<p>According to an embodiment of the present invention, the method for manufacturing a flexible display device comprises: a step of preparing a supporting substrate; a step of forming a first graphene oxide layer having a first electric charge on the supporting substrate; a step of forming a second graphene oxide layer having a second electric charge on the first graphene oxide layer; a step of forming a flexible substrate on the second graphene oxide layer; a step of forming a display part on the flexible substrate; and a step of separating the flexible substrate from the supporting substrate.</p>
