Bookshelf liquid crystal materials and devices
First Claim
Patent Images
1. A liquid crystal composition comprising a bistable host material and a compound of formula:
-
where R1 and R4 are selected from the group consisting of;
straight chain alkyl chains and terminally or internally branched alkyl chains with from 3 to 12 carbons which are optionally partially fluorinated and may have one carbon replaced with —
O—
;
where A is a cyclohexyl ring, a cyclohexenyl ring or a phenyl ring;
D is either O or
and the D'"'"'s may be different;
a is 0 or 1;
b is 0, 1 or 2;
c is 0 or 1;
d is 0 or 1;
R5 is a fluorine atom;
R2 is a linker selected from the group consisting of;
ethyl;
butyl;
and —
O—
C(═
O)—
; and
and E is a 1,2,3,4-tetrahydronaphthalene ring.
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Accused Products
Abstract
Liquid crystal materials that exhibit bookshelf structures are provided. When these bookshelf materials are incorporated into a bistable host material, the mixture exhibits a higher switching angle and increased A to C phase transition than bistable hosts without the bookshelf material. These bookshelf materials and bistable compositions are useful in liquid crystal displays, for example.
80 Citations
17 Claims
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1. A liquid crystal composition comprising a bistable host material and a compound of formula:
-
where R1 and R4 are selected from the group consisting of;
straight chain alkyl chains and terminally or internally branched alkyl chains with from 3 to 12 carbons which are optionally partially fluorinated and may have one carbon replaced with —
O—
;where A is a cyclohexyl ring, a cyclohexenyl ring or a phenyl ring; D is either O or
and the D'"'"'s may be different;
a is 0 or 1;
b is 0, 1 or 2;
c is 0 or 1;
d is 0 or 1;
R5 is a fluorine atom;
R2 is a linker selected from the group consisting of;
ethyl;
butyl;
and —
O—
C(═
O)—
; and
and E is a 1,2,3,4-tetrahydronaphthalene ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 12, 13)
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10. A liquid crystal composition comprising a bistable host material and a compound of formula:
-
where R1 and R4 are selected from the group consisting of;
straight chain alkyl chains and branched alkyl chains with from 3 to 12 carbons which are optionally partially fluorinated and may have one carbon replaced with —
O—
;D is either O or
and the D'"'"'s may be different;
a is 0 or 1;
b is 0, 1 or 2;
c is 0 or 1;
R5 is a fluorine atom;
R2 is a linker selected from the group consisting of ethyl;
butyl;
and —
O—
C(═
O)—
.- View Dependent Claims (14, 15)
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- 11. A liquid crystal composition comprising a bistable host material and a compound of formula:
Specification
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- Resources
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Current AssigneeDT FLCO, Inc. (Micron Technology, Inc.)
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Original AssigneeDT FLCO, Inc. (Micron Technology, Inc.)
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InventorsThurmes, William, Wand, Michael, More, Kundalika M., Chen, Xin-Hua
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Primary Examiner(s)WU, SHEAN CHIU
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Application NumberUS09/885,862Time in Patent Office993 DaysField of Search252/299.62, 252/299.67, 252/299.63, 428/1.1US Class Current428/1.1CPC Class CodesC09K 19/322 Compounds containing a naph...C09K 2019/325 containing a tetrahydronaph...C09K 2323/00 Functional layers of liquid...
