Display device with tapered light reflecting layer and manufacturing method for same

1. A display device comprising:

a substrate having an upper surface;

a light reflecting layer to reflect light, formed over the upper surface of the substrate, the light reflecting layer having an upper surface; and

a light absorbing layer to absorb light, formed over the upper surface of the light reflecting layer,

wherein a plurality of apertures are defined through the light reflecting layer and the light absorbing layer such that, at an edge of each of the plurality of apertures, the light absorbing layer at least partially overhangs the light reflecting layer, and

wherein, at the plurality of apertures, the light reflecting layer has a tapered profile, and in which the tapered profile of the reflective layer narrows towards the substrate in a direction towards the middle of the aperture.

2. The display device of claim 1 , wherein the substrate includes at least one of a glass and a plastic.

3. The display device of claim 1 , wherein the substrate is a first substrate and further comprising a second substrate disposed over the first substrate, and further wherein a space exists between the second substrate and the light absorbing layer.

4. The display device of claim 3 , wherein the space is filled with a fluid.

5. The display device of claim 4 , wherein the fluid includes at least one of a silicon oil, ethanol fluorinated silicon and a lubricant.

6. A display device comprising:

a first substrate defining a plurality of apertures to allow light to pass through each of the plurality of apertures, the first substrate having an upper surface and a lower surface;

a second substrate coupled to the first substrate; and

a backlight for irradiating light through the lower surface of the first substrate, wherein the first substrate includes:

a light reflecting layer to reflect light, formed over the upper surface of the first substrate, the light reflecting layer having an upper surface; wherein, at each of the plurality of apertures, the light reflecting layer has a tapered profile, and in which the tapered profile of the reflective layer narrows towards the substrate in a direction towards the middle of the aperture; and

a light absorbing layer to absorb light, formed over the upper surface of the light reflecting layer, and further wherein, at each of the plurality of apertures, the light absorbing layer at least partially overhangs the light reflecting layer and a space exists between the second substrate and the light absorbing layer.

7. The display device of claim 6 , wherein the second substrate includes a mechanical modulator formed for each pixel in a plurality of pixels.

8. The display device of claim 6 , wherein the light absorbing layer includes at least one of a mixture of a light absorbing material suspended in a resin, a photoresist and a black-colored material.

9. The display device of claim 6 , wherein the space is filled with a fluid.

10. The display device of claim 9 , wherein the fluid includes at least one of a silicon oil, ethanol fluorinated silicon and a lubricant.

11. A method comprising:

forming a light reflecting layer over a transparent substrate, the light reflecting layer having an upper surface;

forming a light absorbing layer over the upper surface of the light reflecting layer; and

removing portions of the light reflecting layer and the light absorbing layer to define apertures such that the light absorbing layer at least partially overhangs the light reflecting layer at each of the apertures, and such that at each of the apertures the light reflecting layer has a tapered profile, and in which the tapered profile of the reflective layer narrows towards the substrate in a direction towards the middle of the aperture.

12. The method of claim 11 , wherein removing portions of the light reflecting layer and the light absorbing layer includes removing portions of the light reflecting layer using wet etching.

13. The method of claim 11 , wherein removing portions of the light reflecting layer and the light absorbing layer includes etching the light absorbing layer and, after etching the light absorbing layer, etching the light reflecting layer using the etched light absorbing layer as an etch mask.

14. The method of claim 11 , wherein portions of the light absorbing layer are removed prior to removing portions of the light reflecting layer.

15. The method of claim 11 , wherein the transparent substrate includes at least one of a glass and a plastic.

16. The method of claim 11 , wherein the light absorbing layer includes at least one of a mixture of a light absorbing material suspended in a resin, a photoresist and a black-colored material.