Backlight module

A backlight module comprises a rubber frame and optical films embedded in the rubber frame. Each optical film comprises a body part and at least one film protruding part extending outwards from the side edge of the body part, an included angle smaller than a right angle is formed between connecting positions of each body part and the corresponding protruding part, the rubber frame is provided with a containing groove with an opening facing towards the body parts, the protruding parts are contained inside the containing groove, and the containing groove is matched with the protruding parts in shape. The protruding parts extending outwards from the body parts are arranged on the optical films, the edge, far away from the corresponding body part, of each protruding part is longer than the edge, connected with the corresponding body part, of the protruding part, meanwhile, the containing groove matched with the protruding parts is formed in the rubber frame, the protruding parts are contained inside the containing groove, therefore, it can be guaranteed that the optical films do not easily shift in the rubber frame, the structure stability of the backlight module can be improved, and meanwhile the design needs of a super-narrow frame can be met.