Claims
- 1. A liquid crystal compound represented by the formula (I): ##STR60## wherein; R.sub.1 represents an alkyl group having 5-18 carbon atoms,
- R.sub.2 represents an alkyl group having 6-16 carbon
- Y represents a group ##STR61## and A represents ##STR62## and which exhibits optically tristable states in S.sup.* (3) phase.
- 2. A liquid crystal compound according to claim 1 wherein A represents a group ##STR63## and Y represents a group ##STR64##
- 3. A liquid crystal compound represented by the following formula: ##STR65## and which exhibits optically tristable states in S.sup.* (3) phase.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2-178336 |
Jul 1990 |
JPX |
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Parent Case Info
This is a continuation-in-part of the FWC 62 application Ser. No. 07/863,317 filed Apr. 1, 1992, abandoned which is a continuation of Ser. No. 07/724,997 filed Jul. 2, 1991 abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4921632 |
Nakamura et al. |
May 1990 |
|
Foreign Referenced Citations (5)
Number |
Date |
Country |
339987 |
Nov 1989 |
EPX |
341922 |
Nov 1989 |
EPX |
264925 |
Oct 1990 |
JPX |
2264918 |
Oct 1990 |
JPX |
344352 |
Feb 1991 |
JPX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
724997 |
Jul 1991 |
|
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
863317 |
Apr 1992 |
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