Patent ID: 7973315
Filing Date: 2011-07-05
Classification: H01L

Abstract:
1. A thin film transistor, comprising: a substrate; a patterned buffer layer provided on the substrate, the patterned buffer layer being formed of an insulating material; a patterned active layer provided on the patterned buffer layer; a gate electrode provided on and insulated from the patterned active layer by a patterned first insulating film, the patterned first insulating film being patterned in the same pattern as the patterned active layer such that outer ends of the patterned first insulating film coincide with outer ends of the patterned active layer; and a source electrode and a drain electrode that contact the patterned active layer and are insulated from the gate electrode, wherein the patterned active layer is patterned in substantially the same pattern as the patterned buffer layer and is interposed between the patterned buffer layer and the gate electrode, wherein sidewalls of the patterned buffer layer, the patterned active layer, and the patterned first insulating film are sloped, and wherein the outer ends of the patterned active layer coincide with outer ends of the patterned buffer layer.