Liquid crystal element having composite layer
First Claim
1. A liquid crystal element comprising a pair of plates at least one of which is transparent, and a composite layer retained between said plates, said composite layer including a transparent resin substrate and a liquid crystal material which has a cholesteric characteristic, wherein said liquid crystal material contains aromatic rings, said transparent resin substrate contains aromatic rings, and ratio of the number of aromatic rings to that of carbon atoms in the main chain of monomer of the transparent resin substrate is in a range from 1:
- 5 to 1;
12, the number of said carbon atoms being the number of carbon atoms of groups in the main chain of the monomer represented by --CH2 --, --CH-- or the like except for aromatic rings, --CO-- groups, and --COOH-- groups.
1 Assignment
0 Petitions
Accused Products
Abstract
A liquid crystal element includes a pair of plates at least one of which is transparent, and a composite layer retained between the plates and including a liquid crystal material in a transparent resin substrate. In the liquid crystal element, (A) the liquid crystal material in the composite layer contains aromatic rings and exhibits a cholesteric phase, the substrate in the composite layer is made of resin and contains aromatic rings, and a ratio of the number of aromatic rings to that of carbon atoms in the main chain of monomer is in a range from 1:5 to 1:12; (B) the liquid crystal material in the composite layer is formed of a mixture of a liquid crystal material exhibiting a nematic phase and a liquid crystal material exhibiting a smectic phase, and exhibits a cholesteric phase as a whole; or (C) the liquid crystal material in the composite layer is formed of a mixture of a tolane liquid crystal material, a biphenyl liquid crystal material and a chiral ingredient, and exhibits a cholesteric phase as a whole.
57 Citations
27 Claims
-
1. A liquid crystal element comprising a pair of plates at least one of which is transparent, and a composite layer retained between said plates, said composite layer including a transparent resin substrate and a liquid crystal material which has a cholesteric characteristic, wherein said liquid crystal material contains aromatic rings, said transparent resin substrate contains aromatic rings, and ratio of the number of aromatic rings to that of carbon atoms in the main chain of monomer of the transparent resin substrate is in a range from 1:
- 5 to 1;
12, the number of said carbon atoms being the number of carbon atoms of groups in the main chain of the monomer represented by --CH2 --, --CH-- or the like except for aromatic rings, --CO-- groups, and --COOH-- groups. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- 5 to 1;
- 12. A liquid crystal element comprising a pair of plates at least one of which is transparent, and a composite layer retained between said plates, said composite layer including a transparent matrix material and a liquid crystal material which has a cholesteric characteristic, wherein said liquid crystal material is formed of mixture of (a) a first compound of a liquid crystal material having a nematic characteristic, (b) a second compound of a liquid crystal material having a smectic characteristic, and (c) a third compound having a chiral ingredient.
- 14. A liquid crystal element comprising a pair of plates at least one of which is transparent, and a composite layer retained between said plates, said composite layer including a transparent matrix material and a liquid crystal material which has a cholesteric characteristic wherein said liquid crystal material is formed of mixture of a liquid crystal material having a nematic characteristic, a liquid crystal having a smectic characteristic, and a chiral ingredient wherein said transparent matrix material is made of photo-curing resin.
-
16. A liquid crystal element comprising a pair of plates at least one of which is transparent, and a composite layer retained between said plates, said composite layer including a transparent matrix material and a liquid crystal material which has a cholesteric characteristic, wherein said liquid crystal material is formed of mixture of a liquid crystal material having a nematic characteristic, a liquid crystal having a smectic characteristic, and a chiral ingredient wherein said transparent matrix material has a three-dimensionally continuous mesh structure.
- 17. A liquid crystal element comprising a pair of plates at least one of which is transparent, and a composite layer retained between said plates and including a transparent matrix material and a liquid crystal material which has a cholesteric characteristic, wherein said liquid crystal material is formed of a mixture of a first compound having a tolane portion, a second compound containing a biphenyl component and a chiral ingredient.
-
22. A liquid crystal material having a cholesteric characteristic, said liquid crystal material being formed from a mixture of (a) a first compound of a liquid crystal material having a nematic characteristic, (b) a second compound of a liquid crystal material having a smectic characteristic, and (c) a third compound having a chiral ingredient.
-
23. A liquid crystal material having a cholesteric characteristic, said liquid crystal material being formed of a mixture of a first compound having a tolane portion, a second compound containing a biphenyl component and a chiral ingredient, wherein the amount of said second compound is about 30 wt % or less of the amount of said first compound.
-
24. A liquid crystal material having a cholesteric characteristic, said liquid crystal material being formed from a mixture of (a) a first compound of a liquid crystal material having a nematic characteristic said nematic material containing fluorine atoms, (b) a second compound of a liquid crystal material having a smectic characteristic, and (c) a third compound having a chiral ingredient.
Specification