Manufacturing method of liquid crystal cell

Abstract

Abstract PURPOSE:To prevent residual air bubbles from being formed by heating the liquid crystal in a liquid crystal tank until it enters an isotropic body state and injecting the liquid crystal after or right before the evaluation of a vacuum tank is stopped after deaeration is carried out in the vacuum tank and a liquid crystal cell for a specific time. CONSTITUTION:The evacuation of the vacuum tank 31 and liquid crystal cell 11 and the deaeration of the liquid crystal 37 are performed simultaneously, the evaluation of the vacuum tank 31 is stopped, and a heating plate 29 is powered on to heat the liquid crystal 37 in the liquid crystal tank 39 until the liquid crystal becomes an isotropic material. This heating is started after or right before the evacuation is stopped. A shutter 45 is opened again after the liquid crystal 37 is heated until it becomes isotropic, and a rack 41 is elevated to dip a liquid crystal injection port 21 in the liquid crystal 39; and a leak valve 35 is opened to inject the liquid crystal. Consequently, air bubbles are prevented from being formed and the liquid crystal injecting operation is completed in a short time.

Inventors

• 👤 Fuyuhiko Matsumoto
• 👤 松本　冬彦

Bibliographic Details