초록 ▼

An electro-optic display comprises a layer (130) of a solid electro-optic material, at least one electrode disposed adjacent the layer (130) of electro-optic material, and a layer (180) of a lamination adhesive interposed between the layer (130) of electro-optic material and the electrode, the lamin

An electro-optic display comprises a layer (130) of a solid electro-optic material, at least one electrode disposed adjacent the layer (130) of electro-optic material, and a layer (180) of a lamination adhesive interposed between the layer (130) of electro-optic material and the electrode, the lamination adhesive (180) having a higher electrical conductivity in a direction perpendicular to the layer of lamination adhesive than in the plane of the layer.

대표청구항 ▼

The invention claimed is: 1. An electro-optic display comprising a layer of a solid electro-optic material, and at least one electrode arranged to apply an electric field to the layer of electro-optic material, the layer of electro-optic material comprising a binder, the binder having a volume resi

The invention claimed is: 1. An electro-optic display comprising a layer of a solid electro-optic material, and at least one electrode arranged to apply an electric field to the layer of electro-optic material, the layer of electro-optic material comprising a binder, the binder having a volume resistivity, measured at 10° C., which does not change by a factor of more than about 3 after being held at 25° C. and 45 per cent relative humidity for 1000 hours. 2. An electro-optic display according to claim 1 wherein the volume resistivity of the binder measured at 10° C. does not change by a factor of more than about 2 after being held at 25° C. and 45 per cent relative humidity for 1000 hours. 3. An electro-optic display according to claim 2 wherein the volume resistivity of the binder measured at 10° C. does not change by a factor of more than about 1.5 after being held at 25° C. and 45 per cent relative humidity for 1000 hours. 4. An electro-optic display according to claim 1 wherein the binder essentially free from plasticizer. 5. An electro-optic display according to claim 1 wherein the binder exhibits a change in the enthalpy associated with any phase transition in the material, as measured by differential scanning calorimetry, that is not more than about 2 Joules per gram after being held at 25° C. and 45 per cent relative humidity for 1000 hours. 6. An electro-optic display according to claim 1 wherein the binder exhibits a change in dielectric constant of less than about 2 after being held at 25° C. and 45 percent relative humidity for 1000 hours. 7. An electro-optic display according to claim 1 wherein the binder comprises a blend of at least two binder materials, at least one of which has a volume resistivity, measured at 10° C., which changes by a factor of more than 3 after being held at 25° C. and 45 percent relative humidity for 1000 hours. 8. An electro-optic display according to claim 1 wherein the binder comprises at least one polyurethane. 9. An electro-optic display according to claim 8 wherein the binder comprises a blend of at least two polyurethanes. 10. An electro-optic display according to claim 9 wherein the binder comprises a blend of a non-ionically stabilized polyester-based polyurethane and an anionically stabilized polyester-based polyurethane. 11. An electro-optic display according to claim 1 wherein the binder has a volume resistivity, measured at 10° C., of not more than about 3×1010 ohm cm. 12. An electro-optic display according to claim 1 wherein the electro-optic medium comprises a rotating bichromal member, polymer-dispersed electrophoretic or microcell electrophoretic medium. 13. An electro-optic display according to claim 1 wherein the electro-optic medium comprises an electrophoretic medium comprising a plurality of capsules, each capsule comprising a capsule wall and an internal phase encapsulated within capsule wall, the internal phase comprising electrically charged particles suspended in a fluid and capable of moving through the fluid on application of an electric field to the electrophoretic material.