Organic light emitting display and method of fabricating the same

A subpixel structure for a display device, the subpixel structure comprising:

• a light emitting diode formed on a substrate;
• a first switching transistor including a first gate electrode connected to a first scan line, a first source electrode connected to a data line, a first drain electrode, and a first active layer forming a first channel part between the first source electrode and the first drain electrode;
• a driving transistor including a second gate electrode, a second source electrode, a second drain electrode, and a second active layer forming a second channel part between the second source electrode and the second drain electrode, wherein the driving transistor is connected to the first switching transistor and the light emitting diode;
• a second switching transistor including a third gate electrode connected to a second scan line, a third source electrode, the second a third drain electrode, and a third active layer forming a third channel part between the third source electrode and the second drain electrode;
• and
• a storage capacitor connected to the first switching transistor and the driving transistor,
• wherein at least one of the first, second and third gate electrodes is disposed between the corresponding first, second and third active layers and the substrate,
• wherein the second gate electrode forms at least a portion of a top electrode of the storage capacitor, and
• wherein the second gate electrode is disposed between the second active layer and the substrate.