Patent ID: 9123588
Filing Date: 2015-09-01
Classification: H01L

Abstract:
1. A display device comprising: an oxide semiconductor thin film including a first region, and a second region and a third region which are formed on both sides of the first region and have a lower resistance than the first region; a gate electrode opposed to the first region; a gate insulation film positioned between the oxide semiconductor thin film and the gate electrode; a first interlayer insulation film of silicon nitride, which covers the second region and the third region of the oxide semiconductor thin film and the gate electrode; a source electrode which is in contact with the second region; and a drain electrode which is in contact with the third region, wherein in the first interlayer insulation film covering the second region and the third region, an oxygen concentration of an end portion which is in contact with the oxide semiconductor thin film is higher than an oxygen concentration of a central portion which is located at a position corresponding to ½ of a thickness of the first interlayer insulation film.