1. A display panel, comprising: an array substrate comprising a plurality of gate lines, a plurality of data lines and a plurality of sub-pixel units each defined by adjacent gate lines and adjacent data lines, wherein the sub-pixel units are classified into first type of sub-pixel units for displaying an original image and second type of sub-pixel units for displaying an interference image, and a pixel unit is composed of a plurality of adjacent first type of sub-pixel units and a plurality of adjacent second type of sub-pixel units; and a cell substrate, the outermost side of the cell substrate being provided with a FPR film array, the FPR film array comprising: first FPR films corresponding to the first type of sub-pixel units so as to convert emitting light of the original image of the first type of sub-pixel units into polarized light in a first direction; and a second FPR film corresponding to the second type of sub-pixel units so as to convert emitting light of the interference image of the second type of sub-pixel units into polarized light in a second direction different from the first direction.