Patents by Inventor Rongrong Li

Rongrong Li 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: 11922896
    Abstract: An array substrate is provided. The array substrate includes a first surface and a second surface opposite to the first surface. The array substrate further includes multiple first common lines and multiple second common lines. The multiple first common lines extend along a first direction and are arranged on the first surface at intervals of a first distance along a second direction, the multiple second common lines extend along the second direction and are arranged on the second surface at intervals of a second distance along the first direction. The first common line and the second common line are electrically connected to each other through the array substrate, and the first common line and the second common line are configured to transmit a common voltage to the pixel unit, the pixel unit is driven to display an image by the common voltage and the data signal.
    Type: Grant
    Filed: June 14, 2023
    Date of Patent: March 5, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Zhiwei Li, Rongrong Li
  • Patent number: 11923532
    Abstract: A pre-lithiated silicon-based anode includes a silicon-based anode, lithium disposed on a surface or in an interior of the silicon-based anode, and a protective coating on the surface of the silicon-based anode. The pre-lithiated silicon-based anode allows subsequent processing to be performed safely in the atmosphere.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: March 5, 2024
    Assignee: Robert Bosch GmbH
    Inventors: Rongrong Jiang, Jingjun Zhang, Yuqian Dou, Lei Wang, Chuanling Li, Yunhua Chen, Xiaogang Hao, Qiang Lu
  • Publication number: 20240071309
    Abstract: A drive circuit of a display panel and a display device are provided in the disclosure. The drive circuit includes a voltage output module. The voltage output module includes a voltage input terminal, a voltage output terminal, a detection module, and an isolation module. The voltage input terminal is configured to receive a voltage signal. The voltage output terminal is electrically coupled with the display panel. The detection module is electrically coupled with the voltage input terminal and configured to determine whether a voltage value of the voltage signal received at the voltage input terminal is greater than or equal to a preset voltage threshold. The detection module is configured to output a second control signal when the voltage value of the voltage signal is less than the preset voltage threshold.
    Type: Application
    Filed: December 29, 2022
    Publication date: February 29, 2024
    Inventors: Renjie ZHOU, Rongrong LI
  • Patent number: 11915654
    Abstract: A drive circuit of a display panel and a display device are provided in the disclosure. The drive circuit includes a voltage output module. The voltage output module includes a voltage input terminal, a voltage output terminal, a detection module, and an isolation module. The voltage input terminal is configured to receive a voltage signal. The voltage output terminal is electrically coupled with the display panel. The detection module is electrically coupled with the voltage input terminal and configured to determine whether a voltage value of the voltage signal received at the voltage input terminal is greater than or equal to a preset voltage threshold. The detection module is configured to output a second control signal when the voltage value of the voltage signal is less than the preset voltage threshold.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: February 27, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Renjie Zhou, Rongrong Li
  • Patent number: 11915662
    Abstract: A backlight module includes at least one drive light-emitting group. The drive light-emitting group includes a drive unit provided with plurality of signal transmission channels, a plurality of light-emitting units and a plurality of line groups. The signal transmission channel is connected to the light-emitting unit through the line group. The signal transmission channel, the line group and the light-emitting unit are arranged in one-to-one correspondence. The line group includes a main transmission line and a compensation line arranged in parallel. The compensation lines of the plurality of line groups are connected through a control switch group. When there is an abnormal signal transmission channel, the control switch group is enabled to control a compensation line corresponding to the abnormal signal transmission channel to be conducted with compensation line corresponding to at least one normal signal transmission channel.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: February 27, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Bin Qiu, Rongrong Li
  • Patent number: 11916053
    Abstract: A display panel and a display device are provided. The display panel includes a drive substrate, a bonding layer, and multiple light-emitting components. The drive substrate includes multiple sets of pads. Each set of pads includes a first pad and a second pad. The bonding layer is arranged on the multiple sets of pads. Each light-emitting component includes a semiconductor light-emitting layer, a first electrode, and a second electrode. The first electrode and the second electrode are arranged at opposite ends of the semiconductor light-emitting layer. The first electrode is electrically connected to a corresponding first pad through the bonding layer. The second electrode is electrically connected to a corresponding second pad through the bonding layer. The second electrodes of the adjacent light-emitting components are close to each other. The second electrodes close to each other are shorted through the same bonding layer and/or the same second pad.
