Patent ID: 7232702

Claim:
A method of fabricating an organic electroluminescent device, comprising: forming a driving gate electrode, a gate line, and a power line on a first substrate using a first mask process; forming a first insulating layer and a semiconductor layer sequentially on the driving gate electrode, the gate line, and the power line; forming a first layer of silicon and a second layer of metal sequentially on the semiconductor layer; patterning the first and second layers sequentially using a second mask process to form a driving ohmic contact layer, a data ohmic contact layer, driving source and drain electrodes, and a data line, the driving ohmic contact layer being formed under the driving source and drain electrodes, the data ohmic contact layer being formed under the data line; forming a second insulating layer having a source contact hole and a drain contact hole on the driving source and drain electrodes and the data line using a third mask process, the source contact hole exposing the driving source electrode, and the drain contact hole exposing the driving drain electrode; forming a connection pattern and a connection electrode of conductive polymeric material on the second insulating layer, the connection pattern being connected to the driving drain electrode through the drain contact hole, and the connection electrode being connected to the driving source electrode through the source contact hole; forming a first electrode on a second substrate; forming an organic electroluminescent layer on the first electrode; forming a second electrode on the organic electroluminescent layer; and attaching the first and second substrates such that the second electrode contacts the connection pattern.