Patents by Inventor Yongfeng Bao

Yongfeng Bao 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: 11091699
    Abstract: Provided are a polymerizable compound represented by formula I and a liquid crystal composition formed by combining such a polymerizable compound with a specific liquid crystal component, particularly a PSVA liquid crystal composition for displays or TV applications and a PSA-IPS liquid crystal composition for an IPS mode; in particular, the polymerizable compound has a faster polymerization rate, and a “material system” formed from the selected polymerizable component and liquid crystal component has a low rotary viscosity and good photoelectric properties, and has a high VHR after (UV) photoradiation, this avoiding the problem of the occurrence of residual images to final displays.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: August 17, 2021
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD
    Inventors: Jinsong Meng, Guoliang Yun, Zhian Liang, Xing Zhang, Ke-Lun Shu, Yongfeng Bao, Ruixiang Liang, Ming Li
  • Patent number: 11060030
    Abstract: A negative dielectric anisotropy liquid crystal composition having one or more A-R0—B compounds represented by formula I above as a first component, and one or more compounds represented by formula II above as a second component: The liquid crystal composition has a good stability against light and heat, a lower viscosity, a wider refractive index that may be achieved by adjusting the monomer ratio, and a higher clearing point (a very wide service temperature range). The liquid crystal composition has a higher light transmittance, thus allowing a display device to have a higher brightness or an energy saving effect.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: July 13, 2021
    Assignee: SHIJIAZHUANG CHENGZHIYONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Ke-Lun Shu, Mingxia Wang, Huan Liu, Wenxiao Xing, Zhengqiang Li, Yiping Wang, Yongfeng Bao, Guoliang Yun
  • Patent number: 10655062
    Abstract: A liquid crystal composition having one or more compounds represented by formula I, one or more compounds represented by formula II and one or more compounds represented by formula III: The liquid crystal composition has a good stability against light and heat and a lower viscosity, and can achieve a wider refractive index and higher clearing point by the adjustment the ratio of the monomers. In particular, the liquid crystal composition has a higher light transmittance, allowing a display device to have a higher brightness or an energy saving effect.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: May 19, 2020
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD
    Inventors: Ke-Lun Shu, Mingxia Wang, Huan Liu, Wenxiao Xing, Zhengqiang Li, Yiping Wang, Yongfeng Bao, Guoliang Yun
  • Publication number: 20190352566
    Abstract: Disclosed are a chiral compound, a liquid crystal composition containing the chiral compound, an optically anisotropic body and a liquid crystal display device. The structural formula of said chiral compound is as represented by the following formula I: The chiral compound has a high HTP value and a good solubility; a highly helical, twisted liquid crystal composition can be prepared by adding a small amount of the chiral compound; reducing the addition amount of the chiral compound can reduce the negative effect of the chiral compound on the parameters of the liquid crystal composition; under the conditions of the same addition ratio and the same helical pitch, the chiral compound can reduce the response time of the liquid crystal composition; in addition, the chiral compound has a simple structure and greatly reduces the synthesis cost.
    Type: Application
    Filed: July 19, 2018
    Publication date: November 21, 2019
    Applicant: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Yongfeng BAO, Guoliang YUN, Jinsong MENG, Ming LI, Hubo ZHANG, Lei ZHAO, Zhian LIANG
  • Patent number: 10457870
    Abstract: Disclosed are a chiral compound, a liquid crystal composition containing the chiral compound, an optically anisotropic body and a liquid crystal display device. The structural formula of said chiral compound is as represented by the following formula I: The chiral compound has a high HTP value and a good solubility; a highly helical, twisted liquid crystal composition can be prepared by adding a small amount of the chiral compound; reducing the addition amount of the chiral compound can reduce the negative effect of the chiral compound on the parameters of the liquid crystal composition; under the conditions of the same addition ratio and the same helical pitch, the chiral compound can reduce the response time of the liquid crystal composition; in addition, the chiral compound has a simple structure and greatly reduces the synthesis cost.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: October 29, 2019
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Yongfeng Bao, Guoliang Yun, Jinsong Meng, Ming Li, Hubo Zhang, Lei Zhao, Zhian Liang
  • Publication number: 20190185750
    Abstract: Provided are a polymerizable compound represented by formula I and a liquid crystal composition formed by combining such a polymerizable compound with a specific liquid crystal component, particularly a PSVA liquid crystal composition for displays or TV applications and a PSA-IPS liquid crystal composition for an IPS mode; in particular, the polymerizable compound has a faster polymerization rate, and a “material system” formed from the selected polymerizable component and liquid crystal component has a low rotary viscosity and good photoelectric properties, and has a high VHR after (UV) photoradiation, this avoiding the problem of the occurrence of residual images to final displays.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 20, 2019
    Inventors: Jinsong MENG, Guoliang YUN, Zhian LIANG, Xing ZHANG, Ke-Lun SHU, Yongfeng BAO, Ruixiang LIANG, Ming LI
  • Publication number: 20190185753
    Abstract: A negative dielectric anisotropy liquid crystal composition having one or more A-R0—B compounds represented by formula I above as a first component, and one or more compounds represented by formula II above as a second component: The liquid crystal composition has a good stability against light and heat, a lower viscosity, a wider refractive index that may be achieved by adjusting the monomer ratio, and a higher clearing point (a very wide service temperature range). The liquid crystal composition has a higher light transmittance, thus allowing a display device to have a higher brightness or an energy saving effect.
    Type: Application
    Filed: December 14, 2018
    Publication date: June 20, 2019
    Inventors: Ke-Lun SHU, Mingxia WANG, Huan LIU, Wenxiao XING, Zhengqiang LI, Yiping WANG, Yongfeng BAO, Guoliang YUN
  • Publication number: 20190100696
    Abstract: A liquid crystal composition having one or more compounds represented by formula I, one or more compounds represented by formula II and one or more compounds represented by formula III: The liquid crystal composition has a good stability against light and heat and a lower viscosity, and can achieve a wider refractive index and higher clearing point by the adjustment the ratio of the monomers. In particular, the liquid crystal composition has a higher light transmittance, allowing a display device to have a higher brightness or an energy saving effect.
    Type: Application
    Filed: November 30, 2017
    Publication date: April 4, 2019
    Inventors: Ke-Lun Shu, Mingxia Wang, Huan Liu, Wenxiao Xing, Zhengqiang Li, Yiping Wang, Yongfeng Bao, Guoliang Yun