The etching process for separating the flexible display devices from each other may be performed after, or at the same time with, the process for forming each layer according to the practical need, as long as the portion of the glass support plate 3 at the cutting region 1 is exposed finally. In this regard, it is able to thoroughly separate the adjacent flexible display devices from each other without any laser cutting operation.

In the embodiments of the present disclosure, the etching process may also be performed during the manufacture of the flexible display devices, so as to simplify the manufacture process and reduce the manufacture cost.

As shown in FIGS. 1a-1d, the process of forming the layer of flexible display devices on the support plate may include: forming the flexible substrate 4 on the support plate; and forming the plurality of layers on the flexible substrate 4. The cutting region 1 between two adjacent flexible display devices may be covered by the flexible substrate 4 and the plurality of layers.

Here, the flexible substrate 4 may include a first flexible substrate 41, an isolation layer 42 and a second flexible substrate 43 laminated one on another.