| 摘要 |
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-CO2-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: <IMAGE> wherein X is selected from the group consisting of: <IMAGE> +TR <IMAGE> wherein R is a straight alkyl having 2-7 carbon atoms.
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