SEMICONDUCTOR DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a thin film transistor and a manufacturing method thereof capable of enhancing reliability of electric characteristics and the thin film transistor, and to provide a display device and a manufacturing method thereof capable of improving image quality.SOLUTION: A thin film transistor comprises: a gate electrode; a gate insulating layer formed on the gate electrode; wiring formed on the gate insulating layer; an oxide semiconductor layer overlapping the gate electrode and formed on the gate insulating layer and the wiring; and an organic insulating layer brought into contact with the oxide semiconductor layer.