A manufacturing method for a patterned quantum dot film layer, comprising:
- forming a patterned mask layer on one side of a base substrate, wherein the patterned mask layer exposes a target region in which quantum dot bodies are to be formed;
- forming a quantum dot thin film on a side, facing away from the base substrate, of the patterned mask layer, wherein the quantum dot thin film comprises the quantum dot bodies, and native ligands connected to the quantum dot bodies;
- forming a ligand thin film containing replacement ligands on a side, facing away from the patterned mask layer, of the quantum dot thin film, and standing for a first duration, such that the native ligands are replaced by the replacement ligands;
- performing cleaning by a cleaning solvent to remove unreacted replacement ligands and replaced native ligands, wherein the quantum dot bodies connected to the replacement ligands are not removed by the cleaning solvent;
- and
- peeling off the patterned mask layer, and together removing the quantum dot thin film attached to the patterned mask layer, so as to form a pattern part of a quantum dot film layer in the target region;
- wherein the forming the ligand thin film containing the replacement ligands on the side, facing away from the patterned mask layer, of the quantum dot thin film, and standing for the first duration, such that the native ligands are replaced by the replacement ligands, comprises:
- forming the ligand thin film containing replacement ligands comprising a plurality of coordinating terminals on the side, facing away from the patterned mask layer, of the quantum dot thin film, wherein each of the replacement ligands comprising the plurality of coordinating terminals comprises a linking group, and a plurality of terminal coordinating groups connected to the linking group;
- and
- replacing the native ligands by the replacement ligands comprising the plurality of coordinating terminals, and connecting different terminal coordinating groups of the replacement ligand comprising the plurality of coordinating terminals to different quantum dot bodies, so that the different quantum dot bodies are crosslinked with each other through the replacement ligand comprising the plurality of coordinating terminals.