Patents by Inventor Fengjuan Liu

Fengjuan 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: 20240128327
    Abstract: The present disclosure has disclosed a semiconductor material, light-emitting device, display panel and display device. The semiconductor material comprises: at least two of an oxide of a first element, an oxide of a second element, an oxide of a third element, an oxide of a fourth element and a compound of fifth element, and comprises at least the oxide of the first element and the compound of the fifth element; the first element comprises at least one of In, Zn, Sn, Cd, Tl and Pb; the second element comprises at least one of Ta, Ga, W, Ba, V, Hf and Nb; the third element comprises at least one of Sn, Zr, Cr and Si; the fourth element comprises at least one of Zn, Al, Sn, Ta, Hf, Zr and Ti; and the compound of the fifth element comprises MxA.
    Type: Application
    Filed: February 17, 2022
    Publication date: April 18, 2024
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangcai YUAN, Hehe HU, Fengjuan LIU, Ce NING, Zhengliang LI
  • Publication number: 20230329037
    Abstract: A display base plate, a preparation method therefor and a display panel are provided in the present disclosure. The display panel can greatly improve resolution while ensuring low power consumption. The display base plate includes a plurality of sub-pixels. Each of the plurality of sub-pixels includes a storage capacitor, a polysilicon transistor and at least one oxide transistor. The storage capacitor includes a first electrode and a second electrode oppositely arranged, and first electrode is arranged at a side of the second electrode away from the substrate. The second electrode is arranged in the same layer as a gate electrode of the polysilicon transistor. The at least one oxide transistor is arranged on a side of the first electrode away from the substrate, and the first electrode at least partially overlaps with an active layer of the at least one oxide transistor in a direction perpendicular to the substrate.
    Type: Application
    Filed: March 4, 2022
    Publication date: October 12, 2023
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Meng Zhao, Feng Guan, Wei Liu, Fengjuan Liu, Lubin Shi, Ce Ning
  • Publication number: 20230317826
    Abstract: A method for manufacturing a thin film transistor, and a thin film transistor are provided. The method includes: forming an active layer on a substrate by a single patterning process; forming a gate insulating layer by deposition on a side of the active layer away from the substrate; forming a first via hole and a second via hole penetrating through the gate insulating layer by a single patterning process, the first and second via holes being located at two ends of the active layer respectively; and forming a first electrode, a gate electrode, and a second electrode on the gate insulating layer by a single patterning process, the first and second electrodes being connected to the active layer through the first and second via holes, respectively, and an orthographic projection of the gate electrode on the substrate at least partially overlapping that of the active layer on the substrate.
    Type: Application
    Filed: March 9, 2022
    Publication date: October 5, 2023
    Inventors: Fengjuan LIU, Dongfang WANG, Wei LIU, Yuhang LU, Hongda SUN, Ce NING, Guangcai YUAN
  • Publication number: 20230268444
    Abstract: A metal oxide semiconductor material includes a semiconductor base material and at least one kind of rare earth compound doped in the semiconductor base material, Each kind of rare earth compound has a general formula represented as (MFD)aAb, where in s the general formula (MFD)aAb, MFD is an element selected from rare earth elements capable of undergoing f-d transition and/or charge transfer transition, A is selected from elements capable of stretching a wavelength range of an absorption spectrum of MFD capable of undergoing the f-d transition and/or the charge transfer transition towards red light into a visible light range, a is a number of the element MFD in the general formula (MFD)aAb, and b is a number of the element A in the general formula (MFD)aAb.
    Type: Application
    Filed: November 2, 2021
    Publication date: August 24, 2023
    Applicants: BOE TECHNOLOGY GROUP CO., LTD., South China University of Technology
    Inventors: Guangcai YUAN, Linfeng LAN, Fengjuan LIU, Ce NING, Hehe HU, Fei WANG, Junbiao PENG
  • Patent number: 11711946
    Abstract: The present disclosure provides a substrate comprising a printing area, wherein the printing area comprises a flat surface and a plurality of separation structures projecting from the flat surface, wherein the plurality of separation structures divide the printing area into a plurality of micro-areas, and in each of the micro-areas, a circular region containing no separation structure has a maximum diameter between 5 ?m and 10 ?m. The present disclosure further provides a light emitting device comprising the substrate and a method for manufacturing the substrate.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: July 25, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongda Sun, Qing Dai, Fengjuan Liu
  • Patent number: 11640095
    Abstract: A display cover plate, a manufacturing method therefor and a display device are provided, The display cover plate includes: a substrate; and an electrochromic unit on the substrate, the electrochromic unit includes: a first electrode on the substrate; an electrochromic layer on a side of the first electrode away from the substrate; and a second electrode on a side of the electrochromic layer away from the substrate, wherein the first electrode and the second electrode are configured to generate an electric field, and the electrochromic layer allows light of different colors to pass through based on a change of the electric field.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: May 2, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Fengjuan Liu, Hongda Sun
  • Publication number: 20230091604
    Abstract: The present disclosure relates to the field of display technologies, and in particular to a thin film transistor and a method for manufacturing the same, an array substrate and a display device. An active layer of the thin film transistor includes at least two metal oxide semi-conductor layers, the at least two metal oxide semi-conductor layers include a channel layer and a first protection layer, and metals in the channel layer include tin, and at least one of indium, gallium and zinc. The first protection layer includes praseodymium used to absorb photo-generated electrons from at least one of the channel layer and the first protection layer which is under light irradiation and reduce a photo-generated current caused by the light irradiation.
