Ferroelectric liquid crystal devices using field-stabilized stat

Details Ferroelectric liquid crystal devices using field-stabilized stat Ferroelectric liquid crystal devices using field-stabilized stat

1985-04-26

1987-11-17

Griffin, Donald A.

350340, 350350S, G02F 1133, G02F 118

Patent

active

047070781

ABSTRACT:
In a display device utilizing ferroelectric (e.g., chiral, smectic C material), a stabilizing electric field perpendicular to the cell surfaces forces the molecules to orient themselves in one of two states both of which are parallel to the cell surfaces. A particular state is selected by a switching electric field also oriented perpendicular to the cell surfaces. The stabilizing field has a half-cycle time shorter than the switching time of the ferroelectric material, whereas the switching field duration is longer than or equal to the switching time of the material. The invention enables the use of relatively thick (e.g., .gtoreq.2 .mu.m) ferroelectric cells.

REFERENCES:
patent: 3936815 (1976-02-01), Kogure et al.
patent: 4030997 (1977-06-01), Miller et al.
patent: 4221471 (1980-09-01), Gurtler
patent: 4367924 (1983-01-01), Clark et al.
patent: 4370194 (1983-01-01), Shaver et al.
patent: 4427979 (1984-01-01), Clerc et al.
"Some Novel Ferroelectric Smectic Liquid Crystals," in Liquid Crystals and Ordered Fluids, ed. A. C. Griffin et al., Plenum Publishing Company, 1984, pp. 1-32, J. W. Goodby et al.
"The Ferroelectric Phases Derived from the 4-n-Alkoxycinnamic Acids," Ferroelectrics, vol. 58, (1984), pp. 9-20, T. M. Leslie.
"Ferroelectric Liquid Crystals--Structure and Design," Mol. Cryst. Liq. Cryst., vol. 110, (1984), pp. 175-203, J. W. Goodby et al.
"Submicrosecond Bistable Electro-optic Switching in Liquid Crystals," Applied Physics Letters, vol. 36 (Jun. 1980), pp. 899-901, N. A. Clark et al.
"Molecular Tilt in the Smectic C Phase: A Zigzag Model," Annals de Physique, vol. 3 (1978), pp. 389-396, R. Bartolino et al.
"A Reliable Method of Alignment for Smectic Liquid Crystals," Ferroelectrics, vol. 59 (1984), pp. 137-144, J. S. Patel et al.

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