Organic electro-luminescence display device and fabricating method thereof
View Patent ↗An organic EL display device that is adaptive for improving luminous brightness and reducing power consumption, and a fabricating method thereof are disclosed. An organic EL display device according to the present invention includes a plurality of anode electrodes; and a conductive light shielding film which has conductivity and is formed on the anode electrode in a separate pattern so that the anode electrodes are insulated from one another.
1. An organic electro luminescence display device, comprising:
a substrate;
a plurality of anode electrodes formed on the substrate;
a plurality of conductive light shielding films, each conductive light shielding film being formed on both sides and a portion of upper surface of the anode electrode in a separate pattern so that the anode electrodes are insulated from one another, wherein the conductive light shielding film is formed to directly cover both sides and a portion of upper surface of the anode electrode, and the conductive light shielding film has a first hollow part that partially exposes the anode electrode;
an insulating layer formed on an upper surface of the conductive light shielding film and a portion of the substrate exposed between the conductive light shielding films, wherein the insulating layer has a second hollow part that exposes a portion of the anode electrode exposed by the first hollow part; and
an organic light emitting layer formed on the anode electrode exposed by the first and second hollow parts,
wherein a width of the first hollow part is same as a width of the second hollow part, and the organic emitting layer is formed within the first and the second hollow parts formed by the conductive light shielding films and the insulating layer.
2. The organic electro luminescence display device according to claim 1 , wherein the conductive light shielding film partially exposes the anode electrode to define a light emitting area.
3. The organic electro luminescence display device according to claim 1 , further comprising:
a barrier rib formed to cross the anode electrode; and
a cathode electrode formed to cross the anode electrode with the organic light emitting layer therebetween.
4. The organic electro luminescence display device according to claim 1 , wherein the conductive light shielding film includes an opaque material.
5. The organic electro luminescence display device according to claim 4 , wherein the opaque material is one or more metals selected from the group consisting of Cr, Mo, Al, Ni, Cu, Ag, Au, In, Sn, and Zn.
6. The organic electro luminescence display device according to claim 1 , wherein the resistivity of the conductive light shielding film is about 20˜200 μΩ·cm.
7. The organic electro luminescence display device according to claim 1 , wherein the hollow part is square.
8. A fabricating method of an organic electro luminescence display device, comprising the steps of:
forming a plurality of anode electrodes on a substrate;
forming a plurality of conductive light shielding films, each conductive light shielding film being formed on both sides and a portion of upper surface of the anode electrode in a separate pattern so that the anode electrodes are insulated from one another, wherein the conductive light shielding film is formed to directly cover both sides and a portion of upper surface of the anode electrode, and the conductive light shielding film has a hollow part that partially exposes the anode electrode;
forming an insulating layer on an upper surface of the conductive light shielding film and a portion of the substrate exposed between the conductive light shielding films, wherein the insulating layer has a second hollow part that exposes a portion of the anode electrode exposed by the first hollow part; and
forming an organic light emitting layer on the anode electrode exposed by the first and second hollow parts,
wherein a width of the first hollow part is same as a width of the second hollow part, and the organic emitting layer is formed within the first and the second hollow parts layer is formed within the first and the second hollow parts without a gap between the organic light emitting layer and the conductive light shielding films and the insulating layer.
9. The fabricating method according to claim 8 , wherein the conductive light shielding film partially exposes the anode electrode to define a light emitting area.
10. The fabricating method according to claim 8 , further comprising:
forming a barrier rib to cross the anode electrode; and
forming a cathode electrode to cross the anode electrode with the organic light emitting layer therebetween.
11. The fabricating method according to claim 8 , wherein the conductive light shielding film includes an opaque material.
12. The fabricating method according to claim 11 , wherein the opaque material is one or more metals selected from the group consisting of Cr, Mo, Al, Ni, Cu, Ag, Au, In, Sn, and Zn.
13. The fabricating method according to claim 8 , wherein each of the first and second hollow part is square.