A support film for a flexible display panel is provided. The support film includes a first support portion and a second support portion on a first surface of a substrate of the display panel. The first support portion is located in a bonding area, the second support portion extends from a display area to the bonding area, and a groove is provided between the first support portion and the second support portion to expose the first surface. The first support portion includes a first support base material and a first adhesive material, and the first adhesive material adheres the first support base material on the first surface. The second support portion includes a second support base material and a second adhesive material, the second adhesive material adheres the second support base material on the first surface.