Dual frequency addressable liquid crystals and methods of use

Details Dual frequency addressable liquid crystals and methods of use Dual frequency addressable liquid crystals and methods of use

1984-04-24

1988-03-08

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

2522995, 25229963, 25229964, 25229965, 25229966, 25229967, G02F 113, C09K 1930

Patent

active

047296399

ABSTRACT:
A twisted nematic liquid crystal material used in a dual-frequency addressable liquid crystal cell is disclosed. Specific materials include an eutectic mixture of 2-5 monoester compounds having the formula R--X--Y--CO.sub.2 --Z--R', wherein R and R' is a straight alkyl having 2-7 carbon atoms and where each of X, Y and Z is a phenyl or trans-cyclohexyl and at least one of X, Y and Z is a trans-cyclohexyl. Also included are up to 25 weight percent of dopants to reduce viscosity and up to 10 weight percent of additives to lower the cross-over frequency, the additives being of the formula: ##STR1## wherein X is selected from the group consisting of: ##STR2## wherein R is a straight alkyl having 2-7 carbon atoms.

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