Patents by Inventor Zeyao Li

Zeyao 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).

  • Publication number: 20240153442
    Abstract: Disclosed are a pixel drive circuit, a driving method, and a display panel. The pixel drive circuit includes a light-emitting element; a power supply line, including a high-potential power supply and a low-potential power supply, connected to the light-emitting element; a pulse amplitude modulation unit, including a first drive transistor connected to the light-emitting element and the power supply line; wherein a driving current with different amplitudes is provided to the light-emitting element according to a voltage applied to a gate of the first drive transistor; and a pulse width modulation unit, including a second drive transistor connected to the light-emitting element and the pulse amplitude modulation unit; wherein a duration of the driving current of the light-emitting element is controlled according to a voltage applied to a gate of the second drive transistor.
    Type: Application
    Filed: June 23, 2023
    Publication date: May 9, 2024
    Inventors: Zeyao LI, Haoxuan ZHENG
  • Publication number: 20240145486
    Abstract: The present disclosures provide a driving substrate and a display device. The driving substrate includes a base, a first metal layer and a second metal layer, and a connection layer. The first metal layer includes a first wiring and the second metal layer includes a second wiring. A part of the connection layer extends to the first through hole to form a first conductive hole and another part extends to second through hole to from a second conductive hole. A first conductive hole and a second conductive hole form a group of conductive connection holes. The current path formed by the first conductive hole passing through the connection layer to the corresponding second conductive hole is the intra-group current path, while the current path formed by the first conductive hole passing through the connection layer to the second conductive hole in any other group is the extra-group path.
    Type: Application
    Filed: June 13, 2023
    Publication date: May 2, 2024
    Inventors: Zeyao LI, Rongrong LI
  • Patent number: 11967296
    Abstract: In the field of liquid crystal display technology, a liquid crystal display device and a driving method thereof. The driving method includes steps of: detecting whether a light leakage has occurred in the liquid crystal display device; and adjusting a turn-off voltage output from a gate driver to a gate of a switch element to reduce an absolute value of a voltage difference between the turn-off voltage and a common voltage when the light leakage has occurred in the liquid crystal display device. In the embodiments, the phenomenon of light leakage at the dislocation caused by the dislocation between the color filter substrate and the array substrate when the liquid crystal display device is subjected to external pressure can be effectively improved, thereby improving the display effect of the liquid crystal display device.
    Type: Grant
    Filed: October 3, 2022
    Date of Patent: April 23, 2024
    Assignees: CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventors: Zeyao Li, Rongrong Li
  • Patent number: 11961440
    Abstract: A method for driving a display device is provided. The method includes: obtaining a refresh frequency of a current frame image; adjusting a common voltage of all pixels in a second vertical blank interval to control a difference value between a root mean square of voltage differences between common voltages and pixel voltages of the pixels in a first vertical blank interval when a reference frame image is displayed, and a root mean square of voltage differences between common voltages and pixel voltages of the pixels in the second vertical blank interval when a current frame image is displayed to be within a preset-voltage-difference-range, such that the difference in decrease levels of potentials of the pixels at different refresh frequencies are greatly reduced, the screen brightness displayed on the display device at different refresh frequencies tend to be consistent, and a screen flicker phenomenon is further improved.
    Type: Grant
    Filed: August 1, 2022
    Date of Patent: April 16, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Zeyao Li, Haijiang Yuan
  • Patent number: 11955590
    Abstract: The present disclosure provides a display panel and a method for making the display panel. The method for making the display panel includes: providing a substrate; preparing a driving circuit layer on one side of the substrate; the driving circuit layer includes a binding layer, a display base and an array circuit layer which are stacked, and the binding layer is located between the display base and the substrate. Removing the substrate and the binding layer is exposed; binding the external control unit on the binding layer.
    Type: Grant
    Filed: December 28, 2022
    Date of Patent: April 9, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Zeyao Li, Rongrong Li
  • Publication number: 20240072201
    Abstract: The present application provides a display panel and a method for making the display panel. The display panel includes a substrate, a driving circuit layer, multiple light emitting units, and a black matrix layer. The black matrix layer is located between two adjacent light emitting units. The multiple light emitting units are staggered with driving elements, common electrodes and signal lines. A light emitting element emits light towards a quantum dot layer, thereby exciting the quantum dot layer to emit light. The embodiments of the present application provide a full-color display panel emitting light towards the substrate, and improve electrodes of the driving transistor and/or electrodes of the switching transistor.
