Backlight Module and Display Device

A backlight module, comprising:

• a lamp panel comprising a first surface and a second surface opposite to each other, wherein the first surface comprises a light source array;
• a first back plate connected with the lamp panel at a side of the second surface of the lamp panel;
• a second back plate connected with the first back plate at a side of the first back plate away from the lamp panel;
• an optical film layer located on the first surface of the lamp panel;
• and
• at least one light-transmitting support column comprising a base portion and a protrusion portion located on an upper surface of the base portion, the protrusion portion passing through the lamp panel and protruding from a side of the first surface of the lamp panel to support the optical film layer,
• wherein the first back plate further comprises an avoiding opening corresponding to the at least one light-transmitting support column, so that the base portion of the at least one light-transmitting support column is clamped between the lamp panel and the second back plate.