Process for producing liquid crystal including discharging liqui

Details Process for producing liquid crystal including discharging liqui Process for producing liquid crystal including discharging liqui

1996-12-20

1998-11-10

Gross, Anita Pellman

Liquid crystal cells, elements and systems

Nominal manufacturing methods or post manufacturing...

Injecting liquid crystal

349154, 349188, G02F 11341, G02F 11339, G02F 113

Patent

active

058351817

ABSTRACT:
A liquid crystal device is produced through the steps of: a) disposing a pair of substrates opposite to each other so as to form a cell between the substrates while leaving a first aperture and a second aperture for communication with an exterior and forming an effective optical modulation region between the first and second apertures, b) heating a liquid crystal material for filling the cell, and c) filling the cell with the liquid crystal material by injecting the liquid crystal material through the first aperture under a pressure difference held between the first and second apertures and, after a prescribed period, allowing the liquid crystal material to be discharged out of the second aperture. In the step c), the first aperture, the second aperture and the effective optical modulation region of the cell may preferably receive external pressures P1, P2 and P3, respectively, satisfying P1>P2 and -1 kg.f/cm.sup.2 .ltoreq.P1-P3.ltoreq.0.5 kg.f/cm.sup.2.

REFERENCES:
patent: Re34690 (1994-08-01), Carrington
patent: 3701368 (1972-10-01), Stern
patent: 5082587 (1992-01-01), Janulis

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