Patent ID: 8076837

Claim:
An organic light emitting display device (OLED), comprising: a substrate; a thin film transistor disposed on the substrate and including a source electrode and a drain electrode; a first insulating layer disposed on the substrate and the source and drain electrodes; a second insulating layer disposed on the first insulating layer and including a trench formed by reducing the thickness of a portion of the second insulating layer; a via hole formed in the bottom of the trench, through the first and second insulating layers, exposing the source electrode or the drain electrode; a first electrode disposed in the trench and connected to one of the source electrode and the drain electrode, through the via hole; a pixel defining layer disposed on the first electrode and having an opening exposing a portion of the first electrode; an organic electroluminescent layer disposed in the opening; and a second electrode disposed on an entire surface of the substrate having the organic layer, wherein, the opening has a first side wall and an opposing second side wall, the thin film transistor is disposed at the first side wall of the opening, and the trench extends continuously from the thin film transistor to the second side wall of the opening.