Patent ID: 9093542
Filing Date: 2015-07-28
Classification: G02F,H01L

Abstract:
1. A thin-film transistor structure comprising a substrate, an oxide semiconductor layer, a source-drain electrode, and a passivation layer in that order from the substrate, wherein the oxide semiconductor layer is a stacked product of a first oxide semiconductor layer and a second oxide semiconductor layer; the first oxide semiconductor layer has a Zn content of 50 atomic % or more as a percentage of all metal elements contained therein, and the first oxide semiconductor layer is formed on, and is in direct contact with, both the source-drain electrode and the passivation layer; the second oxide semiconductor layer comprises Sn and at least one element selected from the group consisting of In, Ga, and Zn, and the second oxide semiconductor layer is formed on the substrate; wherein the second oxide semiconductor layer comprises Sn, Zn and at least one element selected from the group consisting of In and Ga.