Electrodeposition method light modulating device, electrodeposition method reflective display device, and method of manufacturing transparent electrode for an electrodeposition method

1. An electrodeposition method light modulating device comprising:

(1) a transparent electrode, to which a polymer having a metallocene at a side chain thereof is fixed by a chemical bond;

(2) a transparent electrode that is disposed to face the transparent electrode ( 1 ), and forms metal through a reducing reaction of metal ions thereon; and

(3) an electrolytic solution containing the metal ions, which can be reduced by applying current thereto, and disposed between the transparent electrode ( 1 ) and the transparent electrode ( 2 ).

2. The electrodeposition method light modulating device according to claim 1 , wherein the polymer having a metallocene at a side chain thereof is fixed through a coupling agent containing at least one element selected from the group consisting of silicon, titanium, aluminum and zirconium on the transparent electrode ( 1 ).

3. The electrodeposition method light modulating device according to claim 2 , wherein the coupling agent on the transparent electrode ( 1 ) is represented by the following Formula (1):

wherein X independently represents a halogen atom or an alkoxy group; L.sup.1 represents a single bond or a divalent linking group; and A represents an amino group, a ureido group, a sulfide group, a mercapto group, a glycidyl group or an isocyanate group.

4. The electrodeposition method light modulating device according to claim 2 , wherein the coupling agent on the transparent electrode ( 1 ) is represented by the following Formula (2):

wherein X independently represents a halogen atom or an alkoxy group; L.sup.2 and L.sup.2′ each independently represent a single bond or a divalent linking group; B represents an azo group (—N.dbd.N—); and R and R′ each independently represent an arbitrary functional group.

5. The electrodeposition method light modulating device according to claim 2 , wherein the coupling agent on the transparent electrode ( 1 ) is a coupling agent having a bond which generates a radical through cleavage upon being irradiated with an ultraviolet ray.

6. The electrodeposition method light modulating device according to claim 2 , wherein the coupling agent on the transparent electrode ( 1 ) is represented by the following Formula (3):

wherein X independently represents a halogen atom or an alkoxy group; L.sup.3 represents a single bond or a divalent linking group; and D represents a functional group having a vinyl group, an acryloyl group, a methacryloyl group or an allyl group.

7. The electrodeposition method light modulating device according to claim 1 , wherein the transparent electrode ( 2 ) is formed by being treated with a silane coupling agent having two or more amino groups.

8. The electrodeposition method light modulating device according to claim 1 , wherein the polymer having a metallocene at a side chain thereof is represented by the following Formula (1):

wherein R represents a hydrogen atom or a methyl group; Y represents a single bond or a divalent linking group; M represents Fe, Ti, Zr or Ni; and n represents an integer of from 2 to 100,000.

9. The electrodeposition method light modulating device according to claim 8 , wherein Y in the Formula (I) represents a single bond or the following Structural

Formula Y:

wherein R.sup.2 represents a hydrogen atom or an alkyl group.

10. The electrodeposition method light modulating device according to claim 8 , wherein M in the Formula (I) is Fe.

11. The electrodeposition method light modulating device according to claim 1 , wherein the polymer having a metallocene at a side chain thereof is a polymer of a ferrrocene derivative.

12. The electrodeposition method light modulating device according to claim 1 , wherein the metal ions in the electrolytic solution include silver ions.

13. The electrodeposition method light modulating device according to claim 1 , wherein the electrolytic solution contains silver halide.

14. The electrodeposition method light modulating device according to claim 13 , wherein the electrolytic solution further contains a supporting electrolyte, and the concentration (mol/L) of the supporting electrolyte is from 0.5 to two times the concentration of the silver halide.

15. An electrodeposition method reflective display device comprising:

(1) a transparent electrode, to which a polymer having a metallocene at a side chain thereof is fixed by a chemical bond;

(2) a transparent electrode that is disposed to face the transparent electrode ( 1 ), and forms metal through a reducing reaction of metal ions thereon; and

(3) an electrolytic solution that is held by a gelatinous polymer and contains a white pigment and the metal ions, which can be reduced by applying current thereto, and disposed between the transparent electrode ( 1 ) and the transparent electrode ( 2 ).

16. The electrodeposition method reflective display device according to claim 15 , wherein the polymer having a metallocene at a side chain thereof is fixed through a coupling agent containing at least one element selected from the group consisting of silicon, titanium, aluminum and zirconium on the transparent electrode ( 1 ).

17. The electrodeposition method reflective display device according to claim 15 , wherein the transparent electrode ( 2 ) is formed by being treated with a silane coupling agent having two or more amino groups.

18. The electrodeposition method reflective display device according to claim 15 , wherein the polymer having a metallocene at a side chain thereof is a polymer of a ferrrocene derivative.