Display devices and tiled display devices

A display device, comprising:

• a display panel;
• a backlight module located on an incident side of the display panel and comprising a frame and a light guiding structure,
• wherein the frame comprises a first supporting surface and a second supporting surface both facing the display panel,
• wherein the second supporting surface is located on a side of the first supporting surface away from the display panel, the first supporting surface is attached to a backlight surface of the display panel, and the second supporting surface is engaged with the light guiding structure;
• wherein the frame further comprises:
• a back plate;
• and
• a middle frame comprising a fixing portion and a supporting portion, wherein the first supporting surface and the second supporting surface are at one end of the supporting portion;
• wherein the other end of the supporting portion extends away from the display panel and contacts the back plate;
• wherein the fixing portion is located on an outside of the supporting portion, one end of the fixing portion is fixed to the back plate, the other end of the fixing portion is between the one end of the supporting portion and the other end of the supporting portion, and an angle is formed between the fixing portion and the supporting portion.