Patent ID: 8039835
Filing Date: 2011-10-18
Classification: G02F,H01L

Abstract:
1. A semiconductor device, comprising: a substrate; a transparent oxide layer disposed on one surface side of the substrate, the transparent oxide layer including a source, a drain, and a channel formed integrally between the source and the drain, and being made of a transparent oxide material as a main material, wherein the source, the drain and the channel regions of the transparent oxide layer have substantially a same material composition and dopant density; a gate disposed apart from the transparent oxide layer, the gate providing an electric field to the channel; and a gate insulating layer disposed between the transparent oxide layer and the gate, the gate insulating layer insulating the source and the drain from the gate, wherein an average thickness of the channel is smaller than an average thickness of the source and the drain so that the source and the drain function as a conductor and the channel functions as a semiconductor; and wherein the channel has a first surface facing the substrate and a second surface opposing the first surface, and the second surface is curved and concave, the first surface that faces the substrate is disposed directly on the gate insulating layer.