Mirror display and method of manufacturing the same
A mirror display includes a light source, a light guide plate configured to guide light emitted from the light source, a first electrode layer spaced apart from the light guide plate and including at least one first hole, a first spacer provided between the light guide plate and the first electrode layer, a second electrode layer spaced apart from the first electrode layer and including at least one second hole not facing the first hole, and a substrate provided on the second electrode layer.
1. A mirror display comprising:
a light source;
a light guide plate configured to guide light emitted from the light source;
a first electrode layer spaced apart from the light guide plate and comprising at least one first hole;
a first spacer provided between the light guide plate and the first electrode layer;
a second electrode layer spaced apart from the first electrode layer and comprising at least one second hole not facing the first hole; and
a substrate provided on the second electrode layer.
2. The mirror display of claim 1 , wherein in response to applying a voltage between the first electrode layer and the second electrode layer, the first electrode layer is moved toward the second electrode layer.
3. The mirror display of claim 2 , wherein in response to applying a voltage between the first electrode layer and the second electrode layer, the second electrode layer is not moved.
4. The mirror display of claim 1 , wherein in response to applying a voltage between the first electrode layer and the second electrode layer, the first electrode layer closes the second hole.
5. The mirror display of claim 1 , wherein the substrate comprises a transparent material.
6. The mirror display of claim 5 , wherein the substrate comprises a glass substrate.
7. The mirror display of claim 1 , further comprising an insulation layer provided on the second electrode layer.
8. The mirror display of claim 1 , further comprising an optical film covering the at least one second hole.
9. The mirror display of claim 8 , wherein the optical film comprises a diffusing plate or a polarizing plate to guide light in an upward direction.
10. The mirror display of claim 1 , wherein the light source comprises a plurality of light sources configured to emit light having different wavelengths.
11. The mirror display of claim 10 , wherein the plurality of light sources are turned on and off in a time sequence so as to display color images.
12. The mirror display of claim 1 , further comprising an image signal inputter configured to control light transmission by varying a time period during which a voltage is applied between the first electrode layer and the second electrode layer.
13. The mirror display of claim 1 , wherein the substrate is provided on a side of the second electrode layer through which light passing through the second hole is output.
14. The mirror display of claim 1 , wherein the second electrode layer has a reflectivity of 70% or greater.
15. The mirror display of claim 1 , wherein the second electrode layer reflects external light incident on the mirror display.
16. The mirror display of claim 1 , further comprising a gap formed between the light guide plate and the first electrode layer.
17. The mirror display of claim 1 , further comprising a second spacer provided between the first electrode layer and the second electrode layer.
18. The mirror display of claim 1 , wherein the first electrode layer comprises pixel electrodes, and the second electrode layer comprises a common electrode.
19. A method of manufacturing a mirror display, the method comprising:
preparing a light guide plate;
providing a first electrode layer on a substrate;
etching the first electrode layer to form at least one first hole in the first electrode layer;
providing a second electrode layer spaced apart from the first electrode layer;
etching the second electrode layer to form at least one second hole in the second electrode layer;
providing the second electrode layer to face the light guide plate; and
coupling the second electrode layer to the light guide plate using a first spacer.
20. The method of claim 19 , further comprising:
providing a first layer on the first electrode layer;
etching the first layer to form a hole;
forming a second spacer by filling the hole with a spacer material;
providing the second electrode layer on the first layer; and
removing the first layer.
21. The method of claim 19 , wherein the etching the second electrode layer comprises etching the second electrode layer such that the second hole does not face the first hole.
22. The method of claim 19 , wherein the first electrode layer has a reflectivity of 70% or greater.