a first protective member including a first surface;

a line portion comprising a flexible insulating base located on the first surface and a wiring layer disposed on the insulating base;

a second protective member covering the line portion; and

an electrical element, wherein

the first protective member includes a valley portion and a peak portion in the first surface,

the line portion is formed in a wavy shape and located on the valley portion and the peak portion,

the line portion includes a plurality of wavy first line portions extending along a first direction and aligned along a second direction intersecting the first direction, a plurality of wavy second line portions extending along the second direction and aligned along the first direction, and island-shaped portions provided at respective intersections of the first line portions and the second line portions, in plan view,

the electrical element is located in each of the island-shaped portions, and

the electrical element is located in the valley portion.