Folding display device

A folding display device, comprising:

• a first support frame;
• a second support frame;
• a flexible display panel;
• a connecting assembly;
• and
• a rotating shaft assembly;
• wherein the rotating shaft assembly is rotatably connected between the first support frame and the second support frame through the connecting assembly, the flexible display panel is fixed on the first support frame and the second support frame and covers the rotating shaft assembly, and the rotating shaft assembly comprises 2N+2 cylindrical rotating shafts;
• wherein 2N+2 cylindrical rotating shafts of the folding display device in a flattened state are arranged side by side and two adjacent cylindrical rotating shafts are in contact with each other;
• wherein when the first support frame and the second support frame are rotated to be in two parallel opposite planes and the folding display device is in an externally bent state, 2N+2 cylindrical rotating shafts are divided into a first layer and a second layer stacked with each other, the second layer has N cylindrical rotating shafts arranged side by side, the first layer has N+2 cylindrical rotating shafts arranged side by side, two adjacent cylindrical rotating shafts of the first layer are in contact with each other, N cylindrical rotating shafts of the second layer are stacked on N+2 cylindrical rotating shafts of the first layer and support the flexible display panel corresponding to the rotating shaft assembly, N is a positive integer greater than or equal to 1;
• wherein the folding display device further comprises a metal sheet fixed to the first support frame and the second support frame and covering the rotating shaft assembly, and the flexible display panel is fixed to a surface of the metal sheet away from the rotating shaft assembly.