A method for manufacturing phase retarder film includes steps of providing a substrate; forming an alignment layer on the substrate, the alignment layer having at least a first phase region, at least a second phase region and at least a third phase region, the third phase region being disposed between the first phase region and the second phase region, and a phase retardation of the third phase region being different from phase retardations of the first phase region and the second phase region. The phase retardation of the first phase region is different from the phase retardation of the second phase region.