Patents Assigned to HEFEI BOE JOINT TECHNOLOGY CO., LTD.
  • Patent number: 11848064
    Abstract: A shift register includes a first scan unit, a leakage prevention unit, and a leakage prevention input unit. The first scan unit includes a first input circuit configured to transmit an input signal to a first pull-up node. The leakage prevention input unit is configured to: in response to a first voltage signal received at a first voltage signal terminal, transmit the first voltage signal to a leakage prevention input node; and in response to a second voltage signal received at a second voltage signal terminal, transmit the second voltage signal to the leakage prevention input node. The first voltage signal and the second voltage signal are mutually inverted signals. The leakage prevention unit is configured to transmit one of the first voltage signal and the second voltage signal from the leakage prevention input node to a first leakage prevention node.
    Type: Grant
    Filed: December 26, 2020
    Date of Patent: December 19, 2023
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11849617
    Abstract: Embodiments of the present disclosure provide a display panel and a display device. The display panel includes a base substrate, a plurality of pixel units and a plurality of gate line groups. At least one pixel unit includes a plurality of sub-pixels. At least one sub-pixel includes a sensing transistor and a driving transistor. Each gate line group includes a first gate line and a second gate line; for the first gate line and the second gate line corresponding to the sub-pixels in the same row, the positions of the sensing transistors are closer to the second gate lines, and the positions of the driving transistors are closer to the first gate line, For two sub-pixels close to each other and located in different pixel units in the same row, at least one signal line has a double-layer alignment structure, and the double-layer alignments are electrically connected with each other.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: December 19, 2023
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Zhongyuan Wu, Yongqian Li, Can Yuan, Zhidong Yuan, Meng Li, Dacheng Zhang, Lang Liu
  • Patent number: 11844255
    Abstract: A display panel includes a substrate, a pad, an auxiliary electrode layer, a data line layer, a first electrode layer, a light emitting layer, and a second electrode layer. The substrate has a display area and a peripheral area. The pad is disposed on a side of the substrate and located in the peripheral area. The auxiliary electrode layer is disposed on the same side of the substrate as the pad; the data line layer is disposed on a same layer as the auxiliary electrode layer; the first electrode layer is disposed on a side of the auxiliary electrode layer facing away from the substrate; the light emitting layer is disposed on a side of the first electrode layer facing away from the substrate; and the second electrode layer is disposed on a side of the light emitting layer facing away from the substrate and connected to the auxiliary electrode layer.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: December 12, 2023
    Assignees: Hefei BOE Joint Technology Co., Ltd, BOE TECHNOLOGY GROUP CO., LTD
    Inventors: Zhongyuan Wu, Yongqian Li, Zhidong Yuan, Meng Li, Can Yuan
  • Patent number: 11842683
    Abstract: A display apparatus, a display panel, and a driving method thereof, and a method of detecting a pixel circuit are described. The display panel includes a pixel unit and a detection apparatus, and the pixel unit includes a pixel circuit and a light-emitting element. The pixel circuit includes a first transistor, a second transistor, a driving transistor, and a storage capacitor. The detection device is configured to: turn off the first transistor and the second transistor, and detect an amount of current leakage of the driving transistor leaked through the sensing line to obtain a first current leakage parameter; detect a first characteristic parameter of the driving transistor to obtain a first reference characteristic parameter; and determine a first target characteristic parameter according to the first current leakage parameter and the first reference characteristic parameter.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: December 12, 2023
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Can Yuan, Yongqian Li, Zhidong Yuan
  • Patent number: 11844253
    Abstract: The present disclosure provides a display panel and a display device. The display panel includes a gate driving circuit including a first transistor; a base substrate; a functional layer located on a side of the base substrate, a material of the functional layer is a thermal conductive material, and the functional layer includes a first functional portion; an active layer located on a side of the functional layer away from the base substrate, the active layer includes a first active portion including at least one first active sub-portion which is configured to form a channel region of the first transistor; a second conductive layer located on a side of the active layer away from the base substrate, the second conductive layer includes a first conductive portion connected to the first functional portion through a first via hole.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: December 12, 2023
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO. , LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11830408
    Abstract: A shift register unit and a method of driving the shift register unit, a gate driving circuit, and a display device. The shift register unit includes: a first shift register configured to generate a first control output signal (CR1) and a second control output signal (CR2) based on a signal at a first clock signal terminal (CLKD); and a second shift register configured to generate a second output signal (OUT2) based on a signal at a third clock signal terminal (CLKE2), wherein a first pull-down node (PD1_1) of the first shift register is connected to a second pull-down node (PD2_2) of the second shift register, and a second pull-down node (PD1_2) of the first shift register is connected to a first pull-down node (PD2_1) of the second shift register.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: November 28, 2023
