Display device and smart watch

A display device, comprising:

• a display panel;
• a backlight module corresponding to the display panel;
• and
• a center rotating shaft;
• wherein the backlight module comprises a light guide plate, an optical film on a light emitting side of the light guide plate, and a back plate on a side of the light guide plate facing away from the optical film;
• the backlight module is provided with a first channel extending through the back plate, the light guide plate and the optical film sequentially to allow the center rotating shaft to pass through the backlight module;
• the display panel is on a side of the optical film facing away from the light guide plate, and is provided with a second channel extending through the display panel in a thickness direction thereof to allow the center rotating shaft to pass through the display panel;
• wherein the second channel communicates with the first channel;
• and
• the center rotating shaft passes through the first channel and the second channel sequentially, and a portion, between the display panel and the back plate, of the center rotating shaft is a light transmitting portion made of a transparent material.