Patent ID: 9379248
Filing Date: 2016-06-28
CPC Classification: G02F,H01L

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