    Type: Application
    Filed: November 2, 2023
    Publication date: February 29, 2024
    Inventors: Zeyao LI, Haoxuan ZHENG
  • 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
  • Publication number: 20230411370
    Abstract: The present application provides a display panel and a method of manufacturing a display panel. The display panel includes a plurality of light-emitting units, an encapsulation layer, an encapsulation substrate and a drive substrate. The light-emitting units are disposed between the encapsulation substrate and the drive substrate. The light-emitting units include main light-emitting units and auxiliary light-emitting units, which are arranged on different layers. The auxiliary light-emitting units are in one-to-one correspondence with at least some of the main light-emitting units. In a direction parallel to an extending direction of the drive substrate and/or the encapsulation substrate, a distance between a center of the main light-emitting unit and a center of the auxiliary light-emitting unit is not greater than twice of a length of a projection of the main light-emitting unit in the extending direction.
    Type: Application
    Filed: December 7, 2022
    Publication date: December 21, 2023
    Inventors: ZEYAO LI, Rongrong Li
  • Publication number: 20230386391
    Abstract: The present disclosure provides a display panel, a driving circuit and a driving method. The driving circuit includes a plurality of sub-pixels arranged in an array, wherein sub-pixels in two adjacent columns are connected to a same detection line for detecting a corresponding driving current of any of the sub-pixels in the two adjacent columns; wherein each driving current is configured to determine a corresponding compensation signal of corresponding two adjacent sub-pixels, for compensating data driving signals of the corresponding two adjacent sub-pixels based on the corresponding compensation signal in a displaying operation.
    Type: Application
    Filed: December 8, 2022
    Publication date: November 30, 2023
    Inventors: ZEYAO LI, Rongrong LI
  • Publication number: 20230386392
    Abstract: Disclosed are a driving substrate and a display panel. The driving substrate is configured to drive a light-emitting unit to emit light and includes a base including a display region, multiple rows of scan lines and multiple data lines arranged on the base, and a scan driving circuit. Multiple pixel regions are defined by the multiple rows of scan lines and the multiple data lines crossing each other longitudinally and horizontally. The pixel regions are located in the display region. Row directions of the multiple pixel regions are substantially parallel to the scan lines. The scan driving circuit is arranged in the display region of the base and includes multiple scan driving units which are cascaded. A same scan driving unit is arranged in pixel regions in at least two rows among the plurality of pixel regions and capable of outputting at least one row of gate scanning signal.
    Type: Application
    Filed: December 9, 2022
    Publication date: November 30, 2023
    Inventors: ZEYAO LI, Rongrong Li
  • Publication number: 20230387368
    Abstract: The present disclosure provides a display panel and a method for making the display panel. The method for making the display panel includes: providing a substrate; preparing a driving circuit layer on one side of the substrate; the driving circuit layer includes a binding layer, a display base and an array circuit layer which are stacked, and the binding layer is located between the display base and the substrate. Removing the substrate and the binding layer is exposed; binding the external control unit on the binding layer.
    Type: Application
    Filed: December 28, 2022
    Publication date: November 30, 2023
    Inventors: ZEYAO LI, RONGRONG LI
  • Publication number: 20230387367
    Abstract: A method of manufacturing a display panel includes following operations. A display substrate is provided. The display substrate includes a first surface, a second surface opposite to the first surface, and a side surface connected to the first surface and the second surface. An array circuit layer is arranged on the first surface of the display substrate. A connecting substrate is provided. A binding circuit layer and a connecting circuit layer connected to the binding circuit layer are formed on a surface of the connecting substrate. The connecting substrate having the binding circuit layer and the connecting circuit layer is fixed to a side of the display substrate. The connecting circuit layer may be electrically connected to the array circuit layer, and the array circuit layer is electrically connected to the binding circuit layer through the connecting circuit layer. A control unit is bound on the binding circuit layer.
    Type: Application
    Filed: December 7, 2022
    Publication date: November 30, 2023
    Inventors: ZEYAO LI, Haijiang Yuan
  • Publication number: 20230386425
    Abstract: Disclosed are a driving substrate, a display panel, and a display device. The driving substrate is applied to a display panel and includes a base; data lines and row scanning lines, arranged on a side of the base; and a scanning driving circuit, arranged on the side of the base and including a plurality of scanning driving units that are cascaded. Each row scanning line includes at least two sub-scanning lines, and the scanning driving circuit is configured to output a gate scanning signal to each sub-scanning line. The present disclosure may save power by dividing each row scanning line into multiple sub-scanning lines and separately outputting the gate scanning signal for each sub-scanning line, making it possible to drive only part of the thin-film transistor in each row when only part of the display region of the display panel is used for displaying images.
