Screen printing plate and edge printing system for three-dimensional objects

An edge printing system for three-dimensional objects, comprising:

• a substrate, having a three-dimensional object disposed on a surface thereof;
• a screen printing plate, disposed on the surface of the substrate, the screen printing plate comprising:
• a frame;
• a mesh component, disposed on the frame, the mesh component having a squeegee contact surface and a substrate contact surface opposed to the squeegee contact surface, the substrate contact surface being adjacent to the substrate and the three-dimensional object, and
• a patterned blocking layer, disposed on the substrate contact surface of the mesh component to divide the mesh component into a printing material non-discharge area and a printing material discharge area, the printing material discharge area being corresponding to the three-dimensional object and being divided into a three-dimensional object stacking area and a non-three-dimensional object stacking area;
• wherein, the patterned blocking layer forms a first limiting wall in the non-three-dimensional object stacking area, and the patterned blocking layer forms a second limiting wall in the three-dimensional object stacking area, the thickness of the first limiting wall is larger than the thickness of the second limiting wall;
• and
• a squeegee, configured to apply pressure on a printing material applied on the squeegee contact surface to allow the printing material to be discharged from the printing material discharge area and to form a coverage layer covering a portion of a top surface of the three-dimensional object and a side surface adjacent to the top surface.