Electrophoretic display
View Patent ↗An electrophoretic display includes first electrodes, a second electrode placed opposite the first electrodes, and a microcapsule layer placed between the first electrodes and the second electrode. The microcapsule layer contains microcapsules containing a dispersion medium and electrophoretic particles and a binder for retaining the microcapsules between the first electrodes and the second electrode. The electrophoretic particles are sealed in each microcapsule in such a state that the electrophoretic particles are dispersed in the dispersion medium. The following inequality is satisfied: (ρ2·∈2)/(ρ1·∈1)<1 (α) where ρ1 is the resistivity of the dispersion medium, ∈1 is the dielectric constant of the dispersion medium, ρ2 is the resistivity of the binder, and ∈2 is the dielectric constant of the binder.
1. An electrophoretic display comprising:
first electrodes;
a second electrode placed opposite the first electrodes; and
a microcapsule layer placed between the first electrodes and the second electrode,
wherein the microcapsule layer contains microcapsules containing a dispersion medium and electrophoretic particles and a binder for retaining the microcapsules between the first electrodes and the second electrode, the electrophoretic particles are sealed in each microcapsule in such a state that the electrophoretic particles are dispersed in the dispersion medium, and the following inequality is satisfied:
(ρ2·∈2)/(ρ1·∈1)<1 (α)
where ρ1 is the resistivity of the dispersion medium, ∈1 is the dielectric constant of the dispersion medium, ρ2 is the resistivity of the binder, and ∈2 is the dielectric constant of the binder.
2. The electrophoretic display according to claim 1 , wherein the following inequality is satisfied:
ρ2/ρ1<1 (β).
3. The electrophoretic display according to claim 2 , wherein the following inequality is satisfied:
∈2/∈1<1 (γ).