Display module and display device

The embodiment of the utility model provides a display module and a display device, relates to the technical field of display, and is used for reducing the problem of'display ghosting 'generated by the display device. The display module comprises a display panel and a cover plate. The display panel is provided with a display area. The cover plate is located on the display side of the display panel and comprises a first sub-part and a second sub-part. The orthographic projection of the first sub-part on the display panel covers the display area of the display panel, and an interval is formed between the orthographic projection boundary and the boundary of the display area. The second sub-part is located on the side, away from the display panel, of the first sub-part, the orthographic projection boundary of the second sub-part on the display panel is located in the orthographic projection boundary of the first sub-part on the display panel, and a gap is formed between the second sub-part and the boundary of the display area. Wherein the side wall of the second sub-part is provided with a concave-convex structure, and the concave-convex structure extends in the circumferential direction of the second sub-part and surrounds at least part of the second sub-part. The display module is used for displaying images.