A display panel and a manufacturing method thereof are provided. The display panel has a display area, a non-display area, and a bendable connection area being located between the display area and the non-display area and connecting the display area with the non-display area. The display panel includes a substrate; an inorganic insulating layer disposed on the substrate, wherein in the bendable connection area, a plurality of recesses are defined in the inorganic insulating layer; an organic filling layer filled in the plurality of recesses in the inorganic insulating layer and having a concave curved surface; and a wiring layer disposed on the inorganic insulating layer, wherein a concave curved surface formed on the wiring layer corresponds to the concave curved surface of the organic filling layer in each of the recesses.