A display device and a display panel (1) thereof, and a display panel (1) manufacturing method. The display panel (1) comprises: a substrate (10) and a light-emitting structure (20) located on the substrate (10). A pixel driving circuit (30) exists between the substrate (10) and the light-emitting structure (20) and comprises a storage capacitor (Cst); an orthogonal projection of the storage capacitor (Cst) on the substrate (10) at least partially overlaps an orthogonal projection of the light-emitting structure (20) on the substrate (10); the storage capacitor (Cst) comprises a first transparent polar plate (311) proximate to the substrate (10) and a second transparent polar plate (312) distant from the substrate (10); an orthogonal projection of the first transparent polar plate (311) on the substrate (10) is located within an orthogonal projection of the second transparent polar plate (312) on the substrate (10).