| 摘要 |
PURPOSE:To form an orientation film whose thickness is uniform, on the whole transparent substrate surface which is not a plane, such as a curved surface, etc., by making a solution containing an orientation processing agent adhere to the surface of a transparent substrate, spreading uniformly the solution by rotating the transparent substrate, and eliminating a solvent by heating. CONSTITUTION:From a discharge port of a discharge device 1, a polyimide solution of a prescribed quantity is dripped down onto a transparent glass 2, and a rotary table 3 is rotated by a motor, so that the polyimide solution is extended and spread over uniformly on the whole surface of the glass 2. Subsequently, the solution is spread uniformly, and simultaneously, a switch of a heater 5 is turned on, and also, a rotation of the rotary table is stopped quietly. In such a case, by turning on the heater 5, N-methyl-pyrolidone being a solvent is heated through a heat transfer by the glass 2, vaporized and eliminated. In such a way an oriented film whose thickness is uniform can be formed on the surface of the transparent substrate which is not a plane, such as a curved surface, etc., and phenomena such as an uneven display, a pin hole, etc. of a liquid crystal display element, which are generated due to a fact that thickness of the oriented film is ununiform can be prevented.
|
