Patents by Inventor Hongfei Cheng

Hongfei Cheng 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).

  • Publication number: 20240411190
    Abstract: An array substrate and a display device are disclosed. The array substrate includes a base substrate, a plurality of gate lines and a plurality of data lines arranged to intersect each other on the base substrate, a pixel electrode arranged in a region defined by an adjacent gate line and an adjacent data line, and a thin film transistor arranged at an intersection of the gate lines and the data lines. A drain of the thin film transistor is connected with the pixel electrode through a via hole. The gate lines further include a widening portion between adjacent data lines. The widening portion comprises a recess structure. An orthogonal projection of the recess structure on the base substrate at least partly overlaps that of the drain of the thin film transistor on the base substrate.
    Type: Application
    Filed: August 21, 2024
    Publication date: December 12, 2024
    Inventors: Hongfei CHENG, Jianbo XIAN
  • Publication number: 20240395207
    Abstract: Provided are a pixel circuit, a driving method and a display apparatus. The pixel circuit includes: a light-emitting device (L); a driving transistor (MO) coupled to the light-emitting device and configured to generate, according to a data voltage, a driving current for driving the light-emitting device to emit light; a distributed capacitor (Cl), a first electrode of the distributed capacitor being coupled to a gate of the driving transistor, and a second electrode of the distributed capacitor bring coupled to a first electrode of the driving transistor; an initialization circuit (10) configured to initialize the gate of the driving transistor under control of a signal of a reset signal end (Re); a data compensation circuit (20) configured to input the data voltage under control of a signal of a scanning signal end (Sn) and compensate for a threshold voltage (Vth) of the driving transistor; and a light-emitting control circuit (30).
    Type: Application
    Filed: July 31, 2023
    Publication date: November 28, 2024
    Inventor: Hongfei CHENG
  • Patent number: 12114525
    Abstract: Disclosed are an OLED display panel and a display device. The OLED display panel includes a substrate, a plurality of light emitting components arranged in an array, and a light resistance structure between the light emitting components. The light resistance structure prevents the reflected light of the emergent light from the light emitting components, from emitting out from one side of the substrate between the light emitting components.
    Type: Grant
    Filed: April 11, 2020
    Date of Patent: October 8, 2024
    Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xueguang Hao, Yong Qiao, Xinyin Wu, Hongfei Cheng
  • Patent number: 12108640
    Abstract: Provided is an array substrate, including: a first conductive wire, a second conductive wire and a first electrostatic protection unit, wherein the first electrostatic protection unit comprises a first thin-film transistor and a first capacitor; wherein a gate of the first thin-film transistor is suspended and is connected to a first electrode of the first thin-film transistor via the first capacitor, the first electrode of the thin-film transistor is connected to the first conductive wire, and a second electrode of the first thin-film transistor is connected to the second conductive wire.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: October 1, 2024
    Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Hongfei Cheng, Xueguang Hao
  • Patent number: 12092934
    Abstract: An array substrate and a display device are disclosed. The array substrate includes a base substrate, a plurality of gate lines and a plurality of data lines arranged to intersect each other on the base substrate, a pixel electrode arranged in a region defined by an adjacent gate line and an adjacent data line, and a thin film transistor arranged at an intersection of the gate lines and the data lines. A drain of the thin film transistor is connected with the pixel electrode through a via hole. The gate lines further include a widening portion between adjacent data lines. The widening portion comprises a recess structure. An orthogonal projection of the recess structure on the base substrate at least partly overlaps that of the drain of the thin film transistor on the base substrate.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: September 17, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongfei Cheng, Jianbo Xian
  • Patent number: 12094409
    Abstract: Embodiments of the present disclosure provide a pixel circuitry, a drive method thereof, an array substrate and a display panel. The pixel circuitry may comprise a drive circuit, a data write circuit, an initialization circuit, a first light emission control circuit, a first storage circuit, a second storage circuit and a second light emission control circuit. The drive circuit may be coupled to a first node, a second node and a third node, and may provide a drive current to a light emitting device. The first storage circuit may store a voltage difference between the first voltage signal terminal and the second node. The second storage circuit may store a voltage difference between the first node and the second node.
