Manufacturing method of display panel, display panel and display apparatus

A manufacturing method of a display panel, comprising:

• forming a plurality of backlight units on a process substrate;
• filling a partition between adjacent backlight units, wherein a height of the partition relative to the process substrate is greater than a height of the adjacent backlight units relative to the process substrate;
• preparing a filter layer on a surface of each of the plurality of backlight units away from the process substrate to obtain backlight units with the filter layer on surfaces of the backlight units;
• wherein a sum of heights of the filter layer and a corresponding backlight unit relative to the process substrate is less than or equal to the height of the partition relative to the process substrate;
• stripping the backlight units with the filter layer on the surfaces from the process substrate, and transferring to a target substrate;
• and
• packaging the target substrate.