Liquid crystal composition and liquid crystal light display element using the same
AssigneeMinolta Co., Ltd.
InventorsMasako Iwamatsu, Nobuyuki Kobayashi, Hideaki Ueda
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Abstract
Disclosed is a chiral nematic liquid crystal composition including a nematic liquid crystal composition and a chiral agent. The nematic liquid crystal composition comprises at least one type of liquid crystal ester compound including an ester unit and at least two fluorine atoms therein; and at least one type of liquid crystal tolan compound including a tolan unit therein. By selecting these liquid crystal compounds, a chiral nematic liquid crystal composition having a broad temperature compensation range and a low drive voltage can be realized.
Claims20
A liquid crystal composition that exhibits a cholesteric phase, said liquid crystal composition comprising a nematic liquid crystal composition comprising:
- at least one type of liquid crystal ester compound including an ester unit and at least two fluorine atoms therein;
- and
- at least one type of liquid crystal tolan compound including a tolan unit therein;
- and
- wherein said liquid crystal ester compound and said liquid crystal tolan compound are different.from each other;
- and
- a chiral agent having optical activity.
A liquid crystal display element comprising:
- a pair of substrates at least one of which is transparent;
- and
- a liquid crystal layer retained between said substrates, said liquid crystal layer including a liquid crystal composition that exhibits a cholesteric phase, said liquid crystal composition comprising a nematic liquid crystal composition and a chiral agent, said nematic liquid crystal composition comprising:
- at least one type of liquid crystal ester compound including an ester unit and at least two fluorine atoms therein;
- and
- at least one type of liquid crystal tolan compound including a tolan unit therein;
- and
- wherein said liquid crystal ester compound and said liquid crystal tolan compound are different from each other.
Dependencies are inferred from the claim text.