Electroluminescent display device having surface treated organic layer and method of fabricating the same
View Patent ↗An organic electroluminescent display device includes a substrate, a first electrode formed on the substrate, an organic layer formed on the first electrode, and a second electrode formed on the organic layer. The organic layer includes an organic emission layer and an organic material layer, and the organic material layer has a surface with a roughness in a range of Rms 11 Å to 50 Å.
1. An organic electroluminescent (EL) display device, comprising:
a substrate;
a first electrode formed on the substrate;
an organic layer formed on the first electrode; and
a second electrode formed on the organic layer,
wherein the organic layer comprises a first layer and a second layer, the second layer comprising two polymer layers;
wherein each polymer layer has a treated surface with a roughness in a range of Root mean square (Rms) 11 Å to 50 Å, and the treated surfaces of the two polymer layers contact each other.
2. The organic EL display device of claim 1 , wherein the first layer is an organic emission layer.
3. The organic EL display device of claim 1 , wherein one of the two polymer layers is a hole injection layer, a hole transport layer, a hole blocking layer, an electron transport layer or an electron injection layer.
4. The organic EL display device of claim 1 , wherein the two polymer layers are a hole injection layer and a hole transport layer.
5. The organic EL display device of claim 3 , wherein the first electrode is an anode and the second electrode is a cathode.
6. The organic EL display device of claim 1 , wherein the first electrode is a cathode and the second electrode is an anode.
7. The organic EL display device of claim 1 , further comprising a thin film transistor.
8. The organic EL display device of claim 1 , wherein an upper layer of the two polymer layers is formed by a laser induced thermal imaging (LITI) method.