| 摘要 |
PURPOSE:To obtain an orientation process of a liquid crystal cell permitting regulation of tilt of liquid crystal molecules by arranging a light shielding means having a narrow light transmitting part to between a laser light source and a substrate, and varying the output of the laser light source periodically while moving the light transmitting part along the substrate. CONSTITUTION:An orientation film 3 is formed on a substrate 1 having a transparent electrode 2 formed thereon by applying a photosensitive material on the substrate 1. When laser light 7 emitted from two laser light sources are projected to the orientation film 3 while causing interference between two luminous fluxes, interference fringes comprising alternate light parts and dark parts are generated on the orientation film 3. The direction of the interference fringes is arranged to be parallel to the direction of an arrow mark 9. A light shielding plate 5 provided with a slit-shaped light transmitting part 6 is interposed between the laser light source and the orientation film 3 and moved from an end 8 of the film 3 to another end of the film in the direction of the arrow mark 9, and the output of the laser light source is varied simultaneously periodically. The parts of the orientation film 3 exposed to the laser light are then removed by etching. Thus, many saw teeth-shaped parallel grooves 11 are formed on the surface of the orientation film 3. |