    Type: Application
    Filed: January 28, 2021
    Publication date: March 23, 2023
    Inventors: Jie Huang, Jiayu He, Ce Ning, Zhengliang Li, Hehe Hu, Fengjuan Liu, Nianqi Yao, Kun Zhao, Tianmin Zhou, Jiushi Wang, Zhongpeng Tian
  • Patent number: 11563068
    Abstract: A substantially transparent display substrate is provided. The substantially transparent display substrate includes a base substrate; multiple insulating layers on the base substrate and in a display area of the substantially transparent display substrate; and a plurality of grooves in at least a first insulating layer of the multiple insulating layers, wherein at least one of the plurality of grooves at least partially extending into the first insulating layer. The display area includes a plurality of subpixel regions spaced apart from each other by an inter-subpixel region. A respective one of the plurality of subpixel regions includes a light emitting sub-region and a substantially transparent sub-region. At least a portion of a respective one of the plurality of grooves is about an edge of the substantially transparent sub-region of the respective one of the plurality of subpixel regions.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: January 24, 2023
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Hongda Sun, Youngsuk Song, Wei Liu, Jainye Zhang, Fengjuan Liu
  • Patent number: 11557638
    Abstract: An array substrate, a display panel including the array substrate, and a fabrication method of the array substrate are provided. The array substrate includes a base substrate, a light-shielding portion, a thin-film transistor and a capacitor. The light-shielding portion is formed on a first surface of the base substrate. The thin-film transistor is formed on a side of the light-shielding portion away from the base substrate, and includes an active layer. The capacitor is formed on the first surface of the base substrate, and includes a first capacitive electrode and a second capacitive electrode. The first capacitive electrode and the second capacitive electrode are at least partially arranged opposite to each other in a direction perpendicular to the first surface of the base substrate. The first capacitive electrode is provided in a same layer as the light-shielding portion.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: January 17, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongda Sun, Fengjuan Liu, Wei Liu, Jianye Zhang
  • Publication number: 20220344517
    Abstract: A thin film transistor includes a gate electrode, an active layer, a gate insulating layer located between the gate electrode and the active layer, and a source electrode and a drain electrode electrically connected to the active layer. The active layer includes a channel layer and at least one channel protection layer; a material of each of the channel layer and the at least one channel protection layer is a metal oxide semiconductor material. The at least one channel protection layer is a crystallizing layer, and metal elements of the at least one channel protection layer include non-rare earth metal elements including In, Ga, Zn and Sn.
    Type: Application
    Filed: April 30, 2021
    Publication date: October 27, 2022
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Jie Huang, Zhengliang Li, Ce Ning, Hehe Hu, Nianqi Yao, Kun Zhao, Fengjuan Liu, Tianmin Zhou, Liping Lei
  • Publication number: 20220231109
    Abstract: A displaying substrate and a displaying device. The displaying substrate comprises a flexible base plate; a first auxiliary electrode arranged on one side of the flexible base plate, the first auxiliary electrode being connected with a first power cord; a pixel unit arranged on a side of the flexible base plate away from a first metal layer, the pixel unit comprising: thin-film transistors arranged on the side of the flexible base plate away from the first metal layer, an insulation layer and a second auxiliary electrode, the second auxiliary electrode being connected with a second power cord, wherein the plurality of thin-film transistors comprise a drive transistor, the drive transistor has a source connected with the first auxiliary electrode and a drain connected with a first electrode of a light emitting device, a second electrode of the light emitting device is connected with the second auxiliary electrode.
