| 摘要 |
PURPOSE:To shorten a time required for injecting a liquid crystal into a liquid crystal cell, by setting the inside of the liquid crystal cell to a low pressure in a vacuum system, and thereafter, injecting the liquid crystal under pressure in a high pressure system at the time of injecting the liquid crystal to the liquid crystal cell. CONSTITUTION:A liquid crystal cell 1 is contained in a vacuum container 2, a vacuum system is formed by a rotary pump 3 and the inside of the liquid crystal cell 1 is brought to pressure reduction to <=0.3Torr internal pressure, and thereafter, a liquid crystal in a liquid crystal tank 7 which is heated by a heater 6 is made to adhere to a liquid crystal injection port 4 and it is covered, and by its liquid crystal itself, the inside of the liquid crystal cell is cut off from the outside. Subsequently, from the vacuum container 2, the liquid crystal cell 1 in which the liquid crystal has adhered to the injection port is taken out, and it is contained into a pressure container 8. The inside of the pressure container 8 is pressurized by N2 gas and held in a high pressure system, the liquid crystal is replenished from a liquid crystal reservoir 10 to the liquid crystal cell 1 which is placed on a liquid crystal cell holding base 9 and heated by the heater 6, and injected by lowering the viscosity of the liquid crystal. The injection of the liquid crystal is executed in a state that the outside of the liquid crystal cell 1 is pressurized and the inside is held in a vacuum of a low pressure, therefore, it is quickened that the liquid crystal goes into the liquid crystal cell. |
