Electrophoretic display device
View Patent ↗An electrophoretic display device is described. The device includes a substrate, first electrodes, an electrophoretic film having electrophoretic particles, and second electrodes. The substrate is has a plurality of pixel regions. First electrodes are disposed respectively on each pixel region, and include first patterns separated from one another and second patterns connected to the first patterns. The second electrode is disposed on the electrophoretic film. The area of one of the electrodes, opposing the other of the electrodes has apertures formed therein, reducing the contact area between the electrode and the electrophoretic film.
1. An electrophoretic display device comprising:
a substrate;
a gate line on the substrate;
a data line being intersected with the gate line, wherein the gate line and the data line form a pixel region;
a thin film transistor being disposed in the pixel region;
a common line being disposed latterly with the gate line;
a protective layer covering the gate line, the data line, the thin film transistor and the common line;
a capacitor upper electrode being connected to a drain electrode of the thin film transistor;
a first electrode disposed on the protective layer and including at least one aperture that exposes the substrate;
an electrophoretic film disposed on the first electrode; and
a second electrode disposed on the electrophoretic film,
wherein the capacitor upper electrode overlaps with the first electrode,
wherein the capacitor upper electrode and the common line form a capacitor,
wherein the capacitor overlaps with the first electrode, and
wherein the first electrode is connected with the capacitor upper electrode through a contact hole formed at the protective layer.
2. The electrophoretic display device according to claim 1 , wherein the aperture has a striped pattern configuration.
3. The electrophoretic display device according to claim 1 , wherein the aperture is dot-shaped.
4. The electrophoretic display device according to claim 1 , wherein the aperture has a width of about 3 μm to about 10 μm.
5. The electrophoretic display device according to claim 1 , wherein the aperture has a length of about 3 μm to about 10 μm.
6. The electrophoretic display device according to claim 1 , further comprising a thin film transistor disposed on the substrate and electrically connected to the first electrode.
7. A display device, comprising:
a substrate having a pixel region;
a gate line on the substrate;
a data line being intersected with the gate line, wherein the gate line and the data line form a pixel region;
a thin film transistor being disposed in the pixel region;
a common line being disposed latterly with the gate line;
a protective layer covering the gate line, the data line, the thin film transistor and the common line;
a capacitor upper electrode being connected to a drain electrode of the thin film transistor;
a first electrode on the protective layer;
a second electrode on the first electrode; and
an electrophoretic film disposed between the first and the second electrode;
wherein an area of at least one of the first electrode or the second electrode is less than an area of the pixel region,
wherein the capacitor upper electrode overlaps with the first electrode,
wherein the capacitor upper electrode and the common line form a capacitor,
wherein the capacitor overlaps with the first electrode, and
wherein the first electrode is connected with the capacitor upper electrode through a contact hole formed at the protective layer.
8. The display device of claim 7 , wherein the area of at least one of the first electrode or the second electrode is approximately equal to half of the area of the pixel region.
9. The display device of claim 7 , wherein at least one of the first electrode or the second electrode is patterned with apertures.