Frame structure, backlight module and display

A frame structure is defined in a first direction and comprises a first frame (10) internally provided with at least one air exhaust channel (11), an attachment layer (20) provided with at least one through hole (21) and a second frame (30) combined with the first frame (10) through the attachment layer (20), the first frame (10) and the second frame (30) jointly define a containing space (40) extending in the first direction, and the containing space (40) is used for containing the first frame (10) and the second frame (30). The air exhaust channel is communicated with the containing space (40) and the outside, the attaching layer (20) is located in the containing space (40) and divides the containing space (40) into a first air exhaust channel (41) and a second air exhaust channel (42) which are communicated through the through hole (21), and residual air in the containing space (40) can be led out from the air exhaust channel to the outside, so that the attaching area and the attaching integrity of the att