Patents by Inventor Zhanfeng CAO

Zhanfeng CAO 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: 20200242324
    Abstract: An array substrate, a method of manufacturing the array substrate, and a display apparatus are disclosed. The array substrate includes: a base substrate; a plurality of sensing elements disposed on a first side of the base substrate and each configured to convert at least one of a light signal and an acoustic wave signal into an electrical signal; and a plurality of switching devices disposed on a second side of the base substrate opposite to the first side. The plurality of switching devices include a plurality of first switching elements, and each of the plurality of first switching elements is electrically connected to a corresponding one of the plurality of sensing elements to transmit the electrical signal.
    Type: Application
    Filed: May 8, 2019
    Publication date: July 30, 2020
    Inventors: Haixu Li, Zhanfeng Cao, Jianguo Wang
  • Publication number: 20200235127
    Abstract: A micro LED display panel and a method for fabricating the same are disclosed, and the micro LED display panel includes a TFT back panel, and a micro LED fixed on the TFT back panel, wherein the TFT back panel includes a substrate, and a first insulation layer and a second insulation layer stacked over the substrate in that order, wherein the first insulation layer includes a groove filled with the second insulation layer, and a normal projection of the groove onto the substrate does not overlap with a normal projection of a TFT area in the TFT back panel onto the substrate, wherein the rigidity of the second insulation layer is lower than the rigidity of the first insulation layer.
    Type: Application
    Filed: November 13, 2019
    Publication date: July 23, 2020
    Inventors: Haixu LI, Zhanfeng CAO, Ke WANG
  • Patent number: 10692952
    Abstract: The present disclosure provides an OLED substrate and a display device. The OLED substrate includes a base substrate, and a thin-film transistor, a first electrode, and a light-emitting layer arranged in sequence on the base substrate, in which the OLED substrate further includes a light-shielding layer arranged between an active layer of the thin-film transistor and the first electrode.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: June 23, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Haixu Li, Zhanfeng Cao
  • Publication number: 20200185535
    Abstract: An oxide thin film transistor, an array substrate, and preparation methods thereof are disclosed. The method for preparing an oxide thin film transistor comprises a step of forming a pattern comprising an oxide semiconductor active layer on a substrate, wherein the step comprises: forming an amorphous oxide semiconductor thin film on the substrate; performing an excimer laser annealing, at least at a position in the amorphous oxide semiconductor thin film corresponding to a channel region of oxide semiconductor active layer to be formed, such that the amorphous oxide semiconductor material at the laser-annealed position is crystallized, to form a crystalline oxide semiconductor material; and forming the pattern comprising the oxide semiconductor active layer.
    Type: Application
    Filed: August 1, 2019
    Publication date: June 11, 2020
    Inventors: Feng Guan, Guangcai Yuan, Zhi Wang, Chen Xu, Qi Yao, Zhanfeng Cao, Ce Ning, Woobong Lee, Lei Chen
  • Publication number: 20200174172
    Abstract: The present disclosure provides a polarizing device and a method for preparing the same, a display substrate, and a display device. The polarizing device includes: a base substrate, a metal wire grid, and an anti-reflection layer, in which the metal wire grid is arranged on the base substrate, the anti-reflection layer is arranged on the surface of the metal wire grid away from the base substrate, and the anti-reflection layer is a carbon film layer.
    Type: Application
    Filed: May 9, 2019
    Publication date: June 4, 2020
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Shuilang Dong, Da Lu, Qingzhao Liu, Guoqiang Wang, Zhanfeng Cao, Jiushi Wang
  • Publication number: 20200168461
    Abstract: A conductive pattern and a method for manufacturing the same, a thin film transistor, a display substrate and a display device are provided. The method includes: step A, forming a metal layer on a base substrate; step B, forming a first conductive buffer layer on the metal layer; step C, patterning the metal layer and the first conductive buffer layer to form a conductive sub-pattern; and performing steps A to C repeatedly for N times to form N conductive sub-patterns that are stacked on the base substrate. The conductive pattern comprises the N conductive sub-patterns, and N is a positive integer greater than 1.
    Type: Application
    Filed: May 29, 2019
    Publication date: May 28, 2020
    Inventors: Jianguo Wang, Zhanfeng Cao, Haixu Li
  • Publication number: 20200168745
    Abstract: The present application provides an array substrate. The array substrate includes a base substrate; a light shielding layer on the base substrate; a metal oxide layer on a side of the light shielding layer distal to the base substrate; and an active layer on a side of the metal oxide layer distal to the base substrate. The metal oxide layer includes a metal oxide material. The light shielding layer includes amorphous silicon. An orthographic projection of the light shielding layer on the base substrate substantially overlaps with an orthographic projection of the active layer on the base substrate, and substantially overlaps with an orthographic projection of the metal oxide layer on the base substrate.
