Liquid crystal device with a ferroelectric film and method for m

Details Liquid crystal device with a ferroelectric film and method for m Liquid crystal device with a ferroelectric film and method for m

1988-04-20

1990-04-24

Rowan, Kurt

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

427240, 427 26, H01J 900

Patent

active

049196332

ABSTRACT:
An improved liquid crystal device is described such as a display. The device comprises a pair of substrates, a liquid crystal layer, an electrode arrangement, and a ferroelectric film. The ferroelectric film is formed on the inside of the substrate by spinning method using a mixture of a ferroelectric material and an organic resin. When coating, the mixture is diluted with a solvent so that the ferroelectric film can be formed as a thin film. In advance of curring, the ferroelectric film is subjected to an electric field and its dipole moment is aligned and fixed in a direction perpendicular to the substrate. In virtue of the dipole moment, the liquid crystal device can be controlled by applying a voltage in one direction with a high stability.

REFERENCES:
patent: 3725899 (1973-04-01), Greubel
patent: 4040720 (1977-08-01), York
patent: 4052519 (1977-10-01), Prazak, III
patent: 4563059 (1986-01-01), Clark
patent: 4687825 (1987-08-01), Sagou
patent: 4714323 (1987-12-01), Katagiri

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