Electro-optic passive display cell

Details Electro-optic passive display cell Electro-optic passive display cell

1979-02-01

1981-08-04

Bauer, Edward S.

Compositions

Radioactive compositions

Nuclear reactor fuel

350350R, 2522991, 25229968, G02F 1137

Patent

active

042819032

ABSTRACT:
An electro-optic passive display device comprising a pair of plates having, as an active component between the plates, a mixture comprising a nematic liquid crystal possessing negative dielectric anisotropy, dichroic molecules and a chiralic compound capable of providing a helical structure to the active component, the chiralic compound concentration being selected to produce a pitch of the helix between 0.9d and 3d, "d" being the distance between plates, critical to ensure the formation of a helical structure only under the effect of an electric field and to provide a high contrast display.

REFERENCES:
patent: 4143947 (1979-03-01), Aftergut et al.

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