the second voltage stabilizing circuit is configured to stabilize a voltage at the control terminal of the driving circuit, and the driving reset circuit is configured to reset the control terminal of the driving circuit.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: May 7, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Libin Liu, Li Wang, Yu Feng, Lujiang Huangfu
  • Patent number: 11957019
    Abstract: A pixel arrangement structure, a display method and a preparing method of a pixel arrangement structure, and a display substrate are provided. The pixel arrangement structure includes first color sub-pixel blocks, second color sub-pixel blocks, and third color sub-pixel blocks. Each of the plurality of minimum repeating regions has a rectangular shape and includes a first virtual rectangle, and the first virtual rectangle includes one first color sub-pixel block, one second color sub-pixel block and one third color sub-pixel block. Any edge of the first virtual rectangle has a non-zero included angle with a first direction, and the first direction is a row direction or a column direction. The first color sub-pixel block is on a perpendicular bisector of the first edge, the second color sub-pixel block and the third color sub-pixel block are on different sides of the perpendicular bisector of the first edge.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: April 9, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongli Wang, Lujiang Huangfu
  • Patent number: 11950468
    Abstract: The present disclosure provides a display panel, a method of manufacturing the same, and a display device. The initialization signal line layer in the display panel includes an initialization signal line pattern arranged in each of the plurality of sub-pixel areas; the first auxiliary signal line layer includes a plurality of first auxiliary signal line patterns corresponding to the plurality of sub-pixel areas in a one-to-one manner, and the first auxiliary signal line pattern is coupled to an initialization signal line pattern in a corresponding sub-pixel area, at least part of the first auxiliary signal line pattern extends along the first direction, and first auxiliary signal line patterns corresponding to sub-pixel areas in a same row of sub-pixel areas are sequentially coupled.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: April 2, 2024
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yipeng Chen, Lujiang Huangfu, Libin Liu
  • Publication number: 20240078956
    Abstract: The present disclosure relates to an array substrate and a display device. The array substrate includes a plurality of pixel units arranged in an array, each of the pixel units including a plurality of sub-pixels. The array substrate includes: a plurality of power lines which are arranged in a conductive layer on a base substrate, are arranged at intervals along a first direction and extend along a second direction, and are used for providing power signals to the sub-pixels; and a plurality of power leads which are arranged in another conductive layer, are arranged at intervals along the second direction and extend along the first direction. Projections of at least one of the power lines and at least one of the power leads on the base substrate intersect, and the projections of the power lines and the power leads on the base substrate form a grid-like structure.
    Type: Application
    Filed: October 26, 2023
    Publication date: March 7, 2024
    Inventors: Long HAN, Libin LIU, Lujiang HUANGFU
  • Patent number: 11908404
    Abstract: The present disclosure provides a display panel, a pixel circuit and a method for driving the pixel circuit, the pixel circuit includes: a storage capacitor circuit; a light-emitting element; a driving transistor; a reset circuit, the reset circuit is configured to receive a reset control signal and reset a first node and a second node according to the reset control signal, or receive a writing control signal and/or a timing sequence control signal of an adjacent pixel row and reset the first node and the second node according to the writing control signal and/or the timing sequence control signal of the adjacent pixel row; a threshold compensation circuit, configured to receive a compensation control signal and write a compensation voltage into the first node according to the compensation control signal; a writing circuit; and a light-emitting control circuit.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: February 20, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lujiang Huangfu, Libin Liu, Can Zheng
  • Patent number: 11910684
    Abstract: A pixel arrangement structure, a display method and a preparing method of a pixel arrangement structure, and a display substrate are provided. The pixel arrangement structure includes first color sub-pixel blocks, second color sub-pixel blocks, and third color sub-pixel blocks. Each of the plurality of minimum repeating regions has a rectangular shape and includes a first virtual rectangle, and the first virtual rectangle includes one first color sub-pixel block, one second color sub-pixel block and one third color sub-pixel block. Any edge of the first virtual rectangle has a non-zero included angle with a first direction, and the first direction is a row direction or a column direction. The first color sub-pixel block is on a perpendicular bisector of the first edge, the second color sub-pixel block and the third color sub-pixel block are on different sides of the perpendicular bisector of the first edge.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: February 20, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongli Wang, Lujiang Huangfu
  • Patent number: 11903289
    Abstract: A display panel, a method of manufacturing the same, and a display device are provided. In the display panel, sub-pixel areas in a same row along a first direction are divided into a plurality of sub-pixel area groups independent from each other, and each sub-pixel area group includes at least two adjacent sub-pixel areas, a connection layer includes a connection pattern arranged in each sub-pixel area, and the connection pattern is coupled to the initialization signal line pattern in the sub-pixel area wherein the connection pattern is located, connection patterns located in a same sub-pixel area group are sequentially coupled along the first direction to form the connection portion; at least part of a first auxiliary signal line layer is located in an anode spacing area, and is insulated from an anode pattern, the connection pattern in each sub-pixel area group is coupled to the first auxiliary signal line layer.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: February 13, 2024
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yipeng Chen, Lujiang Huangfu, Libin Liu
  • Patent number: 11900853
    Abstract: A display substrate, a method for driving the same, a display device, and a high-precision metal mask are provided. The display area includes a first display sub-area in which pixels are distributed at a high density (e.g., a high resolution), and a second display sub-area in which pixels are distributed at a low density (e.g., a low resolution), and a transition display sub-area, with a distribution density of pixels (a resolution) between the distribution density of pixels in the first display sub-area and a distribution density of pixels in the second display sub-area, is arranged between the first display sub-area and the second display sub-area.
