Patent ID: 7642587

Claim:
A flat panel display device, comprising: a substrate including a first region on which an organic light emitting diode and a thin film transistor are formed and a second region on which a capacitor is formed; a semiconductor layer including source and drain regions on the first region; a first capacitor electrode formed on the second region; a gate insulating layer formed on the substrate; a gate electrode formed on the first region on the gate insulating layer; a second capacitor electrode formed on the second region; an interlayer insulating layer formed on the substrate; source and drain electrodes formed on the first region on the interlayer insulating layer and connected with the semiconductor layer through first and second contact holes; a first power voltage line formed on the second region connected with the second capacitor electrode through a third contact hole; and a third capacitor electrode formed on the second region connected with the first capacitor electrode through a fourth contact hole, and having a different area from the first capacitor electrode.