FIELD EFFECT TRANSISTOR AND DISPLAY APPARATUS

摘要

A field-effect transistor provided with at least a semiconductor layer and a gate electrode disposed over the above-described semiconductor layer with a gate insulating film therebetween, wherein the above-described semiconductor layer includes a first amorphous oxide semiconductor layer having at least one element selected from the group of Zn and In, and a second amorphous oxide semiconductor layer having at least one element selected from the group of Ge and Si and at least one element selected from the group of Zn and In. The composition of the above-described first amorphous oxide semiconductor layer is different from the composition of the above-described second amorphous oxide semiconductor layer.