Display device
View Patent ↗An electrophoretic display includes a lower substrate, an upper substrate, a color display layer on the lower substrate, a pixel electrode on the lower substrate, and a common electrode on the lower substrate or the upper substrate. The common electrode does not overlap the pixel electrode, and an electrophoretic active layer having a dispersion medium and electrophoretic particles is arranged between the lower substrate and the upper substrate. The electrophoretic active layer is a single-polarity electrophoretic particle system, and grayscales are generated depending on the number of electrophoretic particles arranged in a portion of the electrophoretic active layer corresponding to the pixel electrode. The position of the electrophoretic particles is controlled by the magnitude of the electric field applied between the pixel electrode and the common electrode.
1. An electrophoretic display, comprising:
a first substrate;
a second substrate facing the first substrate;
a first electrode arranged on the first substrate;
a second electrode arranged on the first substrate;
a storage electrode arranged on the first substrate, the storage electrode overlapping with the first electrode;
an electrophoretic active layer comprising electrophoretic particles and a dispersion medium, the electrophoretic particles being arranged between the first substrate and the second substrate; and
a light blocking member arranged on the second substrate and disposed opposite to the second electrode,
wherein the electrophoretic active layer is a single-polarity electrophoretic particle system.
2. The electrophoretic display of claim 1 , further comprising a reflective layer arranged between the first electrode and the first substrate.
3. The electrophoretic display of claim 2 , wherein the first electrode electrically connects to a thin film transistor through a contact hole,
wherein the thin film transistor comprises a gate electrode, a source electrode, and a drain electrode and arranged on the first substrate.
4. The electrophoretic display of claim 2 , wherein the reflective layer is a color layer reflecting a light having predetermined wavelength.
5. The electrophoretic display of claim 4 , wherein the color layer represents a color selected from the group consisting of red, green, blue, yellow, magenta, cyan, black, and white.
6. The electrophoretic display of claim 1 , wherein the electrophoretic particles represent a color selected from the group consisting of black, and white.
7. The electrophoretic display of claim 1 , wherein the first electrode is arranged on the reflective layer.
8. The electrophoretic display of claim 1 , further comprising:
a partition arranged between the first substrate and the second substrate and defining a moving space of the electrophoretic particles.
9. The electrophoretic display of claim 1 , wherein the second electrode is arranged on the first substrate, and is on a different layer than the first electrode.
10. The electrophoretic display of claim 1 , wherein the second electrode and the storage electrode are arranged on the same layer.