Liquid crystal cell and three-dimensional liquid crystal cell

Patent metadata

Field	Value
Publication number	US-10656451-B2
Application number	US-201815958249-A
Country	US
Kind code	B2
Filing date	Apr 20, 2018
Priority date	Nov 12, 2015
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

The present invention is directed to a liquid crystal cell in which liquid crystal molecules are not blended into a plastic substrate even if the plastic substrate is deformed through stretching or shrinkage. A liquid crystal cell of the present invention includes at least two plastic substrates of which at least one is a heat-shrinkable film satisfying a heat shrinkage rate of 5% to 75%; a liquid crystal layer; and a polymer layer between at least one plastic substrate and the liquid crystal layer and into which a composition containing at least one monofunctional monomer having a hydrophilic group and is monofunctional acrylate or monofunctional methacrylate, and at least one polyfunctional monomer having two or more functional groups and is polyfunctional acrylate or polyfunctional methacrylate, is polymerized, in which a wavelength of maximum absorbance of each of the monofunctional monomer and the polyfunctional monomer is 190 to 250 nm.

First claim

What is claimed is:

1. A liquid crystal cell, comprising:
at least two plastic substrates of which at least one plastic substrate is a heat-shrinkable film satisfying a heat shrinkage rate of 5% to 75%;
a liquid crystal layer; and
a polymer layer that is disposed between and separates at least one plastic substrate and the liquid crystal layer and into which a composition containing at least one monofunctional monomer that has a hydrophilic group and is selected from the group consisting of monofunctional acrylate and monofunctional methacrylate, and at least one polyfunctional monomer that has two or more functional groups and is selected from the group consisting of polyfunctional acrylate and polyfunctional methacrylate, is polymerized,
wherein a wavelength of maximum absorbance of each of the at least one monofunctional monomer and the at least one polyfunctional monomer is 190 to 250 nm.

2. The liquid crystal cell according to claim 1 ,
wherein the composition containing the at least one monofunctional monomer and the at least one polyfunctional monomer exhibits any one or both of thermosetting properties and ultraviolet curing properties.

3. The liquid crystal cell according to claim 1
wherein the at least one monofunctional monomer has two or more hydrophilic groups.

4. The liquid crystal cell according to claim 1 ,
wherein the hydrophilic group is a nonionic hydrophilic group.

5. The liquid crystal cell according to claim 4 ,
wherein the nonionic hydrophilic group is at least one hydrophilic group selected from the group consisting of a hydroxyl group, a substituted or unsubstituted amino group, and a polyethylene glycol group.

6. The liquid crystal cell according to claim 1 ,
wherein the at least one monofunctional monomer has two or more hydroxyl groups as the hydrophilic group.

7. The liquid crystal cell according to claim 1 ,
wherein the at least one monofunctional monomer has both a hydroxyl group and a substituted or unsubstituted amino group as the hydrophilic group.

8. The liquid crystal cell according to claim 1 ,
wherein a SP value of the at least one monofunctional monomer is 22 to 40.

9. The liquid crystal cell according to claim 2 ,
wherein a SP value of the at least one monofunctional monomer is 22 to 40.

10. The liquid crystal cell according to claim 3 ,
wherein a SP value of the at least one monofunctional monomer is 22 to 40.

11. The liquid crystal cell according to claim 4 ,
wherein a SP value of the at least one monofunctional monomer is 22 to 40.

12. The liquid crystal cell according to claim 5 ,
wherein a SP value of the at least one monofunctional monomer is 22 to 40.

13. The liquid crystal cell according to claim 6 ,
wherein a SP value of the at least one monofunctional monomer is 22 to 40.

14. The liquid crystal cell according to claim 1 ,
wherein all the plastic substrates are heat-shrinkable films satisfying a heat shrinkage rate of 5% to 75%.

15. The liquid crystal cell according to claim 1 ,
wherein at least one plastic substrate is a thermoplastic resin film stretched at a ratio that is greater than 0% and not greater than 300%.

16. The liquid crystal cell according to claim 1 , further comprising:
a conductive layer that is disposed between the plastic substrate and the polymer layer.

17. The liquid crystal cell according to claim 16 ,
wherein the conductive layer is formed of at least one compound selected from the group consisting of metal nanowire, carbon nanotube, graphene, polymer conductor, and metal mesh.

18. The liquid crystal cell according to claim 16 ,
wherein any one or both of the conductive layer and the polymer layer have a migration inhibitor.

19. The liquid crystal cell according to claim 1 , further comprising:
a conductive layer that is disposed between the polymer layer and the liquid crystal layer.

20. A liquid crystal cell, comprising:
at least two plastic substrates of which at least one plastic substrate is a heat-shrinkable film satisfying a heat shrinkage rate of 5% to 75%;
a liquid crystal layer; and
a polymer layer that is disposed between at least one plastic substrate and the liquid crystal layer and that prevents the liquid crystal from blending into the at least one plastic substrate and into which a composition containing at least one monofunctional monomer that has a hydrophilic group and is selected from the group consisting of monofunctional acrylate and monofunctional methacrylate, and at least one polyfunctional monomer that has two or more functional groups and is selected from the group consisting of polyfunctional acrylate and polyfunctional methacrylate, is polymerized,
wherein a wavelength of maximum absorbance of each of the at least one monofunctional monomer and the at least one polyfunctional monomer is 190 to 250 nm.

Assignees

• Fujifilm Corp

Inventors

• Hirakata Junichi

Classifications

• B32B27/285

  comprising polyethers · CPC title

• B32B2307/40

  having particular optical properties · CPC title

• G02F1/133711

  by organic films, e.g. polymeric films · CPC title

• B32B2307/202

  Conductive · CPC title

• B32B27/34

  comprising polyamides · CPC title