Patents by Inventor Libin Liu

Libin Liu 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: 20220199022
    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: Application
    Filed: January 14, 2021
    Publication date: June 23, 2022
    Inventors: Lujiang HUANGFU, Libin LIU, Can ZHENG
  • Patent number: 11367398
    Abstract: A pixel circuit includes a potential compensation subcircuit configured to control a junction voltage of a light emitting element to be within a preset voltage range according to an initial voltage input by an initialization reset voltage terminal and a reset sequence input by a reset sequence signal terminal. The preset voltage range is higher than zero and lower than an emission threshold voltage of the light emitting element.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: June 21, 2022
    Assignee: BOE Technology Group Co, Ltd.
    Inventors: Lujiang Huangfu, Li Wang, Libin Liu
  • Publication number: 20220189401
    Abstract: Embodiments of the present disclosure provide a pixel circuit, a display substrate, a display device and a pixel driving method. In the pixel circuit, a threshold compensation circuit is coupled to a third control signal line, a control electrode of a driving transistor, first and second electrodes of the driving transistor, a first power terminal and a fixed voltage terminal, and is configured to acquire a threshold voltage of the driving transistor, and apply first and second control voltages respectively to the control and second electrodes of the driving transistor in response to the control of a second control signal line and the control of the third control signal line, and a difference between the first control voltage and the second control voltage is related to the threshold voltage of the driving transistor. Thus, the compensation for the threshold voltage and the power supply voltage can be realized.
    Type: Application
    Filed: January 14, 2021
    Publication date: June 16, 2022
    Inventors: Tian DONG, Libin LIU
  • Publication number: 20220181093
    Abstract: A supercapacitor contains the zwitterionic polymer hydrogel electrolyte. A change rate of a capacitance retention of the supercapacitor, relative to a specific area capacity at 25° C. is less than 25% at extreme temperature. When temperature is increased to 60° C. or reduced to ?30° C. the specific area capacity is changed to 178 mF cm?2 and 134 mF cm?2, which are 104% and 78% of that at 25° C. indicating an excellent electrochemical property at the extreme temperature.
    Type: Application
    Filed: November 3, 2021
    Publication date: June 9, 2022
    Inventors: Libin LIU, Jianbo YANG, Qing BAN, Ligang GAI, Xuelin LI, Mei LI
  • Publication number: 20220181419
    Abstract: A display substrate includes: a base substrate; a light-emitting unit in each pixel region and including a first electrode, an organic light-emitting layer, and a second electrode sequentially disposed in a direction away from the base substrate; an auxiliary conductive layer between the light-emitting unit and the base substrate; a pixel circuit in each pixel region and including a driving transistor. The auxiliary conductive layer is on a side of the pixel circuit away from the base substrate, the second electrode has a portion extending out of the pixel region and coupling to the auxiliary conductive layer through a via hole not overlapping the pixel region, the auxiliary conductive layer is insulated and spaced apart from the first electrode and has a mesh or chain shape, and a material of the auxiliary conductive layer is the same as a material of the first and second electrodes of the driving transistor.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 9, 2022
    Inventors: Yuhan QIAN, Libin LIU, Jiangnan LU, Mei LI, Shiming SHI, Jie ZHANG
  • Patent number: 11354927
    Abstract: A fingerprint identification device, a display panel, a fabrication method thereof, and a display device are disclosed. The fingerprint identification device includes a fingerprint sensor, an aperture diaphragm, and a first shielding structure. The fingerprint sensor includes a plurality of sensing units; the aperture diaphragm is on a light incident side of the fingerprint sensor and includes an aperture through which light is allowed to be incident on at least one sensing unit of the fingerprint sensor; and the first shielding structure is on a side of the aperture diaphragm facing away from the fingerprint sensor, and surrounds at least a portion of the aperture.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: June 7, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jianchao Zhu, Libin Liu
  • Patent number: 11335269
    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: February 24, 2020
    Date of Patent: May 17, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yipeng Chen, Libin Liu, Lujiang Huangfu
  • Publication number: 20220148512
    Abstract: A gate driving unit, a gate driving circuit, a gate driving method, and a display device are provided. The gate driving unit includes a first output circuit and a second output circuit; the second output circuit comprises a first output sub-circuit; the first output circuit is respectively electrically connected to the first node, the second node and the first gate driving signal output end and is configured to control the first gate driving signal output end to output a first gate driving signal under the control of the potential of the first node and the potential of the second node; the first output sub-circuit is respectively electrically connected to the first node, the second gate driving signal output end and the first clock signal end, and is configured to control the second gate driving signal output end to be connected to the first clock signal end.
