Backlight module and display device

A backlight module, comprising:

• a substrate;
• a first circuit board and a second circuit board provided on the substrate, a gap portion is provided between the first circuit board and the second circuit board;
• a blocking member for blocking the gap portion;
• and
• an optical sheet on a side of the blocking member facing away from the substrate,
• wherein the blocking member comprises a blocking portion, the optical sheet comprises a diffusion plate, a space is provided between the blocking portion and the optical sheet, an orthographic projection of the blocking portion on the substrate covers an orthographic projection of the gap portion on the substrate,
• wherein the blocking portion comprises a first inclined surface inclined with respect to the first circuit board and a second inclined surface inclined with respect to the second circuit board, and the first inclined surface and the second inclined surface converge in a direction toward a light exit side to reflect light incident thereon toward the light exit side, and
• wherein the backlight module further comprises:
• a transparent portion provided on a side of the blocking portion facing away from the substrate, the transparent portion comprises a supporting portion on a side of the transparent portion away from the blocking portion, and the supporting portion contacts the optical sheet.