Patents Assigned to Canon Kabusihi Kaisha
  • Electrophoretic particles, electrophoretic dispersion liquid, and electrophoretic display device
    Patent number: 7303818
    Abstract: An electrophoretic display device includes an electrophoretic dispersion liquid in which electrophotographic particles are dispersed. Each of the electrophotographic particles has a surface salt structure consisting of an acid-derived anionic group and any one of cationic compounds including a specific imidazolium compound, a specific pyridinium compound, a specific quaternary ammonium compound, and a specific trialkylamine-derived compound.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: December 4, 2007
    Assignee: Canon Kabusihi Kaisha
    Inventor: Masato Minami