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: 20160035573
    Abstract: An array substrate is provided, wherein a pixel electrode has the same material as a source/drain and has a thickness less than that of the source/drain, or a common electrode has the same material as a gate and has a thickness less than that of the gate, which guarantees transmittance of the array substrate while reducing the process complexity. A display device and a manufacturing method of the array substrate are also provided.
    Type: Application
    Filed: May 28, 2014
    Publication date: February 4, 2016
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Feng ZHANG, Zhanfeng CAO, Qi YAO, Jingxia GU
  • Publication number: 20160027927
    Abstract: A thin film transistor, a manufacturing method thereof and an array substrate are provided. The thin film transistor comprises: a gate electrode (11), a source electrode (15) and a drain electrode (16), and the thin film transistor further comprises a buffer layer (11) which is directly provided at one side or both sides of at least one of the gate electrode (11), the source electrode (15) and the drain electrode (16), wherein, the buffer layer (11) and at least one of the gate electrode (11), the source electrode (15) and the drain electrode (16) directly contacting the buffer layer (11) are conformal. Therefore, the adhesion between an electrode of the thin film transistor and a film layer contacting it is improved and at the same time an atom in the electrode of the thin film transistor is effectively prevented from diffusing to the film layer connected with it, and the reliability of the thin film transistor is improved and the production cost is reduced.
    Type: Application
    Filed: July 25, 2014
    Publication date: January 28, 2016
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhengliang LI, Zhen LIU, Luke DING, Bin ZHANG, Zhanfeng CAO, Guanbao HUI
  • Patent number: 9245661
    Abstract: A conductive film, a method for producing the same and an array substrate comprising the same are provided, so that copper atoms can be efficiently prevented from diffusing into an adjacent semiconductor layer or interlaminated insulation film. The conductive film comprises a base film made of copper or copper alloy, in which hydrogen and/or carbon atoms are distributed.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: January 26, 2016
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Bin Zhang, Zhengliang Li, Zhen Liu, Luke Ding, Zhanfeng Cao, Guanbao Hui
  • Publication number: 20160018923
    Abstract: The present invention relates to the field of display technology, and particularly to a double-sided touch display device which comprises a touch feedback electrode, a first touch receiving electrode and a second touch receiving electrode, wherein the first touch receiving electrode and the second touch receiving electrode are provided at both sides of the touch feedback electrode, respectively. The double-sided touch display device achieve functions of both double-sided touch and transparent display, and has a simple structure and low production cost.
    Type: Application
    Filed: April 30, 2014
    Publication date: January 21, 2016
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Wenlin ZHANG, Zhanfeng CAO, Guanbao HUI
  • Publication number: 20160011457
    Abstract: A fabrication method of a substrate, relates to a field of a display technology, which can avoid a deviation between a line width of a black matrix or a color filter layer actually fabricated and a preset line width, so that the black matrix can just completely shield thin film transistor, a data line and a gate line, and meanwhile the black matrix or the color filter layer more refined are obtained, which improves the display effect of the liquid crystal display. The fabrication method of the substrate comprises: forming a to-be-treated layer, forming a light-shielding layer on the to-be-treated layer, and forming a pattern of the light-shielding layer by a patterning process, wherein the light-shielding layer is made of metal; performing a patterning process on the to-be-treated layer by using the pattern of the light-shielding layer as a mask; and removing the light-shielding layer.
    Type: Application
    Filed: July 17, 2014
    Publication date: January 14, 2016
    Inventors: Feng ZHANG, Guanbao HUI, Zhanfeng CAO, Qi YAO
  • Publication number: 20160004134
    Abstract: An array substrate, a method for fabricating the same and a display device comprising the array substrate are disclosed. The array substrate includes: a base substrate; a plurality of gate lines (s1, s2, s3) and a plurality of data lines (d1, d2, d3) disposed on the base substrate as intersecting with each other to define a plurality of pixel regions (A, B, C, D); a first transparent electrode disposed in each of the pixel regions (A, B, C, D). The array substrate further includes: an insulation element, wherein the insulation element is disposed between two adjacent first transparent electrodes, a top surface of the insulation element is higher than a top surface of the first transparent electrode, and a bottom surface of the insulation element is lower than the top surface of the first transparent electrode. The array substrate may reduce the electric field interference between adjacent first transparent electrodes.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 7, 2016
    Inventors: Feng ZHANG, Zhanfeng CAO, Qi YAO
  • Patent number: 9230995
    Abstract: Embodiments of the present application relate to an array substrate, the manufacturing method thereof and a display device. The array substrate comprises: a substrate, of gate lines and of data lines, a plurality of pixel units, defined by the gate lines and the data lines, each of the pixel units comprising a thin film transistor and a pixel electrode, wherein the thin film transistor comprises a source electrode, a drain electrode, an active layer, a gate insulating layer and a gate electrode, and the source electrode and the drain electrode are provided on the substrate opposing to each other with a channel of the thin film transistor provided therebetween, and the pixel electrode is positioned in a region outside the thin film transistor within the pixel unit, and is extended to a position above the drain electrode to be partly lapped over and directly connected to the drain electrode.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: January 5, 2016
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoyang Tong, Zhanfeng Cao
  • Publication number: 20150372011
    Abstract: An array substrate and manufacturing method thereof, and a display device are capable of preventing light reflection from a drain electrode, and guaranteeing the display effect of the display device. The array substrate includes a drain electrode of a thin film transistor unit, an insulating layer and a pixel electrode. The insulating layer is located between the drain electrode and the pixel electrode, and has a via hole formed therein, and the drain electrode and the pixel electrode are connected through the via hole. A surface of the pixel electrode at the via hole is a rough face.
