Method of preparation of a substrate for a liquid crystal display device, a positive display type liquid crystal display device, and a method of constructing such a device

摘要

A liquid crystal display device of the positive display type is constructed using substrates (1), each of which is specially prepared by applying a film of insulating material (3) on the surface contacting the liquid crystal material (5, 6), rubbing the film with a cloth in a predetermined direction, and thereafter treating the film with a silane surfactant (4). This construction, under conditions of no applied voltage, causes the molecules of the liquid crystal material to orient with their axes perpendicular to the surfaces of the substrate with a small angle of tilt in a fixed direction from the normal to the substrate surface.