The invention relates to the technical field of display and discloses a display module, a display device and a transparent optical glue layer structure to improve the product quality and production efficiency of the display device. The display module comprises a display panel, a board layer structure and a bonding layer used for bonding the display panel and the board layer structure, wherein the display panel comprises a first substrate and a second substrate which are arranged oppositely, the first substrate comprises a first extending part exceeding the edge of the second substrate, and the second substrate is arranged close to the bonding layer; the board layer structure comprises a second extending part which exceeds the edge of the second substrate and is opposite to the first extending part in position; the bonding layer comprises a support part extending between the first extending part and the second extending part.