Electro-wetting display device

1 . An electro-wetting display (EWD) device, comprising:

a first substrate;

a second substrate parallel to the first substrate;

a plurality of partition walls arranged in a lattice on the second substrate thereby defining a plurality of pixel regions; and

a first fluid and a second fluid, the first and second fluids immiscible with each other and disposed between the first and second substrates, the second fluid being electro-conductive or polar, the first fluid provided between the second substrate and the second fluid;

wherein each pixel region comprises at least one switch element and a storage capacitor, the at least one switch element and the storage capacitor are both disposed at a same side of the pixel region.

2 . The EWD device of claim 1 , wherein each pixel region further comprises a pixel electrode connected to the switch element, the pixel electrode occupying a main region of the pixel region other than where the at least one switch element is located.

3 . The EWD device of claim 2 , wherein each pixel region further comprises a common line connected to one electrode of the storage capacitor.

4 . The EWD device of claim 3 , wherein each pixel region further comprises two opposite short sides and two opposite long sides, and the at least one switch element and the storage capacitor are disposed adjacent to one of the short sides.

5 . The EWD device of claim 4 , wherein the common line is parallel and proximate to the same short side that the at least one switch element is adjacent to.

6 . The EWD device of claim 5 , wherein a distance between the common line and the short side is 0.2-0.5 times a length of each long side of the pixel region.

7 . The EWD device of claim 3 , wherein a length of the storage capacitor electrode connected to the common line is 0.1-0.25 times a length of each long side of the pixel region.

8 . The EWD device of claim 4 , further comprising a plurality of first driving lines and a plurality of second driving lines that cross each other and correspond to the partition walls.

9 . The EWD device of claim 8 , wherein the at least one switch element comprises one transistor with a gate electrode connected to one corresponding first driving line, a source electrode connected to one corresponding second driving line, and a drain electrode connected to the pixel electrode and the other electrode of the storage capacitor.

10 . The EWD device of claim 8 , wherein the at least one switch element comprises a first transistor and a second transistor, gate electrodes of the first and second transistors are connected to one corresponding first driving line, a source electrode of the first transistor is connected to one corresponding second driving line, a drain electrode of the first transistor is connected to a source electrode of the second transistor, and a drain electrode of the second transistor is connected to the pixel electrode and the other electrode of the storage capacitor.

11 . The EWD device of claim 8 , wherein the at least one switch element comprises a first transistor and a second transistor, the first and second transistors share a common gate electrode, the gate electrode is connected to one corresponding first driving line, a source electrode of the first transistor is connected to one corresponding second driving line, a drain electrode of the first transistor is connected to a source electrode of the second transistor, and a drain electrode of the second transistor is connected to the pixel electrode and the other electrode of the storage capacitor.

12 . The EWD device of claim 11 , wherein a width of the gate electrode is 0.7-0.98 times a length of each short side of the pixel region.

13 . The EWD device of claim 1 , further comprising a hydrophobic insulator disposed between the first fluid and the second substrate.

14 . An electro-wetting display (EWD) device, comprising:

a first substrate;

a second substrate parallel to the first substrate;

a driving circuit layer provided at the second substrate;

a plurality of partition walls arranged in a lattice on the driving circuit layer, thereby defining a plurality of pixel regions, each pixel region having two short sides and two long sides; and

a first fluid and a second fluid, the first and second fluids immiscible with each other and disposed between the driving circuit layer and the first substrate, the second fluid being electro-conductive or polar, the first fluid provided between the driving circuit layer and the second fluid;

wherein part of the driving circuit layer corresponding to each pixel region comprises at least one transistor and a common line, and the at least one transistor and the common line are disposed in a same part of the pixel region adjacent to one of the short sides of the pixel region.

15 . The EWD device of claim 14 , wherein a distance from the common line to said one of the short sides of the pixel region is 0.2-0.5 times a length of each long side of the pixel region.

16 . The EWD device of claim 14 , wherein a portion of the common line extends toward said one of the short sides thereby forming a common electrode.

17 . The EWD device of claim 15 , wherein the at least one transistor comprises a transistor with a drain electrode overlapping the common electrode thereby forming a drain electrode pad, and the drain electrode pad and the common electrode cooperatively define a storage capacitor.

18 . The EWD device of claim 15 , wherein the driving circuit layer further comprises a plurality of first driving lines and a plurality of second driving lines that cross each other and correspond to the partition walls.

19 . The EWD device of claim 17 , wherein the at least one switch element comprises a first transistor and a second transistor, gate electrodes of the first and second transistors are connected to one corresponding first driving line, a source electrode of the first transistor is connected to one corresponding second driving line, a drain electrode of the first transistor is connected to a source electrode of the second transistor, and a drain electrode of the second transistor is connected to the pixel electrode and an electrode of the storage capacitor.