IP Library Granted Patent US 6,927,893
Granted Patent B2
US 6,927,893 · App. 10/666,720 · Granted Aug 9, 2005

Electrophoretic device

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Quick Facts
Patent No.
US 6,927,893
App. No.
10/666,720
Granted
Aug 9, 2005
Kind
B2
Abstract

In order to form an electrophoretic layer containing microcapsules at a desired region readily and accurately, a region having lyophobicity is formed on a member, and a microcapsule dispersion is then applied onto the member.

Claims (31)

1. An electrophoretic device comprising:

an electrophoretic layer including microcapsules containing an electrophoretic dispersion disposed between two electrodes;

lyophobic layers having lyophobicity for a microcapsule dispersion in which the microcapsules are dispersed at desired regions of a member; and

said microcapsule dispersion being applied to the member having the lyophobic layers.

2. The electrophoretic device according to claim 1 , wherein the lyophobic layer on a region used as an electrical contact among the regions has such a thickness that conductivity is obtained.

3. An electrophoretic device comprising:

an electrophoretic layer including microcapsules containing an electrophoretic dispersion is disposed between two electrodes;

lyophilic layers having lyophilicity for a microcapsule dispersion in which the microcapsules are dispersed at desired regions of a member; and

the microcapsule dispersion being applied to the member having the lyophilic layers.

4. The electrophoretic device according to claim 3 , wherein the microcapsule dispersion contains a binder.

5. The electrophoretic device according to claim 4 , wherein a migration-promoting operation for promoting migration of the microcapsule dispersion on the member being performed while or after applying the microcapsule dispersion onto the member.

6. An electrophoretic device comprising:

electrophoretic particles contained in microcapsules that migrate in response to voltage applied from electrodes;

lyophobic layers having lyophobicity for a microcapsule dispersion in which the microcapsules are dispersed at desired regions of a member; and

the microcapsule dispersion being applied to the member having the lyophobic layers.

7. The electrophoretic device according to claim 6 , wherein the lyophobic layer on a region used as an electrical contact among the regions having such a thickness that conductivity is obtained.

8. An electrophoretic device comprising:

electrophoretic particles contained in microcapsules that migrate in response to voltage applied from electrodes;

lyophilic layers having lyophilicity for a microcapsule dispersion in which the microcapsules are dispersed at desired regions of a member; and

the microcapsule dispersion being applied to the member having the lyophilic layers.

9. The electrophoretic device according to claim 8 , wherein the microcapsule dispersion contains a binder.

10. The electrophoretic device according to claim 9 , wherein a migration-promoting operation for promoting migration of the microcapsule dispersion on the member being performed while or after applying the microcapsule dispersion onto the member.

11. An electrophoretic device comprising:

a member that includes a first area with lyophobicity and a second area; and

an electrophoretic layer including microcapsules containing a dispersion medium and particles, the electrophoretic layer being selectively arranged in the second area.

12. An electrophoretic device according to claim 11 , wherein the first area on a region is used as an electrical contact among the regions having such a thickness that conductivity is obtained.

13. An electrophoretic device according to claim 11 , wherein the dispersion medium contains a binder.

14. An electrophoretic device comprising:

a member that includes a first area and second area, the second area having with lyophilicity; and

an electrophoretic layer including microcapsules containing a dispersion medium and particles, the electrophoretic layer being selectively arranged in the second area.

15. An electrophoretic device according to claim 14 , wherein the dispersion medium contains a binder.