Organic electroluminescence device and method for fabricating thereof
View Patent ↗There are provided an organic EL device and a method of fabricating the same. An effective display area on which an anode electrode, an organic luminescence layer and a cathode electrode are formed is sealed by means of a metal can, a glass cap or an organic/inorganic material. A power source is applied to the anode and the cathode electrodes through a power transferring part extended from the effective display area to a non-effective display area. Accordingly, it is possible to reduce the oxidation of the cathode electrode of the organic EL device, thereby preventing the electrical contact characteristics of the cathode electrode from being deteriorated.
1. An organic electro luminescence device comprising:
a driving thin film transistor (TFT) including a gate electrode, a source electrode and a drain electrode;
a conductive layer formed from the same layer as the source and drain electrodes; and
an insulating layer formed on a substrate to cover the driving TFT and the conductive layer, and patterned to form first, second and third contact holes.
2. The organic electro luminescence device of claim 1 , wherein the first contact hole is formed on a portion of the drain electrode.
3. The organic electro luminescence device of claim 1 , wherein the second contact hole is formed on an effective display area of the conductive layer.
4. The organic electro luminescence device of claim 1 , wherein the third contact hole is formed on a non-effective display area of the conductive layer.
5. The organic electro luminescence device of claim 1 , wherein an anode electrode is formed via depositing a thin film on the insulating layer, to be connected with the drain electrode.
6. The organic electro luminescence device of claim 5 , wherein the thin film includes an indium tin oxide (ITO) or an indium zinc oxide (IZO).
7. The organic electro luminescence device of claim 5 , wherein an organic luminescence layer is partially formed on the anode electrode.
8. The organic electrode luminescence device of claim 7 , wherein the organic luminescence layer includes one of a red organic luminescence to emit a light having a red wavelength, a green organic luminescence to emit a light having a green wavelength, and a blue organic luminescence to emit a light having a blue wavelength.
9. The organic electrode luminescence device of claim 7 , wherein a cathode electrode is formed on an upper surface of the substrate under the effective display area to cover the organic luminescence layer.
10. The organic electrode luminescence device of claim 9 , wherein the cathode electrode is connected with the organic luminescence layer and connected with the second contact hole at the same time.
11. The organic electrode luminescence device of claim 10 , wherein a sealing cap is formed to seal the effective display area via a sealant.