    Type: Application
    Filed: September 24, 2021
    Publication date: July 21, 2022
    Inventors: Fengjuan LIU, Ke WANG, Wei LIU, Tianmin ZHOU
  • Patent number: 11362152
    Abstract: The present disclosure provides an array substrate, an electroluminescent panel and a display device, to solve the problems of more manufacturing processes and complex structures of the large-sized OLED display panel in the related art. The array substrate includes: a substrate, a plurality of light sensors on the substrate, a flat layer on the light sensor, and a connected electrode layer on the flat layer, wherein each of the light sensors includes a first electrode, a photosensitive layer and a second electrode arranged in sequence on the substrate; wherein the connected electrode layer is connected with the second electrode through a via hole penetrating through the flat layer.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: June 14, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Ying Han, Wei Liu, Fengjuan Liu
  • Patent number: 11335893
    Abstract: A manufacturing method of OLED microcavity structure is provided. The manufacturing method includes: forming a reflective anode on a substrate; forming a transparent conductive film layer having a thickness corresponding to a required pixel on the reflective anode; patterning the transparent conductive film layer and the reflective anode with a pixel mask corresponding to the required pixel to form a pattern of the required pixel; and repeating the above steps on a resultant structure surface according to display requirements until a pixel display structure required by a display device is obtained.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: May 17, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ying Han, Wei Liu, Jianye Zhang, Fengjuan Liu, Xing Zhang
  • Patent number: 11302822
    Abstract: A thin film transistor and a fabrication method thereof, an array substrate and a fabrication method thereof are disclosed. The thin film transistor includes: a base substrate; a gate electrode, an active layer, a source electrode and a drain electrode on the base substrate; and the thin film transistor further includes: a light-shielding portion between the active layer and the base substrate, the light-shielding portion includes a groove, and the active layer is in the groove.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: April 12, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Fengjuan Liu, Donghui Yu
  • Patent number: 11239259
    Abstract: The present disclosure provides a substrate, a manufacturing method thereof, and a transparent display device. The substrate comprising: a plurality of pixel units, at least a part of which includes a light-emitting area and a transparent area, and the light-emitting area includes a thin-film transistor; a light blocking member disposed in the light-emitting area and configured to block light that is directed to the thin-film transistor through the transparent area.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: February 1, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Hongda Sun, Fengjuan Liu, Dini Xie, Pengfei Gu
  • Patent number: 11183142
    Abstract: The present disclosure relates to a thin film transistor. The thin film transistor may include a substrate, a source electrode on the substrate, a drain electrode on the substrate, a gate on the substrate, and an active layer on the substrate. The source electrode may include a first teeth portion. The drain electrode may include a second teeth portion. The gate may include a third teeth portion. The active layer may include a plurality of channel regions. The first teeth portion, the second teeth portion, the third teeth portion, and the active layer form a plurality of sub-thin film transistors connected in parallel. The center sub-thin film transistor has a channel region having a smallest width-to-length ratio among the plurality of sub-thin film transistors.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: November 23, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Fengjuan Liu, Ying Han
  • Publication number: 20210336182
    Abstract: The present disclosure provides an OLED display substrate, a manufacturing method thereof and a display device. The method for manufacturing an OLED display substrate includes: fabricating, a first conducting layer and a second conducting layer on a substrate, the first conducting layer being located between the second conducting layer and the substrate; fabricating a pixel definition layer on the second conducting layer, the pixel definition layer defining a plurality of open regions; performing a post-bake processing on the pixel definition layer; and removing portions of the second conductive layer at the open regions of the pixel definition layer to expose the first conductive layer under the second conductive layer.
    Type: Application
    Filed: March 28, 2019
    Publication date: October 28, 2021
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Fengjuan LIU
  • Publication number: 20210328183
    Abstract: A display substrate panel includes a substrate and multiple OLED elements disposed on the substrate, and further includes a thin film encapsulation layer disposed on the OLED elements and a light blocking layer disposed on the thin film encapsulation layer and located between two adjacent OLED elements. A display panel includes the above display substrate panel and a cover panel which is aligned and combined into a cell with the display substrate panel, wherein the cover panel includes a color film layer, and the color film layer has a red color film, a green color film and a blue color film which are disposed to correspond to the OLED elements.
    Type: Application
    Filed: December 23, 2019
    Publication date: October 21, 2021
    Inventors: Hongda SUN, Youngsuk SONG, Fengjuan LIU, Zhen SONG
  • Publication number: 20210328071
    Abstract: A thin film transistor and a fabrication method thereof, an array substrate and a fabrication method thereof are disclosed. The thin film transistor includes: a base substrate; a gate electrode, an active layer, a source electrode and a drain electrode on the base substrate; and the thin film transistor further includes: a light-shielding portion between the active layer and the base substrate, the light-shielding portion includes a groove, and the active layer is in the groove.
    Type: Application
    Filed: May 30, 2019
    Publication date: October 21, 2021
    Inventors: Fengjuan LIU, Donghui YU
  • Patent number: 11101443
    Abstract: Disclosed are an organic electroluminescence display panel, a manufacturing method therefor, and a display device. The organic electroluminescence display panel comprises an array substrate and an opposite substrate which are disposed opposite to each other; the opposite substrate comprises a first base substrate and multiple spacers located on the first base substrate, and the array substrate comprises a second base substrate, multiple sub pixels located on the second base substrate, a pixel defining layer for defining regions of the sub pixels, and elastomers located on the pixel defining layer and having one-to-one correspondence to at least part of the spacers in terms of position; the elastomers are compressed by the corresponding spacers during cell aligning to buffer the pressure applied to the array substrate.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: August 24, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Wei Li, Xing Zhang, Fengjuan Liu