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).

  • Patent number: 10049612
    Abstract: The present disclosure discloses a pixel structure and a preparation method thereof, a pixel display method and an array substrate. The pixel structure comprises: a thin film transistor TFT for controlling a Micro-Electro-Mechanical System MEMS switch; the Micro-Electro-Mechanical System MEMS switch being used for controlling transmission amount of outgoing light of a quantum dot light emitting diode QLED device; the quantum dot light emitting diode QLED device being a top emission type for emitting light constantly based on a constant light emitting driving signal.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: August 14, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Bin Zhang, Zhanfeng Cao, Xiangchun Kong, Qi Yao, Jincheng Gao, Zhengliang Li, Xiaolong He
  • Publication number: 20180224738
    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: Application
    Filed: December 1, 2017
    Publication date: August 9, 2018
    Inventors: Wusheng Li, Zhanfeng Cao
  • Patent number: 10019934
    Abstract: The present disclosure discloses a pixel structure and a preparation method thereof, a pixel display method and an array substrate. The pixel structure comprises: a thin film transistor TFT for controlling a Micro-Electro-Mechanical System MEMS switch; the Micro-Electro-Mechanical System MEMS switch being used for controlling transmission amount of outgoing light of a quantum dot light emitting diode QLED device; the quantum dot light emitting diode QLED device being a top emission type for emitting light constantly based on a constant light emitting driving signal.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: July 10, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Bin Zhang, Zhanfeng Cao, Xiangchun Kong, Qi Yao, Jincheng Gao, Zhengliang Li, Xiaolong He
  • Publication number: 20180190681
    Abstract: The present disclosure provides an array substrate and a method for manufacturing the same and a display panel and a display device comprising the same. The method for manufacturing the array substrate provided in the present disclosure comprises: forming a first metal layer; forming an uneven structure on a surface of the first metal layer; providing a photoresist on the surface of the first metal layer where the uneven structure has been formed; and exposing and developing the photoresist and etching the first metal layer so as to form a first metal pattern.
    Type: Application
    Filed: August 29, 2017
    Publication date: July 5, 2018
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jiushi WANG, Zhanfeng CAO, Qi YAO, Jing FENG
  • Publication number: 20180172881
    Abstract: An anti-reflective tandem structure is provided. The anti-reflective tandem structure comprises a plurality of light-absorbing layers, wherein at least two of the plurality of light-absorbing layers have different concentrations of a non-metal element.
    Type: Application
    Filed: December 10, 2015
    Publication date: June 21, 2018
    Inventors: FENG ZHANG, ZHANFENG CAO, QI YAO
  • Publication number: 20180136748
    Abstract: The present application discloses a touch substrate, a display device having the same, and a manufacturing method thereof. The touch substrate comprises a touch electrode and a diffusive reflector disposed on the touch electrode.
    Type: Application
    Filed: December 10, 2015
    Publication date: May 17, 2018
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Wusheng LI, Zhanfeng CAO
  • Patent number: 9966365
    Abstract: In accordance with various embodiments, the disclosed subject matter provides a display device and a related fabricating method. In some embodiments, the display device comprises: a substrate and a plurality of display units on the substrate, wherein each of the plurality of display units comprises: a first color sub-pixel, comprising a first quantum dot material and a first light source, wherein the first color sub-pixel is configured to provide a first color light by stimulating the first quantum dot material with the first light source; and a second color sub-pixel, comprising a second quantum dot material and a second light source, wherein the second color sub-pixel is configured to provide a second color light by stimulating the second quantum dot material with the second light source.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: May 8, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaolong He, Bin Zhang, Shi Shu, Qi Yao, Zhanfeng Cao, Seong Yeol Yoo
  • Patent number: 9941482
    Abstract: This invention provides an organic electroluminescent device, a method of preparing the same, a display substrate comprising the same, and a display apparatus. According to the invention, the agglomeration and self quenching of quantum dots can be effectively prevented as the quantum dots are uniformly dispersed in electroluminescent polymer fibers. Due to the fluorescence resonance energy transfer effect between the electroluminescent polymer and the quantum dots, a higher quantum yield is achieved, and the luminescence efficiency of the quantum dots can be improved accordingly. Furthermore, since the light emission from the quantum dots is achieved by the fluorescence resonance energy transfer effect, which is an energy transfer process without damage to the quantum dots, the damage to quantum dots is less and thus the lifetime thereof can be beneficially increased, as compared to the direct charge injection mode of the prior art.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: April 10, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaolong He, Zhanfeng Cao, Qi Yao
  • Publication number: 20180062034
    Abstract: The invention relates to a light emitting device, a manufacturing method thereof and a display device. The light emitting device comprises: a substrate, and a first electrode layer, a second electrode layer and a light emitting layer arranged above the substrate, the light emitting layer being disposed between the first electrode layer and the second electrode layer, the light emitting layer comprises a hole transport layer having a first thickness which is capable of avoiding performance degradation of the light emitting device.