    Type: Application
    Filed: September 20, 2014
    Publication date: December 24, 2015
    Inventors: Feng ZHANG, Zhanfeng CAO, Qi YAO, Shi SHU
  • Publication number: 20150370109
    Abstract: Embodiments of the invention provide an array substrate and a fabrication method thereof and a display device. The fabrication method of an array substrate includes: forming a semiconductor active layer, a gate insulating layer and a gate electrode on a substrate; forming a light-shielding layer; forming a first color filter layer, forming a second color filter layer and forming a third color filter layer; and forming via holes that respectively penetrate through the first color filter layer, the second color filter layer and the third color filter layers; and forming a pixel electrode and source and drain electrodes.
    Type: Application
    Filed: December 21, 2012
    Publication date: December 24, 2015
    Inventors: ZHANFENG CAO, XIAOYANG TONG, QI YAO
  • Publication number: 20150364327
    Abstract: The present invention discloses a method for preparing a film and a method for preparing an array substrate, and an array substrate. The method for preparing a film comprises forming an AB alloy film subjected to oxidation treatment and forming a first metal A film, wherein the first metal A film is provided to contact with the AB alloy film subjected to oxidation treatment, wherein A is a first metal and B is a second metal, the second metal is selected from active metals in period 2 to period 4 of group 2, and the AB alloy film subjected to oxidation treatment is formed by forming an alloy film of a first metal A and a second metal B in the presence of an oxygen-containing gas.
    Type: Application
    Filed: September 24, 2014
    Publication date: December 17, 2015
    Inventors: Qi YAO, Feng ZHANG, Zhanfeng CAO, Zhengliang LI
  • Publication number: 20150340455
    Abstract: The present invention provides a thin film transistor and a method of fabricating the thin film transistor, an array substrate and a method of fabricating the array substrate, and a display device. The thin film transistor includes a substrate and a gate, an insulation layer, an active layer, a source and a drain which are provided on the substrate. A spacer layer is also provided between the gate and the active layer, and the spacer layer overlaps at least with one of the gate and the active layer having a smaller area in an orthographic projection direction. The spacer layer can effectively prevent material forming the gate from being diffused into the active layer, thereby ensuring stability of performance of the thin film transistor. In the array substrate utilizing the thin film transistor, the spacer layer further extends to a region corresponding to a gate line.
    Type: Application
    Filed: November 27, 2013
    Publication date: November 26, 2015
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhanfeng CAO, Qi YAO, Luke DING, Bing SUN, Xiangchun KONG
  • Patent number: 9190429
    Abstract: A manufacturing method of an array substrate, comprising the following steps: S1 forming a gate signal line and a gate electrode on a base substrate, successively depositing a gate insulating layer, an active layer, and a metal layer, faulting a mask formed of photoresist on the metal layer, and removing the metal layer outside a region for forming a data line and source/drain electrodes through the mask; S2. simultaneously etching the active layer and ashing the photoresist so as to expose the metal layer within a channel region; S3. etching the active layer exposed by the photoresist after being ashed after the step S2; S4. removing the metal layer within the channel region.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: November 17, 2015
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhanfeng Cao, Seongyeol Yoo, Qi Yao
  • Patent number: 9123775
    Abstract: Embodiments of the present invention provide an array substrate, a method for manufacturing the same and a display device. The method for manufacturing a thin film transistor array substrate comprises: forming a passivation layer and a resin layer on a substrate in sequence; removing a part of the resin layer through a patterning process, so as to form a resin-layer via hole passing through the resin layer; etching the passivation layer under the resin-layer via hole, so as to form a via hole passing through the resin layer and the passivation layer; treating the via hole with an etching process, so that a sidewall at the resin layer and a sidewall at the passivation layer for the via hole smoothly adjoin.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: September 1, 2015
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhanfeng Cao, Xiaoyang Tong, Qi Yao
  • Publication number: 20150243399
    Abstract: A conductive film, a method for producing the same and an array substrate comprising the same are provided, so that copper atoms can be efficiently prevented from diffusing into an adjacent semiconductor layer or interlaminated insulation film. The conductive film comprises a base film made of copper or copper alloy, in which hydrogen and/or carbon atoms are distributed.