    Type: Application
    Filed: June 19, 2018
    Publication date: May 28, 2020
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Shengguang Ban, Zhanfeng Cao, Qi Yao
  • Patent number: 10663855
    Abstract: The present disclosure relates to a photoetching parameter adjustment method, apparatus and mask plate, in the field of photoetching technology. The method comprises: forming a photoresist pattern on a first substrate by a photoetching process, wherein the photoresist pattern comprises a photoetching detection pattern; judging whether photoetching parameters of the photoetching process need to be adjusted or not in accordance with the photoetching detection pattern; and adjusting the photoetching parameters when the photoetching parameters need to be adjusted. The present disclosure solves the problem that the reliability of the photoetching parameters is low and improves the reliability of the photoetching parameters. The present disclosure is used for adjusting photoetching parameters.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: May 26, 2020
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Wusheng Li, Zhanfeng Cao
  • Publication number: 20200159381
    Abstract: A feature recognition structure provided by the embodiments of the present disclosure comprises: a plurality of first electrodes and a plurality of second electrodes disposed on a base substrate, wherein orthogonal projections of the plurality of first electrodes and of the plurality of second electrodes on the base substrate intersect each other to form a plurality of overlap regions; and a plurality of functional patterns disposed between one or more of the plurality of first electrodes and corresponding one or more of the plurality of second electrodes, wherein an orthogonal projection of each of the plurality of functional patterns on the base substrate is located in a corresponding one of the plurality of overlap regions; the functional patterns comprise at least one piezoelectric material, and have at least two types of sub-patterns, and different types of the sub-patterns have substantially different piezoelectric coefficients.
    Type: Application
    Filed: August 30, 2018
    Publication date: May 21, 2020
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Shengguang Ban, Zhanfeng Cao, Qi Yao, Yankai Gao
  • Publication number: 20200144297
    Abstract: The present application discloses a thin film transistor, a method of fabricating the same, an array substrate, and a display device. The thin film transistor comprises: a thin film transistor comprising: a light shielding layer; an active layer; a first insulating layer disposed between the light shielding layer and the active layer; a gate; a second insulating layer disposed between the gate and the active layer; a source electrode coupled to a source region of the active layer; a drain electrode coupled to a drain region of the active layer; and at least one conductive connecting member for connecting the light shielding layer to at least one of the source region and the drain region or at least one of the source electrode and the drain electrode, respectively.
    Type: Application
    Filed: December 4, 2018
    Publication date: May 7, 2020
    Inventors: Shengguang BAN, Zhanfeng CAO
  • Patent number: 10627616
    Abstract: A switch element, an array substrate, a display panel, and a display device are disclosed. The switch element includes: a first electrode, an insulation layer, where the first electrode is located on a first side of the insulation layer; a second electrode and a third electrode arranged spaced from each other, both of which are located on a second side of the insulation layer away from the first electrode; and a first oil ink located between the second electrode and the third electrode, where the first oil ink is electrically conductive, and configured to connect or disconnect the second electrode with or from the third electrode under control of the first electrode.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: April 21, 2020
    Assignees: BOE Technology Group Co., Ltd., HEFEI BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Jincheng Gao, Xiaolong He, Zhanfeng Cao, Bin Zhang, Qi Yao, Zhengliang Li, Xuefei Sun, Wei Zhang
  • Patent number: 10607854
    Abstract: Provided in an embodiment of the present invention are a manufacturing method of an electrode pattern, a thin film transistor and a manufacturing method thereof, and a display panel. The manufacturing method of an electrode pattern includes: forming a metal thin film; performing processing on the metal thin film to form a partner layer over a surface of the metal thin film, the partner layer being configured to react with a photoresist to form a hydrogen bond; and performing patterning to form an electrode.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: March 31, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Haixu Li, Zhanfeng Cao, Qi Yao, Jianguo Wang, Fanna Meng
  • Patent number: 10580804
    Abstract: The present disclosure provides an array substrate, a fabricating method thereof, and a display device. The array substrate includes a base substrate which has a first region and a second region respectively provided with a first transistor and a second transistor. The first transistor has a first active layer of low-temperature polysilicon, and the second transistor has a second active layer of metal oxide semiconductor. The first active layer, an interlayer dielectric layer and the second active layer are sequentially disposed on the base substrate, and a barrier layer is disposed between the interlayer dielectric layer and the second active layer.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: March 3, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Haixu Li, Zhanfeng Cao, Qi Yao
  • Publication number: 20200066901
    Abstract: The disclosure relates to a thin film transistor structure, an array substrate, and a method for manufacturing a thin film transistor structure. The thin-film transistor structure includes a base substrate, a thin film transistor on the base substrate. Wherein the thin film transistor includes an active layer and a source/drain electrode on a side, facing towards the base substrate, of the active layer. Wherein the source/drain electrode has a protrusion protruding from an edge portion of the active layer in a direction parallel to a surface of the base substrate.
