Manufacturing methods and the display panel of the display panel

On an underlying substrate, forming a first layer having a first opening, a second layer having a smaller second opening area than the first opening on the first layer forming, inside the first and second openings, and forming a wiring layer in contact with the electrode, the second layer, the portion present on the first layer, the second and a portion present in the first opening, the portion present in the first opening of the second layer covers the inner peripheral surface of the first opening.