A display module, a display device, and a transparent optical adhesive layer structure are disclosed. The display module comprises a bonding layer for bonding a display panel and a lamellar structure; the display panel comprises a first substrate and a second substrate arranged oppositely; the first substrate comprises a first extending part beyond the edge of the second substrate; the second substrate is provided close to the bonding layer; the lamellar structure comprises a second extending part beyond the edge of the second substrate; projections of the second extending part and the first extending part on a plane where the first substrate is located are at least in part overlapped; the bonding layer comprises a support part extending between the first extending part and the second extending part.