Inventors:
Howard Sorkin - Berkeley Heights NJ
Assignee:
Timex Corporation - Waterbury CT
International Classification:
C09K 334
C02F 113
Abstract:
Compounds of the formula: ##STR1## wherein R is an alkyl, alkoxy, aryl, aryloxy, arylester, carboxy or ester derived from carboxy are used as liquid crystal materials in electro-optical displays. A typical embodiment is 5-butyl-2-(4-cyanophenyl)-1,3-dioxane which has a very low threshold voltage in nematic displays. On rubbed indium oxide surfaces the threshold voltage was 0. 6 V using predominately the trans isomer. It was nematic over the range 32. 2. degree. C. to 34. 6. degree. C.