A flexible display panel includes a bending area and a surrounding area adjacent to the bending area. The barrier layer includes first silicon nitride layers and first silicon oxide layers which are overlapped with the bending area. The first silicon nitride layers and the first silicon oxide layers are stacked alternately. Each of the first silicon nitride layers may have a thickness less than or equal to about 400 Å, and each of the first silicon oxide layers may have a thickness less than or equal to about 650 Å.