| 摘要 |
<p>PURPOSE:To prevent to drain off a water on a substrate, and to improve a wetting in a coating of the substrate by exposing the substrate in an atmosphere contg. a vaporized silane coupling agent, and then by forming a polyimide resin film thereon followed by rubbing the surface of the prescribed film in a process for forming the orientation film in which the liquid crystal molecule is orientated by forming the polyimide resin film on the substrate, and then rubbing the surface of the prescribed film. CONSTITUTION:The substrate is exposed in the atmosphere contg. the vaporized silane coupling agent such as a hexamethylene disilazane, and then is coated with a solvent or a diluent solution of the prepolymer obtd. by synthesizing a polyhydric carboxylic acid and a diamine according to a printing or a spinner method followed by copolymerizing the prepolymer with a heat treatment to form the polyimide resin film. While the prescribed substrate is coated with the solvent or diluent solution of the almost completely polymerized polyimide polymer according to the printing or the spinner method, followed by evaporating the solvent by heating, and drying it to form the polyimide resin film.</p> |
