Compensator for liquid crystal displays

A process for making an optical compensator, comprising the steps of:

• a) coating an orientation layer in a solvent onto a first substrate;
• b) drying the orientation layer;
• c) orienting the orientation layer in a predetermined direction;
• d) coating an anisotropic layer including a polymerizable material in a solvent carrier onto the orientation layer;
• e) drying the anisotropic layer;
• f) polymerizing the anisotropic layer to form a first integral component;
• g) repeating the above steps to form a second integral component;
• and
• h) bonding together the first and second integral components made according to the above processes so that the optic axis of the anisotropic layer in one component is positioned orthogonally relative to the respective optic axis of the anisotropic layer in the other about an axis perpendicular to the plane of the substrates.

A roll-to-roll process for making an optical compensator, comprising the steps of:

• a) roll coating an orientation layer in a solvent onto a moving first
• b) drying the orientation layer;
• c) orienting the orientation layer in a predetermined direction of 45 degrees relative to the roll moving direction;
• d) roll coating an anisotropic layer including a polymerizable material in a solvent carrier onto the orientation layer;
• e) drying the anisotropic layer;
• f) polymerizing the anisotropic layer to form a first roll of multilayer integral component;
• g) repeating the above steps to form a second roll of multilayer integral component;
• and
• h) bonding together the two integral components made according to the above processes so that the optic axis of the anisotropic layer in one component is positioned orthogonally relative to the respective optic axis of the anisotropic layer in the other about an axis perpendicular to the plane of the substrates.