Patents Assigned to Norsk LCD
  • Patent number: 4458988
    Abstract: An optical display cell of the liquid crystal type has two parallel substrates separated from each other by means of ball-shaped monodisperse particles, which are distributed homogeneously and separately across the entire area of the substrate. The dimension of an intermediate layer of liquid crystals between the substrates is, therefore, determined by the diameter of the particles. The particles are distributed across the substrate in a room, which is shielded against dust and foreign particles, by means of pressurized gas, which creates turbulence in the room. The ball-shaped particles are distributed homogeneously across the entire area of the substrate.
    Type: Grant
    Filed: November 5, 1981
    Date of Patent: July 10, 1984
    Assignee: Norsk LCD
    Inventor: Reidar Pettersen