Patent ID: 8164096

Claim:
A flat panel display device, comprising: a thin film transistor disposed on a substrate, the thin film transistor comprising: a semiconductor layer formed in a super grain silicon (SGS) crystallization growth region of a crystalline silicon layer disposed on the substrate and having source and drain regions and a channel region, a gate electrode formed to correspond to a partial region of the semiconductor layer, a gate insulating layer to insulate the semiconductor layer from the gate electrode, and source and drain electrodes electrically connected to the source and drain regions of the semiconductor layer; a capacitor comprising: a first capacitor electrode spaced apart from the thin film transistor on the substrate and formed in an SGS crystallization seed region of the crystalline silicon layer disposed on the substrate, a second capacitor electrode formed on the gate insulating layer, and the gate insulating layer to insulate the first capacitor electrode from the second capacitor electrode; and a first electrode of a display electrically connected to one of the source or drain electrodes of the thin film transistor, wherein a grain boundary of the growth region is not disposed in the semiconductor layer.