Method for manufacturing a liquid crystal display

Abstract

A liquid crystal material is injected into a liquid crystal cell while a voltage is applied to the liquid crystal cell rendering the liquid crystal molecules parallel to the substrates. The temperature of the vacuum chamber during injection of liquid crystal material is higher than the room temperature to reduce the viscosity of the liquid crystal material, and below the liquid crystal-isotropic transition temperature to maintain the liquid crystal state. To avoid the evaporation of the liquid crystal material, the temperature is preferably lower than the clearing point of the liquid crystal material. The voltage applied to the liquid crystal cell is over the threshold voltage so that the liquid crystal molecules align themselves parallel to the substrate, and the AC voltage having a low frequency of equal to or lower than 60 Hz is preferably used to make the liquid crystal material oscillate laterally. Then, the steric hindrance and interaction between the homeotropic alignment films and the liquid crystal material is reduced and thereby reducing the injection time. In the end seal process, a voltage is applied to the liquid crystal cell as in the filling process to render the liquid crystal molecules parallel to the substrates and make the excess liquid crystal material to discharge easily, and then the injection hole is sealed.

Dependencies are inferred from the claim text.