Patent ID: 8071978
Filing Date: 2011-12-06
Classification: H01L

Abstract:
1. An organic electroluminescent device, comprising: first and second substrates spaced apart from and facing each other; an organic electroluminescent diode on an inner surface of the second substrate; a gate line formed on an inner surface of the first substrate in a first direction; a data line formed in a second direction crossing the first direction; a power supply line spaced apart from the data line and formed in the second direction, the power supply line made of the same material and on the same layer as the gate line, the power supply line having a power supply link line near a crossing portion of the gate line and the power supply line; a switching thin film transistor at a crossing portion of the gate and data lines, the switching thin film transistor including a first gate formed on the first substrate with a first semiconductor layer made of amorphous silicon formed over the first gate and electrically insulated from the first gate; a driving thin film transistor at a crossing portion of the switching thin film transistor and the power supply line, the driving thin film transistor including a second gate formed on the first substrate with a second semiconductor layer made of amorphous silicon formed over the second gate and electrically insulated from the second gate; a connecting electrode connected to the driving thin film transistor and made of the same material as the data line, the connecting electrode extending from a drain electrode of the driving thin film transistor; and an electrical connecting pattern corresponding to the connecting electrode and for electrically connecting the connecting electrode to the organic electroluminescent diode, wherein the electrical connecting pattern is disposed directly on and contacts the first substrate, and top and side surfaces of the electrical connecting pattern directly contact the connecting electrode and are completely covered by the connecting electrode, wherein the switching thin film transistor and the driving thin film transistor further include first and second gate insulating layers, respectively, the first gate insulating layer having the same shape as the first semiconductor layer, the second gate insulating layer having the same shape as the second semiconductor layer.