Patents Assigned to EPID. Inc.
  • Positive particles in electrophoretic display device composition
    Patent number: 4680103
    Abstract: An improved electrophoretic display device is provided including a first electrode, an opposed grid structure, and dielectric fluid having a plurality of inorganic pigment particles coated with an organosilane derivative movable between positions adjacent the electrodes during operation. The organosilane derivative preferably includes a quaternary ammonium moiety. The positively charged, pigment particles are rapidly released from the first, or viewing, electrode and are resistant to agglomeration.
    Type: Grant
    Filed: January 24, 1986
    Date of Patent: July 14, 1987
    Assignee: EPID. Inc.
    Inventors: Beilin Solomon I., Long K. Truong