In a method of fabricating a flexible display panel, a rigid substrate is provided. A flexible substrate having a first surface and a second surface opposite to the first surface is provided. A plurality of releasing-regions are formed on the first surface, and bonding strength of an area outside the releasing-regions is greater than bonding strength of the releasing-regions. An adhesive layer is formed between the rigid substrate and the first surface of the flexible substrate. A plurality of display units are formed on the second surface, and each of the display units is located over one of the releasing-regions, respectively. The flexible substrate is patterned to obtain a plurality of flexible carriers, and each of the flexible carriers carries one of the display units, respectively. The flexible carriers and the adhesive layer are de-bonded.