Manufacture of liquid crystal display element

Abstract

Abstract PURPOSE:To shorten the injection time of a liquid crystal by providing a pressure means on a liquid crystal injection device, setting the inside of a device body from a low pressure to the atmospheric pressure, and next, to a high pressure, and enlarging a pressure difference between the inside of a cell and the atmosphere of the outside at the time of injecting the liquid crystal. CONSTITUTION:A liquid crystal 12 is warmed in advance by a hot plate 13, a cell 10 is attached to a string 9 with its injection port down, a cover plate 2 is closed, and a pressure container 1 is closed up tightly by a cover holder 3. In this state, a valve 6 is closed, a valve 4 is opened, air in the pressure container 1 is exhausted by a vacuum pump 16, and the inside is set to a low pressure. Subsequently, by a handle 7, a reel 8 is rotated and the cell 10 is hung down, and the injection port of the cell 10 is immersed into the liquid crystal 12 in a container 11. Next, the valve 4 is closed, the valve 6 is opened, and by executing an adjustment by a regulator 14 so that the pressure is raised, nitrogen gas is led into the pressure container 1 from a nitrogen gas bomb 15. In this state, until the liquid crystal 12 fills the inside of the cell 10 compactly, it is held as it is, and thereafter, the cell 10 is drawn up by the handle 7, and by opening the cover plate 2, the cell 10 is taken out.

Inventors

• 👤 Kenji Miyagawa
• 👤 堅次 宮川

Bibliographic Details