The invention discloses a display panel manufacturing method, a display panel, and a
display device. The method comprises the steps: forming a
thin film transistor pattern, a grid line pattern and a data line pattern on a substrate, wherein the
thin film transistor pattern comprises a connecting block connected with the drain
electrode of a
thin film transistor, and the connecting block is provided with a plurality of hollow-out structures; carrying out the exposing and developing
processing of a negative
photoresist layer at one side, backing on to the thin film
transistor, of the substrate,and removing the non-exposed part of the negative
photoresist layer; removing a pixel
electrode layer which is not covered by the negative
photoresist layer; removing the remaining negative photoresist layer, and forming a pixel
electrode pattern. The thin film
transistor pattern, the grid line pattern and the data line pattern are taken as the
mask templates, and the pixel electrode pattern is formed in an
autocollimation mode, thereby avoiding a collimation problem caused by the application of a
mask, and causing no pattern offset. Meanwhile, the method saves the
mask which is used for manufacturing a pixel electrode, thereby saving the production cost.