    Type: Grant
    Filed: June 9, 2023
    Date of Patent: February 27, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Zeyao Li, Rongrong Li
  • Patent number: 11915663
    Abstract: A common voltage driving circuit, a display device, and an electronic device are provided. The common voltage driving circuit includes multiple scan lines and multiple common-voltage signal lines, and further includes multiple common electrode units arranged in an array. The multiple scan lines extend in a first direction and are arranged at intervals in sequence in a second direction perpendicular to the first direction. The multiple common-voltage signal lines extend in the second direction and are arranged at intervals in sequence in the first direction. The multiple common electrode units are disposed at intersections of the multiple scan lines and the multiple common-voltage signal lines respectively. Common electrode units in a same column are all electrically coupled with a same common-voltage signal line. Common electrode units in a same row are all electrically coupled with a same second scan line.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: February 27, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Mancheng Zhou, Yuanping Zhang, Rongrong Li
  • Patent number: 11908411
    Abstract: A display panel includes a plurality of pixel driving circuits arranged in an array along a row direction and a column direction. The display panel further comprises a plurality of first control lines, a plurality of second control lines, a plurality of data lines, and a plurality of power lines. Each of the pixel driving circuits is correspondingly connected to the first control line, the second control line, the data line, and two power lines, and the two power lines comprises a first power line and a second power line. The pixel driving circuit includes: a driving transistor, a storage capacitor, a sampling compensation assembly, a first switch assembly, a second switch assembly and a light emitting device.
    Type: Grant
    Filed: June 5, 2023
    Date of Patent: February 20, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Tao Fan, Rongrong Li
  • Publication number: 20240038174
    Abstract: A pixel drive circuit and a display panel are provided in the disclosure. The pixel drive circuit includes a drive transistor, an energy-storage capacitor, a bootstrap capacitor, a pre-charge loop, a data-writing loop, and a light-emitting loop. The energy-storage capacitor has a first terminal coupled with a control terminal of the drive transistor. The bootstrap capacitor has a first terminal coupled with a first coupling terminal of the drive transistor. The pixel drive circuit is configured to charge a voltage at the first terminal of the bootstrap capacitor to reach a value of a drive voltage via the pre-charge loop in a reset phase, and receive a data voltage via the bootstrap capacitor to charge the energy-storage capacitor based on a bootstrap effect of the bootstrap capacitor in a data-writing phase.
    Type: Application
    Filed: December 29, 2022
    Publication date: February 1, 2024
    Inventors: Renjie ZHOU, Rongrong LI
  • Publication number: 20240036401
    Abstract: A display panel and a display device are disclosed. The display panel includes a first substrate, a second substrate, and a liquid crystal layer disposed therebetween. The first substrate includes a first base and a plurality of pixel units arranged thereon in an array. The pixel units in odd-numbered columns are first pixel units, and those in even-numbered columns are second pixel units. An alignment direction of the first substrate is perpendicular to an extending direction of the column of the pixel units. A liquid crystal molecule corresponding to each first pixel unit defines a first pretilt angle, and that corresponding to each second pixel unit defines a second pretilt angle. An opening direction of the first pretilt angle is consistent with the alignment direction of the first substrate, and an opening direction of the second pretilt angle is opposite to the alignment direction of the first substrate.
    Type: Application
    Filed: December 16, 2022
    Publication date: February 1, 2024
    Inventors: XINGHAO XUE, Rongrong Li
  • Patent number: 11887556
    Abstract: A data driving circuit, a display module, and a display device are provided. The data driving circuit at least includes a selecting unit and a signal conversion unit. The selecting unit is configured to directly output an image signal received to the signal conversion unit, or invert the image signal and then transmit the image signal inverted to the signal conversion unit. The control signal represents a display mode of a pixel unit that receives the image signal and perform image display according to the image signal. The signal conversion unit is configured to convert the image signal into a grayscale voltage in an analog form. The grayscale voltage is transmitted to the pixel unit to perform image display.