    Type: Grant
    Filed: March 24, 2023
    Date of Patent: February 13, 2024
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Zhenzhen Li, Lujiang Huangfu, Shanshan Bai, Kuo Sun
  • Publication number: 20240038167
    Abstract: Provided are a pixel circuit and a driving method therefor, and a display apparatus. The pixel circuit includes a drive transistor, a reset circuit, a data writing circuit, a storage capacitor circuit, a threshold value compensation circuit, a conduction control circuit, a light-emitting control circuit, and a light-emitting device; the conduction control circuit is configured to: conduct the threshold value compensation circuit with the gate of the drive transistor, and conduct the reset circuit with the gate of the drive transistor at the reset stage, the threshold value detecting stage and the data writing stage; and cut off a conducting state of the threshold value compensation circuit with the gate of the drive transistor, and cut off a conducting state of the reset circuit with the gate of the drive transistor at the driving stage; where the conduction control circuit includes an oxide semiconductor thin film transistor.
    Type: Application
    Filed: November 30, 2020
    Publication date: February 1, 2024
    Inventors: Lujiang HUANGFU, Li WANG, Jianchao ZHU, Libin LIU
  • Patent number: 11881176
    Abstract: A pixel circuit, a display panel, a display device, and a driving method. The pixel circuit includes a light emitting element, a driving transistor, a light emitting control circuit, a reset circuit, a threshold compensation circuit, a first data write circuit, and an initializing circuit. The reset circuit includes a first transistor, the first data write circuit includes a third transistor, and a channel length-width ratio of the first transistor is greater than a channel length-width ratio of the third transistor.
    Type: Grant
    Filed: January 6, 2023
    Date of Patent: January 23, 2024
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yi Zhang, Kai Zhang, Minghua Xuan, Young Yik Ko, Lujiang Huangfu
  • Publication number: 20240023375
    Abstract: An organic light emitting diode display substrate, comprises: a base substrate, and a first data line, a driving thin film transistor and an energy storage capacitor, wherein the energy storage capacitor comprises a first capacitor plate and a second capacitor plate disposed opposite to each other, and the second capacitor plate is electrically connected to a gate of the driving thin film transistor, in a direction away from the base substrate, the first capacitor plate is disposed between the first data line and the second capacitor plate. The display substrate further comprises a shielding portion. The shielding portion is between the second capacitor plate and the first data line in a direction perpendicular to the base substrate, and an orthographic projection of the shielding portion on the base substrate at least partially overlap an orthographic projection of the first data line on the base substrate.
    Type: Application
    Filed: September 26, 2023
    Publication date: January 18, 2024
    Inventors: Yipeng Chen, Li Wang, Lujiang Huangfu
  • Patent number: 11875747
    Abstract: A pixel driving circuit includes: an energy storage sub-circuit, a reset sub-circuit, a compensation sub-circuit, a driving sub-circuit, and a current leakage suppression sub-circuit. The energy storage sub-circuit is coupled to a first node and a second node. The reset sub-circuit is coupled to the second node, a first scan timing signal terminal, and an initialization signal terminal. The compensation sub-circuit is coupled to the second node, a third node, and a second scan timing signal terminal. The driving sub-circuit is coupled to the second node, the third node, and a first voltage signal terminal. The current leakage suppression sub-circuit is coupled to the energy storage sub-circuit, the reset sub-circuit, and the compensation sub-circuit. The current leakage suppression sub-circuit is configured to suppress current leakage of the energy storage sub-circuit in a process of generating and transmitting the driving signal by the driving sub-circuit.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: January 16, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lujiang Huangfu, Li Wang, Can Zheng, Tian Dong, Libin Liu
  • Patent number: 11837169
    Abstract: The present disclosure provides a pixel circuit including: a driving transistor and a voltage control circuit; wherein in the voltage control circuit, at least one transistor directly coupled to a gate of the driving transistor is an oxide thin film transistor. The disclosure also provides a display substrate and a display apparatus.
