Electrowetting display device
An electrowetting display device includes a black matrix that includes a plurality of openings corresponding to pixels, respectively, a first extension portion extending in a driving direction of an electrowetting layer, the driving direction being a direction in which motion of the electrowetting layer is induced when a voltage difference is applied between a common electrode and a pixel electrode, and a partition wall that partitions the pixels. The first extension portion includes first and second areas respectively extending in opposite directions to each other and a third area having a width substantially the same as a width of the partition wall. The first area has a width less than about half of a first length corresponding to a length extending between both sides of each pixel in the driving direction, and the second area has a width less than the width of the first area.
1. An electrowetting display device comprising:
a first substrate including a plurality of pixels;
a second substrate opposite the first substrate;
a first fluid and a second fluid disposed between the first substrate and the second substrate, the first fluid being immiscible with the second fluid;
at least one electrode for applying a voltage between the first substrate and the second substrate;
a light-absorbing layer arranged on at least one of (i) the first substrate or (ii) the second substrate, the light absorbing layer including a plurality of openings disposed within the plurality of pixels; and
a reflecting layer disposed at least partially over the at least one electrode or at least partially under the first substrate.
2. The electrowetting display device of claim 1 , further comprising:
pixel walls arranged to substantially overlap the light-absorbing layer, wherein the pixel walls define the plurality of pixels.
3. The electrowetting display device of claim 1 , wherein the reflecting layer comprises metal.
4. The electrowetting display device of claim 1 , wherein the light absorbing layer and the openings are arranged such that the plurality of pixels display a gray-scale upon application of the voltage between the first substrate and the second substrate.
5. The electrowetting display device of claim 1 , wherein:
the at least one electrode comprises a pixel electrode and a common electrode; and
the pixel electrode is configured to receive a gray-scale voltage and the common electrode is configured to receive a common voltage to apply the voltage between the first substrate and the second substrate such that the plurality of pixels display a gray-scale.
6. The electrowetting display device of claim 1 , wherein the first fluid is a non-polar fluid and the electrode includes an opening over which the non-polar fluid converges in the pixels upon application of the voltage between the first substrate and the second substrate.
7. The electrowetting display device of claim 1 , wherein the first fluid is a non-polar fluid and the non-polar fluid contracts over the light-absorbing layer upon application of the voltage.
8. The electrowetting display device of claim 1 , wherein the light absorbing layer is disposed on the second substrate.
9. The electrowetting display device of claim 1 , wherein the light absorbing layer is disposed on the first substrate.
10. An electrowetting display device comprising:
a first substrate including a plurality of pixels;
a second substrate opposite the first substrate;
a non-polar fluid and a polar fluid disposed between the first substrate and the second substrate within the plurality of pixels, the first fluid being immiscible with the second fluid;
a pixel electrode and a common electrode for applying a voltage between the first substrate and the second substrate;
a light-absorbing layer arranged on at least one of (i) the first substrate or (ii) the second substrate, the light absorbing layer including a plurality of openings disposed within the plurality of pixels; and
a reflecting layer disposed at least partially over the pixel electrode or at least partially under the first substrate.
11. The electrowetting display device of claim 10 , further comprising:
pixel walls arranged to substantially overlap the light-absorbing layer, wherein the pixel walls define the plurality of pixels.
12. The electrowetting display device of claim 10 , wherein the light absorbing layer and the openings are arranged such that the plurality of pixels display a gray-scale upon application of the voltage between the first substrate and the second substrate.
13. The electrowetting display device of claim 10 , wherein the pixel electrode is configured to receive a gray-scale voltage and the common electrode is configured to receive a common voltage to apply the voltage between the first substrate and the second substrate such that the plurality of pixels display a gray-scale.
14. The electrowetting display device of claim 10 , wherein the pixel electrode includes an opening over which the non-polar fluid converges in the pixels upon application of the voltage between the first substrate and the second substrate.
15. The electrowetting display device of claim 10 , wherein the non-polar fluid contracts over the light-absorbing layer upon application of the voltage.
16. The electrowetting display device of claim 10 , wherein the reflecting layer comprises metal.
17. An electrowetting display device comprising:
a first substrate including a plurality of pixels;
a second substrate opposite the first substrate;
a first fluid and a second fluid disposed between the first substrate and the second substrate, the first fluid being immiscible with the second fluid;
at least one electrode for applying a voltage between the first substrate and the second substrate; and
a light-absorbing layer arranged on the second substrate, the light absorbing layer including a plurality of openings disposed within the plurality of pixels, wherein the light absorbing layer and the openings are arranged such that the plurality of pixels display a gray-scale upon application of the voltage between the first substrate and the second substrate.
18. The electrowetting display device of claim 17 , further comprising:
pixel walls arranged to substantially overlap the light-absorbing layer, wherein the pixel walls at least partially define the plurality of pixels.
19. The electrowetting display device of claim 17 , wherein the first fluid is a non-polar fluid and the non-polar fluid contracts over the light-absorbing layer upon application of the voltage.