According to the embodiments of the present disclosure, the layer of flexible display devices may be formed on the support plate, and the portions of the layers at the cutting region between two adjacent flexible display devices may be removed through an etching process, so as to separate the display devices from each other. Then, the etch flexible display devices may be removed from the support plate through an LLO process, so as to obtain the flexible display devices separated from each other. During the manufacture of the flexible display devices, the flexible display devices may be separated from each other through an etching process, so it is unnecessary to provide a cutting margin at an external region of each flexible display device, and as compared with a conventional laser cutting process, it is able to provide a smaller cutting width, thereby to facilitate the design of an ultra-narrow bezel. In a word, during the manufacture of the flexible display device in the embodiments of the present disclosure, it is able to provide the product with the ultra-narrow bezel while ensuring the quality of the display device.