Abstract: A backlight module includes a lamp panel and a light-guide assembly. The lamp panel includes a plurality of light-emitting plates spliced to each other, a seam is generated between two adjacent light-emitting plates of the plurality of light-emitting plates, each of the plurality of light-emitting plates comprises a plurality of light-emitting elements; a light-guide assembly, arranged at the seam, a height of the light-guide assembly in a direction perpendicular to the lamp panel is greater than a height of each of the plurality of light-emitting elements, a surface of a side of the light-guide assembly away from the plurality of light-emitting plates is recessed toward the seam, and a part of light, which is emitted from any light-emitting element of the plurality of light-emitting elements arranged at edges of the two adjacent light-emitting plates and near the seam, is refracted by the light-guide assembly to propagate towards the seam.