Patent ID: 8072080

Claim:
A connection structure comprising: a substrate; a first insulation film located over the substrate; a first electro-conductive film located directly over the substrate first insulation film; a second insulation film located over the first electro-conductive film, an end surface of the second insulation film facing in a direction in which an end surface of the first electro-conductive film faces; a second electro-conductive film that extends from the upper surface of the second insulation film to reach the end surface of the first electro-conductive film across the end surface of the second insulation film, the second electro-conductive film being electrically connected to the first electro-conductive film only via the end surface of the first electro-conductive film, a third insulation film located over the second electro-conductive film; and a third electro-conductive film connected to the second electro-conductive film at the region where the second electro-conductive film is connected to the upper surface of the second insulation film.