Making organic thin film transistor array panels

1. An organic thin film transistor (OTFT) array panel, comprising:

a gate line and a pixel electrode formed on a substrate, the gate line and pixel electrode each including a first conductive layer comprising a transparent conductive oxide and a second conductive layer comprising a metal;

a data line crossing the gate line and comprising a source electrode;

a drain electrode facing the source electrode and connected with the pixel electrode;

an interlayer insulating layer positioned between the gate line and the data line, the interlayer insulating layer comprising a first opening; and,

an organic semiconductor disposed in contact with the source electrode and the drain electrode, the organic semiconductor disposed within the first opening,

wherein the first opening comprises a lower opening and an upper opening that is larger than the lower opening, and wherein a gate insulator and the organic semiconductor are respectively formed in the lower and upper openings.

2. The OTFT array panel of claim 1 , wherein the pixel electrode comprises a first part having the first and second conductive layers, and a second part that does not have the second conductive layer.

3. The OTFT array panel of claim 1 , wherein the data line comprises a third conductive layer comprising a transparent conductive oxide and a fourth conductive layer comprising a metal.

4. The OTFT array panel of claim 3 , wherein the third conductive layer comprises the source electrode, and the source electrode and the drain electrode comprise the same material.

5. The OTFT array panel of claim 4 , wherein the transparent conductive oxide comprises ITO or IZO.

6. The OTFT array panel of claim 5 , wherein the metal comprises molybdenum (Mo), chromium (Cr), aluminum (Al), copper (Cu), or silver (Ag).

7. The OTFT array panel of claim 6 , wherein the first opening exposes a portion of the gate line and the interlayer insulating layer comprises a second opening that exposes a portion of the pixel electrode.

8. The OTFT array panel of claim 1 , further comprising a storage electrode line overlapping the pixel electrode.

9. The OTFT array panel of claim 1 , further comprising a protection member covering the organic semiconductor.

10. The OTFT array panel of claim 1 , wherein a side surface of the second conductive layer and a side surface of the drain electrode are disposed at the substantially same plane.