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11817028
    Abstract: The present disclosure relates to the field of display technology, and in particular, to a gate driving structure, an array substrate and a display device. The gate driving structure may include: a base substrate; a shift register, formed on the base substrate, and including a plurality of thin film transistors and at least one capacitor, the capacitor being coupled to the thin film transistor; and a signal wiring group, formed on the base substrate, and including a plurality of signal wirings spaced apart from each other, the signal wiring being coupled to the thin film transistor. An orthographic projection of the capacitor on the base substrate is at least partially overlapped with an orthographic projection of the signal wiring group on the base substrate.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: November 14, 2023
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Pan Xu
  • Patent number: 11817034
    Abstract: A display substrate includes: a base substrate; a first conductive pattern arranged on the base substrate; a first insulation layer arranged at a side of the first conductive pattern away from the base substrate; a second conductive pattern arranged at a side of the first insulation layer away from the base substrate; a second insulation layer arranged at a side of the second conductive pattern away from the base substrate; and a third conductive pattern arranged at a side of the second insulation layer away from the base substrate. The third conductive pattern and the first conductive pattern together serve as a first electrode plate of the capacitor, and the second conductive pattern serves as a second electrode plate of the capacitor.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: November 14, 2023
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Yongqian Li, Dacheng Zhang, Lang Liu
  • Publication number: 20230363224
    Abstract: The display panel comprises a pixel driving circuit; the pixel driving circuit comprises a switching transistor; the display panel further comprises a base substrate, a first conductive layer, and a third conductive layer which are sequentially stacked; the first conductive layer is located on one side of the base substrate, and at least part of the first conductive layer is used for forming a gate of the switching transistor; the third conductive layer is located on the side of the first conductive layer facing away from the base substrate, the third conductive layer comprises a second signal line, and the second signal line is connected to the gate of the switching transistor by means of a via hole; the square resistance of the third conductive layer is less than the square resistance of the first conductive layer.
    Type: Application
    Filed: November 16, 2021
    Publication date: November 9, 2023
    Applicants: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Min HE, Can YUAN
  • Patent number: 11798487
    Abstract: A display panel has a display area including a plurality of pixel areas arranged in an array and a plurality of gate driving circuit areas. Each pixel area includes a pixel light-emitting sub-area and a pixel circuit sub-area arranged in a first direction. Pixel areas in each row correspond to at least two gate driving circuit areas each located between two adjacent pixel areas in this row. The display panel includes a gate driving circuit and a plurality of light-shielding portions. The gate driving circuit includes a plurality of shift registers that are cascaded. Each shift register includes a plurality of transistor groups, and each transistor group includes at least one transistor. Each light-shielding portion is located in a gate driving circuit area in which a transistor group is disposed, and is disposed on a periphery of the transistor group, and is electrically connected to a power supply signal line.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: October 24, 2023
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11798486
    Abstract: A shift register, a gate drive circuit and a driving method therefor. The shift register includes a display pre-charge reset subcircuit, a sensing pre-charge reset subcircuit, a pull-down control subcircuit, an output subcircuit, a sensing cascade subcircuit and a black frame insertion cascade subcircuit. The display pre-charge reset subcircuit is configured to provide a signal of a first power supply end for a pull-up node under control of a first signal input end and provide a signal of a second power supply end to the pull-up node under control of a reset signal end; the sensing pre-charge reset subcircuit is configured to provide a signal of a first clock signal end to the pull-up node under control of the sensing cascade node and the first clock signal end, and provide a signal of the second power supply end to the pull-up node under control of a total reset end.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: October 24, 2023
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li
  • Publication number: 20230306892
    Abstract: A shift-register unit includes a first circuit including a first input circuit coupled via a first node to a first output circuit, and a second circuit including a second input circuit coupled via a second node to a second output circuit. The first input circuit is configured to control a voltage level of the first node in response to a first input signal. The first output circuit is configured to output a shift-register signal and a first output signal in response to the voltage level of the first node. The second input circuit is configured to control a voltage level of the second node in response to the first input signal. The second output circuit is configured to output a second output signal in response to the voltage level of the second node. The first input circuit and the second input circuit have a same circuit structure.
