Patent ID: 9362417
Filing Date: 2016-06-07
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a gate electrode layer having an opening portion; a gate insulating film over the gate electrode layer; an oxide semiconductor film over the gate insulating film, the oxide semiconductor film comprising a lower face facing the gate insulating film and one or more outermost side faces; a drain electrode layer over the oxide semiconductor film, the drain electrode layer overlapping with an inner edge portion of the gate electrode layer; and a source electrode layer covering a first part of the one or more outermost side faces of the oxide semiconductor film, wherein an outer edge portion of the drain electrode layer is positioned on an inner side than an outer edge portion of the gate electrode layer, wherein the gate electrode layer does not overlap with the first part of the one or more outermost side faces of the oxide semiconductor film, wherein the gate electrode layer overlaps with a second part of the one or more outermost side faces of the oxide semiconductor film, and wherein the source electrode layer does not cover the second part of the one or more outermost side faces of the oxide semiconductor film.