Patent ID: 8217571

Claim:
An organic light emitting diode display device comprising: a first electrode on a first substrate including a first region and a second region, the second region substantially surrounding the first region; a pixel separating pattern on the first electrode in the second region; an organic light emitting pattern at least in the first region; a second electrode on the organic light emitting pattern; a contact electrode on the pixel separating pattern, the contact electrode and the second electrode are formed as a single body; a thin film transistor on the second substrate facing the first substrate, the thin film transistor being electrically connected to the contact electrode, wherein the thin film transistor includes a gate electrode, a gate insulating layer, a semiconductor layer and source and drain electrodes; a passivation layer on the second substrate, the passivation layer covering the thin film transistor; an overcoat layer on the passivation layer; a first contact member on the overcoat layer, the first contact member being electrically connected with the thin film transistor and contacting the contact electrode to electrically connect the thin film transistor with the second electrode; and a second contact member on the passivation layer, the second contact member being electrically connected to the drain electrode of the thin film transistor and the first contact member in a contact hole formed on the overcoat layer, wherein the drain electrode is disposed on a center area of the semiconductor layer overlapped with the gate electrode and the source electrodes are disposed on edge areas of the semiconductor layer across the drain electrode, wherein the contact hole is formed on the second contact member corresponding to the drain electrode, wherein the second contact member is connected with the first contact member in the contact hole, and wherein the contact electrode is directly contacted to the first contact member on the over coat layer.