Helichromic compounds and displays

Details Helichromic compounds and displays Helichromic compounds and displays

1981-06-22

1983-07-19

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

25229901, 2522991, 25229968, 2522997, 350334, 350337, G02F 113, C09K 334

Patent

active

043940706

ABSTRACT:
A composition for use in liquid crystal display devices, consisting essentially of a nematic liquid crystal material and a helichromic compound possessing both a chromophoric moiety and a helical ordering moiety. The helical ordering moiety is capable of helically ordering the mixture of liquid crystal material and helichromic compound. The helichromic compound can be utilized in conventional "guest-host" and "twist nematic" displays as well as in unique helichromic displays. When used in helichromic displays, the helichromic compounds eliminate after-image scattering and enable the display to be operated at reduced voltages.

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