Nematic liquid crystal storage display device

Details Nematic liquid crystal storage display device Nematic liquid crystal storage display device

1985-10-17

1986-07-22

Corbin, John K.

350331R, 350341, G02F 113

Patent

active

046015442

ABSTRACT:
A bistable nematic liquid crystal display cell is electrically switched between topologically equivalent, asymmetric horizontal states. The cell includes upper and lower parallel substrates, upper and lower topographically textured tilt alignment surfaces on the corresponding substrates, and nematic liquid crystal material between the substrates. In an active region of the cell, the tilt alignment surfaces form an unequal reverse tilt boundary condition. In an isolation region surrounding the active region of the cell, the tilt alignment surfaces are formed to avoid the reverse tilt boundary condition.

REFERENCES:
patent: 4333708 (1982-06-01), Boyd et al.
J. Cheng et al., "Boundary-Layer Model of Field Effects in a Bistable Liqud-Crystal Geometry," J. Appl. Phys. 52(4), pp. 2756-2765 (1981).
R. N. Thurston et al., "Optical Properties of a New Bistable Twisted Nematic Liquid Crystal Boundry Layer Display," J. Appl. Phys., 53(6), pp. 4463-4479 (1982).
J. Cheng et al., "A Nematic Liquid Crystal Storage Display Based on Bistable Boundry Layer Configurations," Appl. Phys. Lett. 40(12), pp. 1007-1009, (1982).
DeGennes, P. G., The Physics of Liquid Crystals, pp. 188-191 (Clarendon Press, Oxford 1975).

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