    Type: Grant
    Filed: February 7, 2021
    Date of Patent: September 17, 2024
    Assignees: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongfei Cheng, Xueguang Hao
  • Patent number: 12013618
    Abstract: An array substrate (10) and a display device (16) are provided, and the array substrate includes a base substrate (1) and includes a pixel array (1) and an auxiliary conductive structure (3) which are on the base substrate (1); the pixel array includes a plurality of pixel units (2) arranged in an array and a plurality of pixel electrodes (21), and each of the plurality of pixel units (2) includes at least one of the plurality of pixel electrodes (21); the auxiliary conductive structure (3) surrounds at least one of the plurality of pixel electrodes (21) and is insulated from the plurality of pixel electrodes (21); a resistivity of a material of the auxiliary conductive structure (3) is less than or equal to a resistivity of a material of the at least one of the plurality of the pixel electrodes (21).
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: June 18, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jianbo Xian, Hongfei Cheng, Jian Xu, Yong Qiao
  • Patent number: 12002422
    Abstract: A display substrate and a display device. The display substrate includes a base substrate and a plurality of sub-pixels, a first power line and an electrical connection layer on the base substrate. Each sub-pixel includes a pixel circuit, and a plurality of sub-pixels are arranged in a plurality of rows and a plurality of columns along a first direction and a second direction. The sub-pixel is electrically connected with the light-emitting element through the electrical connection layer, and the portion, which is in the display region of the display substrate, of the electrical connection layer is not overlapped with the first power line in a direction perpendicular to the base substrate.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: June 4, 2024
    Assignees: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongfei Cheng, Xueguang Hao, Hui Li, Chen Xu, Pan Li
  • Patent number: 11943979
    Abstract: An array substrate and a fabrication method thereof, an array substrate motherboard, and a display device are disclosed. The array substrate includes a display region and a bonding region outside the display region. The array substrate further includes: a bonding electrode, located in the bonding region and spaced apart from an outer edge of the bonding region; and an electrostatic barrier line, the electrostatic barrier line has one end electrically connected with the bonding electrode, and the other end extends to the outer edge of the bonding region, and resistivity of the electrostatic barrier line is greater than resistivity of the bonding electrode.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: March 26, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Hongfei Cheng
  • Patent number: 11916083
    Abstract: A display substrate has an active area which includes a photosensitive region with a light-transmitting channel. The display substrate includes a base, a pixel circuit layer, a first insulating layer and a conductive light-shielding layer. The pixel circuit layer includes pixel circuits and at least one pixel circuit includes a first thin film transistor and a second thin film transistor. The first insulating layer has a first via hole. The conductive light-shielding layer includes a conductive light-shielding pattern that has a first light-transmitting hole. Orthogonal projections of the first light-transmitting hole and of a gap region between the first thin film transistor and the second thin film transistor have a first overlapping region, which the light-transmitting channel penetrates. The conductive light-shielding pattern is coupled with a source electrode or a drain electrode of the first thin film transistor through the first via hole.
    Type: Grant
    Filed: June 27, 2020
    Date of Patent: February 27, 2024
    Assignees: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jianbo Xian, Hongfei Cheng, Yongda Ma, Chen Xu, Xueguang Hao
  • Patent number: 11906859
    Abstract: The present disclosure provides a display substrate and a display device. The display substrate includes a base substrate, and a transistor, an anti-static wire, a first anti-static resistor and a first ground bonding pad on the base substrate, wherein a first terminal of the first anti-static resistor is electrically connected to a first end of the anti-static wire, a second terminal of the first anti-static resistor is electrically connected to the first ground bonding pad, and the first anti-static resistor is at a different layer from a layer at which the anti-static wire is located and a layer at which the first ground bonding pad is located, and is at a same layer as an active layer of the resistor.
