Display device

A display device wherein

• a first substrate and a second substrate are provided, facing each other,
• the first substrate includes a substrate body, a first group of interconnects provided on the substrate body and including a gate line and a source lead interconnect that are made of a first metal, and a second group of interconnects provided with an insulating film being interposed between the first and second groups of interconnects and including a source line and an underlying metal that are made of a second metal,
• in a display region, the first group of interconnects extending in parallel to each other and the second group of interconnects extending in parallel to each other in a direction intersecting the first group of interconnects are provided, and pixels are provided, corresponding to switching elements each provided in the vicinity of a corresponding one of intersections of the first and second groups of interconnects as viewed from above, to display an image,
• on the source lead interconnect of the first substrate, the insulating film, the underlying metal, a passivation film, and a planarization film are sequentially provided in this order,
• a groove is provided in a region of the planarization film and the passivation film on a substrate outer perimeter portion including the underlying metal on the source lead interconnect, continuously extending along the substrate outer perimeter portion and across the first group of interconnects,
• a contact hole is provided in the source lead interconnect and the insulating film and the passivation film on the second group of interconnects, and
• a conductive film is provided on the contact hole electrically connecting the source lead interconnect and the second group of interconnects.