This application discloses a method for manufacturing a display panel, a display panel, and a display device. The method includes steps of: forming a first substrate; forming a plurality of data lines in the first substrate; and arranging data drive chips, and connecting data signal paths on the data drive chips to the data lines in a one-to-one correspondence, where in a correspondence connection process, data signal paths matching the data lines are selected, the matching data signal paths are connected to the data lines, and suspension processing is performed on mismatching data signal paths.