    Type: Application
    Filed: October 27, 2020
    Publication date: May 12, 2022
    Inventors: Can ZHENG, Yu FENG, Guangliang SHANG, Libin LIU, Shiming SHI
  • Publication number: 20220149138
    Abstract: An organic light-emitting diode display substrate, a display panel and a display device. The display substrate includes a source/drain layer (101), a planarization layer (102) and an anode layer (103) which are laminated in sequence; the source/drain layer (101) comprises at least one pair of first signal lines (110); the anode layer (103) comprises a common power line (130), and the common power line (130) is provided with an air discharge hole (131); and the overlapping areas of a projection pattern of the air discharge hole (131) and two first signal lines (110) in any pair of first signal lines (110) are equal, the overlapping areas are greater than 0, and the projection pattern of the air discharge hole (131) is a pattern of an orthographic projection, on the source/drain layer (101), of the air discharge hole (131) on the common power line (130).
    Type: Application
    Filed: November 13, 2020
    Publication date: May 12, 2022
    Inventors: Jiangnan LU, Guangliang SHANG, Can ZHENG, Yu FENG, Libin LIU, Jie ZHANG, Mei LI
  • Patent number: 11328642
    Abstract: The present disclosure provides a gate driving unit, a gate driving method, a gate driving circuitry and a display device. The gate driving unit includes a reverse-phase gate driving signal output end, a normal-phase gate driving signal output end, an input circuitry, an output control circuitry, an input node control circuitry and an output circuitry. The input circuitry is configured to control an input end to be electrically connected to an input node under the control of a first clock signal. The output control circuitry is configured to control a potential at an output node under the control of a potential at the input node and a second clock signal. The input node control circuitry is configured to control the potential at the input node in accordance with the potential at the output node under the control of the second clock signal.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: May 10, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangliang Shang, Lijun Yuan, Haoliang Zheng, Libin Liu, Xing Yao, Seungwoo Han
  • Publication number: 20220139638
    Abstract: A carbon cloth/gallium oxynitride has a chemical formula of GaOxNy, where x=0.1-0.3 and y=0.7-0.9; and has a N/O molar ratio of 2.3 to 9. The carbon cloth/gallium oxynitride is a composite formed by loading gallium oxynitride nanoparticles on carbon cloth fibers, wherein the gallium oxynitride nanoparticles have a size range of 10 to 70 nm, and the carbon cloth/gallium oxynitride has a discharge specific capacitance of 30 to 865 mF cm?2 at current densities ranging from 0.5 to 100 mA cm?2. The working electrode is made from the carbon cloth/gallium oxynitride; and the supercapacitor is composed of the carbon cloth/gallium oxynitride working electrodes, a separator, an electrolyte, and an outer package.
    Type: Application
    Filed: November 3, 2021
    Publication date: May 5, 2022
    Inventors: Ligang GAI, Qing BAN, Jiayu WANG, Haihui JIANG, Libin LIU
  • Patent number: 11315491
    Abstract: A pixel circuit, a display panel, and a driving method. The pixel circuit includes a data writing circuit, an ultrasonic acquiring and converting circuit, a storage circuit, a driving circuit, an output control circuit, and a light emitting device. The ultrasonic acquiring and converting circuit converts a received ultrasonic signal into a converted electrical signal, and provides the converted electrical signal to the data writing circuit; the data writing circuit provides the converted electrical signal or a data signal to a first node; the driving circuit provides a recognition signal obtained according to the converted electrical signal or a driving signal to the fourth node; the storage circuit maintains a voltage difference between the first node and the second node stable; the output control circuit provides a level of the fourth node to a third node; the third node outputs the recognition signal.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: April 26, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qian Yang, Libin Liu, Qiang Wang
  • Patent number: 11315990
    Abstract: The present application discloses a display panel comprising a substrate, a transistor layer on the substrate, and a pixel-defining layer on a side of the transistor layer distal to the substrate to divide the display panel into a plurality of subpixel regions. At least one subpixel region includes a display sub-region and a light-sensitive sub-region. The display panel further includes a plurality of organic light-emitting diodes formed on the transistor layer respectively on the plurality of subpixel regions. Additionally, the display panel includes a plurality of pixel circuits formed in the transistor layer respectively on the plurality of subpixel regions. Each pixel circuit includes at least a display-driving sub-circuit coupled to one organic light-emitting diode. At least one pixel circuit in the at least one subpixel region includes a light-sensing sub-circuit formed on the light-sensitive sub-region and coupled to the display-driving sub-circuit formed on the display sub-region.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: April 26, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Libin Liu, Xiaowei Xu
  • Publication number: 20220122546
    Abstract: A display panel and a display device are disclosed, the display panel includes a plurality of display regions, a peripheral region surrounding the plurality of display regions, a plurality of light-emission control scan driving circuits provided in the peripheral region, a first start signal line, and a second start signal line. The first start signal line is different from the second start signal line, the plurality of display regions include a first display region and a second display region, the plurality of light-emission control scan driving circuits include a first light-emission control scan driving circuit and a second light-emission control scan driving circuit, the first start signal line is configured to provide a first start signal to the first light-emission control scan driving circuit, and the second start signal line is configured to provide a second start signal to the second light-emission control scan driving circuit.
