Patents by Inventor Juncai Ma

Juncai Ma 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: 20230343835
    Abstract: The technology of this application relates to a high electron mobility transistor including a GaN substrate layer, a barrier layer, a circuit layer, and a field plate that are sequentially stacked. The GaN substrate layer includes a main body layer and a channel layer that are stacked, the channel layer is adjacent to the barrier layer, the circuit layer includes a source, a drain, and a dielectric layer, the dielectric layer is disposed between the source and the drain, the field plate is disposed on a side that is of the dielectric layer and that is away from the barrier layer, an orthographic projection of the field plate on the channel layer is a field plate projection, the channel layer includes a modulation region and a non-modulation region, the non-modulation region surrounds the modulation region, the modulation region and the field plate projection at least partially overlap.
    Type: Application
    Filed: June 14, 2023
    Publication date: October 26, 2023
    Inventors: Zhili ZHANG, Jin RAO, Tao LIU, Haijun LI, Wei LU, Shuiming LI, Cen TANG, Qiang HE, Juncai MA, Chunhua FAN, Yangyi ZHU
  • Patent number: 11791078
    Abstract: A method for synchronous production of manganese tetraoxide and ferric oxide for a soft magnetic material by using marine polymetallic nodules includes: 1) crushing and grinding marine manganese nodules and baking to a constant weight; thoroughly mixing with a mixed flux and roasting in a muffle furnace; 2) carrying out solid-liquid separation, washing solid-phase precipitates with water, grinding the solid, adding sulfuric acid, controlling the temperature to be below 50° C., and vacuuming a reactor up; 3) adding a reducing agent to react at room temperature for 5-10 min, adding ammonia water to adjust the pH value to 5.5, and carrying out separation and filtering; 4) controlling the temperatures of manganese sulfate and ferric sulfate solutions to be below 50° C., and adding ammonium sulfide; and 5) washing with deionized water, and calcining at 800-900° C. for 1-3 s by a suspension low-temperature instantaneous firing system.
    Type: Grant
    Filed: May 11, 2023
    Date of Patent: October 17, 2023
    Assignees: CHONGQING SHANGJIA ELECTRONIC CO., LTD., CHONGQING UNIVERSITY
    Inventors: Shuchun Li, Liang Fu, Fusheng Pan, Xinren Liao, Hualin Xie, Juncai Ma, Ping Li, Zhan Xu, Weipeng Zhang
  • Publication number: 20230299022
    Abstract: A semiconductor device includes a substrate, a gate, a second dielectric layer, and a field plate. The substrate has a first dielectric layer, and a thickness of the first dielectric layer in a first area is greater than a thickness of the first dielectric layer in a second area outside the first area. The gate is located on the substrate and in the first area, the gate includes a first gate structure and a second gate structure, and the second gate structure is formed on a side of the first dielectric layer that is away from the substrate and covers a part of the first dielectric layer. The second dielectric layer covers the gate and the first dielectric layer. The field plate is located on the second dielectric layer and is disposed in both the first area and the second area.
    Type: Application
    Filed: May 25, 2023
    Publication date: September 21, 2023
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Cen TANG, Jin RAO, Tao LIU, Haijun LI, Wei LU, Lingcong LE, Juncai MA, Zhili ZHANG
  • Patent number: 11495147
    Abstract: The present disclosure provides a display device including a display panel, a pair of supporting components, a rotating component, a first fixing part and a second fixing part. The display panel comprises: a first side and a second side which are opposite to each other, and the first side is fixedly connected to the first fixing part, and the second side is fixedly connected to the second fixing part. The pair of supporting components comprises: a first supporting component and a second supporting component which are opposite to each other. A first end of the first supporting component is fixedly connected to a first end of the rotating component, and a second end of the first supporting component is fixedly connected to a first end of the second fixing part at the second side of the display panel.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: November 8, 2022
    Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Bowen Qu, Dongling Sun, Haitao Wang, Juncai Ma, Hongqiao Xu, Jinbo Xu
  • Patent number: 11289004
    Abstract: A pixel driving circuit, an organic light emitting display panel and a pixel driving method. The pixel driving circuit includes: a switching sub-circuit, a driving sub-circuit, a storage capacitor and a charge eliminating sub-circuit; the charge eliminating sub-circuit has a control terminal connected to a first scanning signal line, and other terminals connected to the first terminal of the driving sub-circuit, a cathode of the organic light emitting element (OLED) and a reference voltage terminal respectively, and can enable a potential between the anode and the cathode of the organic light emitting element to be reversed under control of the first scanning signal line.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: March 29, 2022
    Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Juncai Ma, Dandan Li, Lisen Wang
  • Patent number: 11201178
    Abstract: An array substrate, a manufacturing method thereof, and a display device are disclosed. The array substrate includes: a base substrate; a gate line located on the base substrate and extending in a first direction; a data line located on the base substrate and extending in a second direction; the gate line and the data line crossing each other to define an orthographic projection of a pixel region on the base substrate; an organic film located on the gate line and the data line and located in the pixel region; and a pixel electrode located on the organic film in the pixel region. The organic film located directly above the data line has a first thickness, the organic film located directly below the pixel electrode has a second thickness, and the first thickness is greater than the second thickness.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: December 14, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Chuanbao Chen, Xiaobin Yin, Juncai Ma
  • Publication number: 20210358380
    Abstract: A pixel driving circuit, an organic light emitting display panel and a pixel driving method. The pixel driving circuit includes: a switching sub-circuit, a driving sub-circuit, a storage capacitor and a charge eliminating sub-circuit; the charge eliminating sub-circuit has a control terminal connected to a first scanning signal line, and other terminals connected to the first terminal of the driving sub-circuit, a cathode of the organic light emitting element (OLED) and a reference voltage terminal respectively, and can enable a potential between the anode and the cathode of the organic light emitting element to be reversed under control of the first scanning signal line.