    Type: Application
    Filed: June 4, 2019
    Publication date: February 27, 2020
    Inventors: Luke DING, Zhanfeng CAO, Jingang FANG, Liangchen YAN, Ce ZHAO, Dongfang WANG
  • Patent number: 10566350
    Abstract: A display substrate, a method of manufacturing the same and a display device are provided. The display substrate includes a base substrate, a plurality of metal particles dispersedly disposed on the base substrate and forming a discontinuous film, a light shielding layer disposed on a side of the base substrate on which the plurality of metal particles are disposed and covering the plurality of metal particles, and a thin film transistor located on a side of the light shielding layer far away from the base substrate.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: February 18, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Shengguang Ban, Zhanfeng Cao, Qi Yao, Dapeng Xue
  • Publication number: 20200035147
    Abstract: A substrate for light-emitting diode, a backlight module and a display device are disclosed. The substrate for light-emitting diode includes a plurality of light-emitting sub-regions, and each of the plurality of light-emitting sub-regions includes at least two anode electrode pads electrically connected through a first parallel-connection line, and at least two cathode electrode pads electrically connected through a second parallel-connection line. The at least two cathode electrode pads are disposed in one-to-one correspondence with the at least two anode electrode pads. At least one series-connection electrode pad group is further disposed between the anode electrode pad and the cathode electrode pad which are corresponding to each other; and each of the at least one series-connection electrode pad group includes two series electrode pads which are electrically connected through a series-connection line.
    Type: Application
    Filed: May 8, 2019
    Publication date: January 30, 2020
    Inventors: Shengguang Ban, Zhanfeng Cao, Zhiwei Liang, Shi Shu
  • Patent number: 10539724
    Abstract: Embodiments of the present disclosure provide an array substrate including a plurality of pixel regions arranged in an array and a black matrix located between the pixel regions, the black matrix including an outward convex curved surface, wherein a material of the black matrix include metal, metal oxide, and metal nitride. The array substrate provided by the present disclosure can effectively reduce the reflectivity of the display panel and improve the image quality.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: January 21, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Feng Zhang, Zhanfeng Cao, Qi Yao
  • Publication number: 20200020757
    Abstract: The present disclosure provides an OLED substrate and a display device. The OLED substrate includes a base substrate, and a thin-film transistor, a first electrode, and a light-emitting layer arranged in sequence on the base substrate, in which the OLED substrate further includes a light-shielding layer arranged between an active layer of the thin-film transistor and the first electrode.
    Type: Application
    Filed: June 19, 2019
    Publication date: January 16, 2020
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Haixu LI, Zhanfeng CAO
  • Patent number: 10504942
    Abstract: The present disclosure provides a method of manufacturing an array substrate and a method of manufacturing a display device. The method of manufacturing an array substrate includes steps of: forming a planarization layer above a base substrate; forming an electrode layer above the planarization layer; forming a metal functional layer above the electrode layer; patterning the metal functional layer by using a multi-greyscale mask layer as a mask; forming an insulating protection layer on a portion of the electrode layer not being covered by the patterned metal functional layer; performing an ashing process on the multi-greyscale mask layer; patterning the electrode layer by using the metal functional layer as a mask; further patterning the metal functional layer by using the multi-greyscale mask layer subjected to the ashing process as a mask.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: December 10, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Haixu Li, Zhanfeng Cao, Qi Yao
  • Patent number: 10502994
    Abstract: The present invention provides a COA substrate and a fabricating method thereof as well as a display device, and relates to the field of display technology, which solves the problem of a relatively large parasitic capacitance to be generated between the data line and the common electrode layer because the common electrode layer is formed on the black matrix directly in the existing technical solution, avoids signal delay, and improves the image display quality of the display. The COA substrate comprises: a black matrix, a color filter, a common electrode layer and an organic insulating film layer formed on the black matrix, the common electrode layer is formed on the organic insulating film layer, the organic insulating film layer is arranged on the color filter and covers the position of the color filter; the material of the organic insulating film layer is an organic insulating material having a relative dielectric constant less than 10.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: December 10, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Feng Zhang, Zhanfeng Cao, Qi Yao