Claims
- 1. A super-twisted birefringence effect mode liquid crystal display device comprising a first component including at least one compound represented by the general formula (I): ##STR31## wherein R.sup.1 and R.sup.2 each represent an alkyl group having 1 to 8 carbon atoms, and a second compartment including at least one compound represented by the general formula (II): ##STR32## wherein R.sup.3 represents an alkyl group having 1 to 8 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms, R.sup.4 represents H or F, R.sup.5 represents a CN-group or F, and ##STR33## represents ##STR34##
- 2. A super-twisted birefringence effect mode liquid crystal display device as claimed in claim 1, comprising 10 to 50 wt. % of the first component and 10 to 50 wt. % of the second component.
- 3. A super-twisted birefringence effect mode display liquid crystal composition comprising 10 to 50% by weight of a first component including at least one compound represented by the general formula (I): ##STR35## wherein R.sup.1 and R.sup.2 each represent an alkyl group having 1 to 8 carbon atoms, and 10 to 50% by weight of a second component including at least one compound represented by the general formula (II): ##STR36## wherein R.sup.3 represents an alkyl group having 1 to 8 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms, R.sup.4 represents H or F, R.sup.5 represents a CN-group or F, and ##STR37## represents ##STR38##
- 4. A liquid crystal composition as claimed in claim 3, which comprises 10 to 50 wt. % of the first component, 10 to 50 wt. % of the second component, and as a third component at least one compound selected from the group consisting of compounds represented by the general formula (III): ##STR39## wherein R.sup.6 represents an alkyl group having 1 to 8 carbon atoms, R.sup.7 represents H or F, R.sup.8 represents an alkyl group or an alkoxy group having 1 to 8 carbon atoms, F or a CN-group, a compound represented by the general formula (IV): ##STR40## wherein R.sup.9 represents an alkyl group having 1 to 8 carbon atoms, R.sup.10 represents F or an alkyl group or an alkoxy group having 1 to 8 carbon atoms, X is a single bond, --COO--, or --C.tbd.C--, and ##STR41## represents ##STR42## and a compound represented by the general formula (V): ##STR43## wherein R.sup.11 represents F or an alkyl group having 1 to 8 carbon atoms, R.sup.12 represents an alkyl group having 1 to 8 carbon atoms, and ##STR44## represents ##STR45##
- 5. A liquid crystal composition as claimed in claim 4, which comprises compound(s) represented by the following general formula (VII) as the third component: ##STR46## wherein R.sup.14, and R.sup.15 each independently represent an alkyl group or an alkoxy group having 1 to 8 carbon atoms.
- 6. A super-twisted birefringence effect mode liquid crystal display device comprising 10 to 50% by weight of a first component including at least one compound represented by the general formula (I): ##STR47## wherein R.sup.1 and R.sup.2 each represent an alkyl group having 1 to 8 carbon atoms, 10 to 50% by weight of a second component including at least one compound represented by the general formula (II): ##STR48## wherein R.sup.3 represents an alkyl group having 1 to 8 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms, R.sup.4 represents H or F, R.sup.5 represents a CN-group or F, and ##STR49## represents ##STR50## and as a third component at least one of compounds selected from the group consisting of compounds represented by the general formula (III): ##STR51## wherein R.sup.6 represents an alkyl group having 1 to 8 carbon atoms, R.sup.7 represents H or F, R.sup.8 represents an alkyl group or an alkoxy group having 1 to 8 carbon atoms, F or a CN-group, a compound represented by the general formula (IV): ##STR52## wherein R.sup.9 represents an alkyl group having 1 to 8 carbon atoms, R.sup.10 represents F or an alkyl group or an alkoxy group having 1 to 8 carbon atoms, X is a single bond, --COO--, or --C.tbd.C--, and ##STR53## represents ##STR54## a compound represented by the general formula (V): ##STR55## wherein R.sup.11 represents F or an alkyl group having 1 to 8 carbon atoms, R.sup.12 represents an alkyl group having 1 to 8 carbon atoms, and ##STR56## represents ##STR57##
- 7. A super-twisted birefringence effect mode liquid crystal display device as claimed in claim 6, which comprises compound(s) represented by the following general formula (VI) as the second component: ##STR58## wherein R.sup.13 represents an alkenyl group having 2 to 8 carbon atoms.
- 8. A super-twisted birefringence effect mode liquid crystal display device as claimed in claim 6, which comprises compound(s) represented by the following general formula (VII) as the third component: ##STR59## wherein R.sup.14, and R.sup.15 each independently represent an alkyl group or an alkoxy group having 1 to 8 carbon atoms.
Priority Claims (1)
Number |
Date |
Country |
Kind |
62-283115 |
Nov 1987 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 269,161 filed Nov. 9, 1988 now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (2)
Number |
Date |
Country |
WO8802130 |
Mar 1988 |
WOX |
WO8807514 |
Oct 1988 |
WOX |
Non-Patent Literature Citations (3)
Entry |
Baur, "Optical Characteristics of Liquid Crystal Displays" in the Physics and Chemistry of Liquid Crystal Devices, edited by G. J. Sprokel, Plenum Publishing Corporation, pp. 61-78 (1980). |
Akatsuka et al., "Electro-Optical Properties of Supertwisted Nematic Display '86", pp. 400-403 (1986). |
Leenhouts et al., "Electro-Optics of Supertwist Displays; Dependence on Liquid Crystal Material Parameters", Japan Display '86, pp. 388-391 (1986). |
Continuations (1)
|
Number |
Date |
Country |
Parent |
269161 |
Nov 1988 |
|