A support structure for a flexible panel. The flexible panel includes a non-bending area, a bending area and a pad area arranged in sequence along a first direction. The pad area is located at a backlight side of the non-bending area. The support structure includes a support plate, and the support plate includes a planar support area attached to the non-bending area and a patterned area at least attached to the bending area. The present disclosure further provides a method for assembling a flexible module, and a display device.