Display module and display device

A display device, comprising:

• a power supply component and a display module, wherein
• the display module comprises:
• a protective cover, a flexible display panel, and a metal heat-dissipation layer;
• wherein
• the protective cover comprises:
• a main body portion in the shape of a circular plate and a bending portion distributed around the main body portion, the bending portion being fixedly connected to an edge of the main body portion;
• a light-exit side of the flexible display panel is attached to the protective cover, and an orthographic projection of an edge portion of the flexible display panel on the protective cover is within the bending portion;
• and
• the metal heat-dissipation layer is attached to a side, going away from the protective cover, of the flexible display panel, an orthographic projection of an edge portion of the metal heat-dissipation layer on the protective cover is within the bending portion, and the edge portion of the metal heat-dissipation layer has a plurality of hollowed-out grooves arranged in arrays;
• and the power supply component is configured to supply power to the display module.