According to one embodiment, a display device, including a first insulating, a first common electrode located on a side of the first insulating layer, a second common electrode being adjacent to the first common electrode, and a second insulating, wherein the first insulating layer is in contact with the second insulating layer at a position corresponding to the first boundary portion, the second common electrode is contact with any one of the first and second insulating layers at a position corresponding to the second boundary portion, and being in contact with both the first and second insulating layers at a position corresponding to the third boundary portion.