    Type: Application
    Filed: September 5, 2018
    Publication date: November 18, 2021
    Inventors: Juncai MA, Dandan LI, Lisen WANG
  • Publication number: 20210247655
    Abstract: A display substrate, a display module and a method for driving the display module, and a display apparatus are provided. The display substrate includes a plurality of pixel units. At least one pixel unit includes: a first sub-pixel; a color-changing layer covering a part of a light-emitting surface of the first sub-pixel, the color-changing layer being able to be switched between a first state and a second state, and the color-changing layer being configured to enable a first wavelength light emitted by the first sub-pixel to pass through the color-changing layer in the first state; and a light-emitting layer located on a side of the color-changing layer that is away from the first sub-pixel, and configured to emit a second wavelength light under excitation of the first wavelength light. The second wavelength light is an invisible light.
    Type: Application
    Filed: March 10, 2020
    Publication date: August 12, 2021
    Applicants: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guojun ZHANG, Li JIANG, Jiong HUANG, Peng LI, Lele HAN, Juncai MA
  • Publication number: 20210225216
    Abstract: A touch display panel, a test method thereof and a display device are provided. The touch display panel includes: a base substrate, a plurality of touch electrodes in an array provided in a touch area of the base substrate, at least four test signal lines in a non-touch area of the base substrate, and a plurality of touch traces of connecting the touch electrodes and corresponding test signal lines. Each touch electrode and peripheral touch electrodes correspond to different test signal lines. The peripheral touch electrodes refer to other touch electrodes adjacent to one touch electrode and arranged along the row direction, the column direction and the diagonal direction.
    Type: Application
    Filed: March 1, 2018
    Publication date: July 22, 2021
    Applicants: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Co., Ltd.
    Inventors: Lisen WANG, Juncai MA, Zhaozhe XU, Shiqiang HUANG, Sheng WANG
  • Publication number: 20210175260
    Abstract: An array substrate, a manufacturing method thereof, and a display device are disclosed. The array substrate includes: a base substrate; a gate line located on the base substrate and extending in a first direction; a data line located on the base substrate and extending in a second direction; the gate line and the data line crossing each other to define an orthographic projection of a pixel region on the base substrate; an organic film located on the gate line and the data line and located in the pixel region; and a pixel electrode located on the organic film in the pixel region. The organic film located directly above the data line has a first thickness, the organic film located directly below the pixel electrode has a second thickness, and the first thickness is greater than the second thickness.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 10, 2021
    Inventors: Chuanbao CHEN, Xiaobin YIN, Juncai MA
  • Patent number: 11011554
    Abstract: Embodiments of the present disclosure provide an array substrate, a method for fabricating the same, and a display panel. The array substrate comprises a substrate, first signal lines and touch electrode signal lines the substrate. The touch electrode signal lines intersect with the first signal lines. Each of the touch electrode signal lines includes a plurality of first sub-signal lines and a plurality of second sub-signal lines. The first sub-signal lines are arranged in a same layer as and insulated from the first signal line. Each of the second sub-signal lines run across one of the first signal lines and are electrically connected with the first sub-signal lines adjacent to said second sub-signal line through vias. The first sub-signal lines are arranged in a layer different from the second sub-signal lines.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: May 18, 2021
    Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chuanbao Chen, Xiaobin Yin, Juncai Ma, Chaozhi Yu
  • Patent number: 10978493
    Abstract: The present invention provides a display substrate and a manufacturing method thereof, and a display device. The display substrate comprises a base substrate, and gate lines, data lines, a gate driving circuit and a source driving circuit on the base substrate, the gate lines and the data lines define pixel units, the pixel unit comprises a thin film transistor and a pixel electrode, the data lines are connected to the source driving circuit, the display substrate further comprising gate line connection wires on the base substrate, the gate lines are connected to the gate driving circuit through the gate line connection wires, the gate driving circuit and the source driving circuit are located at edge positions on the base substrate in an extending direction of the data lines, and they are opposite to each other. The widths of the bezel in the extending direction of the gate lines are reduced.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: April 13, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Juncai Ma, Jie Yang
  • Patent number: 10699642
    Abstract: Provided are a pixel circuit and driving method thereof, array substrate and display device. The pixel circuit includes a light-emitting element, a driving sub-circuit, a scanning sub-circuit, and a carrier releasing sub-circuit. The driving sub-circuit is connected to a first electrode of light-emitting element, and the driving sub-circuit is configured to store a driving voltage and control the magnitude of a current passing through light-emitting element according to the driving voltage; the scanning sub-circuit is connected to driving sub-circuit.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: June 30, 2020
    Assignees: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Co., Ltd.
