Patent ID: 9647126
Date: 2017-05-09
CPC Classifications: C23C,H01J,H01L

Claim:
1. An oxide semiconductor configured to be used as a semiconductor layer in a thin film transistor comprising; a substrate, a gate electrode on the substrate, a gate insulating film on the gate electrode, a semiconductor layer on the gate insulting film, a source electrode contacting the semiconductor layer and the gate insulating film, a drain electrode contacting the semiconductor layer and the gate insulating film, and a passivation film formed thereon, wherein the oxide comprises In, Zn, Ga, Sn, and O; and satisfies requirements (1), (2), (3), and (4): wherein [In], [Zn], [Ga], and [Sn] represent, in atomic %, the content of each of the elements relative to the total content of all the metal elements other than oxygen in the oxide.