Support device and foldable display device

A foldable display device, comprising:

• a flexible display module and a support device;
• wherein the support device is disposed on a non-display surface of the flexible display module and connected to the flexible display module to support the flexible display module, the flexible display module comprising a bendable portion and a first unbendable portion and a second unbendable portion disposed on two sides of the bendable portion;
• and
• the support device comprises:
• a first support plate, configured to support the first unbendable portion;
• a second support plate, configured to support the second unbendable portion;
• and
• a hinge, configured to allow the bendable portion to be folded or unfolded;
• wherein the hinge at least comprises a flip assembly, the flip assembly comprising:
• a first flip plate, fixedly connected to the first support plate;
• a fixing member, rotatably connected to the first flip plate;
• a connection wrap member, wrapping the fixing member and fixedly connected to the fixing member;
• a slide member, wrapped by the connection wrap member and slidably connected to the fixing member;
• a first elastic member, disposed between the fixing member and the slide member, wherein one end of the first elastic member is connected to the fixing member and another end of the first elastic member is connected to the slide member;
• and
• a second flip plate, fixedly connected to the second support plate and rotatably connected to the slide member;
• wherein the first elastic member is in a compressed state, and a first compression amount of the first elastic member in a case where the support device is not connected to the flexible display module is less than a second compression amount of the first elastic member in a case where the support device is connected to the flexible display module.