    Type: Application
    Filed: December 8, 2022
    Publication date: November 30, 2023
    Inventors: ZEYAO LI, Rongrong Li
  • Patent number: 11804174
    Abstract: Disclosed are a display panel, a driving circuit, and a driving method. The driving circuit includes multiple sub-pixels. For each sub-pixel, the sub-pixel includes: a light-emitting element; a pre-charging unit; a driving unit; and a detection unit. In condition of a detection operation being performed, the pre-charging unit is configured to receive the data driving signal, the driving unit is configured to generate a detection driving current, and the detection unit is configured to detect the detection driving current, such that the display panel determines and compensate a compensation signal; in condition of a display operation being performed, the pre-charging unit is configured to receive the compensated data driving signal, and the driving unit is configured to generate a display driving current to drive the light-emitting element to emit light.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: October 31, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Zeyao Li, Rongrong Li
  • Patent number: 11798470
    Abstract: A pixel driving circuit, a driving method thereof, and a display panel are provided. The pixel driving circuit includes a light-emitting element, a power line connected to the light-emitting element, a pulse amplitude modulation unit including a first driving transistor connected to the light-emitting element and the power line and configured to provide driving current with different amplitude to the light-emitting element according to voltage applied to a gate of the first driving transistor; and a pulse width modulation unit including a second driving transistor connected to the light-emitting element and the pulse amplitude modulation unit, a first transistor and a second transistor connected to a gate of the second driving transistor, and a pulse width generation circuit connected to the gate of the first transistor. Duration of driving current in the light-emitting element is controlled according to voltage applied to the gate of the second driving transistor.
    Type: Grant
    Filed: June 10, 2023
    Date of Patent: October 24, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Zeyao Li, Haijiang Yuan
  • Patent number: 11783766
    Abstract: Disclosed are a pixel drive circuit, a driving method, and a display panel. The pixel drive circuit includes a light-emitting element, a power supply line, and a pulse amplitude modulation unit and a pulse width modulation unit connected between a high-potential power supply of the power supply line and an anode of the light emitting element. The pulse amplitude modulation unit provides driving currents with different amplitudes to the light emitting element. The pulse width modulation unit includes a second drive transistor, a first transistor and a second transistor, and a pulse width modulation circuit. The pulse width modulation circuit generates a corresponding drive signal to control the first transistor or the second transistor to be turned on based on the first data voltages during a luminescence phase, and controls the second drive transistor to be turned on to control the duration of the driving currents of the light-emitting element.
    Type: Grant
    Filed: June 6, 2023
    Date of Patent: October 10, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Zeyao Li, Baohong Kang
  • Patent number: 11763737
    Abstract: A Micro-LED display panel and a display device are provided. The display panel has a display region provided with pixel units, and includes a first voltage-main-line, a second voltage-main-line, a first input-unit, and a second input-unit. The first voltage-main-line and the second voltage-main-line each surround the display region. A first voltage-access-end of each pixel unit is electrically coupled with the first voltage-main-line nearby. A second voltage-access-end of each pixel unit is electrically coupled with the second voltage-main-line nearby. The first input-unit and the second input-unit are respectively located on a periphery of opposite sides of the display region in a first direction. The first input-unit and the second input-unit each are electrically coupled with the first voltage-main-line nearby, to supply a first voltage to the first voltage-main-line.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: September 19, 2023
    Assignees: CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD, HKC CORPORATION LIMITED
    Inventors: Zeyao Li, Haijiang Yuan
  • Publication number: 20230268458
    Abstract: A display panel is provided with a conductive layer having a conductive connecting line for connecting a light-emitting element. The conductive layer is further provided with a redundant conductive connecting line for connecting a standby light-emitting element. The repair method of the display panel includes: detecting whether the light-emitting element is abnormal; electrically connecting the redundant conductive connecting line with the conductive connecting line when the light-emitting element is abnormal; and connecting the standby light-emitting element to a redundant conductive connecting line to replace the light-emitting element with abnormal function.
    Type: Application
    Filed: December 12, 2022
    Publication date: August 24, 2023
    Inventors: Zeyao LI, Baohong KANG
  • Publication number: 20230196990
    Abstract: A Micro-LED display panel and a display device are provided. The display panel has a display region provided with pixel units, and includes a first voltage-main-line, a second voltage-main-line, a first input-unit, and a second input-unit. The first voltage-main-line and the second voltage-main-line each surround the display region. A first voltage-access-end of each pixel unit is electrically coupled with the first voltage-main-line nearby. A second voltage-access-end of each pixel unit is electrically coupled with the second voltage-main-line nearby. The first input-unit and the second input-unit are respectively located on a periphery of opposite sides of the display region in a first direction. The first input-unit and the second input-unit each are electrically coupled with the first voltage-main-line nearby, to supply a first voltage to the first voltage-main-line.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 22, 2023
    Applicants: Chongqing HKC Optoelectronics Technology Co., Ltd, HKC Corporation Limited
    Inventors: Zeyao LI, Haijiang YUAN
  • Patent number: 11645962
    Abstract: A common electrode pattern, a driving method and a display equipment. By performing common voltage compensations for all positive-polarity pixels and all negative-polarity pixels through two common electrode units, respectively, the difference between the reduction degrees of the pixel potential of the display equipment at different refresh frequencies can be effectively reduced, so that the brightness of the screen displayed by the display equipment at different refresh frequencies tend to be consistent, thereby improving the phenomenon of screen flickering.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: May 9, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventor: Zeyao Li