    Type: Application
    Filed: December 28, 2021
    Publication date: April 21, 2022
    Inventors: Yue LONG, Chao ZENG, Yao HUANG, Meng LI, Weiyun HUANG, Libin LIU
  • Patent number: 11308887
    Abstract: A display panel and a display device are disclosed, the display panel includes a plurality of display regions, a peripheral region surrounding the plurality of display regions, a plurality of light-emission control scan driving circuits provided in the peripheral region, a first start signal line, and a second start signal line. The first start signal line is different from the second start signal line, the plurality of display regions include a first display region and a second display region, the plurality of light-emission control scan driving circuits include a first light-emission control scan driving circuit and a second light-emission control scan driving circuit, the first start signal line is configured to provide a first start signal to the first light-emission control scan driving circuit, and the second start signal line is configured to provide a second start signal to the second light-emission control scan driving circuit.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: April 19, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yue Long, Chao Zeng, Yao Huang, Meng Li, Weiyun Huang, Libin Liu
  • Publication number: 20220114958
    Abstract: The display panel includes: a base substrate; a silicon semiconductor layer, the silicon semiconductor layer including active silicon layers of a driving transistor and an initialization transistor, each of the active silicon layers being provided with a first region, a second region and a first channel region therebetween; a first insulating layer, a first conducting layer, a second insulating layer and an oxide semiconductor layer, the oxide semiconductor layer including an active oxide layer of a voltage stabilizing transistor, the oxide semiconductor layer being provided with a third region, a fourth region and a second channel region therebetween. In the same sub-pixel, the second region of the active silicon layer of the initialization transistor is electrically connected to the third region, and the fourth region is electrically connected to a gate electrode of the driving transistor.
    Type: Application
    Filed: May 9, 2020
    Publication date: April 14, 2022
    Inventors: Yu FENG, Libin LIU, Lujiang HUANGFU
  • Publication number: 20220115417
    Abstract: A glossy display panel, a manufacturing method thereof and a display device are provided. The glossy display panel includes a display area and a non-display area; wherein the non-display area includes a binding area, and the glossy display panel includes a first conductive pattern located on a base substrate and located in the binding area; a first insulating layer covering the first conductive pattern, wherein the first insulating layer is provided with a first via hole, and an orthographic projection of the first via hole onto the base substrate is located within an orthographic projection of the first conductive pattern onto the base substrate; a glossy reflection layer, wherein an orthographic projection of the glossy reflection layer onto the base substrate does not overlap with an orthographic projection of the binding area onto the base substrate; and a chip on film.
    Type: Application
    Filed: April 30, 2020
    Publication date: April 14, 2022
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xueyan TIAN, Jianchao ZHU, Libin LIU, Liangjian LI, Caiyu QU, Dengyun CHEN, Ximeng LI
  • Publication number: 20220109033
    Abstract: A display substrate including a first display area including a plurality of first sub-pixels, a plurality of second sub-pixels and a plurality of third sub-pixels, wherein the display substrate includes a plurality of first pixel groups each of which includes two third sub-pixels, one first sub-pixel and one second sub-pixel, the two third sub-pixels are arranged adjacent to each other along a first direction, the one first sub-pixel and the one second sub-pixel are adjacent to at least one of the two third sub-pixels, located on both sides of a straight line passing centers of the two third sub-pixels, and arranged along a second direction different from the first direction; a size of the first sub-pixel and the second sub-pixel in the second direction is smaller than a size of the first sub-pixel and the second sub-pixel in the first direction, respectively.
    Type: Application
    Filed: December 15, 2021
    Publication date: April 7, 2022
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lujiang HUANGFU, Xiaodan JIN, Yinan LIANG, Zhenzhen LI, Wenjing TAN, Libin LIU, Qian YANG, Hongli WANG
  • Patent number: 11296182
    Abstract: An OLED display substrate, a manufacturing method thereof, and a display device are provided. The OLED display substrate includes a base substrate, a conductive pattern, a driving circuit layer, an anode layer, a light-emitting layer and a cathode layer. The driving circuit layer, the anode layer, the cathode layer and the light-emitting layer are arranged at a same side of the base substrate. The conductive pattern is arranged between the base substrate and the driving circuit layer and electrically connected to the cathode layer through a plurality of via holes.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: April 5, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hao Zhang, Libin Liu
  • Publication number: 20220101788
    Abstract: The present disclosure provides a pixel circuit, a pixel driving method and a display device. The pixel circuit includes a driving circuit, an energy storage circuit and a switch control circuit. A first end of the energy storage circuit is coupled to a control end of the driving circuit, a second end of the energy storage circuit is coupled to a first end of the driving circuit via the switch control circuit, and the energy storage circuit is configured to store a voltage. The switch control circuit is configured to control the second end of the energy storage circuit to be electrically coupled to a voltage application end or the first end of the driving circuit under the control of a light-emission control signal from a light-emission control line. The driving circuit is configured to generate a driving current in accordance with a voltage between the control end and first end of the driving circuit.
    Type: Application
    Filed: January 5, 2021
    Publication date: March 31, 2022
    Inventors: Lujiang HUANGFU, Tian DONG, Libin LIU, Xinshe YIN