Organic electroluminescent display device and fabricating method thereof

1. An electroluminescent display device, comprising:

a shielding pattern on a substrate;

a thin film transistor including a semiconductor layer that is disposed on the shielding pattern and that has an active portion and source and drain ohmic contact portions, wherein the thin film transistor further includes a gate electrode corresponding to the active portion, and source and drain electrodes connected to the source and drain ohmic contact portions, respectively;

an organic electroluminescent diode connected to the thin film transistor;

a power line connected to the thin film transistor and the shielding pattern;

a buffer layer between the shielding pattern and the semiconductor layer;

a gate insulating layer between the semiconductor layer and the gate electrode; and

an interlayer insulating film between the gate electrode and the source and drain electrodes, wherein the buffer layer, the gate insulating layer and the interlayer insulating layer has a contact hole through which the power line contacts the shielding pattern, and

wherein the shielding pattern covers the active portion.

2. The device according to claim 1 , wherein the shielding pattern completely covers the active portion.

3. The device according to claim 1 , wherein the organic electroluminescent diode includes a first electrode connected to the thin film transistor, an organic emitting layer on the first electrode, a second electrode on the organic emitting layer.

4. The device according to claim 3 , wherein the first electrode is transparent, and the second electrode is opaque.

5. The device according to claim 1 , wherein the second electrode covers the active portion.

6. The device according to claim 1 , wherein the organic electroluminescent diode emits light toward the substrate.