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: January 30, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Mancheng Zhou, Shuang Wang, Rongrong Li
  • Patent number: 11887543
    Abstract: A pixel drive circuit includes: a driving compensation circuitry, a data-writing circuitry, and a flip-elimination circuitry. By configuring the flip-elimination circuitry, the reference voltage can be written to the control end of the drive transistor through the independent circuit line in the compensation phase, thereby it is unnecessary to write the reference voltage through the data-voltage line before each writing of the data voltage. In the writing phase of the data voltage, the entire time of each writing can be used for the writing of data voltage without reserving half of the time for writing the reference voltage, so that the level switch frequency of the data line does not need to reach twice the normal light-emitting frequency, which reduces the burden on the display panel, greatly reduces the power consumption of the screen, and improves product competitiveness.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: January 30, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Xiufeng Zhou, Xin Yuan, Rongrong Li
  • Patent number: 11881183
    Abstract: Disclosed are an overvoltage protection circuit, a display panel and a display. The overvoltage protection circuit includes an overvoltage detection circuit and an overvoltage count circuit. The overvoltage detection circuit connected to a power supply and the overvoltage count circuit detects a power supply voltage output by the power supply and output an overvoltage signal to the overvoltage count circuit when the power supply voltage is in an overvoltage state. The overvoltage count circuit connected to a switching element outputs a cutoff signal to the switching element when accumulated times for receiving overvoltage signals reach preset times, to control the switching element to disconnect the power supply from the power management integrated circuit.
    Type: Grant
    Filed: December 21, 2022
    Date of Patent: January 23, 2024
    Assignees: MIANYANG HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventors: Renjie Zhou, Rongrong Li
  • Patent number: 11881175
    Abstract: A pixel driving circuit, a display panel, and a display device. The pixel driving circuit includes a driving transistor, a data-writing sub-circuit; and a voltage stabilization sub-circuit. The voltage stabilization sub-circuit is coupled to a first control terminal of the driving transistor and is configured to keep a voltage at the first control terminal of the driving transistor to be stable in a reset stage. The voltage at the first control terminal of the driving transistor is kept stable through the voltage stabilization sub-circuit in the reset stage, so that the voltage at the output of the driving transistor is relatively constant, characteristics of a switching element of the driving transistor is ensured, an effect of homogeneous luminance is realized, and a display effect and a stability of displaying of the display panel are improved.
    Type: Grant
    Filed: December 14, 2022
    Date of Patent: January 23, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Xiufeng Zhou, Xin Yuan, Rongrong Li
  • Patent number: 11876082
    Abstract: A backlight circuit includes a lamp panel and a plurality of electron microscope assemblies. The lamp panel includes a driving substrate and a plurality of light-emitting chips on one side of the driving substrate. The electron microscope assemblies are disposed on first sides, away from the driving substrate, of the light-emitting chips in a one-to-one correspondence manner. Each electron microscope assembly includes a transparent electrode shield, an electrolyte, and an electrode plate. The transparent electrode shields are disposed on a first side of the driving substrate. The light-emitting chips are positioned in the transparent electrode shields. The electrode plates are disposed on first sides, away from the driving substrate, of the transparent electrode shields. The electrolytes are filled between the transparent electrode shields and the electrode plates.
    Type: Grant
    Filed: July 6, 2023
    Date of Patent: January 16, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Guangping Wei, Yaohui Qin, Yiyao Xu, Caiyu Song, Rongrong Li
  • Publication number: 20230419908
    Abstract: A pixel drive circuit, a display panel and a display device. The pixel drive circuit includes a drive transistor, a first compensation capacitor, and a second compensation capacitor. The drive transistor has a first control end, a second control end, an output end, and an input end. The drive transistor is configured as a four-terminal drive device having two control ends, and between each control end and the output end, a compensation element is arranged, so that the compensations to the threshold voltage of the front and rear channels are performed simultaneously when the drive transistor is driven. Meanwhile, each control end is equipped with a capacitor to eliminate the influence of a current difference caused by the threshold voltage of the secondary channel in the 4-terminal device.
