Circuit board and display device provided with same

Abstract

A circuit board includes the following: a base coat film provided on a substrate layer; a first semiconductor layer provided on the base coat film; a stacked insulating film provided so as to cover the first semiconductor layer; and a second semiconductor layer provided on the stacked insulating film and containing an oxide semiconductor. The stacked insulating film includes a contact hole penetrating to the first semiconductor layer. The second semiconductor layer is electrically connected to the first semiconductor layer via the contact hole. The circuit board further includes an island-shaped intervening layer interposed between the substrate layer and the first semiconductor layer in a region corresponding to the contact hole.

Dependencies are inferred from the claim text.