    Type: Application
    Filed: June 24, 2014
    Publication date: August 27, 2015
    Inventors: Bin Zhang, Zhengliang Li, Zhen Liu, Luke Ding, Zhanfeng Cao, Guanbao Hui
  • Publication number: 20150236055
    Abstract: Embodiments of the present invention provide an array substrate and a method of manufacturing the same, and a display apparatus. The array substrate includes: a substrate; thin film transistors, data lines, gate lines disposed on the substrate; an interlayer insulating layer, disposed below the pixel electrodes, and provided with insulating raised strips protruding in a thickness direction of the substrate towards a space between adjacent pixel electrodes, wherein a projection of each raised strip on the substrate is not overlapped with those of pixel electrodes adjacent thereto in the thickness direction. When the array substrate is applied to a display apparatus, an interference of electric field between the adjacent pixel electrodes can be reduced, thereby avoiding phenomena such as color mixing and light leakage between two adjacent pixel units, and improving display effect of the display apparatus.
    Type: Application
    Filed: June 26, 2014
    Publication date: August 20, 2015
    Inventors: Feng Zhang, Zhanfeng Cao, Qi Yao, Chuanxiang Xu
  • Patent number: 9099440
    Abstract: Embodiments of the present invention disclose a manufacturing method of an array substrate, an array substrate and a display. The manufacturing method comprises: forming a gate electrode of a TFT on a substrate; forming a metal oxide semiconductor thin film and a top metal thin film, and performing a mask process to the metal oxide semiconductor thin film and the top metal thin film, in order to form an active layer opposing the gate electrode and a source electrode and a drain electrode of the TFT respectively; and forming a passivation layer overlying the source electrode and the drain electrode, wherein during the mask process to the top metal thin film, a hydrogen peroxide-based etchant with a pH value between 6 and 8 is used to etch the top metal thin film.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: August 4, 2015
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qi Yao, Tianming Dai, Feng Zhang, Zhanfeng Cao, Peiyu Zhu
  • Publication number: 20150162389
    Abstract: A touch organic light emitting diode (OLED) display device, including: a thin film transistor formed on one side of a substrate, a touch signal feedback layer formed on the thin film transistor, a luminous substrate provided on the touch signal feedback layer, and a touch signal receiving layer formed on the other side of the substrate. An anode layer of the luminous substrate is connected to a drain electrode of the thin film transistor. As to the touch-sensitive OLED display device, a touch screen and an OLED display portion are prepared integratedly, so that the weight and thickness of the display itself are greatly reduced, and the production cost is saved. A manufacturing method of the touch-sensitive OLED display device is further disclosed.
    Type: Application
    Filed: December 17, 2013
    Publication date: June 11, 2015
    Inventors: Wenlin Zhang, Zhanfeng Cao, Shuang Sun
  • Patent number: 8946701
    Abstract: Embodiments of the present invention provide a thin film transistor, an array substrate and a display device. The thin film transistor comprises a gate layer, a first insulating layer, an active layer, an etch stop layer and a source/drain electrode layer, wherein the active layer is made of a metal oxide material, the first insulating layer, the active layer, the etch stop layer and the source/drain electrode layer are sequentially stacked from bottom to top, the source/drain electrode layer contains an interval separating a source electrode and a drain electrode therein, the etch stop layer is located below the interval, and the etch stop layer has a width greater than that of the interval, and the first insulating layer comprises a laminate of a first sub-insulation layer and a second sub-insulation layer, the second sub-insulation layer is in contact with the active layer and made of an oxygen-rich insulating material.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: February 3, 2015
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Zhanfeng Cao, Xiaoyang Tong, Qi Yao, Seongyeol Yoo
  • Patent number: 8755104
    Abstract: Embodiments of the present disclosure provide an electrowetting display panel and the manufacturing method thereof The electrowetting display panel comprises: a first glass substrate; a second glass substrate provided opposite to the first glass substrate; a cavity provided between the first glass substrate and the second glass substrate; a colored conductive liquid filled into the cavity; and a reflecting conductive element provided on the surface of the first glass substrate facing away from the second glass substrate, and corresponding to the cavity, wherein the reflecting conductive element is used for controlling the light transmissivity of the colored conductive liquid within the cavity according to the voltage applied to the reflecting conductive element and reflecting the light passing through the colored conductive liquid toward the second glass substrate.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: June 17, 2014
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Qi Yao, Jianshe Xue, Zhanfeng Cao, Tianming Dai, Feng Zhang
  • Publication number: 20140125901
    Abstract: Embodiments of the present application relate to an array substrate, the manufacturing method thereof and a display device. The array substrate comprises: a substrate, of gate lines and of data lines, a plurality of pixel units, defined by the gate lines and the data lines, each of the pixel units comprising a thin film transistor and a pixel electrode, wherein the thin film transistor comprises a source electrode, a drain electrode, an active layer, a gate insulating layer and a gate electrode, and the source electrode and the drain electrode are provided on the substrate opposing to each other with a channel of the thin film transistor provided therebetween, and the pixel electrode is positioned in a region outside the thin film transistor within the pixel unit, and is extended to a position above the drain electrode to be partly lapped over and directly connected to the drain electrode.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 8, 2014
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoyang Tong, Zhanfeng Cao