Semiconductor device having oxide semiconductor layer and manufacturing method therof

摘要

The invention provides an active matrix EL display device comprising a thin film transistor formed over a substrate, the thin film transistor including a gate electrode over the substrate; an insulating film over the gate electrode; and an oxide semiconductor film over the gate electrode with the insulating film interposed there between; and a light emitting element electrically connected to the thin film transistor, the light emitting element including a first electrode electrically connected to the thin film transistor; a light emitting layer comprising an organic light emitting material formed over the first electrode; and a second electrode formed over the light emitting layer, wherein the oxide semiconductor film comprises an In-Ga-Zn-O based amorphous oxide semiconductor.