Organic electroluminescent display and method of manufacturing the same
View Patent ↗An organic electroluminescent display and a method of manufacturing the same are provided. The organic electroluminescent display includes a substrate, at least a thin-film transistor, which is formed on the substrate, at least an insulation layer, which cover the thin-film transistor, first electrodes, which are formed in a predetermined pattern on a top surface of the insulation layer and to which a voltage is selectively applied through the thin-film transistor, bus electrodes, which are insulated from the first electrodes, a planarization layer, which is an insulation layer and has openings exposing the first electrodes and the bus electrodes, organic layers, which are formed on a top surface of the first electrodes, and second electrodes, which are formed on a top surface of the organic layer and a top surface of the planarization layer and are electrically connected to the bus electrodes.
1. An organic electroluminescent display comprising:
a substrate;
at least a thin-film transistor, which is formed on the substrate;
at least an insulation layer, which cover the thin-film transistor;
first electrodes, which are formed in a predetermined pattern on a top surface of the insulation layer and to which a voltage is selectively applied through the thin-film transistor;
bus electrodes, which are insulated from the first electrodes;
a planarization layer, which is an insulation layer and has openings exposing the first electrodes and the bus electrodes;
organic layers, which are formed on a top surface of the first electrodes; and
second electrodes, which are formed on a top surface of the organic layer and a top surface of the planarization layer and are electrically connected to the bus electrodes.
2. The organic electroluminescent display of claim 1 , wherein the second electrodes are made of a transparent material.
3. The organic electroluminescent display of claim 1 , wherein the first electrodes and the bus electrodes are made of the same material.
4. The organic electroluminescent display of claim 3 , wherein the first electrodes and the bus electrodes are made of metal.
5. The organic electroluminescent display of claim 1 , wherein the bus electrodes are formed on a top surface of the insulation layer.
6. The organic electroluminescent display of claim 1 , wherein light emitted from the organic layers is discharged in a direction of the second electrodes.
7. A method of manufacturing an organic electroluminescent display, the method comprising:
forming at least a thin-film transistor on a top surface of a substrate;
forming at least an insulation layer on a top surface of the thin-film transistor;
forming first electrodes, to which a potential is selectively applied through the thin-film transistor, and bus electrodes, which are electrically insulated from the first electrodes on a top surface of the insulation layer;
forming a planarization layer on a top surface of the insulation layer to have openings at positions corresponding to the first electrodes and the bus electrodes;
forming organic layers on a top surface of the first electrodes; and
forming second electrodes on a top surface of the planarization layer and a top surface of selected organic layers and are electrically connected to the bus electrodes.