    Type: Application
    Filed: December 19, 2022
    Publication date: December 28, 2023
    Applicant: HKC CORPORATION LIMITED
    Inventors: Xiufeng ZHOU, Xin Yuan, Rongrong Li
  • Publication number: 20230419907
    Abstract: A pixel driving circuit, a display panel, and a display device. The pixel driving circuit includes a driving transistor, a data-writing sub-circuit; and a voltage stabilization sub-circuit. The voltage stabilization sub-circuit is coupled to a first control terminal of the driving transistor and is configured to keep a voltage at the first control terminal of the driving transistor to be stable in a reset stage. The voltage at the first control terminal of the driving transistor is kept stable through the voltage stabilization sub-circuit in the reset stage, so that the voltage at the output of the driving transistor is relatively constant, characteristics of a switching element of the driving transistor is ensured, an effect of homogeneous luminance is realized, and a display effect and a stability of displaying of the display panel are improved.
    Type: Application
    Filed: December 14, 2022
    Publication date: December 28, 2023
    Applicant: HKC CORPORATION LIMITED
    Inventors: Xiufeng ZHOU, Xin Yuan, Rongrong Li
  • Publication number: 20230419898
    Abstract: A pixel drive circuit, a display panel and a display device. In the pixel drive circuit, a voltage-stabilization transistor is arranged, and the voltage-stabilization transistor is provided with two control ends, each of the two control ends forms a voltage-stabilization capacitor with the active layer, thereby a new capacitor is added on the basis of the original parasitic capacitor. The new capacitor has a relatively large capacitance value. The potential variation at the control end of the drive transistor depends on the parasitic capacitor of the drive transistor, the storage capacitor at the control end of the drive transistor, and the capacitance value of the new capacitor, when the capacitive coupling effect occurs, the voltage at the control end of the drive transistor can be jointly maintained by the above three capacitors, thereby improving the effect of voltage stabilization.
    Type: Application
    Filed: December 21, 2022
    Publication date: December 28, 2023
    Applicant: HKC CORPORATION LIMITED
    Inventors: Xiufeng ZHOU, Xin Yuan, Rongrong Li
  • Publication number: 20230419912
    Abstract: A pixel drive circuit, in which a second voltage-stabilization circuitry is configured that assists in maintaining the potential of the control end of the drive transistor during a transition from a compensation-and-writing phase to the light-emitting phase and in a light-emitting phase. During the transition from the compensation phase to the light-emitting phase, due to a decrease of the voltage output from the first voltage-stabilization circuitry, the node voltage between the first and second voltage-stabilization circuitries will be pulled down first. By providing the second voltage-stabilization circuitry, an influence on the node voltage at the control end of the drive transistor caused due to the voltage variation at the nodes between the two circuitries will be greatly reduced, the leakage current of the two circuitries connected in series is smaller than the leakage current of the one single first voltage-stabilization circuitry in the light-emitting phase.
    Type: Application
    Filed: December 23, 2022
    Publication date: December 28, 2023
    Applicant: HKC CORPORATION LIMITED
    Inventors: Xiufeng ZHOU, Xin YUAN, Rongrong LI
  • Patent number: 11854482
    Abstract: A pixel drive circuit, including a data input circuit, a switch circuit, an energy storage circuit and a light-emitting control circuit. The light-emitting control circuit has a control end connected to the data input circuit, an input connected to a first power supply, and an output connected to an anode of a light-emitting device. A cathode of the light-emitting device is connected to a second power supply. The first power supply outputs a low-potential voltage in a reset phase, and outputs a first high-potential voltage in a compensation phase, a writing phase and a light-emitting phase. The second power supply outputs a second high-potential voltage in the reset, compensation and writing phases, and output a low-potential voltage in the light-emitting phase. The switch circuit is switched on in the reset, compensation and light-emitting phases, and is switched off in the writing phase.
    Type: Grant
    Filed: July 21, 2023
    Date of Patent: December 26, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Zhaoyang Lu, Rongrong Li