Claims
- 1. An electro-optical cell, comprising a dielectric which comprises a compound of the formula ##STR40## wherein X is ##STR41## and R is straght-chain alkyl of 1-7 carbon atoms, straight-chain alkoxy of 1-7 carbon atoms, straight-chain alkanoyloxy of 1-7 carbon atoms or p-alkyloxycarbonyloxy wherein the alkoxy group is straight-chain alkoxy of 1-7 carbon atoms,
- or mixtures thereof, disposed between two plate means and means for applying an electric potential to said plates.
- 2. An electro-optical cell, comprising a dielectric which comprises a compound of the formula ##STR42## wherein X is ##STR43## and R is straight-chain alkyl of 1-7 carbon atoms, straight-chain alkoxy of 1-7 carbon atoms,
- straight-chain alkanoyloxy of 1-7 carbon atoms or p-alkyloxycarbonyloxy wherein the alkoxy group is straight-chain alkoxy of 1-7 carbon atoms,
- or mixtures thereof, and one or more nematic compounds having a positive anisotropy disposed between two plate means and means for applying an electric potential to said plates.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3099/73 |
Mar 1973 |
CH |
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Parent Case Info
This is a division, of application Ser. No. 444,923 filed Feb. 22, 1974, now U.S. Pat. No. 3,925,444, issued Dec. 9, 1975.
US Referenced Citations (11)
Foreign Referenced Citations (3)
Number |
Date |
Country |
2,306,739 |
Aug 1973 |
DT |
2,306,738 |
Aug 1973 |
DT |
2,024,269 |
Dec 1971 |
DT |
Divisions (1)
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Number |
Date |
Country |
Parent |
444923 |
Feb 1974 |
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