Patent ID: 8415675

Claim:
An organic light emitting display device, comprising: a substrate; a thin film transistor disposed on the substrate and including a semiconductor layer, a gate insulating layer, a gate electrode, a source electrode, and a drain electrode; a planarization layer disposed on the substrate and on the source and drain electrodes, the planarization layer having a trench; a via hole disposed in the trench, the via hole exposing a part of the source electrode or the drain electrode through the planarization layer; a first electrode connected with the part of the source electrode or the drain electrode through the via hole and having opposite ends disposed in the trench; a pixel defining layer disposed on the first electrode, and comprising a first pixel defining layer contacting the first electrode and partially filling the trench, and a second pixel defining layer contacting the first electrode and partially filling the trench, and having an opening for exposing the first electrode, the pixel defining layer overlapping at least a portion of the trench; an organic layer disposed in the opening and including at least an emission layer; and a second electrode disposed on the substrate and on the organic layer.