Display device including a bead layer and fabricating method thereof
View Patent ↗A display device including a insulating substrate, an organic layer disposed on the insulating substrate, a common electrode disposed on the organic layer and a bead layer including a plurality of beads through which light from the organic layer passes. A method of fabricating a display device, the method including forming an organic film on a insulating substrate, forming a first transparent electrode layer on the organic film and forming a bead layer including a plurality of beads on the first transparent electrode layer.
1. A display device comprising
an insulating substrate;
an organic layer disposed on the insulating substrate;
a common electrode disposed on the organic layer; and
a bead layer comprising a plurality of beads through which light from the organic layer passes,
wherein the common electrode comprises a plurality of transparent electrode layers, and the bead layer is interposed between the transparent electrode layers of the common electrode.
2. The display device according to claim 1 , wherein the beads have a refractive index of about 1.5 to about 2.0.
3. The display device according to claim 2 , further comprising a passivation layer disposed on the common electrode and having a refractive index of about 1.3 to about 2.0.
4. The display device according to claim 2 , wherein the common electrode comprises a double layer and an upper layer of the double layer comprises indium tin oxide (“ITO”) or indium zinc oxide (“IZO”).
5. The display device according to claim 4 , wherein the upper layer has a thickness of about 0.03 micrometers (μm) to about 1.5 micrometers (μm).
6. The display device according to claim 1 , wherein the beads comprise one of polystyrene, polycarbonate, SiO 2 , TiO 2 and a combination comprising at least one of the foregoing.
7. The display device according to claim 1 , wherein the beads are hemispherical-shaped.
8. The display device according to claim 7 , wherein the beads have a diameter of about 2 micrometers (μm) to about 10 micrometers (μm).
9. The display device according to claim 7 , wherein the beads have a height of about 2 micrometers (μm) to about 6 micrometers (μm).
10. A method of fabricating a display device, the method comprising;
forming an organic film on a insulating substrate;
forming a first transparent electrode layer on the organic film;
forming a bead layer comprising a plurality of beads on the first transparent electrode layer, and
forming a second transparent electrode layer on the bead layer.
11. The method according to claim 10 , wherein the forming a bead layer comprises spraying the plurality of beads on the first transparent electrode layer.
12. The method according to claim 10 , wherein the forming a bead layer comprises screen printing.
13. The method according to claim 10 , further comprising:
forming a passivation film on the second transparent electrode layer.
14. A method of fabricating a display device, the method comprising:
forming an organic film on a insulating substrate;
forming a first transparent electrode layer and a second transparent electrode layer on the organic film; and
forming a bead layer comprising a plurality of beads on the second transparent electrode layer.
15. The method according to claim 14 , wherein the forming a bead layer comprises spraying the plurality of beads on the second transparent electrode layer.
16. The method according to claim 14 , wherein the forming a bead layer comprises screen printing.
17. The method according to claim 14 , further comprising:
forming a passivation film on the bead layer.