Display panel and display device

A display device, comprising a display panel comprising a substrate and an array layer arranged on a side of the substrate, wherein:

• the array layer includes a first metal layer, an active layer, and a second metal layer, along a first direction, the first metal layer and the second metal layer are on two sides of the active layer, and the first direction is perpendicular to the substrate;
• the array layer includes at least one first transistor including a first sub-transistor and a second sub-transistor connected in series, and the first sub-transistor includes a first active layer in the active layer, the second sub-transistor includes a second active layer in the active layer, the first active layer is connected to the second active layer;
• and
• along the first direction, the first metal layer overlaps both the first active layer and the second active layer, and the second metal layer overlaps the second active layer, and does not overlap the first active layer.