    Type: Application
    Filed: May 30, 2023
    Publication date: September 28, 2023
    Applicants: Hefei BOE Joint Technology Co.,Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li, Xing Zhang
  • Patent number: 11769445
    Abstract: A multiplexer circuit includes a first selection sub-circuit and a second selection sub-circuit. The first selection sub-circuit configured to transmit an input signal received at a input signal terminal to a first output terminal in response to a first control signal received at a first control terminal, and transmit a voltage of a power supply voltage terminal to the first output terminal in response to a second control signal received at a second control terminal. The second selection sub-circuit configured to transmit the input signal received at the input signal terminal to a second output terminal in response to a third control signal received at a third control terminal, and transmit the voltage of the power supply voltage terminal to the second output terminal in response to a fourth control signal received at a fourth control terminal.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: September 26, 2023
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Can Yuan, Yongqian Li, Zhidong Yuan
  • Patent number: 11763724
    Abstract: A shift register unit, a method for driving a shift register unit, a gate drive circuit, and a display device are disclosed. A shift register unit includes an input circuit, an output circuit, and a first control circuit. The input circuit controls a level of a first node in response to an input signal. The output circuit outputs at least one clock signal of at least one clock signal terminal to at least one signal output terminal under the control of the level of the first node, and outputs a level of a second node to at least one of the at least one signal output terminal in the case where the first node is at a non-operating potential. The first control circuit controls the level of the second node in response to the level of the first node.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: September 19, 2023
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Sixiang Wu
  • Patent number: 11763726
    Abstract: A shift register circuit includes: an input sub-circuit connected to a first node, and configured to receive a first control signal, and cause a potential of the first node to jump from an initial potential to a first potential greater than the initial potential; an output sub-circuit connected to the first node, and configured to receive a first clock signal, generate an output signal, cause the potential of the first node to jump from the first potential to a third potential greater than the first potential; and a chamfering sub-circuit connected to the first node, and configured to receive a second control signal, cause the potential of the first node to gradually decrease from the third potential to a fourth potential greater than the initial potential and less than the third potential, and cause the potential of the first node to jump from the fourth potential to the initial potential.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: September 19, 2023
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11763741
    Abstract: A gate driving unit includes an Nth stage of shift register unit and an (N+1)th stage of shift register unit, N is a positive integer. The Nth stage of shift register unit includes an Nth stage of pull-up node control circuit, and the (N+1)th stage of shift register unit includes an (N+1)th stage of pull-up node control circuit. The Nth stage of pull-up node control circuit is electrically connected to an Nth stage of pull-up node and a control line, controls a potential of the Nth stage of pull-up node under the control of a control signal inputted by the control line. The (N+1)th stage of pull-up node control circuit is electrically connected to an (N+1)th stage of pull-up node and the control line, respectively, and controls a potential of the (N+1)th stage of pull-up node under the control of the control signal inputted by the control line.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: September 19, 2023
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11735119
    Abstract: A shift register unit and a control method thereof, a gate driving circuit and a control method thereof, and a display apparatus are provided. The shift register unit includes: a first shift register coupled to an input signal terminal, a first clock signal terminal and a second clock signal terminal. The first shift register is configured to generate a first output signal based on the signal at the first clock signal terminal and generate a second output signal based on the signal at the second clock signal terminal; and a second shift register coupled to the input signal terminal and a third clock signal terminal, the second shift register is configured to generate a third output signal based on the signal at the third clock signal terminal. The first shift register includes a first control circuit, a first output circuit and a second output circuit.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: August 22, 2023
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan
  • Publication number: 20230247872
    Abstract: The present disclosure provides a display panel and a display device. The display panel includes a gate driving circuit including a first transistor; a base substrate; a functional layer located on a side of the base substrate, a material of the functional layer is a thermal conductive material, and the functional layer includes a first functional portion; an active layer located on a side of the functional layer away from the base substrate, the active layer includes a first active portion including at least one first active sub-portion which is configured to form a channel region of the first transistor; a second conductive layer located on a side of the active layer away from the base substrate, the second conductive layer includes a first conductive portion connected to the first functional portion through a first via hole.
    Type: Application
    Filed: November 19, 2021
    Publication date: August 3, 2023
    Applicants: Hefei BOE Joint Technology Co.,Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xuehuan FENG, Yongqian LI
  • Patent number: 11705047
    Abstract: A shift-register unit includes a first circuit including a first input circuit coupled via a first node to a first output circuit, and a second circuit including a second input circuit coupled via a second node to a second output circuit. The first input circuit is configured to control a voltage level of the first node in response to a first input signal. The first output circuit is configured to output a shift-register signal and a first output signal in response to the voltage level of the first node. The second input circuit is configured to control a voltage level of the second node in response to the first input signal. The second output circuit is configured to output a second output signal in response to the voltage level of the second node. The first input circuit and the second input circuit have a same circuit structure.
    Type: Grant
    Filed: April 14, 2022
    Date of Patent: July 18, 2023
    Assignees: BOE Technology Group Co., Ltd., Hefei BOE Joint Technology Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li, Xing Zhang
  • Patent number: 11699382
    Abstract: Provided is a method for driving a display device including n rows of sub-pixels; the method includes: driving the first frame of image, including: performing normal display driving on the n rows of sub-pixels in a display driving period, performing darkness insertion driving on a rows, from the 1st to ath rows, of sub-pixels in a first darkness insertion sub-period, and performing darkness insertion driving on (n?a) rows, from the (a+1)th to nth rows, of sub-pixels in a second darkness insertion sub-period driving a second frame of image, including: performing normal display driving on the n rows of sub-pixels in a display driving period, performing darkness insertion driving on b rows, from the 1st to bth rows, of sub-pixels in a first darkness insertion sub-period, and performing darkness insertion driving on (n?b) rows, from the (b+1)th to nth rows, of sub-pixels in a second darkness insertion sub-period.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: July 11, 2023
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Xing Yao, Jingbo Xu, Xuelian Cheng