    Type: Grant
    Filed: May 15, 2022
    Date of Patent: December 5, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yipeng Chen, Libin Liu, Lujiang Huangfu
  • Patent number: 11837142
    Abstract: The present disclosure relates to an array substrate and a display device. The array substrate includes a plurality of initialization signal lines and a plurality of connection lines. The initialization signal lines are arranged in a conductive layer, extend along a first direction and are arranged at intervals along a second direction, and are used to provide initialization signals to the sub-pixels. The connection lines are arranged in another conductive layer, extend along the second direction and are arranged at intervals along the first direction. Projections of at least one initialization signal line and at least one connection line on the base substrate intersect, and the at least one initialization signal line and the at least one connection line are connected through a via hole, so that the projections of the initialization signal lines and the connection lines on the substrate form a grid-like structure.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: December 5, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Long Han, Libin Liu, Lujiang Huangfu
  • Publication number: 20230354668
    Abstract: The present disclosure provides a display substrate, a manufacturing method thereof, a display apparatus and a mask. In the display substrate, a pixel unit at least includes a first sub-pixel, a second sub-pixel and a third sub-pixel, a luminance brightness ratio of the first sub-pixel is greater than a luminance brightness ratio of the second sub-pixel, and the luminance brightness ratio of the second sub-pixel is greater than a luminance brightness ratio of the third sub-pixel. The first sub-pixel and the second sub-pixel are located in a first column, the third sub-pixel is located in a second column, and the plurality of pixel units includes a plurality of first pixel units and a plurality of second pixel units.
    Type: Application
    Filed: November 10, 2021
    Publication date: November 2, 2023
    Inventors: Yansong LI, Shanshan BAI, Lujiang HUANGFU
  • Publication number: 20230351956
    Abstract: Embodiments of the present disclosure provide an array substrate and related display panel and display device. An array substrate, comprises: a substrate; a plurality of sub-pixels arranged in multiple rows and multiple columns provided on the substrate, at least one of the plurality of sub-pixels comprising pixel circuits, each of the pixel circuits comprising a driving circuit, a voltage stabilizing circuit, and a driving reset circuit, wherein the driving circuit is configured to provide a driving current to a light-emitting device, the voltage stabilizing circuit comprises a first voltage stabilizing circuit and a second voltage stabilizing circuit, the first voltage stabilizing circuit is configured to conduct a control terminal of the driving circuit with the driving reset circuit, the second voltage stabilizing circuit is configured to stabilize a voltage at the control terminal of the driving circuit, and the driving reset circuit is configured to reset the control terminal of the driving circuit.
    Type: Application
    Filed: March 24, 2021
    Publication date: November 2, 2023
    Inventors: Libin LIU, Li WANG, Yu FENG, Lujiang HUANGFU
  • Patent number: 11805682
    Abstract: An organic light emitting diode display substrate, comprises: a base substrate, and a first data line, a driving thin film transistor and an energy storage capacitor, wherein the energy storage capacitor comprises a first capacitor plate and a second capacitor plate disposed opposite to each other, and the second capacitor plate is electrically connected to a gate of the driving thin film transistor, in a direction away from the base substrate, the first capacitor plate is disposed between the first data line and the second capacitor plate. The display substrate further comprises a power line and a voltage equalizing line which are electrically connected, the power line extends in a first direction which is substantially parallel to a direction in which the first data line extends, and the voltage equalizing line extends in a second direction. A method of manufacturing the display substrate and a display device are also provided.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: October 31, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yipeng Chen, Li Wang, Lujiang Huangfu
  • Publication number: 20230345788
    Abstract: The present disclosure provides a pixel arrangement structure, a fine metal mask set and a display apparatus. The pixel arrangement structure includes a plurality of sub-pixel repetition units along a first direction or a second direction. The plurality of sub-pixel repetition units each form a plurality of pixel units. The sub-pixel repetition units each include one or more first color sub-pixels, one or more second color sub-pixels and one or more third color sub-pixels. Each of the first color sub-pixels and each of the second color sub-pixels independently belong to one pixel unit respectively, and each of the third color sub-pixels is shared by two pixel units. The first direction intersects with the second direction.
    Type: Application
    Filed: October 22, 2021
    Publication date: October 26, 2023
    Inventors: Qian XU, Peng XU, Lujiang HUANGFU
  • Patent number: 11800752
    Abstract: A pixel structure includes: a pixel definition layer having a first side and a second side which are opposite to each other in a thickness direction of the pixel definition layer, the pixel definition layer including a pixel opening having sidewalls; an island-shaped portion disposed in the pixel opening of the pixel definition layer and spaced apart from the sidewalls of the pixel opening, the island-shaped portion having sidewalls, and the sidewalls of the pixel opening and the sidewalls of the island-shaped portion defining a ring-shaped pixel groove; and a light emitting unit, at least a part of which is disposed in the ring-shaped pixel groove.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: October 24, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lujiang Huangfu, Xing Fan, Hao Gao, Hao Zhang, Qiuhua Meng, Na Li, Yansong Li
  • Patent number: 11790850
    Abstract: A pixel driving circuit includes a reset sub-circuit, a compensation sub-circuit, a light-emitting control sub-circuit and a driving sub-circuit. The reset sub-circuit is configured to transmit an initialization signal received from an initialization signal terminal to the light-emitting control sub-circuit. The light-emitting control sub-circuit is configured to transmit the initialization signal to the first node. The compensation sub-circuit is configured to transmit the initialization signal from the first node to a second node so as to reset a voltage of the second node. The driving sub-circuit is configured to open a conductive path from a first voltage signal terminal to the initialization signal terminal during a process of resetting the voltage of the second node.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: October 17, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lujiang Huangfu, Li Wang, Can Zheng, Libin Liu