Patent ID: 8913221

Claim:
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.