    Type: Application
    Filed: October 11, 2016
    Publication date: March 1, 2018
    Inventors: Xiaolong HE, Shi SHU, Wei XU, Zhanfeng CAO, Jikai YAO
  • Patent number: 9905705
    Abstract: A thin film transistor, an array substrate and a display device are provided by the present disclosure. The thin film transistor is on a base substrate, a profile of a width edge of the channel includes an up-and-down curved section in a direction perpendicular to a surface of the base substrate.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: February 27, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiangchun Kong, Zhanfeng Cao, Wei Zhang, Bin Zhang, Xiaolong He, Jincheng Gao, Qi Yao, Zhengliang Li, Chuanxiang Xu
  • Patent number: 9893140
    Abstract: The present disclosure provides a display panel separation pillar and a method for manufacturing the same, a display panel and a display device. The display panel separation pillar includes a first material pattern and a second material pattern on the first material pattern. The first material pattern includes an upper surface and a lower surface opposite to each other, and a first separation lateral side and a second separation lateral side which are opposite to each other and between the upper surface and the lower surface. The second material pattern includes an upper surface and a lower surface opposite to each other. The upper surface of the first material pattern directly contacts with the lower surface of the second material pattern. Projections of the first separation lateral side and the second separation lateral side of the first material pattern onto a plane of the lower surface of the second material pattern are between edges of the lower surface of the second material pattern.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: February 13, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaolong He, Feng Zhang, Zhanfeng Cao, Shi Shu, Yaohui Gu, Wei Xu, Miki Kashima
  • Publication number: 20180039071
    Abstract: A display panel includes a first substrate and a second substrate which are arranged opposed to each other. The space between the first substrate and the second substrate is separated into a plurality of sub-pixel regions. Within each sub pixel region, a first electrode, a first fluid layer, a second fluid layer, a hydrophobic dielectric layer and a second electrode are arranged in this order. The first fluid layer is made of hydrophilic liquid. The second fluid layer is made of ink. When no electric field is applied between the first electrode and the second electrode, the ink spreads over the surface of the hydrophobic dielectric layer. When an electric field is applied between the first electrode and the second electrode, the ink aggregates to expose the hydrophobic dielectric layer.
    Type: Application
    Filed: July 22, 2016
    Publication date: February 8, 2018
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaolong HE, Zhanfeng CAO, Qi YAO, Bin ZHANG, Zhengliang LI, Wei ZHANG, Tingting ZHOU, Jincheng GAO, Jiushi WANG
  • Publication number: 20180034007
    Abstract: An electrode structure and an organic light emitting unit and the manufacturing method thereof are disclosed. The electrode structure includes: a substrate; a plurality of strip-like partitions disposed on the substrate; and an electrode covering a surface of the substrate. The electrode includes a first portion located on a surface of each of the strip-like partitions and a second portion located between two adjacent strip-like partitions, each of the strip-like partitions includes an upper layer and a lower layer which are stacked with each other, the upper layer and the lower layer are made of different materials; a bottom surface of the upper layer completely covers a top surface of the lower layer, and a width of the bottom surface of the upper layer is larger than a width of the top surface of the lower layer in a plane perpendicular to an extending direction of the strip-like partitions.
