Color display devices

1. A color display comprising

i) an electrophoretic fluid comprising black and white particles carrying opposite charge polarities dispersed in a clear and colorless solvent, and

ii) a plurality of pixels; wherein:

a) each of said pixels comprises two sub-pixels,

b) each of said sub-pixels is sandwiched between a common electrode on a viewing side and at least two colored sub-pixel electrodes,

c) among the sub-pixel electrodes at least one is red, one is green and one is blue, and

d) each of said pixels displays white color by moving the white particles to be near or at the common electrode, displays black color by moving the black particles to be near or at the common electrode, displays red color by moving the black and white particles away to expose the red sub-pixel electrode, displays green color by moving the black and white particles away to expose the green sub-pixel electrode and displays blue color by moving the black and white particles away to expose the blue sub-pixel electrode.

2. The display of claim 1 , wherein the sub-pixel electrodes are rectangular or square in shape.

3. The display of claim 1 , wherein the sub-pixel electrodes are of an irregular shape.

4. The play of claim 1 , wherein the sub-pixel electrodes are coated with a colored layer.

5. The display of claim 1 , wherein the sub-pixel electrodes are on a thin film transistor backplane.

6. The display of claim 1 , wherein said electrophoretic fluid is contained within individual display cells.

7. The display of claim 6 , wherein the display cells are microcups.

8. The display of claim 6 , wherein the display cells are microcapsules.

9. The display of claim 6 , wherein the display cells and the sub-pixel electrodes are aligned.

10. The display of claim 1 , wherein the display cells and the sub-pixel electrodes are unaligned.

11. play of claim 1 , which comprises more than four sub-pixel electrodes in a pixel.