    Inventors: Juncai Ma, Hao Chu
  • Publication number: 20200202753
    Abstract: The present disclosure provides a display device including a display panel, a pair of supporting components, a rotating component, a first fixing part and a second fixing part. The display panel comprises: a first side and a second side which are opposite to each other, and the first side is fixedly connected to the first fixing part, and the second side is fixedly connected to the second fixing part. The pair of supporting components comprises: a first supporting component and a second supporting component which are opposite to each other. A first end of the first supporting component is fixedly connected to a first end of the rotating component, and a second end of the first supporting component is fixedly connected to a first end of the second fixing part at the second side of the display panel.
    Type: Application
    Filed: May 30, 2019
    Publication date: June 25, 2020
    Inventors: Bowen QU, Dongling SUN, Haitao WANG, Juncai MA, Hongqiao XU, Jinbo XU
  • Publication number: 20190369785
    Abstract: Embodiments of the present disclosure provide an array substrate, a method for fabricating the same, and a display panel. The array substrate comprises a substrate, first signal lines and touch electrode signal lines the substrate. The touch electrode signal lines intersect with the first signal lines. Each of the touch electrode signal lines includes a plurality of first sub-signal lines and a plurality of second sub-signal lines. The first sub-signal lines are arranged in a same layer as and insulated from the first signal line. Each of the second sub-signal lines run across one of the first signal lines and are electrically connected with the first sub-signal lines adjacent to said second sub-signal line through vias. The first sub-signal lines are arranged in a layer different from the second sub-signal lines.
    Type: Application
    Filed: June 7, 2018
    Publication date: December 5, 2019
    Inventors: Chuanbao CHEN, Xiaobin YIN, Juncai MA, Chaozhi YU
  • Patent number: 10466557
    Abstract: An array substrate, manufacturing method thereof, and display device. The array substrate comprises a subpixel unit, and the subpixel unit comprises: a first transparent common electrode a pixel electrode disposed over and insulated from the first transparent common electrode, wherein an orthographic projection of the first transparent common electrode on a surface where the pixel electrode is located has an overlapping portion with the pixel electrode; and a second transparent common electrode disposed over and insulated from the pixel electrode.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: November 5, 2019
    Assignees: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Co., Ltd.
    Inventors: Chuanbao Chen, Juncai Ma
  • Publication number: 20190103058
    Abstract: Provided are a pixel circuit and driving method thereof, array substrate and display device. The pixel circuit includes a light-emitting element, a driving sub-circuit, a scanning sub-circuit, and a carrier releasing sub-circuit. The driving sub-circuit is connected to a first electrode of light-emitting element, and the driving sub-circuit is configured to store a driving voltage and control the magnitude of a current passing through light-emitting element according to the driving voltage; the scanning sub-circuit is connected to driving sub-circuit.
    Type: Application
    Filed: August 28, 2018
    Publication date: April 4, 2019
    Inventors: Juncai Ma, Hao Chu
  • Patent number: 10025147
    Abstract: A blue phase liquid crystal display device and a manufacturing method thereof are provided. The blue phase liquid crystal display device includes a plurality of pixel units arranged in a matrix, the blue phase liquid crystal display device including: a first substrate and a second substrate arranged opposite to each other, and a blue phase liquid crystal layer arranged between the first substrate and the second substrate. Each of the pixel units includes: first protrusions located on the first substrate; pixel electrodes covering the first protrusions; second protrusions located on the second substrate; and common electrodes covering the second protrusions.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: July 17, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Juncai Ma
  • Patent number: 9985054
    Abstract: The present disclosure provides an array substrate and a display device that can suppress the adverse effects in display due to difference in gray-scale luminance of adjacent two rows caused by variation in capacitance of adjacent two rows of TFTs as the result of displacement of the data lines. Scan lines and data lines crossing each other are arranged on the array substrate.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: May 29, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Chuanbao Chen, Juncai Ma, Jie Yang
  • Patent number: 9859445
    Abstract: The present invention discloses an array substrate, a display panel and a display device. The array substrate includes a substrate, a gate line and a data line arranged on the substrate, and a thin film transistor arranged in an overlapping region where the gate line and the data line are overlapped; wherein an orthogonal projection of the thin film transistor on the substrate covers an orthogonal projection of the overlapping region of the gate line and the data line on the substrate. Because of design of a location of the thin film transistor according to the present invention, the opening ratio can be increased, the slightly rubbing region adjacent to the thin film transistor can be reduced; and, because of the closed channel region, levels at various positions of the thin film transistor can be uniform, and a bigger contact area provided for the supporting post, thereby increasing supporting ability of the supporting post and compressive property of the panel.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: January 2, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Juncai Ma