    Type: Application
    Filed: December 17, 2015
    Publication date: February 1, 2018
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Xiaolong He, Shi Shu, Wei Xu, Zhanfeng Cao, Qi Yao
  • Patent number: 9880659
    Abstract: The touch control display panel comprises an array substrate and an alignment substrate arranged in alignment with the array substrate. The alignment substrate comprises a black matrix arranged on a first substrate. The black matrix protrudes from the first substrate, and the orthographic projection of a side of the black matrix away from the first substrate on the first substrate covers an orthographic projection of a side of the black matrix close to the first substrate on the first substrate. The first substrate is further provided with a plurality of touch control electrode groups formed using the black matrix as a mask plate. The present invention can effectively reduce the number of mask plates and the process steps as well as the production cost, which can further reduce the thickness of the touch control display panel and facilitates the manufacture of light and thin products.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: January 30, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Feng Zhang, Zhanfeng Cao, Qi Yao
  • Publication number: 20180019346
    Abstract: A thin film transistor, a method of fabricating the same, an array substrate and a display device are disclosed. The method of fabricating the thin film transistor comprises: forming a semiconductor layer; forming a conductive film that does not react with acid solution on the semiconductor layer to be employed as a protective layer; forming a source electrode and a drain electrode on the protective layer; and removing a portion of the protective layer between the source electrode and the drain electrode to expose a portion of the semiconductor layer between the source electrode and the drain electrode.
    Type: Application
    Filed: September 28, 2017
    Publication date: January 18, 2018
    Inventors: Jincheng GAO, Bin Zhang, Xiaolong He, Xiangchun Kong, Qi Yao, Zhanfeng Cao, Zhengliang Li
  • Publication number: 20170371078
    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: Application
    Filed: March 11, 2016
    Publication date: December 28, 2017
    Inventors: Feng ZHANG, Zhanfeng CAO, Qi YAO
  • Publication number: 20170365684
    Abstract: A method for forming a mask pattern is provided, comprising forming a negative photoresist on a substrate; in an environment without oxygen, to performing a first exposure on the negative photoresist by use of a first ordinary mask plate, so that a fully-cured portion of the negative photoresist is exposed to light and a semi-cured portion and a removed portion of the negative photoresist are not exposed to light; in an environment with oxygen, performing a second exposure on the negative photoresist by use of a second ordinary mask plate, so that the semi-cured portion of the negative photoresist is exposed to light and the removed portion of the negative photoresist not exposed to light; removing the uncured negative photoresist and forming the mask pattern.
    Type: Application
    Filed: September 1, 2016
    Publication date: December 21, 2017
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Bin Zhang, Tingting Zhou, Zhen Liu, Zhanfeng Cao, Shi Shu, Qi Yao, Feng Guan
  • Patent number: 9835921
    Abstract: An array substrate, a manufacturing method thereof and a display device are disclosed. The array substrate comprises a plurality of pixel unit regions each including a thin-film transistor (TFTs) and a pixel electrode. A first insulating layer provided with a first through hole and a second through hole is formed between an active layer of the TFT and the pixel electrode. A source electrode of the TFT is connected with the active layer through the first through hole. A drain electrode of the TFT is lapped onto the pixel electrode and connected with the active layer through the second through hole. The array substrate can prevent the oxidization of metal such as copper in the process of patterning a transparent conductive film.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: December 5, 2017
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Zhanfeng Cao, Luke Ding, Wenlin Zhang, Xiangchun Kong, Feng Zhang, Qi Yao, Zhixing Zhang
  • Patent number: 9812469
    Abstract: An array substrate and a display device are disclosed. The array substrate includes a peripheral area in which a plurality of gate electrode material lines, a plurality of source-drain electrode material lines and a plurality of first metal lines are disposed. Overlapping areas are provided between or among the gate electrode material lines, the source-drain material lines and the first metal lines; a number of the overlapping areas of the source-drain material lines and the first metal lines is less than a number of the overlapping areas of the source-drain material lines and the gate electrode material lines; the gate electrode material lines, the source-drain material lines and the first metal lines are configured as connecting lines of circuits in the peripheral area.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: November 7, 2017
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Zhanfeng Cao, Feng Zhang, Bin Zhang, Xiaolong He, Jincheng Gao, Qi Yao, Zhengliang Li, Xiangchun Kong
  • Patent number: 9812579
    Abstract: A thin film transistor, a method of fabricating the same, an array substrate and a display device are disclosed. The method of fabricating the thin film transistor comprises: forming a semiconductor layer; forming a conductive film that does not react with acid solution on the semiconductor layer to be employed as a protective layer; forming a source electrode and a drain electrode on the protective layer; and removing a portion of the protective layer between the source electrode and the drain electrode to expose a portion of the semiconductor layer between the source electrode and the drain electrode.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: November 7, 2017
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jincheng Gao, Bin Zhang, Xiaolong He, Xiangchun Kong, Qi Yao, Zhanfeng Cao, Zhengliang Li