Patents by Inventor Wenfei LIU

Wenfei 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).

  • Difluoromethoxy-bridge liquid crystal compound containing methyl-substituted 2,3-difluorophenyl and crystal composition
    Patent number: 11046888
    Abstract: Provided are a difluoromethoxy-bridge liquid crystal compound containing methyl-substituted 2,3-difluorophenyl, a liquid crystal composition containing the compound, and a liquid crystal display element and a liquid crystal display, wherein said liquid crystal composition is represented by the following formula I: wherein the difluoromethoxy-bridge liquid crystal compound containing methyl-substituted 2,3-difluorophenyl not only has a high clearing point (CP) and a prominent low-temperature miscibility with other liquid crystals, but also has a good stability to ultraviolet light, stability to high temperatures, and particularly also a high vertical dielectric constant (??), and may be applied to the formulation of various types of liquid crystal compositions, and it is particularly prominent that the compound has the advantages of both a good low-temperature miscibility and a high vertical dielectric constant (??).
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: June 29, 2021
    Assignee: Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.
    Inventors: Ming Li, Guoliang Yun, Jinsong Meng, Lei Zhao, Hubo Zhang, Wenfei Liu, Zhengqiang Li
  • DIFLUOROMETHOXY-BRIDGE LIQUID CRYSTAL COMPOUND CONTAINING METHYL-SUBSTITUTED 2,3-DIFLUOROPHENYL AND CRYSTAL COMPOSITION
    Publication number: 20190345388
    Abstract: Provided are a difluoromethoxy-bridge liquid crystal compound containing methyl-substituted 2,3-difluorophenyl, a liquid crystal composition containing the compound, and a liquid crystal display element and a liquid crystal display, wherein said liquid crystal composition is represented by the following formula I: wherein the difluoromethoxy-bridge liquid crystal compound containing methyl-substituted 2,3-difluorophenyl not only has a high clearing point (CP) and a prominent low-temperature miscibility with other liquid crystals, but also has a good stability to ultraviolet light, stability to high temperatures, and particularly also a high vertical dielectric constant (??), and may be applied to the formulation of various types of liquid crystal compositions, and it is particularly prominent that the compound has the advantages of both a good low-temperature miscibility and a high vertical dielectric constant (??).
    Type: Application
    Filed: January 3, 2019
    Publication date: November 14, 2019
    Inventors: Ming LI, Guoliang YUN, Jinsong MENG, Lei ZHAO, Hubo ZHANG, Wenfei LIU, Zhengqiang LI