    Type: Grant
    Filed: March 31, 2023
    Date of Patent: February 20, 2024
    Assignees: Beijing BOE Technology Development Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongfei Cheng, Hui Li
  • Patent number: 11887401
    Abstract: The present disclosure provides a display backplane, a method for manufacturing the same and a full-screen fingerprint identification display device. The display backplane includes a substrate; a circuit layer disposed on a surface of the substrate; a light emitting device layer disposed on a surface of the circuit layer away from the substrate; and a plurality of fingerprint identification photodetectors disposed in at least one of the circuit layer and the light emitting device layer.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: January 30, 2024
    Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xueguang Hao, Hongfei Cheng, Yongda Ma
  • Patent number: 11852925
    Abstract: A display panel includes an array substrate, a color filter substrate, a liquid crystal layer and a plurality of spacers located between the array substrate and the color filter substrate. The plurality of spacers include at least one first spacer, at least one second spacer and at least one third spacer. The at least one first spacer is on the array substrate, the at least one second spacer and the at least one third spacer are on the color filter substrate and respectively overlap the at least one first spacer in a direction perpendicular to the display panel. The at least one first spacer, the at least one second spacer and the at least one third spacer have a first height, a second height and a third height respectively along the direction perpendicular to the display panel, and the second height is different from the third height.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: December 26, 2023
    Assignees: Beijing BOE Technology Development Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Hongfei Cheng
  • Patent number: 11822196
    Abstract: An array substrate includes at least one driving electrode region and at least one sensing electrode region which are alternately arranged along a row direction and are disconnected from each other, each driving electrode region and each sensing electrode region include one first common electrode and one second common electrode respectively, at least one driving electrode line continuously passes through the driving electrode region and the sensing electrode region alternately arranged along the row direction. The first common electrode in the driving electrode region is connected to the driving electrode line through at least one first through hole, the second common electrode in the sensing electrode region is disconnected from the driving electrode line.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: November 21, 2023
    Assignees: Beijing BOE Technology Development Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongfei Cheng, Pan Li
  • Patent number: 11825694
    Abstract: The present disclosure relates to an array substrate and a method for manufacturing the same. The array substrate includes a substrate, a thin film transistor located on the substrate, a light emitting device located on the substrate and spaced apart from the thin film transistor in a direction parallel to a surface of the substrate, and a light shielding portion located between the thin film transistor and the light emitting device for shielding a light from the light emitting device. The light shielding portion surrounds the light emitting layer.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: November 21, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongfei Cheng, Yuxin Zhang
  • Patent number: 11810922
    Abstract: An array substrate and a display device are disclosed.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: November 7, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jianbo Xian, Hongfei Cheng, Yong Qiao, Yongda Ma
  • Patent number: 11803088
    Abstract: The disclosure relates to the technical field of display, and discloses an electrode structure, a capacitor, a GOA circuit, an array substrate, a display panel and a display device, wherein the electrode structure includes a body and a first opening formed in the body, the first opening has a half-enclosed shape, and a part, enclosed by the first opening, of the body has a tip structure. Each of the capacitor, the GOA circuit, the array substrate, the display panel and the display device includes the above-mentioned electrode structure.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: October 31, 2023
    Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Hongfei Cheng, Jianbo Xian, Hui Li
  • Publication number: 20230343287
    Abstract: Embodiments of the present disclosure provide a pixel circuitry, a drive method thereof, an array substrate and a display panel. The pixel circuitry may comprise a drive circuit, a data write circuit, an initialization circuit, a first light emission control circuit, a first storage circuit, a second storage circuit and a second light emission control circuit. The drive circuit may be coupled to a first node, a second node and a third node, and may provide a drive current to a light emitting device. The first storage circuit may store a voltage difference between the first voltage signal terminal and the second node. The second storage circuit may store a voltage difference between the first node and the second node.
    Type: Application
    Filed: February 7, 2021
    Publication date: October 26, 2023
    Inventors: Hongfei CHENG, Xueguang HAO
  • Patent number: 11783743
    Abstract: A shifting register, a driving method thereof, a driving circuit and a display device are provided. The shifting register includes a control circuit (10), a first output circuit (20), a second output circuit (30) and a first switching transistor (T1). Shifting output of signals may be realized through interaction of all of the circuits. Moreover, an influence of a leak current on a signal of a second end of the first switching transistor is reduced by setting the first switching transistor (T1) to isolate the second output circuit (30) and a second node (N2).
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: October 10, 2023
    Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology Group Co., Ltd.
    Inventor: Hongfei Cheng
  • Publication number: 20230236461
    Abstract: The present disclosure provides a display substrate and a display device. The display substrate includes a base substrate, and a transistor, an anti-static wire, a first anti-static resistor and a first ground bonding pad on the base substrate, wherein a first terminal of the first anti-static resistor is electrically connected to a first end of the anti-static wire, a second terminal of the first anti-static resistor is electrically connected to the first ground bonding pad, and the first anti-static resistor is at a different layer from a layer at which the anti-static wire is located and a layer at which the first ground bonding pad is located, and is at a same layer as an active layer of the resistor.
    Type: Application
    Filed: March 31, 2023
    Publication date: July 27, 2023
    Inventors: Hongfei CHENG, Hui LI