Electrowetting device

1. An electrowetting device comprising:

a lower substrate and an upper substrate which face each other;

a first electrode on the lower substrate;

an insulating layer on the first electrode;

a second electrode on the upper substrate; and

a first fluid and a second fluid between the upper substrate and the lower substrate,

wherein the first fluid includes a solvent, a dye and a scattering enhancer.

2. The electrowetting device of claim 1 , wherein

the second fluid has polarity.

3. The electrowetting device of claim 1 , wherein

the first fluid includes a colored oil.

4. The electrowetting device of claim 1 , wherein

a particle size of the scattering enhancer is in a range which is half of a visible ray wavelength band.

5. The electrowetting device of claim 4 , wherein

the particle size of the scattering enhancer is about 150 nanometers to about 400 nanometers.

6. The electrowetting device of claim 5 , wherein

a distribution of the particle size of the scattering enhancer in a range of about 150 nanometers to about 400 nanometers, is uniform.

7. The electrowetting device of claim 1 , wherein

a surface tension of the scattering enhancer is in a range of about 17 dynes per centimeter to about 35 dynes per centimeter.

8. The electrowetting device of claim 7 , wherein

the first fluid includes a colored oil including the solvent and the dye, and

the solvent of the colored oil and the scattering enhancer have a same surface tension.

9. The electrowetting device of claim 8 , wherein

the solvent of the colored oil and the scattering enhancer have the same density.

10. The electrowetting device of claim 1 , wherein

the scattering enhancer includes an organic material.

11. The electrowetting device of claim 10 , wherein

the scattering enhancer includes at least one of silicon rubber, fluorinated silicon rubber, polyethylene, polypropylene, polystyrene and a combination thereof.

12. The electrowetting device of claim 1 , wherein

the first fluid including the scattering enhancer, excludes a dispersion medium.

13. The electrowetting device of claim 1 , wherein

a distribution of the scattering enhancer within the first fluid is uniform.

14. The electrowetting device of claim 1 , wherein

the first fluid includes a colored oil including the solvent and the dye, and

the solvent of the colored oil includes an alkane material.

15. The electrowetting device of claim 1 , wherein

the first fluid includes a colored oil including the solvent and the dye, and

the dye of the colored oil includes at least one of an anthraquinone-based dye, an azo-based dye, a diazo-based dye and a combination thereof.

16. An electrowetting device comprising:

a first electrode on a lower substrate;

a second electrode on an upper substrate;

a hydrophobic first liquid, and a second liquid, between the first electrode and the second electrode; and

a hydrophobic insulating layer between the hydrophobic first liquid and the lower substrate;

wherein the hydrophobic first liquid includes a solvent, a colored dye and a scattering enhancer.

17. The electrowetting device of claim 16 , wherein the colored dye blocks transmission of light.

18. The electrowetting device of claim 16 , wherein

a particle size of the scattering enhancer is about 150 nanometers to about 400 nanometers, and

a distribution of the particles size in a range of about 150 nanometers to about 400 nanometers is uniform.

19. The electrowetting device of claim 16 , wherein the solvent and the scattering enhancer of the hydrophobic first liquid have a same surface tension.

20. The electrowetting device of claim 16 , wherein

the scattering enhancer includes at least one of silicon rubber, fluorinated silicon rubber, polyethylene, polypropylene, and polystyrene and a combination thereof.